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There were three isozyme (AMY1, AMY2 and AMY3) at the locus of amylase in Qinghai Merino, moreover, there were two genotypes of AMY2A and AMY2O at the AMY2. Monomorphism was tested at the locus of AMY in Gansu Alpine Merino. The degree of genetic variability estimated by Nei's expected average heterozygosity for the 6 blood protein loci was relatively higher in Gansu Alpine Merino and in Qinghai Merino than that in others, which indicated that there are higher genetic variations and richer genetic diversity in Alpine Merino.
从6个血液蛋白位点的Nei氏预期平均基因杂合度所估计的群体内的遗传变异以及与本研究其它群体的结果相比来看,甘肃高山细毛羊和青海细毛羊的群体内的遗传变异相对较大,而其它群体内的遗传变异则相对较小,说明高原型细毛羊群体内遗传变异程度较大,遗传多样性较丰富,具有较大的选择潜力,为高原型细毛羊进一步选育提高提供了遗传基础。
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The inhibin a gene、 the bone morphogenetic protein 4 (BMP4) gene and the bone morphogenetic protein 7 (BMP7) gene were studied as candidate genes on the prolificacy of Small Tail Han sheep. Single nucleotide polymorphisms of 5 ' regulatory region、 exon 1 of INHA gene;exon 2、 exon 3 and exon 4 of BMP4 gene and exon 2、 exon 3 of BMP7 were detected in high fecundity breed and low fecundity breeds (Chinese Merino sheep, Corriedale sheep and South African Mutton Merino sheep) by PCR-SSCP. The results indicated that there was a mutation (316C→T) in 5' region of INHA gene in Small Tail Han sheep, Chinese Merino sheep and Corriedale sheep, the same mutation did not exist in South African Mutton Merino sheep.
采用PCR-SSCP技术检测抑制素α(inhibin α,INHA)基因5'调控区、外显子1,骨形态发生蛋白4(bone morphogenetic protein 4,BMP4)基因外显子2、外显子3和外显子4以及骨形态发生蛋白7(bone morphogenetic protein 7,BMP7)基因外显子2和外显子3在高繁殖力绵羊品种以及低繁殖力绵羊品种(中国美利奴绵羊、考力代绵羊、南非肉用美利奴绵羊)中的单核苷酸多态性,同时研究这三个基因对小尾寒羊高繁殖力的影响。
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There were two genotypesin China Merino fecundity sheep,the BB and B+ mutation genotype was superior in Chinese merino fecundity sheep,the ewes with genotype BB and B+had 4.0 and 3.5 ovulations,genotype ++ had 1.56 ovulations averagely,The BB and B+ mutation genotypes were 2.44(P.01)and 1.94(P.01)ovulations more than with genotype ++ in the Chinese merino sheep.
绵羊的多胎是绵羊业多产、高产的基础。一般来说,家畜的繁殖性状是受多基因控制的数量性状,传统的选择方法对其遗传进展的改良是很慢的,世代间隔长。分子标记辅助选择为解决这一问题提供了新的方向和契机。
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merino:美利奴羊
擅长生双胞胎,机率高达90%以上,主要用来配种;特塞尔绵羊(Texel),瘦肉多脂肪少,占新西兰出口羊肉的65%;林肯羊(Lincoln),一头黑色卷毛,除了做地毯,还是五、六十年前法官和律师所带的假发原料;美利奴羊(Merino),毛如丝绸般洁白柔滑,
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merino:美利奴羊毛
美利奴羊毛(Merino)纤维是从澳大利亚的美利奴种绵羊身上提取加工的优质羊毛纤维,纤维弹性好,光泽柔和,毛质细而长,与莱赛尔纤维搭配后使整款产品的弹性使毛衫蓬松柔软,爽滑细腻,贴身穿着特别舒适.
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merino:美利奴
尽管我们不清楚"美利奴"(merino)羊的来源,但自从1278年和1344年起它们就分别出现在西西里和西班牙. 它们的名字可能源于摩洛哥的梅里尼兹(Merinids),或来自一个柏柏尔人部落. 热那亚人也许在沿着第勒尼安海(theTyrrhenianSea)引进它们的过程中起了一定作用.
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merino:美丽奴绵羊
迷你杜宾狗 miniature pinscher | 美丽奴绵羊 Merino | 哺乳动物学 mammalogy
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merino sheep:美利奴羊
"在撒克逊,选择原理对于美利奴羊(merino sheep)的重要性已被充分认识,以致人们把选择当做一种行业:把绵羊放在桌子上,研究它,就像鉴赏家鉴定绘画那样;在几个月期间内,一共举行三次,每次在绵羊身上都作出记号并进行分类,以便最后选择出最优良的,
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