法系大白猪性能测定研究初报
2016-10-19雷彬宋忠旭孙华李明波董斌科卢琴梅书棋
雷彬 宋忠旭 孙华 李明波 董斌科 卢琴 梅书棋
摘要:为了培育繁殖力高、生长性能好、能满足市场需求的大白猪新品系,对2011年引进的79头法系大白猪开展了适应性研究和性能测定。结果显示,经过两个世代的选育,法系大白猪的初产总产仔数14.00头,经产14.90头;同时,公猪达100 kg时间为164.53日龄,背膘厚为7.19 mm,日增重843.27 g, 母猪达100 kg体重时间172.93日龄, 背膘厚为9.21 mm,日增重823.74 g;屠宰率76.10%,瘦肉率65.48%,肌内脂肪含量1.93%。
关键词:法系大白猪;性能测定
中图分类号:S828 文献标识码:A 文章编号:0439-8114(2016)05-1224-03
DOI:10.14088/j.cnki.issn0439-8114.2016.05.034
Preliminary Study on the Performance of French Large White Pig
LEI Bin, SONG Zhong-xu, SUN Hua, LI Ming-bo, DONG Bin-ke, LU Qing, MEI Shu-qi
(Institute of Animal Husbandry and Veterinary Sciences/Hubei Key Laboratory of Animal Embryo and Molecular Breeding, Hubei Academy of Agricultural Sciences, Wuhan 430064,China)
Abstract:In order to cultivate new strain of Large White pigs which with good reproductivity, productive performance and large commercial potential,79 French Large White pigs were imported in 2011 and taken to successively selection and breeding. The adaptability study and performance measurement showed that the French Large White pigs had good performance. The total number born for gilts was 14.00 and 14.90 for sows by the selection of two generation. The age to 100 kg weight of male and female was 164.53 and 172.93 days, respectively. And the backfat of 100 kg, average daily gain for male (female) was 7.19 mm (9.21 mm),and 843.27g (823.74 g), respectively. The slaughter rate, lean meat percentage and intramuscular fat was 76.10%, 65.48% and 1.93%, respectively.
Key words:French large white pig; performance test
养猪业已进入微利时代,伴随养殖成本的增加,提升养殖效率,增加产出势在必行。从品种培育入手,选育高繁殖力的新品种(系),提高母猪繁殖性能,是提高规模化猪场生产水平和經济效益的最根本途径。
法系大白猪具有繁殖性能高,生长速度快,饲料利用率高,胴体瘦肉率高等特点[1],是培育优质高产的新品种(系)的理想材料。湖北省农业科学院畜牧兽医研究所原种猪育种场于2011年从法国引进了一批高产法系大白猪,在适应性研究和生产性能测定基础上组建基础群,进行群体继代选育,以期为培育繁殖力高、生长性能好、适应性强、满足中国市场需求的大白猪新品系奠定基础。
1 材料与方法
1.1 试验材料
试验于2011 — 2014年在湖北省农业科学院畜牧兽医研究所原种猪育种场进行,以引进的69头母猪,7个血统共10头公猪的法系大白猪建立基础群,进行适应性研究和性能测定,开展世代选育,实行完全闭锁的群体继代选育制度,一年一个世代,每世代允许少量的世代重叠,每年进行繁殖性能、生长性能、胴体性状和肉质性状测定分析。……
