Abstract Introduction: Despite sensory enrichment being critical for ensuring the well-being of captive wild animals, smells are not being included in enrichment protocols for birds. For this group, neophobia can be a problem when it comes to implementing new enrichment devices. Objective: To explore how participation in an olfactory enrichment and latency times varies between bird taxonomic groups (Amazona spp. / Ara spp. / Ramphastos spp.). Methods: We exposed 257 birds to a scent enrichment, and we recorded which individuals engaged with it and the time they took to interact with it. Results: We discovered that participation by toucans in the enrichment was higher compared to amazons and macaws. Furthermore, latency time to interact with the enrichment was higher in amazons that in the other species. Our findings could suggest that toucans are neophilic species which could benefit from higher exploration rates. Amazons on the contrary seem to be particularly neophobic, possibly because of their less opportunistic feeding habits compared to toucans and their higher vulnerability to predation compared to macaws. Conclusion: These results point out that toucans would be more inclined to engage in environmental enrichments, while a more natural design using smells inside familiar objects could be a more successful enrichment for psittacids.

Resumen Introducción: A pesar de que el enriquecimiento sensorial es fundamental para garantizar el bienestar de los animales silvestres en cautiverio, los olores no son incluidos de forma rutinaria en los protocolos de enriquecimiento para aves. Además, en el caso de estos animales, la neofobia puede ser un problema a la hora de implementar nuevos dispositivos de enriquecimiento. Objetivo: Explorar cómo varía la participación y la latencia en la interacción con un enriquecimiento olfativo entre grupos taxonómicos de aves (Amazona spp. / Ara spp. / Ramphastos spp.). Métodos: Expusimos a 257 aves a un enriquecimiento olfativo y registramos qué individuos participaron y el tiempo que tardaron en interactuar con él. Resultados: La participación en el enriquecimiento fue mayor en los tucanes en comparación con las amazonas y los guacamayos. Además, el tiempo de latencia para interactuar con el enriquecimiento fue mayor en las amazonas que en las otras especies. Nuestros hallazgos sugieren que los tucanes son especies neofílicas que podrían beneficiarse de tasas de exploración más altas. Por otro lado, las amazonas parecen ser particularmente neofóbicas, posiblemente debido a sus hábitos alimenticios menos oportunistas en comparación con los tucanes y a su mayor vulnerabilidad a la depredación en comparación con los guacamayos. Conclusión: Estos resultados señalan que los tucanes serían más proclives a participar en enriquecimientos ambientales, mientras que un diseño que utilice olores dentro de objetos más naturales o familiares podría ser más exitoso para las psitácidas.

Abstract The objective of this work was to determine the effect of solar radiation intensity of the grazing system on sheep behavior. Treatment 1, consisted of monoculture of natural grasses (47 ± 5 lux), treatment 2 of natural grasses with Leucaena leucocephala trees (34 ± 3 lux) and treatment 3 of natural grasses with Manguifera indica trees (16 ± 3 lux). The total time of each activity per daily session was determined. A completely randomized design was used with a 3x2 factorial arrangement (three intensities of solar radiation, two sessions per day). Grazing behavior was affected by the interaction between factors. The grazing-walking activity was higher in the pastures with lower levels of solar radiation (Leucaena y Manguifera), with 217.50 y 216.38 min, respectively, in the morning session, while all times were lower in the afternoon session, with the lowest result in grazing in the sun (108.05 minutes). The reduction of solar radiation under the treetops favored the behavior of the sheep, which allowed the animals to perform resting and ruminating activities under the shade of the trees, more preferably in the afternoon session.

Resumen El objetivo fue determinar el efecto de la intensidad de radiación solar del sistema de pastoreo en la conducta de ovinos. El tratamiento 1 consistió en: monocultivo de gramíneas naturales (47 ± 5 lux); el 2: gramíneas naturales con árboles de Leucaena leucocephala (34 ± 3 lux); y el 3: gramíneas naturales con árboles de Manguifera indica (16 ± 3 lux). Se determinó el tiempo total de cada actividad por sesión del día. Se utilizó un diseño completamente aleatorizado, con arreglo factorial 3x2 (tres intensidades de radiación solar por dos sesiones del día). La conducta en pastoreo fue afectada por la interacción entre los factores. La actividad pastar-caminar fue mayor en los pastoreos de menor nivel de radiación solar (Leucaena y Manguifera) con 217.50 y 216.38 min respectivamente, en la sesión de la mañana; mientras que todos los tiempos fueron menores en la sesión tarde, con el menor resultado en el pastoreo al sol (108.05 minutos). La reducción de la radiación solar bajo la copa de los árboles favoreció el comportamiento conductual de las ovejas, esto permitió que los animales realizaran actividades de descanso y rumia bajo la sombra de los árboles, con más preferencia en la sesión tarde.

