The effect of dietary amino acid composition on egg production in blue tits
The effect of dietary amino acid composition on egg production in blue tits
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日粮氨基酸组成对蓝山雀产蛋量的影响
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
David C. Houston
中科院分区：
文献类型：
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作者：
S. Ramsay;David C. Houston
大多数关于动物食物供应和繁殖之间相互作用的研究都假设能量可能是限制鸡蛋数量和/或大小的因素。在本文中，我们研究了膳食蛋白质是否直接限制了鸟类的产蛋量。我们为繁殖蓝山雀提供两种食品补充剂，仅五种必需氨基酸的浓度不同。接受补充饮食的氨基酸平衡接近鸡蛋蛋白质形成所需的鸡只比对照鸡产下明显更大的窝（多18％），而接受其他方面相同的补充饮食但没有有利的氨基酸平衡的鸡并没有增加产蛋量。据我们所知，这是首次证明膳食氨基酸成分可能会限制自由生活的鸟类的产蛋量。
Most studies on the interaction between food supply and reproduction in animals have assumed that energy is likely to be the factor limiting egg number and/or size. In this paper, we investigate whether dietary protein proximately constrains egg production in birds. We provisioned breeding blue tits with two food supplements that differed only in the concentration of five essential amino acids. Birds receiving a supplementary diet containing an amino acid balance close to that required for egg protein formation laid significantly larger clutches (18% greater) than control birds, whereas birds receiving an otherwise identical supplementary diet but without a favourable amino acid balance did not increase egg production. To our knowledge, this is the first demonstration that dietary amino acid composition may limit egg production in free–living birds.