Author:
Carroll M. A.,Pearce J.,Basset J. M.,Gillard P. B.,Lawrence T. L. J.
Abstract
An experiment is described in which four pairs of individually fed identical twin calves were used to investigate the effects of castration at 1 and 7 months, on growth, efficiency of food utilization and carcass composition and conformation.The results indicate that up to 28 weeks of age the late-castrated animals wore superior in liveweight increase, width of head and efficiency with which they converted food to live weight. By slaughter time, at about 18 months, these differences, except width of head, had been eliminated.The carcasses from both treatments were very similar except that a slightly greater percentage of the total muscle occurred in the thoracic and abdominal muscles of the late-castrated animals than in the early-castrated ones. A statistically significant higher percentage of the total fat occurred as subcutaneous fat in the late-castrated animals than in the early-castrated ones.
Publisher
Cambridge University Press (CUP)
Subject
Genetics,Agronomy and Crop Science,Animal Science and Zoology
Reference5 articles.
1. Brannang E. (1959). Quoted by A. Hansson (1960). British Cattle Breeders Club Digest, no. 16.
2. A study of the growth and development of Jersey cattle
3. H.M.S.O. Belfast (1959). A Survey of Livestock Management in Northern Ireland.
4. The Effect of Age of Castration upon Rate and Economy of Gain and Carcass Quality of Beef Calves
Cited by
6 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献