Resumen Asegurar la calidad e inocuidad de la carne de animales de abasto es tema de preocupación mundial. De los factores que se deben cuidar están las actividades que generan estrés al animal durante el manejo ante-mortem (transporte, descanso y aturdimiento) y el manejo de la canal post-mortem (maduración y almacenamiento), aunado a las prácticas de higiene en instalaciones y personal. El objetivo del trabajo fue caracterizar unidades de matanza ovina con base a la normatividad mexicana vigente dentro del municipio de Capulhuac de Mirafuentes, Estado de México. Para lo cual, se realizó un análisis de componentes principales (CP), destacando que los que representaron mayor variabilidad en los centros de matanza fueron el precio de las canales y sus productos, lugar de comercialización, volumen de matanza, sexo del animal e inocuidad de las canales, los cuales representaron el 50.4 % de la varianza explicada. Así mismo se realizó un análisis de conglomerados el cual representó la integración de cuatro grupos de descriptores de matanza (P<0.05). Como resultados se encontró que 65 % de animales son faenados en locales comerciales y casas habitación, los cuales no cumplen con la tecnificación descrita en la normatividad; además de que presentan manejos deficientes ante-mortem y post-mortem de animales; también se observó que el 98.3 % de los establecimientos utiliza un método de matanza denominado descabellado, no reportado en la NOM-033-SAG/ZOO/ 2014, aunado al desconocimiento del personal en temas de bienestar animal. Afectando la calidad e inocuidad de la carne y poniendo en riesgo la salud de los consumidores.

Abstract Ensuring the quality and safety of meat from slaughter animals is a matter of global concern. Among the factors that must be taken care of are the activities that generate stress to the animal during antemortem handling (transport, rest, and stunning), postmortem carcass handling (aging and storage), and hygiene practices in facilities and staff. This work aimed to characterize sheep slaughter units within the municipality of Capulhuac de Mirafuentes, State of Mexico, based on current Mexican regulations. For this, a principal component (PC) analysis was carried out, highlighting that those that represented the highest variability in the slaughter centers were the price of the carcasses and their products, place of marketing, slaughter volume, sex of the animal, and safety of the carcasses, which represented 50.4 % of the explained variance. A cluster analysis was also carried out, which represented the integration of four groups of slaughter descriptors (P<0.05). As a result, it was found that 65 % of animals are slaughtered in commercial premises and houses that do not comply with the technification described in the regulations; they also present deficient antemortem and postmortem handling of animals; it was also observed that 98.3 % of the establishments use a slaughter method called “descabellado” (pithing), not reported in NOM-033-SAG/ZOO/2014, coupled with the lack of knowledge of the staff on animal welfare issues. This affects the quality and safety of meat and puts consumers’ health at risk.

Abstract Based on a naturalistic philosophical methodology, this article proposes two features of episodic memory that are relevant for thinking about some issues in animal ethics: (1) the reconstructive character of affectively charged past events, and (2) the narrative character and autonoethical awareness of episodic memory. Regarding the first issue, we briefly review the current debate over evidence that some animals have internally triggered experiences of hedonic valence and suffer from post-traumatic stress disorder. We then explore some of the implications of this trait for animal welfare in intensive production systems. Next, we review the debate on the second issue and demonstrate the role that the properties of episodic memory have played in the attribution of personhood in the philosophical tradition, along with more deflated conceptions of these capacities, understood as a psychological unity or continuity. The final section argues that these contemporary conceptions, which link certain features of memory to psychological unity, allow for the attribution of personhood to nonhuman animals.

Resumen A partir de una metodología filosófica naturalista, el presente artículo propone dos rasgos de la memoria episódica que resultan relevantes para pensar algunos tópicos de la ética animal: (1) el carácter reconstructivo de eventos pasados cargados afectivamente y (2) el carácter narrativo y la conciencia autonoética de la memoria episódica. Respecto del primero, se reseña brevemente el debate actual en torno a la evidencia de que algunos animales presentan experiencias impulsadas internamente con valencia hedónica y padecen trastorno de estrés postraumático. Luego, se exploran algunas consecuencias que tendría esta propiedad a la hora de considerar el bienestar de los animales en sistemas de producción intensivos. A continuación, se reseña el debate vinculado con el segundo rasgo y se evidencia el rol que estas propiedades de la memoria episódica han cumplido en la atribución del carácter de persona en la tradición filosófica, junto a las concepciones más deflacionadas de estas capacidades, entendida como unidad o continuidad psicológica. En la última sección se argumenta que estas concepciones contemporáneas, que vinculan ciertas notas de la memoria con la unidad psicológica, permiten atribuir el carácter personal a animales no humanos.

Abstract Demonstrative and experimental studies with animals over time have been part of the practical teaching of different contents that have contributed to the biological, medical and pharmacological sciences. However, progress in scientific and educational activity has brought with it bioethical difficulties from the academic perspective in the importance of using animals to consolidate theoretical knowledge and from the bioethical-legal perspective in the requirement of good animal management. The objective of the research was to analyze the application of bioethical criteria in demonstrative and experimental practices that use animals in the Pedagogy of Experimental Sciences in Chemistry and Biology. The study had a qualitative-descriptive approach. The interview technique was applied to three laboratory professionals and to an external teacher expert in animal practices. In addition, laboratory observation was carried out using an observation card with nine indicators and four dimensions in 32 practices with animals. A structured survey of 11 questions was also applied. These instruments were applied to a population of 155 students in their third, fourth and eighth semesters. The survey, interview and observation form were validated by three expert teachers. The results indicated that 68.75% of the practices work with dead individuals, 21.87% with insect vivisection and 9.38% with preserved exotic animals. In conclusion, most of the practices (78.13%) are in accordance with the framework of the Bioethical Regulations set forth at national and international level and have taken care of animal welfare, avoiding unnecessary sacrifice of animals.

