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建立种猪核心群提高商品猪质量的研究

A STUDY ON QUALITY IMPROVEMENT OF COMMERCIAL PIGS THROUGH NUCLEUS HERDS
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摘要 在广西10个工厂化猪场进行了提高商品猪质量的研究。通过建立种猪核心群,种猪综合指数选择,严格选种选配,使种猪生产性能和肉猪肥育性能,以及体型外貌的整齐度都有较大的改善。1993年与1991年比较,长白猪核心群产仔数提高5.8%,28日龄断乳重提高7.6%,商品杂交猪日增重提高12.6%,料重比降低5.9%。经t测定,多数经济性状P<0.01,差异高度显著。10个猪场每年产仔数增加4968头,可节约种猪料20万kg;每头商品猪可增加活重7.4kg,每年可增加活重72.74万kg,取得了显著的经济效益和社会效益。 factory pig farms to be established nucleus herds of breeding pigs for mating and selecting according to the comprehensive index of pigs from 1991 to 1993. The performance traits of breeding pigs, the fattening ability and the uniformity of body type were significantly improved. For example, the number born and body weight of 28-day old piglet in the nucleus herd of Landrace increased by 5.8% and 7.6% respectively.And the body weightof commercial fattening pigs increased by 12. 6%,and the ratio of feed to body weight decreased 5. 9%.The differences of most economic characters were significant by t-test (P<0. 01 ).Moreover,the economic efficiency was very good with an increase of number born of 4 968 per year,and a saving of 200 000 kg feed. Each commercial pig increased 7.4 kg of living weight with a total increase of 727 400 kg per year. The results showed that there weresignificant both economic and social benefits.
作者 李琼华
出处 《广西农业大学学报》 CSCD 1994年第3期257-262,共6页
关键词 种猪 质量 品种 factory pig farm nucleus herds of breeding pigs commercial pig dailyweight gain lean-meat percentage feed conversion ratio
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