MILK PRODUCTION AND REPRODUCTIVE TRAIT CAUSED BY LOC514211 GENE MUTATION IN DAIRY COWS
نویسندگان
چکیده
منابع مشابه
Milk production, milk composition, and reproductive function of dairy cows fed different fats1
1Dairy and Swine Research and Development Centre, Agriculture and Agri-Food Canada, PO Box 90, Lennoxville, Quebec, Canada J1M 1Z3; 2Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Wales SY23 3EB, UK; 3Welsh Institute of Rural Studies, The University of Wales, Aberystwyth, Llanbadarn Campus, Aberystwyth, Ceredigion SY23 3AL, Wales, UK; and 4L’Alliance Boviteq Inc...
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پژوهش حاضر با هدف بررسی اثر جیره حاوی کربوهیدراتهای غیرالیافی زیاد و بروز التهاب در گاوهای شیرده در دو آزمایش جداگانه انجام شد. در آزمایش اول 20 رأس گاو مبتلا به ورم پستان از دو گروه کم تولید و پرتولید (هر کدام 10 رأس) و 20 رأس گاو سالم از دو گروه کم تولید و پرتولید (هر کدام 10 رأس) انتخاب شدند. همه گاوها در دوره دوم و یا سوم شیردهی و در روزهای 80-120 پس از زایش بودند. میانگین تولید شیر در گروه...
Milk production and reproductive performance of dairy cows fed two concentrations of phosphorus for two years.
The performance of lactating Holstein cows in response to P supplementation was determined in a 2-yr study. Each year included confinement feeding for approximately the first two-thirds of lactation and grazing for the remaining one-third of lactation. In yr 1, 42 cows were assigned at calving to a low or high P diet within parity. Fourteen cows from the low P group and 16 cows from the high P ...
متن کاملEstimation of Economic Values for Fertility, Stillbirth and Milk Production Traits in Iranian Holstein Dairy Cows
The objective of present study was to derive the economic values for number of inseminations to conception, calving interval, milk yield and stillbirth, using economic data of 10 Iranian Holstein herds. The economic values were derived by using the profit function methods and differentiating a profit equation with respect to the traits of interest. The cow fertility costs herd amortization or r...
متن کاملMilk Production, Milk Fatty Acid Profiles and Blood Metabolites in Holstein Dairy Cows Fed Diets Based on Dried Citrus Pulp
The objective of the present study was to determine the effect of substitution of corn grain with dried citrus pulp (DCP) on milk composition, fatty acids profiles and blood metabolites in Holstein dairy cows. These parameters were measured in a replicated 4 × 4 latin square design experiment using eight Holstein cows. Each experimental period lasted 4 weeks. The four treatments were: control (...
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ژورنال
عنوان ژورنال: Journal of the Indonesian Tropical Animal Agriculture
سال: 2015
ISSN: 2460-6278,2087-8273
DOI: 10.14710/jitaa.40.4.191-198