Resumen Los estudios demostrativos y experimentales con animales a lo largo del tiempo han formado parte de la enseñanza práctica en diferentes contenidos que han aportado a las ciencias biológicas, médicas y farmacológicas. Sin embargo, el avance en la actividad científica y educativa ha traído consigo dificultades bioéticas desde la perspectiva académica en la importancia de utilizar animales para consolidar conocimientos teóricos y desde la perspectiva bioética-legal en la exigencia del buen manejo animal. El objetivo de la investigación fue analizar la aplicación de criterios bioéticos en prácticas demostrativas y experimentales que emplean animales en la Carrera de Pedagogía de las Ciencias Experimentales Química y Biología. El estudio tuvo un enfoque cualitativo-descriptivo. Se aplicó la técnica de la entrevista a tres profesionales de laboratorio, y a un docente externo experto en prácticas con animales. Además, se realizó observación en laboratorio empleando una ficha de observación de nueve indicadores y cuatro dimensiones en 32 prácticas con animales. Así también se aplicó una encuesta estructurada de 11 preguntas. Instrumentos que se ejecutaron en una población de 155 estudiantes de tercero, cuarto y octavo semestres. Encuesta, entrevista y ficha de observación, fueron validados por tres docentes expertos. Los resultados indicaron que en 68.75% de las prácticas se trabaja con individuos muertos, 21.87% con vivisección en insectos y 9.38% con animales exóticos preservados. En conclusión, la mayoría de prácticas (78.13%) se ajustan al marco de las Normativas Bioéticas expuestas a nivel nacional e internacional y han cuidado el bienestar animal, evitando sacrificio innecesario de los mismos.

RESUMEN El objetivo del estudio fue evaluar el efecto de la estimulación táctil sobre el comportamiento, indicadores fisiológicos y desempeño en potrillos Pura Sangre Inglés. El experimento se desarrolló en el Haras Cerro Punta, Chiriquí, Panamá, con 33 animales con peso similar y distribuidos aleatoriamente en tres tratamientos. Control (CON; n=13); estimulación táctil (TS; n=10); estimulación táctil y habituación al manejo durante 8 días consecutivos (TS+HAB; n=10). La TS se realizó a las 12 h del nacimiento, masajeando el cuerpo del animal durante 45 min. La habituación al manejo comenzó al día siguiente de la TS, por 15 min. El comportamiento se evaluó mediante la distancia de fuga y la reactividad al contener a los potros para el manejo durante intervenciones veterinarias, utilizando una escala de 5 puntos (1-5). Además, se determinó la frecuencia cardíaca y respiratoria y la ganancia diaria de peso al primer y quinto mes de vida. El análisis se realizó utilizando modelos lineales mixtos o pruebas no paramétricas. La distancia de fuga no difirió entre tratamientos (p>0.05). Los animales TS+HAB mostraron una menor reactividad durante la contención en los dos momentos en comparación a CON (p<0.05). La frecuencia respiratoria solamente difirió entre TS+HAB y CON al primer momento (p<0.05). Sin embargo, no hubo diferencias significativas en la ganancia diaria de peso entre tratamientos (p>0.05). Se concluye que los potrillos que recibieron estimulación táctil y habituación al manejo durante 8 días consecutivos (TS+HAB) tuvieron menor reactividad de forma consistente a lo largo de los momentos evaluados y una frecuencia respiratoria más baja al mes de vida.

ABSTRACT The aim of this study was to evaluate the effect of tactile stimulation on the behaviour, physiological indicators, and performance of Thoroughbred foals. The experiment was conducted at Haras Cerro Punta, Chiriqui, Panama. Thirty-three foals with homogeneous weights were randomly assigned to three treatments: control (CON; n = 13), tactile stimulation (TS; n = 10), and tactile stimulation plus habituation to handling for 8 consecutive days (TS + HAB; n = 10). Tactile stimulation was performed 12 h after birth by massaging the entire body of the newborn for 45 min. Habituation to handling started the day after touch stimulation, 15 min per day for 8 consecutive days. Behaviour was assessed using escape distance and reactivity to containment during veterinary interventions on a 5-point scale (1-5). In addition, heart and respiratory rates and daily weight gain were determined in the first and fifth months of age. Analysis was performed using linear mixed or nonparametric tests. The escape distance did not differ between treatments (p>0.05). TS+HAB animals showed lower reactivity during restraint at both times compared to CON (p<0.05). The respiratory rate only differed between TS+HAB and CON at the first moment (p<0.05). However, there were no significant differences in daily weight gain between the treatments (p>0.05). It was concluded that the foals that received tactile stimulation and habituation to handling for eight consecutive days (TS + HAB) had consistently lower reactivity throughout the evaluated moments and a lower respiratory rate at one month of age.

