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首页> 外文会议>Workshop of the Australian Centre for International Agricultural Research >The effect of the Booroola gene on meat production efficiency in Texel sheep
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The effect of the Booroola gene on meat production efficiency in Texel sheep

机译：Booroola基因对Texel Sheep中肉类生产效率的影响

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The fecundity of the dam and the growth and slaughter quality of her progeny determine the efficiency of a lamb meat producing system. The Texel (T) breed has positive slaughter traits; however, its fecundity is mediocre compared to some other breeds.The Booroola Merino (BM) has a major gene (Fee3) for ovulation rate (OR) and litter size (LS). Hence, the Fee8 was introgressed into a Texel population through systematic backcrossing to improve the economic efficiency of the Texel breed further. From 1986 to 1995 the Booroola gene was introduced into a Dutch flock of Texel sheep by crossbreeding Texel dams with heterozygous Fj (BM x T) sires, the sons of BM sires, proven homozygous by a female progeny test. Female progeny were systematically backcrossed with purebred Texel sires. From 1995 onwards DNA genotyping was practised, and males carrying the Fee8 gene, of backcross generation R2 (T ((BM x T)T)) or higher, were used for breeding too.
机译：水坝的繁殖力和她的后代的生长和屠宰品质决定了羊肉生产系统的效率。 Texel（T）品种具有积极的屠杀特征;然而，它的繁殖力与其他一些品种相比是平庸的。Booroola Merino（BM）具有用于排卵率（或）和凋落物尺寸（LS）的主要基因（Fee3）。因此，通过系统的回报进一步提高葡素汁品种的经济效率，收益率陷入了卵素种群。从1986年到1995年，通过杂合的FJ（BM X T）Sires横切纹理坝，BM SIRE的儿子，通过女性后代测试杂种杂交地引入了Booroola基因的荷兰羊群。用纯血统的Texel Sires系统地回复了女性后代。从1995年开始，实践DNA基因分型，并且携带FEY8基因的雄性，回复率R 2（T（（（（bm×t）t）或更高，也用于育种。

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