Seasonal pattern of mortality and relationships between mortality and temperature-humidity index in dairy cows
نویسندگان
چکیده
منابع مشابه
Seasonal pattern of mortality and relationships between mortality and temperature-humidity index in dairy cows.
The 2 studies described investigated seasonal variations of mortality and temperature-humidity index (THI)-mortality relationships in dairy cows. Mortality data were extracted from the Italian Bovine Spongiform Encephalopathy databases, which contain records on cows older than 24 mo that died on a farm from all causes (98% of total records), were slaughtered in an emergency state, or were sent ...
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15 صفحه اولEffect of temperature-humidity index on productive and reproductive performances of Iranian Holstein cows
Calving records from April 1996 to December 2005 comprising 31863 calving events of 1173 dairy cows in a large commercial dairy herd were used to evaluate the effects of heat stress, using temperature-humidity index (THI) on milk yield and composition and reproductive performance of Holstein dairy cows under humid climatic conditions of Rasht in Iran. THI values were grouped into six groups: 30...
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15 صفحه اولEffect of the temperature-humidity index on body temperature and conception rate of lactating dairy cows in southwestern Japan.
In the present study, we investigated the relationship between the temperature-humidity index (THI) and the conception rate of lactating dairy cows in southwestern Japan, one of the hottest areas of the country. We also investigated the relationship between measurement of the vaginal temperature of lactating dairy cows as their core body temperature at one-hour intervals for 25 consecutive days...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 2009
ISSN: 0022-0302
DOI: 10.3168/jds.2009-2127