Abstract Introduction: Even though only a few species are considered to be dangerous, pests or vectors, the majority of invertebrates produce a feeling of aversion in humans. This has contributed to the delay in the development of ethical considerations as regards this group in contrast with vertebrates, with the exception of cephalopods. Objective: In the present study, we provide an overview of the current situation on animal ethics and welfare in order to contribute to the development of a framework for ensuring invertebrate welfare. Methods: Today, animal welfare is multidisciplinary in nature to a very high degree as it includes ethology, physiology, pathology, biochemistry, genetics, immunology, nutrition, cognitive-neural, veterinary medicine, and ethics. Animal welfare is a complex concept, difficult to achieve successfully from one perspective. Results: As a consequence, we propose to include the five domains (nutrition, environment, health, behaviour and mental state) along with the three conceptions (basic health and functioning, affective state and natural living), as well as the 5R Principle (Replace, Reduction, Refinement, Respect and Responsibility) in seeking to achieve a comprehensive welfare state. Conclusions: We consider that in both research and animal production, the individual and collective ethical concerns coexist and, in fact, the main moral concern to account for is the collective one and that, within that collective view, the individual moral concern should be applied with responsibility and respect for the individual. Finally, we propose a practical example of invertebrate welfare production in sea urchin aquaculture with the aim of including animal production of invertebrates in this important discussion.

Resumen Introducción: Aunque sólo unas pocas especies son consideradas peligrosas, plagas o vectores, la mayoría de los invertebrados producen un sentimiento de aversión en el ser humano. Esto ha contribuido al retraso en el desarrollo de consideraciones éticas respecto a este grupo en comparación con los vertebrados, a excepción de los cefalópodos. Objetivo: En el presente trabajo, proporcionamos una visión general de la situación actual en materia de ética y bienestar animal con el fin de contribuir al desarrollo de un marco para garantizar el bienestar de los invertebrados. Métodos: Hoy en día, el bienestar animal es de naturaleza multidisciplinaria en un grado muy alto, ya que incluye etología, fisiología, patología, bioquímica, genética, inmunología, nutrición, cognitivo-neural, medicina veterinaria y ética. El bienestar animal es un concepto complejo, difícil de lograr con éxito desde una sola perspectiva. Resultados: Como consecuencia, proponemos incluir los cinco dominios (nutrición, ambiente, salud, comportamiento y estado mental) junto con las tres concepciones (Salud básica y funcionamiento, estado afectivo y vida natural), así como el Principio 5R (Reemplazar, Reducir, Refinar, Respetar y Responsabilidad) en la búsqueda de alcanzar un estado de bienestar integral. Conclusiones: Consideramos que tanto en la investigación como en la producción animal coexisten las preocupaciones éticas individuales y colectivas y, de hecho, la principal preocupación moral a dar cuenta es la colectiva y que, dentro de esa visión colectiva, se debe aplicar la preocupación moral individual. con responsabilidad y respeto por la persona. Finalmente, proponemos un ejemplo práctico de producción de bienestar de invertebrados en la acuicultura de erizos de mar con el objetivo de incluir la producción animal de invertebrados en esta importante discusión.

ABSTRACT The aim of this work was to evaluate the hydric status and serum cortisol concentration in horses during two cultural horseback rides in the municipalities of Granada and Acacías in the department of Meta (Colombia). For this, 88 animals were selected at convenience (44 per ride), taking blood samples 1 h before starting the ride (T0) and 15 min after finishing the ride (T1). In addition, a clinical examination was conducted to determine their hydric status (humidity of the mucous membranes, capillary refill time, skin turgor and eyeball retraction). In the blood test, micro haematocrit, total serum proteins and cortisol concentration were determined. The results of the variables between the two times were compared with the Shapiro Wilks and Wilcoxon tests. The Spearman test determined the correlations between age and sex with serum cortisol. There were no significant differences between the hydric status and the times evaluated; however, micro haematocrit, total serum proteins and cortisol presented lower values at T0 (p<0.001). On the other hand, no significant correlations were found between serum cortisol concentration with age and sex. The results suggest that cultural horseback riding is a stressful activity for the animal, determined by the significant increase in serum cortisol, with a tendency toward haemoconcentration that emphasizes the importance of correct hydration of horses before, during and after these events.

RESUMEN El propósito de este trabajo fue evaluar el estatus hídrico y la concentración de cortisol sérico en equinos durante dos cabalgatas culturales en los municipios de Granada y Acacías del departamento del Meta (Colombia). Se seleccionaron 88 animales a conveniencia (44 por cabalgata), tomando muestras de sangre 1 h antes de iniciar la cabalgata (T0) y 15 min después de terminar la cabalgata (T1), además de un examen clínico para determinar su estatus hídrico (humedad de las mucosas, tiempo de llenado capilar, turgencia de la piel y la retracción del globo ocular). En el análisis de sangre se determinó el micro hematocrito, proteínas séricas totales y concentración de cortisol. Los resultados de las variables entre los dos tiempos se compararon con las pruebas de Shapiro Wilks y de Wilcoxon. La prueba de Spearman determinó las correlaciones entre edad y sexo con el cortisol sérico. No hubo diferencias significativas entre el estatus hídrico con los tiempos evaluados; sin embargo, el micro hematocrito, proteínas séricas totales y cortisol presentaron valores menores en T0 (p<0.001). Por otro lado, no se encontraron correlaciones significativas entre la concentración sérica de cortisol con la edad y el sexo. Los resultados sugieren que las cabalgatas culturales son una actividad estresante para el animal, determinada por el incremento significativo de cortisol sérico, habiendo una tendencia a la hemoconcentración que recalca la importancia de la correcta hidratación de los equinos antes, durante y después de estos eventos de exigencia física.

