Fearfulness and performance related traits in selected lines of Japanese quail (Coturnix japonica)
Fearfulness and performance related traits in selected lines of Japanese quail (Coturnix japonica)
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DOI：
10.1093/ps/81.3.321
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发表时间：
2002-03-01
期刊：
影响因子：
4.4
通讯作者：
Gourichon, D
中科院分区：
文献类型：
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作者：
Minvielle, F;Mills, AD;Gourichon, D
本试验对三个品系的日本鹌鹑的恐惧性和经济性状进行了研究。其中两个品系具有相同的遗传起源，并在紧张性不动（TI）的持续时间内接受了不同的选择，这是一种衡量恐惧的方法。选择TI持续时间较长（LTI）或较短（STI）的鸟类。第三系（DD）具有不同的遗传起源，并已被选择用于早期产蛋。恐惧，生长，残留的饲料摄入量，蛋的组成和生产的措施各不相同。DD系的TI分布与STI系的TI分布接近。剩余采食量和壳含量在DD系中最低。DD型鹌鹑的破蛋率高于其他品系。与LTI系鸟类相比，STI系鸟类具有更高的BW和产下更多但更小的蛋。LTI系鸡产蛋的蛋白质含量高于STI系鸡，但含壳率低于STI系鸡。当所有性状一起考虑时，STI系鸟类的总体趋势是表现出LTI鸟类，而DD系鸟类表现出中等表现。这一发现支持了恐惧和生产力之间存在关系的观点。然而，TI的偏态分布排除了估计与生产性状的相关性在LTI和STI线。在DD系中没有发现恐惧和生产相关性状之间的显着关系，这与恐惧和生产相关的概念相矛盾。
Fearfulness and economic traits were studied in three lines of Japanese quail. Two of the lines were of the same genetic origin and were subjected to divergent selection for the duration of tonic immobility (TI), a measure of fearfulness. Birds were selected for long (LTI) or short (STI) duration of TI. The third line (DD) was of a different genetic origin and had been selected for early egg production. Fear, growth, residual feed intake, and measures of egg composition and production varied among lines. The distribution of TI in line DD was closer to that from line STI. Residual feed intake and shell content were lowest in the DD line. The DD birds laid more broken eggs than quail of the other lines. The STI line birds had higher BW and laid more, but smaller, eggs than LTI line birds. Eggs laid by LTI line birds had higher albumen content, but lower percentage shell, than those laid by STI line birds. When all traits were considered together, there was an overall tendency for STI line birds to out perform LTI birds with DD line birds showing intermediate performance. This finding supports the notion that there is a relationship between fearfulness and productivity. However, the skewed distribution of TI precluded estimation of correlation with production traits in the LTI and STI lines. No significant relationships among fear and production-related traits were found in the DD line, which contradicts the notion that fearfulness and production are related.