贵州黑马羊间性、无角、颌下髯及颈部肉垂遗传特征分析  

Analysis on the genetic properties of Guizhou black horse-like goats with intersex,hornlessness,submaxillary beard and neck wattle

作　　者：宋德荣 范俊杰 张琼娣 周大荣 杨思维 彭华 吴萍 吴蕊汝 

机构地区：[1]毕节市畜牧兽医科学研究所,毕节551700 [2]毕节市牧垦场,大方551600

出　　处：《上海农业学报》2013年第4期60-63,共4页Acta Agriculturae Shanghai

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];贵州省科技厅;毕节地区行署;中科院昆明分院科技合作项目(省地院合2010-05)资助

摘　　要：通过实际观察、杂交试验、考察育种记录、遗传分析和适合性检验,对贵州黑马羊间性、无角、颌下髯以及颈部肉垂特征遗传规律进行了研究,同时分析和探讨了黑马羊相关遗传特征表现的基因表达方式和遗传关系。结果表明:①"无角×无角"繁殖的F_1代无角羊占72.41%,有角羊占24.14%,无角间性羊占3.45%;②"有角×有角"繁殖的F_1代有角羊为100%。③"有角×无角"、"无角×有角"的正反交试验,F_1代无角羊占52.20%、有角羊占47.80%。④对166只19个群体的黑马羊统计,颌下有髯率为80.72%,颈部有肉垂率为19.28%;无角(P)对有角(p)呈显性,无间性(I)对间性(i)呈显性,颌下有髯对无髯呈显性,颈部有肉垂对无肉垂呈完全显性;有角山羊基因型为ppII,正常无角羊基因型为PPII、PPIi和PpII、PpIi,间性羊基因型为PPii、Ppii,且山羊间性与无角存在连锁关系。Guizhou black horse-like goats＇ genetic properties such as intersex, hornlessness, submax- illary beard and neck wattle were researched by observation, cross experiment, breeding, genetic analy- sis and adaptability test,and the gene expression and genetic relation of some genetic properties were also analyzed and discussed. The results showed that 1）in the F1 of mating hornless goats with hornless goats,the hornless,horned, and hornless intersexual goats were 72.41%, 24.14% and 3.45% respec- tively;2）All the F1 of mating between horned goats were horned;3）In the horned ＇hornless＇ and ＇hornless horned＇ reciprocal cross experiments, F1 hornlesss and horned goats were 52. 20% and 47.80% respectively;4）In the 166 black horse-like goats of 16 populations,the goats with submaxillary beard was 80.72% and those with neck wattle were 19.28% ;The hornless（P）was dominant to the horned（p） ;The non-intersex（ I） was dominant to the intersex（ i）;The submaxillary beard was domi- nant to the beardless;The neck wattle was completely dominant to the non-wattled;The horned goat＇s genotype was ppII, the normal hornless goat＇s genotype was PPII, PPIi, PpII and PpIi,and the inter- sexual goat＇s genotype was PPii and Ppii, and also there was a linkage relation between the intersexual and the hornless.

关 键 词：贵州黑马羊 表型性状 间性 遗传特性 基因型 

分 类 号：S826[农业科学—畜牧学]