在半密集管理下对三个西非本土山羊品种的牛奶产量和成分进行比较评估
Helliot Kossi Dosseh1, Sedo Eudes Anihouvi2,3,4, Michel Kere5
1Laboratoire des Sciences Animales, Department of Sciences and technics of Animal Production, Faculty of Agricultural Sciences, University of Abomey-Calavi, Benin.
红玛拉迪山羊和西长腿山羊品种的牛奶产量更高,而西非矮山羊的牛奶更丰富. 这些发现支持可持续的西非山羊养殖和乳制品生产.
科学领域:
- 动物科学动物科学
- 乳制品科学 乳制品科学
- 农业经济学 农业经济学
背景情况:
- 羊奶在贝宁是一个未充分利用的营养资源,为特定人群提供了牛奶的替代品.
- 西非土著山羊品种具有生产牛奶的潜力,但仍未得到充分利用.
研究的目的:
- 评估和比较红马拉迪山羊 (RMG),西非矮山羊 (WAD) 和西长腿山羊 (LLG) 品种的牛奶产量和组成.
- 评估品种的适应性,并根据半密集型系统在贝宁北部提供可持续的山羊养殖实践信息.
主要方法:
- 从传统农场选择了48只山羊 (15只母羊,1只雄羊),在一个实验站管理.
- 在产后8日,28日和49日记录了每天的牛奶产量;分析了318个牛奶样本的脂肪,蛋白质,乳糖,SNF和pH.
- 利用了通用线性混合模型和相关性分析来评估数据.
主要成果:
- 品种之间牛奶产量的显著差异 (p < 0.05),RMG和LLG的表现优于WAD.
- WAD山羊产奶的脂肪含量较高;RMG的成分稳定,WAD下降 (除脂肪外),LLG的脂肪含量增加,SNF下降.
- 品种和哺乳期显著影响了牛奶的pH值;在SNF,蛋白质,乳糖和密度之间发现了强烈的相关性.
结论:
- RMG和LLG品种有望获得更高的牛奶产量和组成稳定性.
- WAD山羊适合生产高脂牛奶,提供一个利基乳制品.
- 选择性育种和加强养管理可以提高西非山羊养殖系统的乳制品生产率和可持续性.
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