ISSN: 2347 - 7830
低羊粪优势天然牧草的营养价值及其对大羊精液性状的影响
牧场评价是提高家畜生产繁殖性能和合理利用牧场的重要手段。然而,这在埃塞俄比亚西部几乎没有引起关注。在埃塞俄比亚西部的Bako农业、技术和职业教育和培训学院,研究了以anamesa草为主的天然牧场的营养价值及其对Horro公羊种子性状的影响。划定了1公顷的牧场,允许18只一岁大的大羚羊放牧120天。采用多级系统估算了放牧草地的生物量产量,其中从划界放牧区内的5个正方形(1 × 1 m大小)中收获牧草。使用标准的实验室程序分析了牧草的化学成分。放牧期间每两周采集一次种子性状数据。结果表明,天然牧草的干物质产量(0.346 t/ha)和粗蛋白质产量(6.07%)均较低,体外可消化有机质(占DM的54.61%)较低,酸性洗涤纤维(67.78%)较高。总灰分和代谢能分别为8.96%和8.19 MJ/kg DM。头部和总精子异常在放牧期均有显著变化。 This study demonstrated that the natural pasture dominated with Hyparrhenia anamesa grass cannot support optimal seminal attributes, due to both inadequate quantity and low quality of the pasture mainly during dry period. Overall results suggest the importance of supplementation and/or looking for other management option to enhance the reproductive performance of Horro rams while not further degrading pasture productivity
Abera塞尤姆