Dual‐purpose Guzerá cattle exhibit high dairy performance under heat stress

The present study evaluated the heat stress response pattern of dual‐purpose Guzerá cattle for test‐day (TD) milk yield records of first lactation and estimated genetic parameters and trends related to heat stress. A total of 31,435 TD records from 4,486 first lactations of Guzerá cows, collected be...

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Veröffentlicht in:	Journal of animal breeding and genetics (1986) 2020-09, Vol.137 (5), p.486-494
Hauptverfasser:	Santana, Mário L., Pereira, Rodrigo J., Bignardi, Annaiza B., El Faro, Lenira, Pires, Maria F. Á., Andrade, Ricardo G., Perez, Bruno C., Bruneli, Frank A. T., Peixoto, Maria G. C. D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Animal lactation Animals Breeding Cattle Dairy cattle Female Genetic Variation - genetics Genotype Genotype-environment interactions Genotypes genotype‐by‐environment interaction Heat Heat stress Heat Stress Disorders - genetics Heat Stress Disorders - pathology Heat tolerance Heat-Shock Response - genetics Heat-Shock Response - physiology Heritability Hot Temperature - adverse effects Humidity Lactation Lactation - genetics Livestock breeding Milk Milk production Parameter estimation random regression reaction norm Regression analysis Regression models Temperature dependence Trends Zebu
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