Costs and Benefits of Breed Utilization Strategies in Sheep
نویسنده
چکیده
involved in choosing appropriate criteria and procedures for problem~ ses of breed and mating system evaluation experiments in sheep are. nom lC ana iiterature is rev1ewed of expenments 1n Wh1Ch blOlog1cal or econom1C scn bed . has been investigated. The .range in relative economic merit from the lCl ency the best group in an expenment tYP1cally 1S from 100 to 120, w1th rest to 140 not uncommon for the best group in an experiment. Heterosis for esov~;aits per ewe mated has ranged from 2% to 26%. Suggestions are onn cd for considerati on 1n future stud1es on the econom1C ram1f1catlOns of esente tem and breed utilization strategies. Particularly critical is the I ng s~~sess accuratel y the f~ed costs ?f individual grazing sheep. .Also d tOll needed are bioeconom1c slmu latlOn models for each major phys1cal tlCa eYnt and management system for sheep production. lronm
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