ABSTRACT The aim of this study was to describe the ownership of pets and knowledge of zoonoses among residents in the district of Bambamarca - Cajamarca, Peru, in 2022. In total, 394 surveys were carried out, 30.5% in the urban area (Bambamarca city) and 69.5% in the rural area (Llaucán, San Juan de Lacamaca, Chala and El Tuco). Of those surveyed, 54.8% were female, 20.8% had completed secondary school and the average age was 39.9 years. Besides, 58.4 and 35.5% of interviewees claimed to own dogs and cats, respectively. The person: dog ratio was 4:1 and person: cat was 6.7: 1; 45.2% of dog owners raised them as pets and 45% of cat owners raised them as rodent pest controllers; 67.9% of the dogs were males and 50.5% of the cats were females. The rate of sterilized animals was less than 4% in both species. In the case of dogs, 54.1% walked without restriction and 31.7% of cats were classified as «outdoor»; 50.3% of dog owners and 69.5% of cat owners mentioned performing internal deworming, and 45 and 61.5%, respectively, performed external deworming on a regular basis (at least every 3 months). Moreover, 58% of dogs and 12.8% of cats were reported to have been vaccinated against rabies in the last year. Ignorance of the meaning of the term zoonosis reached 95.4% of those surveyed; however, 90.4% said they knew that animals could transmit diseases to people, the most recognized being rabies (69.8%). It is concluded that it is necessary to develop health education campaigns so that pet owners develop responsible ownership and thus avoid negative impacts on public health and animal welfare.

RESUMEN El estudio tuvo como objetivo describir la tenencia de animales de compañía y los conocimientos de zoonosis entre pobladores en el distrito de Bambamarca - Cajamarca, Perú, en 2022. Se realizaron 394 encuestas, siendo 30.5% en la zona urbana (Bambamarca ciudad) y 69.5% en la zona rural (Llaucán, San Juan de Lacamaca, Chala y El Tuco). De los encuestados, 54.8% fueron mujeres, 20.8% contaban con secundaria completa y la edad promedio fue de 39.9 años. El 58.4 y 35.5% de entrevistados aseguraron poseer perros y gatos, respectivamente. La relación persona: perro fue 4:1 y persona: gato de 6.7: 1. El 45.2% de poseedores de canes lo criaban como mascota y el 45% de poseedores de gatos los criaban como controladores de plaga de roedores. El 67.9% de los perros fueron machos y 50.5% de los gatos fueron hembras. La tasa de animales esterilizados fue menor al 4% en ambas especies. En caso de los perros, 54.1% paseaban sin restricción y 31.7% de los gatos se clasificaron como «outdoor». El 50.3% de tenedores de perros y 69.5% de tenedores de gatos mencionaron realizar desparasitaciones internas, y 45 y 61.5%, respectivamente, desparasitaban externamente de manera regular (al menos cada 3 meses). El 58% de perros y el 12.8% de gatos fueron reportados como vacunados contra la rabia el último año. El desconocimiento del significado del término zoonosis alcanzó al 95.4% de los encuestados; sin embargo, el 90.4% afirmó conocer que los animales podrían transmitir enfermedades a las personas, siendo la más reconocida la rabia (69.8%). Se concluye que es necesario desarrollar campañas de educación sanitaria a fin de que los propietarios de animales de compañía desarrollen una tenencia responsable y evitar de esta forma impactos negativos sobre la salud pública y el bienestar animal.

Abstract Guinea pigs in intensive production generates an imperative necessity of physio-pathological bases for diagnosing their state of welfare, health, and production; those which are available for this species are referred to as laboratory or companion animal. The aim of this research is to determine changes in hematological and blood metabolites profiles in relation to age of Cavia porcellus reared in intensive system at 660 masl in humid tropic. For this purpose, forty 15-120 days old guinea pig in healthy conditions from the inti x Peru lines born in the humid tropic were used and the evaluation ages were 15-21, 22-35, 36-60 and 61-120 days. Blood samples were obtained by puncture of the cephalic vein; profiles of erythrocytes (RBC), total leucocytes (WBC), lymphocytes, granulocytes, hematocrit, hemoglobin, MCV, MCH and MCHC indices were determined. In serum, profiles of glucose, total protein (TP), albumin, total cholesterol (TC), triglycerides, total bilirubin (TB), and direct bilirubin (DB), alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were determined. Hemoglobin profile, MCH and MCHC indices increased as age increased (p < 0,05) and the erythrocytes, leucocytes, hematocrit, hemoglobin profiles and MCV, MCH, MCHC indices showed the narrower interval ranges in the 15-35and 61-120-days old guinea pigs. Profiles of TP, DB and AST showed increase with age (p < 0,05) and the DB, AST, ALT, and TC profiles showed the narrower interval range at 36-120 days old. The hematological and blood metabolites profiles of guinea pigs raised in intensive system in humid tropical conditions show significant changes with production age.

