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首页> 外文会议>Conference of the New Zealand Society of Animal Production >Variation of wool between and across the fleeces of composite-breed strong-wool sheep in New Zealand
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Variation of wool between and across the fleeces of composite-breed strong-wool sheep in New Zealand

机译：新西兰复合品种强羊毛绵羊羊毛之间的羊毛的变化

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Many farmers in New Zealand have moved towards using composite-breed sheep flocks to increase the meat production and fecundity of their stock. We aimed to determine whether flocks with a wider genetic base had greater between and within-fleece variation than single-breed flocks. Wool from seventeen body sites of sheep from five flocks of diverse genetic background (Romney, Coopworth, and crosses with Texel, Finnish Landrace and East Friesian breed lines) were compared. Both mean fibre diameter and mean fibre curvature differed between flocks (P <0.001), and across the body (P <0.01). While fibre diameter was more consistent, fibre curvature was more variable across the finer fleeces of flocks with some Finnish Landrace influence. Wool was shorter in Texel crosses, resulting in more consistent length across body sites. Our data suggests that composite-breed sheep exhibit increased within-fleece variation of some wool traits and decreased variation of others. Of most significance was that the extentof wool variation across body sites varied considerably between sheep, regardless of their genotype. In general, there was little association between wool traits with respect to this across-fleece uniformity. Fleece uniformity can be assessed by sampling across the anterior-posterior axis. Selection of stock with more uniform fleeces for specific traits may aid the production of wool better specified to satisfy differentiated niche markets.
机译：新西兰的许多农民已经迈向使用综合品种绵羊群，以增加其股票的肉类生产和繁殖力。我们旨在确定具有更广泛的遗传基础的群体是否与单品羊群之间的羊毛变异更大。比较了来自五个不同的遗传背景（Romney，Coopworth和Texel，Finnish Landrace和East Friesian系列）的五群羊的羊毛中的羊毛。平均纤维直径和平均纤维曲率均在羊群（P <0.001）之间不同（P <0.01）。虽然纤维直径更加一致，但纤维曲率在羊群中的较细羊群中更具变量，具有一些芬兰兰地板影响。羊毛在卵石交叉口短，导致身体部位的长度更加一致。我们的数据表明，复合品种绵羊表现出一些羊毛特征的羊毛特征内的羊毛变异，并降低了他人的变化。最重要的是，无论其基因型如何，身体部位横跨身体部位的羊毛变异程度都多样化。一般而言，羊毛特征在羊毛均匀性方面几乎没有关联。通过在前后轴线上采样可以评估羊毛均匀性。针对特定特征的更均匀羊毛的库存可能有助于生产的羊毛生产更好地满足差异化的利基市场。

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