摘要
【Abstract】In recent years, agricultural by‐products have generated increasing interest as ruminant feed. In a completely randomized design with five experimental treatments, this in vitro study investigated the nutritional value of citrus pulp and onion peel as alternative feed for ruminants and their effects on rumen fermentation, digestibility, and gas production. The first group was the control (50% grass hay/50% concentrate mixture). The other four treatments represented citrus pulp and onion peel at inclusion levels of 10 and 20%, replacing the expensive, high‐quality feed ingredients such as the concentrate mixture. The chemical composition showed that citrus pulp is an energy‐rich material that could be included up to 20% to replace part of the concentrate in a mixed diet without any adverse impacts on rumen fermentation parameters. The onion peels were rich in fiber and minerals. Their inclusion in the diet of over 10% had detrimental effects on rumen fermentation. The inclusion of either citrus pulp or onion peel in the diet did not have the potential to reduce enteric methane production. In conclusion, citrus pulp showed promising results as a new feed for ruminants. It was effective when included in up to 20% of a ruminant diet, replacing the concentrate mixture.
摘要译文
【摘要】近年来，农业副产品作为反刍动物饲料引起了越来越多的兴趣。在完全随机的设计和五种实验治疗的完全随机设计中，这项体外研究研究了柑橘果肉和洋葱果的营养价值，作为反刍动物的替代饲料及其对瘤胃发酵，消化率和气体产生的影响。第一组是对照（50％草干/50％浓缩物混合物）。其他四种治疗方法代表10％和20％的包含水平的柑橘果肉和洋葱果，取代了昂贵的高质量饲料成分，例如浓缩物混合物。化学成分表明，柑橘果定是一种富含能量的材料，可以包含多达20％，以替代混合饮食中的一部分浓缩物，而不会对瘤胃发酵参数产生任何不利影响。洋葱皮富含纤维和矿物质。它们包含在10％以上的饮食中对瘤胃发酵有害。在饮食中包含柑橘果或洋葱果没有减少肠甲烷产生的潜力。总之，作为反刍动物的新饲料，柑橘果肉表现出令人鼓舞的结果。当包括20％的反刍动物饮食中，这是有效的，取代了浓缩物混合物。
Eslam Ahmed (0000-0002-6850-7815) [1];Abeer Gaafar [2];Takehiro Nishida (0000-0002-0146-9279) [3];. Agro‐industrial by‐products as ruminant feed: Nutritive value and in vitro rumen fermentation evaluation[J]. Animal Science Journal, 2024,95(1)