Resumen Los cuyes en producción intensiva generan la necesidad de bases fisiopatológicas para diagnosticar su estado de bienestar, salud y producción; las disponibles están referidas a esta especie como animal de laboratorio o de compañía. El objetivo de esta investigación es determinar los perfiles hematológicos y metabolitos sanguíneos en relación con la etapa de producción de cuyes en sistema de crianza intensivo a 660 msnm en trópico húmedo. Cuarenta cuyes clínicamente sanos de las líneas inti x Perú nacidos en trópico de 15-120 días de edad se distribuyeron en cuatro grupos etarios: 15-21, 22-35, 36-60 y 60-120 días. En sangre se determinó los perfiles de eritrocitos, leucocitos, linfocitos, granulocitos, hematocrito y hemoglobina e índices de MCV, MCH y MCHC y en suero sanguíneo los perfiles de glucosa, proteína total (PT), albumina, colesterol total (CT), triglicéridos, ALT, AST y bilirrubina directa (BD). El perfil de hemoglobina y los índices de MCH y MCHC incrementaron con la edad (p < 0, 05) y los perfiles de eritrocitos, leucocitos, hemoglobina y hematocrito y los índices de MCV, MCH, MCHC mostraron una menor amplitud de intervalos en los cuyes de 15-35 y 61-120 días de edad. Los perfiles de PT, BD y AST incrementaron con la edad (p < 0, 05) y los perfiles de BD, AST, ALT y CT mostraron la menor amplitud de intervalo entre los 36-120 días de edad. Los perfiles hematológicos y de metabolitos sanguíneos en los cuyes criados en sistema de crianza intensivo en condiciones de trópico húmedos muestran cambios significativos con la edad de producción.

RESUMO A entalpia tem sido proposta atualmente como um índice adequado para a avaliação do ambiente interno de galpões de frangos de corte, pois depende basicamente da temperatura e da umidade relativa do ar. Dessa forma, objetivou-se analisar a entalpia como índice de conforto térmico na produção de aves para o município de Londrina, Paraná, e modelar a entalpia aos índices de conforto térmico que proporcionam eficiência na produção. Para o estudo, utilizaram-se dados de 1961 a 2021 do Instituto Nacional de Meteorologia (INMET), de Brasília, Distrito Federal. Os dados meteorológicos desse período foram analisados para conhecer suas variações e as relações entre eles, através de um estudo descritivo e de correlação entre diferentes parâmetros, para comparar as condições de conforto térmico e os limites críticos estabelecidos para as aves. Com base nos resultados desta pesquisa, considerando os índices de entalpia obtidos através de médias históricas, pode-se concluir que a utilização de aquecimento para as aves na primeira e segunda semanas de alojamento, no período de inverno, considerando o local estudado, é imprescindível, devido às baixas temperaturas registadas. Para aves alojadas na terceira, quarta, quinta e sexta semana de idade, considerando os índices de entalpia, pode-se concluir que é necessária a utilização de sistemas de resfriamento para as aves. corte ar forma objetivouse objetivou se Londrina Paraná utilizaramse utilizaram 196 202 INMET, INMET , (INMET) Brasília Federal eles parâmetros pesquisa históricas podese pode alojamento inverno estudado imprescindível registadas terceira quarta idade 19 20 (INMET 1 2

ABSTRACT Enthalpy is currently suggested as a suitable index for assessing the internal environment of poultry production, primarily dependents on air temperature and relative air humidity. This study aimed to analyze enthalpy in bird production in Londrina, located in the northern region of Paraná, Brazil, and to model the comfort enthalpy required for enhanced production efficiency. Data from 1961 to 2021 from the Instituto Nacional de Meteorologia (INMET), Brasília, Federal District, Brazil, were utilized to compare the thermal comfort conditions and critical limits set for the birds. The meteorological data from this period were scrutinized to understand their variations and interrelationship through a descriptive study and correlation analysis of different parameters. The research findings, based on the enthalpy indices derive historical averages, suggest that heating is crucial for birds during the first and second weeks of housing, during the winter, given the location’s low temperatures. For birds housed during the third to sixth weeks of age, the enthalpy indices indicated the necessity of cooling systems. humidity Londrina Paraná Brazil efficiency 196 202 INMET, INMET , (INMET) Brasília District parameters findings averages housing winter locations location s temperatures age systems 19 20 (INMET 1 2

