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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 ...
Digital infrared thermography of the scrotum, semen quality, serum testosterone levels in Nellore bulls (Bos taurus indicus) and their correlation with climatic factors
(2016-01-01)
The objective was to study the relationship of climatic conditions with the temperature of the scrotum surface and sperm quality through digital infrared thermography in Nellore bulls, raised extensively. In six bulls held ...
Performance and greenhouse gas emission of Nellore and F1 Angus × Nellore yearling bulls in tropical production systems during backgrounding and finishing
(2021-09-01)
This study investigated the performance, carcass traits, and greenhouse gas emission of Nellore and F1 Angus × Nellore yearling bulls raised under two [lenient (S1) and intensified (S2)] production systems during the ...
Use of bayesian inference to correlate in vitro embryo production and in vivo fertility in Zebu Bulls
(2011-12-01)
The objective of this experiment was to test in vitro embryo production (IVP) as a tool to estimate fertility performance in zebu bulls using Bayesian inference statistics. Oocytes were matured and fertilized in vitro using ...
Use of bayesian inference to correlate in vitro embryo production and in vivo fertility in Zebu Bulls
(2011-12-01)
The objective of this experiment was to test in vitro embryo production (IVP) as a tool to estimate fertility performance in zebu bulls using Bayesian inference statistics. Oocytes were matured and fertilized in vitro using ...
Puberty in South American Bos indicus (Zebu) cattle
(Elsevier B.V., 2004-07-01)
Puberty in Zebu heifers follows a pattern characterized by a decrease in the steroid feedback mechanism and an increase in LH concentration, which result in the first ovulation followed by a short estrous cycle and the ...
Puberty in South American Bos indicus (Zebu) cattle
(Elsevier B.V., 2004-07-01)
Puberty in Zebu heifers follows a pattern characterized by a decrease in the steroid feedback mechanism and an increase in LH concentration, which result in the first ovulation followed by a short estrous cycle and the ...