Article
The effects of heat stress in Italian Holstein dairy cattle.
Journal of dairy science - 1 Jan 2014
Bernabucci U, Biffani S, Buggiotti L, Vitali A, Lacetera N, Nardone A
Abstract excerpt
The data set for this study comprised 1,488,474 test-day records for milk, fat, and protein yields and fat and protein percentages from 191,012 first-, second-, and third-parity Holstein cows from 484 farms. Data were collected from 2001 through 2007 and merged with meteorological data from 35 weather stations. A linear model (M1) was used to estimate the effects of the temperature-humidity index (THI) on...
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