RESUMO: O mercado europeu regulamenta que a insensibilização de aves por eletronarcose nos abatedouros deva acontecer com uma corrente mínima necessária (mA por animal) e frequência correlata (Hz), com corrente e frequência alta. O intuito é promover o bem estar animal e qualidade de carne. Desta forma, os abatedouros brasileiros devem ajustar os parâmetros de insensibilização para que possam atender este mercado. O objetivo do trabalho foi avaliar o efeito dos parâmetros de insensibilização usando as variáveis frequência e duty cycle. Foram realizados nove ensaios. Os resultados demostraram que as frequências avaliadas (700 Hz, 1100 Hz e 1500 Hz) apresentaram maior incidência nos indicadores de Bem Estar Animal (BEA). Assim, houve baixa eficiência na insensibilização das aves para este fator. Entretanto, o duty cycle 25% e 40% promoveu a melhor eficiência na insensibilização das aves. Não foi observada diferença significativa (P > 0,05) para pH 24h, hematomas e a perda por gotejamento. A cor e o pH 2h foram afetados significativamente (P < 0,05) nos ensaios avaliados. A força de cisalhamento foi maior nas frequências mais altas e na interação da frequência de 1500 Hz com o duty cycle de 15% e 25% A capacidade de retenção de água foi menor na frequência de 1100 Hz, e na interação duty cycle 25%. Os ensaios estudados apresentaram comprometimento dos indicadores avaliados, exceto a variável duty cycle a 40%, que demonstrou influência positiva nos indicadores avaliados. Portanto, a aplicabilidade do duty cycle deve ser elucidada devido a sua influência direta na eficiência da insensibilização. RESUMO mA , (Hz) alta carne forma 700 (70 110 150 BEA. BEA . (BEA) Assim fator Entretanto 25 40 P 0,05 005 0 05 24h h gotejamento avaliados 15 Portanto (Hz 70 (7 11 (BEA 2 4 0,0 00 1 7 ( 0,

ABSTRACT: European market regulates that poultry electronarcosis stunning in abattoirs must be performed with a minimal required current (mA per animal) and correlative frequency (Hz), to promote animal welfare and meat quality. In this way, Brazilian abattoirs must adjust the stunning parameters so that they can meet the requirements of that market. This study evaluated the effect of stunning parameters using frequency and duty cycle variables. For this, nine treatments were performed, whose results showed that the analyzed frequencies (700, 1100, and 1500 Hz) had a higher incidence of indicators of animal welfare (AW). Thus, stunning had low efficiency in AW terms. However, the 25% and 40% duty cycles had the best stunning efficiency. There was no significant difference (P > 0.05) for pH 24 h, bruises, and drip loss. Color and pH 2 h were significantly affected (P < 0.05). The shear force was higher in birds subjected to higher frequencies and interaction between 1500 Hz and 15% and 25% duty cycles. Water-holding capacity was lower at 1100 Hz and in the 25% duty cycle interactions. The treatments affected the evaluated indicators, except for the 40% duty cycle, which had a positive influence. Therefore, the duty cycle applicability must be elucidated due to its direct influence on stunning efficiency. ABSTRACT mA Hz, , (Hz) quality way variables 700, 700 (700 150 AW. . (AW) Thus terms However 25 40 P 0.05 005 0 05 bruises loss 0.05. 15 Waterholding Water holding 110 interactions Therefore (Hz 70 (70 (AW 4 0.0 00 1 11 7 (7 0. (

RESUMO: Ratos e camundongos são os modelos experimentais mais utilizados em pesquisa. Globalmente, as instalações de animais estão sujeitas a surtos de parasitas. No Brasil, o perfil parasitológico é utilizado para refletir a condição sanitária dos animais de laboratório e deve ser monitorado frequentemente. O presente estudo teve como objetivo desenvolver uma revisão integrativa de estudos científicos sobre o perfil parasitológico de ratos e camundongos em biotérios no Brasil. A revisão identifica as espécies parasitárias mais prevalentes relatadas em biotérios de diferentes regiões geográficas do país, bem como os fatores que contribuem para a perpetuação desses parasitas, e propõe medidas para ajudar a prevenir tais infecções. Com base na questão norteadora “quais endoparasitas e ectoparasitas já foram identificados em colônias de ratos e camundongos em biotérios no Brasil?” e considerando os critérios de inclusão e exclusão, foram selecionados 28 estudos publicados entre 1974 e 2021 em quatro bases científicas. Esses estudos abrangeram instalações em 12 estados brasileiros, descrevendo 16 gêneros de parasitas em camundongos e 18 em ratos. A maioria das instalações dos estudos selecionados era do tipo convencional e com poucas barreiras sanitárias, e essas condições podem favorecer a recorrência de parasitas. Portanto, esforços são necessários para que as instituições tenham biotérios de acordo com a legislação e pratiquem metodologias otimizadas. As medidas propostas neste artigo podem contribuir para mudar o panorama das parasitoses nos biotérios nacionais, visando salvaguardar a qualidade dos dados científicos e o bem-estar animal. RESUMO pesquisa Globalmente Brasil frequentemente país infecções quais Brasil? exclusão 2 197 202 científicas 1 brasileiros sanitárias Portanto otimizadas nacionais bemestar estar animal 19 20

ABSTRACT: Rats and mice are the most used experimental models in research. Globally, animal houses are subjected to parasite outbreaks. In Brazil, the parasitological profile is used to reflect the sanitary condition of laboratory animals and must be monitored frequently. The present study developed an integrative review of scientific studies on the parasitological profile of rats and mice in animal facilities in Brazil. It identified the most prevalent parasite species reported in animal facilities from different geographic regions of the country, as well as factors contributing to the perpetuation of these parasites, and proposed measures to help prevent such infections. Based on the guiding question “which endoparasites and ectoparasites have already been identified in rat and mouse colonies in animal facilities in Brazil?” and considering inclusion and exclusion criteria, 28 studies published between 1974 and 2021 were selected in four scientific bases. These studies covered facilities in 12 Brazilian States, describing 16 genera of parasites in mice and 18 in rats. Most of the facilities in the selected studies were of the conventional type and with few sanitary barriers, and these conditions may favor the recurrence of parasites. Efforts are, therefore, necessary for institutions to have animal facilities in accordance with the legislation and practice optimal methodologies. The measures proposed in this article can contribute to change the panorama of parasites in the national animal facilities, aiming to safeguard the quality of scientific data and animal welfare. ABSTRACT research Globally outbreaks Brazil frequently country infections which Brazil? criteria 2 197 202 bases 1 States barriers therefore methodologies welfare 19 20

