نتایج جستجو برای: holstein calf
تعداد نتایج: 24112 فیلتر نتایج به سال:
Relevance . One of the key types raw materials that ensure food security Russian citizens is milk. To obtain it, dairy cattle are used, including Holstein, created by absorbing breeding stock domestic black-and-white bulls Holstein breed. The study economically useful qualities a new genetic formation in Middle Urals zone both scientific and practical interest. Methods aim work to evaluate milk...
The main objective of this study was to estimate the genetic parameters for multi-trait evaluation of birth weight (BW), gestation length (GL) and calving difficulty (CD) in first-parity Iranian Holstein dairy cattle. The data included 29,950 calving records collected during 1995 to 2014 by the Animal Breeding and Improvement Center of Iran. A threshold-linear sire-maternal grandsire model was ...
A 1-month old female Holstein calf had not been able to stand since birth. Delivery was uncomplicated and no treatment had been administered before admission. On physical examination, the calf had slightly decreased body condition, but was bright and alert. The calf was in lateral recumbency with spastic extension of all four limbs and opisthotonus. If positioned in left lateral recumbency, the...
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