Improving Performance of Replacement Heifers in Hot Arid Environment Under Intensive Management
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منابع مشابه
Improving Performance of Replacement Heifers in Hot Arid Environment Under Intensive Management
Problem statement: Imported Holstein Friesian dairy cattle are exposed to hot arid climate in feedlot management in Kuwait. Desert climate is extreme reaching high 45-50°C in summer and low -4oC in winter at day and night respectively. High calf mortality, poor reproduction and milk yields were main constraints to viable dairying. The objectives of this study were to assess the magnitude of cal...
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Problem statement: A high mortality rate (crude mortality 43.6%) of pre-weaned dairy calves resulted in unavailability of replacement heifers in Kuwait. Dairy producers resorted to import pregnant heifers for herd replacement. This study was undertaken to investigate the effects of dam vaccination and age, serum Immunoglobulin (Ig) on disease syndromes and mortality in preweaned calves. Approac...
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Selection and management of replacement beef heifers involve decisions that affect future productivity of an entire cowherd. The decision to breed heifers as yearlings involves careful consideration of the economics of production and the reproductive status, breed type, or genetic make-up of the heifers involved. Reproductive competence is established as a consequence of a specific program of d...
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ژورنال
عنوان ژورنال: American Journal of Animal and Veterinary Sciences
سال: 2009
ISSN: 1557-4555
DOI: 10.3844/ajavsp.2009.85.91