In recent years, there has been a dramatic spike in meat prices in Algeria and globally and this has substantially influenced meat consumption trends. The study aims to understand the factors that influence consumer perceptions and goat meat consumption behaviour in Algeria. This study included 240 participants using random selection who were surveyed using a self-administered questionnaire through face-to-face interviews. At least 83% of the participants preferred the animals to be less than a year old, whereas only 2.9% opted for animals above two years of age. The male participants preferred male animals over female animals (81.3% vs 50.9%). Female participants preferred female animals (49.1% vs 18.7%). Among the breeds, Arbia was preferred over Makatia by 91.2% of participants in terms of sex and age. In terms of meat choice, the thigh muscle was the predominant choice among the female respondents (55.7%), whereas the shoulder cut was preferred by male respondents (49.3%). Nutritional features, health features, preparation time, conservation, information from previous consumers, and animal welfare concerns were found to primarily influence goat meat consumption among the participants. The study findings strongly reflect the trends and the strategies to be implemented in understanding consumer requirements to boost the consumption of goat meat, thereby transforming this into a stable income source in the meat product market.

Abstract Objective: To evaluate the importance of sulfur as an essential mineral in the agroecological management of agricultural systems. Materials and Methods: To develop this research, more than 80 scientific publications dealing with sulfur and sulfocalcic broth in agricultural systems were consulted. The fundamental role of these elements in the soil, their use by plants for pest prevention, as well as their effect on mites and ticks hosted by animals, and their value in ruminant nutrition were documented. Papers were also studied that address in the current context, the effects of climate change, the condition of the soil as the basis of all systems and the importance of agroecological management in agriculture and animal husbandry. Results: Sulfur can be used in a variety of ways, as a soil pH reducer, fertilizer, pesticide and medicine for plants and animals. Its use in the manufacture of sulfuric acid and in ruminant nutrition is also contemplated. In addition, when combined with calcium as a sulfocalcic broth, sulfur is effective as an insecticide, fungicide, and medicine against mites and ticks. Its use is also necessary because 33 % of the soils in Cuba show a state of degradation ranging from moderate to high. This is due to various factors such as erosion, salinization, compaction, acidification and chemical contamination, which also causes the loss of biodiversity. Conclusions: The use of sulfur or sulfocalcic broth is essential in agroecological soil management, due to the high percentage of areas with diverse affectations, to which its multiple applications in plants and animals are added. In Cuba, the use of this substance is a challenge due to the available quantities and the small doses that are used. However, their application facilitates the production of healthy and abundant food at low cost, without causing damage to the environment, and contributes significantly to human welfare.

Resumen Objetivo: Evaluar la importancia del azufre como un mineral esencial en la gestión agroecológica de los sistemas agropecuarios. Materiales y Métodos: Para desarrollar esta investigación se consultaron más de 80 publicaciones científicas que tratan sobre el azufre y el caldo sulfocálcico en los sistemas agropecuarios. Se documentó la función fundamental que desempeñan estos elementos en el suelo, su uso por las plantas para la prevención de las plagas, así como su efecto en ácaros y garrapatas que se hospedan en animales; además de su valor en la nutrición de rumiantes. También se estudiaron artículos que abordan en el contexto actual, los efectos del cambio climático, la condición del suelo como base de todos los sistemas y la importancia de la gestión agroecológica en la agricultura y la ganadería. Resultados: El azufre se puede utilizar de diversas maneras, como reductor del pH del suelo, fertilizante, pesticida y medicamento para plantas y animales. También se contempla su uso en la fabricación del ácido sulfúrico y en la nutrición de rumiantes. Además, cuando se combina con calcio como caldo sulfocálcico, el azufre es efectivo como insecticida, fungicida, y medicamento contra ácaros y garrapatas. También es necesario su uso debido a que el 33 % de los suelos en Cuba presentan un estado de degradación que va desde moderada hasta alta. Esto se debe a diversos factores como la erosión, la salinización, la compactación, la acidificación y la contaminación química, lo cual también provoca la pérdida de biodiversidad. Conclusiones: La utilización de azufre o caldo sulfocálcico es esencial en el manejo agroecológico del suelo, debido al elevado porcentaje de áreas con diversas afectaciones, a lo que se adicionan sus múltiples aplicaciones en plantas y animales. En Cuba la utilización de esta sustancia es un desafío por las cantidades disponibles y las pequeñas dosis que se utilizan. No obstante, con su aplicación se facilita la producción de alimentos sanos y abundantes a costo bajo, sin causar daños al medioambiente, y contribuir significativamente al bienestar humano.