Determination of some serum macroelement minerals levels at different lactation stages of dairy cows and their correlations
نویسندگان
چکیده
منابع مشابه
Determination of rumen fill, retention time and ruminal turnover rates of ingesta at different stages of lactation in dairy cows.
Rumen fill and turnover rates of liquid, grain, and hay in the gastrointestinal tract were measured using rare-earth elements as multiple markers in four rumen fistulated cows during the dry period and throughout lactation. Apparent digestibilities of dry matter, crude protein, neutral-detergent fiber and aciddetergent fiber were also measured. Hay to grain ratios of 82.5:17.5, 45:55, 57:43, an...
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چکیده ندارد.
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Genetic correlation of average somatic cell score at different stages of lactation with milk yield and composition in Holstein cows
Genetic and non-genetic correlations of the average somatic cell score (SCS) at different stages oflactation (100, 150, 200, 305 and 365 days in milk) with lactation performance were estimated based on thefirst lactation records of Iranian Holstein calving during 2000 to 2009. (Co) variance components wereestimated using derivative-free REML based on multiple traits animal models. The estimated...
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ژورنال
عنوان ژورنال: Scientific African
سال: 2020
ISSN: 2468-2276
DOI: 10.1016/j.sciaf.2020.e00351