RESUMO
This study aimed to evaluate the correlation between the scrotal circumference and thoraxcircumference and between the scrotal circumference and body weight of Anglo-Nubian bucks from a livestockexhibition in Maranhão, Brazil. 15 bucks were equally divided into three groups according their ages: G1 with9 to 12 months old animals , G2 with 14 to 19 months old animals , and G3 with 22 to 29 months oldanimals. The measurements were taken while the event was happening. The data was subjected to thecorrelation coefficient of Pearson. The measures of the scrotal circumference had a positive correlation with thethorax circumference in the groups G1 and G2. G1 group also presented a positive correlation for the bodyweight. However, in this study, it was observed a negative correlation between the scrotal circumference andthorax circumference measures for the animals from the G2 and G3 groups.
Assuntos
Animais , Extremidade Superior , Peso Corporal , Ruminantes/anatomia & histologia , Ruminantes/crescimento & desenvolvimento , Ruminantes/fisiologia , ReproduçãoRESUMO
This study aimed to evaluate the correlation between the scrotal circumference and thoraxcircumference and between the scrotal circumference and body weight of Anglo-Nubian bucks from a livestockexhibition in Maranhão, Brazil. 15 bucks were equally divided into three groups according their ages: G1 with9 to 12 months old animals , G2 with 14 to 19 months old animals , and G3 with 22 to 29 months oldanimals. The measurements were taken while the event was happening. The data was subjected to thecorrelation coefficient of Pearson. The measures of the scrotal circumference had a positive correlation with thethorax circumference in the groups G1 and G2. G1 group also presented a positive correlation for the bodyweight. However, in this study, it was observed a negative correlation between the scrotal circumference andthorax circumference measures for the animals from the G2 and G3 groups.(AU)
Assuntos
Animais , Ruminantes/anatomia & histologia , Ruminantes/crescimento & desenvolvimento , Ruminantes/fisiologia , Extremidade Superior , Peso Corporal , ReproduçãoRESUMO
The objective of the present study was to evaluate the effects of age and genetic group in bulls, and determine the relationship between these two factors on testicular biometry (scrotal circunference and testicular consistency). One hundred and ninety Nellore Bulls and 447 crossed Nellore-European bulls were used when aged 20 and 24 months. Scrotal circunference and testicular consistency were found to be influenced by genetic group, age and genetic group and age interaction. Higher scrotal circunference and testicular consistency were fond in crossed bulls as compared to Nellore ones, both at 20 and 24 months of age.
O objetivo deste trabalho foi estudar os efeitos da idade, do grupo genético e da interação entre idade e grupo genético, sobre as biometrias testiculares (circunferência escrotal e consistência testicular) Foram avaliados, aos 20 e 24 meses de idade, 190 touros Nelore e 447 touros cruzados Nelore-europeu. Aos 24 meses os exames foram repetidos. A circunferência escrotal e a consistência testicular foram influenciadas pelo grupo genético, idade e interação grupo genético x idade. Foram encontradas maiores médias de circunferência escrotal e menores de consistência testicular em cruzados que em Nelore, tanto aos 20 quanto aos 24 meses. Correlações entre circunferência escrotal As correlações entre circunferência escrotal e idade, observadas no presente experimento, foram baixas para os touros Nelore aos 20 meses e aos 24 meses assim como para os cruzados aos 20 meses e aos 24 meses, entretanto, as correlações entre circunferência escrotal e peso corporal foram maiores. As correlações entre consistência testicular e idade e entre consistência testicular e peso corporal foram baixas para a maioria dos cruzados, para os cruzados em conjunto e para os Nelores.