Selvaggi Maria, Laudadio Vito, Dario Cataldo, Tufarelli Vincenzo
Department DETO - Section of Veterinary Science and Animal Production, University of Bari 'Aldo Moro', 70010, Valenzano (BA), Italy.
J Sci Food Agric. 2014 Dec;94(15):3090-9. doi: 10.1002/jsfa.6750. Epub 2014 Jun 17.
Sheep is the second most important dairy species after cow worldwide, and especially in the Mediterranean and Middle East regions. In some countries, the difficult environmental conditions require a peculiar adaptation and, in these contexts, sheep are able to provide higher quality protein than cattle. In the least-developed countries, the amount of dairy sheep and ovine milk production is progressively increasing. In order to improve dairy productions, in particular those with local connotations, it is necessary to obtain in-depth information regarding milk quality and rheological properties. The genetic polymorphisms of milk proteins are often associated with quantitative and qualitative parameters in milk and are potential candidate markers that should be included in breeding strategies similar to those already available for cattle. Due to the current and growing interest in this topic and considering the large amount of new information, the aim of this study was to review the literature on sheep milk protein polymorphisms with a particular emphasis on recent findings in order to give scientists useful support. Moreover, the effects of different protein variants on milk yield and composition are discussed.
绵羊是全球仅次于奶牛的第二重要的产奶物种，在地中海和中东地区尤为如此。在一些国家，恶劣的环境条件需要特殊的适应性，在这些情况下，绵羊能够提供比牛更高质量的蛋白质。在最不发达国家，奶羊数量和羊奶产量正在逐步增加。为了提高奶产量，特别是具有地方特色的奶产量，有必要深入了解牛奶质量和流变学特性。乳蛋白的遗传多态性通常与牛奶的数量和质量参数相关，是潜在的候选标记，应纳入与牛已有的育种策略类似的育种策略中。鉴于目前对该主题的兴趣不断增加，并考虑到大量新信息，本研究的目的是回顾关于绵羊乳蛋白多态性的文献，特别强调最近的研究结果，以便为科学家提供有用的支持。此外，还讨论了不同蛋白质变体对产奶量和成分的影响。
