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Ultrasonographic changes of the testicular parenchyma pattern in young Nelore bulls
(Univ Fed Rio Grande Do Sul, 2009-01-01)
The ultrasononographic examination of testicles is a noninvasive and rapid method that, allied to clinical examination, can lead to an early diagnostic of testicles disorders. The aim of the present study is to enhance ...
Exploratory analysis of differences in sperm morphology in Nelore and Gir (Bos indicus) bulls
(Springer, 2014-06-01)
The aim of this study was to evaluate the effects of breed and season on semen quality parameters of zebu bulls. Data (1,632 registers) of semen production from Gir (n = 4) and Nelore (n = 15) bulls were collected between ...
Ultrasonographic characteristics of the testes, epididymis and accessory sex glands and arterial spectral indices in peri- and post-pubertal Nelore and Caracu bulls
(Elsevier B.V., 2020-01-01)
Ultrasonography can provide information about the integrity of organs; however, rarely is applied to the reproductive organ evaluation of bulls. The objective of the present study was to characterize and compare values for ...
Comportamento sexual de touros Zebuínos e Angus em central de coleta e processamento de sêmen
(Sociedade Brasileira de Zootecnia, 2008-02-01)
O comportamento sexual foi avaliado em 88 touros das raças Angus, Gir, Guzerá e Nelore, com 5 anos de idade, em média, peso médio de 906 kg e circunferência escrotal média de 41 cm, submetidos ao manejo reprodutivo em ...
Fertility-associated proteins in Nelore bull sperm membranes
(Elsevier B.V., 2006-01-01)
The present study was undertaken to evaluate the protein composition of the sperm membranes (SM) of Nelore bulls, assessing protein markers associated with bull fertility, and whether these markers can be used for predicting ...
Fertility-associated proteins in Nelore bull sperm membranes
(Elsevier B.V., 2006-01-01)
The present study was undertaken to evaluate the protein composition of the sperm membranes (SM) of Nelore bulls, assessing protein markers associated with bull fertility, and whether these markers can be used for predicting ...
Comportamento sócio-sexual e de manutenção de touros nelore durante a estação de monta
(2010-08-03)
Changes in the bull: cow proportion in natural breeding have been proposed, but there are not evaluations about the effect of these changes in the behaviour of Nellore bulls. The objective of this study was to test the ...
Comportamento sócio-sexual e de manutenção de touros nelore durante a estação de monta
(2010-08-03)
Changes in the bull: cow proportion in natural breeding have been proposed, but there are not evaluations about the effect of these changes in the behaviour of Nellore bulls. The objective of this study was to test the ...