2012
DOI: 10.1590/s0102-09352012000200007
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Retardo da realização da IATF sobre o desempenho reprodutivo na estação de acasalamento de vacas de corte lactantes

Abstract: RESUMOCompararam-se efeitos de diferentes protocolos para a IATF com o acasalamento natural (Controle) sobre o desempenho reprodutivo de 249 vacas Aberdeen Angus, distribuídas em cinco grupos: Controle (n=50); Crestar 2º uso (n=64); OvSynch (n=65); Primer 1ºuso (n=35) e Primer 2º uso (n=35). A IATF dos animais dos grupos Crestar 2º uso, OvSynch, e Primer 1º uso foi realizada 27 dias após o início da estação do grupo controle e a IATF do grupo Primer 2º uso ocorreu 38 dias após o início da estação do grupocontr… Show more

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“…The results of this study also disagree with those of Gottschall et al (2012), who showed no significant difference in reproductive efficiency of beef heifers under different mating systems (TAI + NS and NS only). This can be explained by the difference in breed (Aberdeen Angus) and especially the hormonal protocol to which the animals were subjected (without the use of eCG).…”
Section: Discussioncontrasting
confidence: 99%
“…The results of this study also disagree with those of Gottschall et al (2012), who showed no significant difference in reproductive efficiency of beef heifers under different mating systems (TAI + NS and NS only). This can be explained by the difference in breed (Aberdeen Angus) and especially the hormonal protocol to which the animals were subjected (without the use of eCG).…”
Section: Discussioncontrasting
confidence: 99%