ABSTRACT The biomass sorghum [Sorghum bicolor (L.) Moench] was developed for energy production, but its agronomic characteristics make it an alternative plant for silage production. This study aimed to evaluate the chemical-bromatological composition of silages from biomass sorghum genotypes. The experimental genotypes B004, B005, B009, B010, B011, B013, B015 and B020, as well as three commercially available genotypes (BRS655, Volumax and K1009), were evaluated. The pH, dry matter, ash, organic matter, crude protein, neutral detergent fiber, acid detergent fiber, hemicellulose and lignin were analyzed. A completely randomized design, with four replications, was used, having the genotypes as treatments. Although significant differences were observed among the 11 genotypes, the chemical-bromatological composition of all them showed their potential to be used for silage production.

RESUMO O sorgo biomassa [Sorghum bicolor (L.) Moench] foi desenvolvido para a produção de energia, mas suas características agronômicas o tornam uma planta alternativa para a produção de silagem. Objetivou-se avaliar a composição químico-bromatológica de silagens provenientes de genótipos de sorgo biomassa. Os genótipos experimentais avaliados foram B004, B005, B009, B010, B011, B013, B015 e B020, além de três genótipos disponíveis comercialmente (BRS655, Volumax e K1009). Foram determinados o pH, matéria seca, cinzas, matéria orgânica, proteína bruta, fibra em detergente neutro, fibra em detergente ácido, hemicelulose e lignina. Utilizou-se delineamento inteiramente casualizado, com quatro repetições, considerando-se os genótipos como tratamentos. Embora diferenças significativas tenham sido observadas entre os 11 genótipos, a composição químico-bromatológica de todos eles mostrou seu potencial para utilização na produção de silagem.

ABSTRACT. The objective of this study was to evaluate the effect of marigold flower extract and paprika on egg quality of Black Avifran laying hens in different periods of storage. A completely randomized design study with a 3x3 factorial scheme with three diets (control, paprika, and marigold flower extract) and three storage periods (0, 7, and 14 days) was carried out. The following metrics were evaluated: egg weight, yolk weight, shell weight; yolk color, albumen height, specific gravity, and Haugh unit as well as the yolk, shell, and albumen percentage relative to the total weight of the egg. There was no significant interaction between additives and storage time (p > 0.05) for most of the parameters evaluated. The only exception was observed for yolk color, in which the interaction effect between treatments was significant (p < 0.05). The effect of storage time was significant (p < 0.05) for albumen weight, albumen percentage, yolk color, albumen height, specific gravity, and Haugh unit, with reduction of these parameters over the evaluation period. The use of paprika and marigold flower extract in the diets of Black Avifran laying hens does not influence egg quality.

RESUMO. Objetivou-se com o presente trabalho avaliar o comportamento de cabras leiteiras da raça Saanen alojadas com ou sem a utilização da técnica de enriquecimento ambiental. Doze animais foram divididos em dois grupos iguais e designados a um dos seguintes tratamentos: baia com ou sem enriquecimento ambiental. Cinco objetos foram utilizados para enriquecer as baias: garrafa PET suspensa, garrafa PET solta no chão (ambas contendo milho como atrativo visual e auditivo), escova de limpeza fixada na parede, pneu suspenso e tronco de árvore para escalada. O comportamento das cabras foi avaliado por duas horas durante dez dias consecutivos e registrado por meio da amostragem focal instantânea durante intervalos de 10 minutos. Estatística descritiva foi calculada para os dados obtidos e criados gráficos de frequências. Animais em ambos os tratamentos tiveram frequências similares para os comportamentos relacionados ao consumo alimentar e autolimpeza. Entretanto, foi registrada maior frequência de estereotipias no tratamento sem enriquecimento ambiental. Foi observada maior interação com o objeto pneu suspenso, indicando a preferência dos animais pelo mesmo. Conclui-se que animais mantidos em ambiente enriquecido tiveram maior acervo comportamental e demonstraram maior preferência por determinados objetos.

ABSTRACT. The objective of the present study was to evaluate the behavior of lactating Saanen dairy goats housed with or without the use of environmental enrichment technique. Twelve animals were split into two equal groups and assign to one of two treatments: stall with or without enrichment. Five objects were used to enrich the stalls: plastic PET bottles suspended and freely on the floor (both filled with corn as a visual and auditory stimuli), general cleaning brushes fixed to the wall of the stall, suspended tire, and a tree trunk for climbing. The behavior of the goats was observed during two hours for 10 consecutive days. The behaviors were recorded using focal-animal sampling method, observing each animal during 10-minute period. Descriptive statistics were calculated plotting the results in behavior frequency charts. Animals on both treatments showed similar behaviors frequencies for food intake and self-cleaning. However, a higher frequency of stereotyped behaviors was registered in the treatment without environmental enrichment. The highest frequency of interaction was observed for suspended tire, indicating animal’s preference for this object. In conclusion, animals on enriched environment show more different behaviors than animals in non-enriched environment and showed greater preference for some object over others.