Influence of thermal stress on the productive and reproductive aspects of cattle – Review

Na bovinocultura leiteira existem diferentes sistemas de criacao, os quais podem influenciar no conforto termico dos animais. Os bovinos, por sua vez, tem mecanismos de regulacao termica para manter a homeostase e uma zona de termoneutralidade. Entretanto, esses animais tem significativa sensibilidade a radiacao solar e apresentam zonas termoneutras com temperaturas mais baixas do que a maioria das regioes brasileiras. Tal fato tem provocado grande impacto na economia leiteira devido aos efeitos negativos sobre o bem-estar, producao, reproducao e mudancas comportamentais das vacas leiteiras, alem de afetar toda cadeia produtiva, desde a gestacao, crescimento de bezerras e reproducao de machos. Desse modo, a presente revisao bibliografica tem por objetivo analisar os efeitos do estresse termico nos diversos aspectos da bovinocultura leiteira, mostrando o quao prejudicial essa pode ser.

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