Evaluation of bull prolificacy on commercial beef cattle ranches using DNA paternity analysis12
نویسندگان
چکیده
منابع مشابه
DNA-based paternity analysis and genetic evaluation in a large, commercial cattle ranch setting.
Deoxyribonucleic acid-based tests were used to assign paternity to 625 calves from a multiple-sire breeding pasture. There was a large variability in calf output and a large proportion of young bulls that did not sire any offspring. Five of 27 herd sires produced over 50% of the calves, whereas 10 sires produced no progeny and 9 of these were yearling bulls. A comparison was made between the pa...
متن کاملPotentially hazardous sulfur conditions on beef cattle ranches in the United States.
OBJECTIVE To analyze the sulfur content of water and forage samples from a geographically diverse sample of beef cow-calf operations in the United States and to estimate frequency and distribution of premises where forage and water resources could result in consumption of hazardous amounts of sulfur by cattle. DESIGN Cross-sectional study. SAMPLE POPULATION 709 forage samples from 678 beef ...
متن کاملBull Power: Examination of Beef Cattle Bulls for Breeding Soundness
T evaluation of bulls for breeding soundness is an effective and reliable way to identify bulls that are potentially poor breeders. This management technique can be used to greatest advantage if culling occurs before bulls are turned out with females. Also, the evaluation is an important means available to the producer for predicting bulls with satisfactory to excellent potential. This informat...
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ژورنال
عنوان ژورنال: Journal of Animal Science
سال: 2014
ISSN: 0021-8812,1525-3163
DOI: 10.2527/jas.2013-7217