O experimento foi realizado em 8ha de pasto de Panicum maximum cv. Tanzania, com pastejo rotacionado de 7 dias de ocupação e 21 dias de descanso. Quatro tratamentos foram avaliados: bovinos pastejando isoladamente (BOV), ovinos pastejando isoladamente (OVI), bovinos e ovinos pastejando simultaneamente (SIM), e bovinos pastejando previamente aos ovinos (alternado - ALT). Vinte novilhas e 30 cordeiros Santa Inês foram utilizados. Contagem de ovos nas fezes (FEC) e coproculturas foram realizados. Sangue também foi colhido para examinar a série vermelha e branca, proteínas plasmáticas totais (TPP), albumina e hemoglobina. FEC e índice de patogenicidade estimada de nematoides nos ovinos foram menores no tratamento SIM. A proporção de Haemonchus spp. foi maior nos sistemas isolados de pastejo. Para os ovinos, os sistemas consorciados apresentaram redução na infecção endoparasitária, sendo SIM melhor que ALT. Para os bovinos, nenhuma diferença entre os sistemas de pastejo foi verificado. Entretanto, o pastejo simultâneo (ovinos e bovinos) pode ser uma ferramenta para reduzir a necessidade de tratamentos anti-helmínticos em ovinos.

This experiment was carried out on 8 ha of Panicum maximum cv. Tanzania pastures, with rotational grazing consisting of 7 days of occupation and 21 days of rest. Four treatments were evaluated: cattle grazing alone (BOV), sheep grazing alone (OVI), cattle and sheep grazing simultaneously (SIM) and cattle grazing followed by sheep (alternate - ALT). Twenty heifers and 30 male Santa Inês lambs were used. Fecal egg count (FEC) and fecal cultures were carried out. Blood was also collected to examine red and white cell series, total plasma protein (TPP), albumin and hemoglobin. FEC and estimated nematode pathogenicity index in sheep were lower in the SIM treatment. The Haemonchus spp. proportion was higher in isolated grazing systems. For sheep, mixed grazing was shown to reduce endoparasite infection, and SIM was better than ALT. For cattle, no difference between grazing systems was seen. Therefore, simultaneous grazing (sheep and cattle) may be a tool for reducing the need for anthelmintic treatments in sheep.

A genealogical analysis of registered Pantaneiro horses was carried out with 3647 males and 6794 females. Of these animals, 50.66% had identified sires and 48.86% identified dams. The number of pedigrees increased over the generations, with higher registration of parents of sires than dams. Two municipalities are responsible for almost 70% of all registers: i) Poconé (Mato Grosso State), where the headquarters of the breeders association is located and ii) Corumbá (Mato Grosso do Sul State), where EMBRAPA Pantanal conducts its research. The mean inbreeding was 0.04% and average relatedness was 0.13%. Mean generation interval was 8.20 years. There is moderate to high genetic differentiation between farms (15% of total genetic variation) while between municipalities there is little differentiation. Wright's fixation statistics were calculated and F IS (inbreeding coefficient of individuals relative to the subpopulation) values indicate some heterozygosity between farms but not municipalities, with overall F IT (inbreeding coefficient of individuals relative to the total population) close to zero. The municipalities with the highest number of animals (Poconé and Corumbá) import relatively fewer sires (45 and 67% respectively). Genetic indices from genealogical data on the Pantaneiro horse population show that inbreeding is under control.Future breeding plans should include germplasm exchange between municipalities. The conservation program for the Pantaneiro horse has been shown to be successful but careful planning is needed in the future to avoid inbreeding and changes in important breed traits given the increasing interest in the use of the breed in sporting competitions.

A ultrassonografia pode ser uma importante ferramenta para a avaliação da composição da carcaça por ser uma técnica não invasiva que permite quantificar diferentes tecidos em animais vivos. O objetivo deste trabalho foi estimar as correlações entre medidas tomadas in vivo, por meio do ultrassom e do adipômetro, e na carcaça de ovinos da raça Santa Inês. Utilizaram-se 81 machos, entre 8 e 18 meses de idade, com peso médio de 31 kg. As medidas in vivo obtidas por ultrassonografia foram medida diagonal longitudinal, área de olho de lombo longitudinal, medida diagonal transversal e área de olho de lombo transversal. Determinou-se o peso de carcaça quente, rendimento da carcaça, gordura de cobertura da carcaça, comprimento de carcaça, área de olho de lombo da carcaça e peso dos cortes comerciais: pernil, lombo, paleta, costela e pescoço. As análises de variância, componentes principais, regressão polinomial e correlação foram realizadas utilizando-se programa estatístico SAS®. Não houve diferença entre animais castrados e inteiros para qualidade e componentes de carcaça, indicando, portanto, que a castração não proporciona uma carcaça de melhor qualidade. Os animais com os pesos de pernil, paleta e costela maiores apresentam menores peso de pele, altura de cernelha e peso dos órgãos abdominais, caracterizando um biotipo de animal que seria mais desejável a ser selecionado. Peso vivo, comprimento corporal e área de olho de lombo por ultrassom (in vivo) podem ser usados para predizer a área do olho de lombo da carcaça, peso do pernil, comprimento da carcaça, peso da carcaça quente e da meia carcaça. No entanto, o peso do lombo, pescoço, costela, rendimento de carcaça e peso dos órgãos abdominais não podem ser preditos por estas medidas in vivo. As medidas realizadas com adipômetro não apresentaram correlações significativas com medidas da carcaça, o que indica que não são eficientes para esta predição e, portanto, não devem ser utilizadas.

Ultrassonography is an important option to evaluate carcass composition and quality, as it is a non-invasive technique which quantifies different tissues in live animals. The objective of this study was to estimate the correlation between measurements taken in vivo, using ultrasound and skinfold thickness, in sheep carcasses from Santa Inês breed. Eighty-one males, aging 8 to 18 months, and weighting on average 31 kg live weight were used. The measures taken in vivo by ultrassonography were longitudinal diagonal length, longitudinal rib eye area, transversal diagonal length, transversal rib eye area. Hot carcass weight, carcass yield, carcass fat thickness, carcass length, carcass rib eye area and commercial retail cut weight (leg, loin, shoulder, ribs and neck) were determined. The analyses of variance, main components, polynomial regression and correlation were carried out using SAS® statistical program. There was no difference between castrated and intact animals for carcass quality and components, indicating that castration does not provide better carcass quality. Animals with higher leg, shoulder and rib weights had lower skin weight, wither height and weight of abdominal organs, indicating a more desirable body type for selection. Body weight, body length and rib eye area by ultrasound (in vivo) can predict the rib eye area, leg weight, carcass length, hot and half carcass weight. However, loin, neck and rib weights, carcass yield and weight of abdominal organs cannot be predicted by these in vivo measurements. The measurements taken with skinfold showed no significant correlations with carcass measures, which indicates that they are not efficient for prediction of carcass components and therefore should not be used.