贵州黑马羊繁育研究  

A study on the breeding of Guizhou black horse goat breeding

作　　者：宋德荣[1,2] 王嘉福[1] 周大荣 彭华 杨思维 江兴美 吴萍 吴蕊汝 

机构地区：[1]贵州大学动物科学学院,贵州花溪550025 [2]毕节市畜牧兽医科学研究所,贵州毕节551700

出　　处：《黑龙江畜牧兽医》2013年第6期52-54,共3页Heilongjiang Animal Science And veterinary Medicine

基　　金：国家农业科技成果转化资金项目(2012GB2F200408);贵州省2011年度农业科技攻关计划项目(黔科合NY字[2011]3064号);贵州省高层次人才科研条件特助经费项目(TZJF-2010年-034号);贵州省农业动植物育种专项(黔农育专字[2009]019号);毕节市农业科技攻关计划项目(毕科合字[2012]23号)

摘　　要：为了加快贵州黑马羊的扩群繁育及品种培育,试验采用核心群开放式选育及正反交试验方法,开展黑马羊选育提高、山羊有角与无角性状显隐性关系及无角与间性关系的研究。结果表明:选育后,核心群周岁公母羊体重分别为(29.77±5.51)kg、(25.18±5.67)kg,成年公母羊体重分别为(40.08±7.73)kg、(34.90±7.56)kg;基础群周岁公母羊体重分别为(26.59±3.68)kg、(24.09±4.60)kg,成年公母羊体重分别为(35.33±4.09)kg、(32.16±6.83)kg。周岁羊屠宰率达48.46%,产羔率达152.16%。经t检验,选育后核心群周岁、成年公母羊及基础群周岁、成年公母羊平均体重极显著高于选育前平均体重(P<0.01)。经有角♂×无角♀、无角♂×有角♀正反交试验,后代无角率为52.20%、有角率为47.80%;无角♂×无角♀杂交,后代无角率为75.32%,有角率为24.68%。无角对有角是显性,山羊间性与无角存在连锁关系,群体中出现间性羊的概率为3.45%。To speed up the breeding and expanding population in Guizhou black horse goat and the cultivation of varieties, the open breeding method of the core group and the reciprocal cross test, were used to carry out the studies of improving the black horse goat breeding, the dominant and recessive relations between horned and hornless traits, and the relation for inter - sexuality and hornless in goat. The results showed that the body weights of yearling male and female goats after breeding were （29.77 ± 5.51 ） kg and （25.18 ± 5.67 ） kg in the eore group, respectively ; the body weights of adult male and female goats were （40.08 ± 7.73 ） kg and （ 34.90 ± 7.56） kg, respectively. The body weights of yearling male and female goats after breeding were （26.59 ± 3.68 ） kg and （24.09 ± 4.60） kg in the base group, lvspectively ; the body weights of adult male and female gnats （35.33 ± 4.09 ） kg and （ 32.16 ± 6.83 ） kg, respectively. The slaughtered rate of goat was 48.46 % , and the lambing rate was 152.16%. The average body weights of the yearling and adult male and female goats between the core group and base group after breeding were significantly higher than those of the groups before breeding （P 〈 0.01 ） by the t - test. The results of reciprocal cross test with horned ♂× hornless ♀ and hornless ♂× horned ♀ showed that the hornless and horned rates in the hybrid offspring were 52.20% and 47.80%, respectively; the hybridized resuhs for hondess ♂× hornless ♀ showed that the hornless and horned rates in the hybrid offspring were 75.32% and 24.68% , respectively. The results indicate that hornless is dominant to horned, and there is a linkage relationship between the inter - sexuality and hornless in goat, and the probability of appearing inter - sexuality goat in the groups is 3.45%.

关 键 词：山羊 黑马羊 正反交试验 有角 无角基因显隐性 选育 

分 类 号：S826[农业科学—畜牧学]