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Effects of pomegranate peel extract on ruminal and post-ruminal in vitro degradation of rumen inoculum of the dairy cow
Animal Biotechnology ( IF 3.7 ) Pub Date : 2020-02-14 , DOI: 10.1080/10495398.2020.1727492
Mohammad Javad Abarghuei 1 , Yousef Rouzbehan 1 , Abdelfattah Zeidan Mohamed Salem 2 , Mohammad Javad Zamiri 3
Affiliation  

Abstract

This experiment was carried out to study the effect of water extracted pomegranate peel extract (PE) on ruminal protein degradation and post-ruminal digestion in the dairy cow. PE was added at six levels of total phenolics (g/kg of the basal diet); 3.75 (PE1); 4.4 (PE2); 5.05 (PE3); 5.70 (PE4); and 6.35 (PE5). Rumen degradable crude protein (rdCP) decreased with PE addition (L < 0.0001), but total CP degradability (tdCP) was not affected. Compared to PE0, PE2, and PE3 diets showed higher (L = 0.054, Q = 0.029) digestibility of bypass CP (dBCP). Increasing levels of PE resulted in a decrease in proteolytic bacteria numbers (p < 0.0001). At PE4 and PE5 levels, total VFA and acetate concentrations linearly decreased compared to PE0. PE inclusion lowered the acetate:propionate ratio (L = 0.0001) and Ammonia-N production after 24 h (L = 0.0008) of incubation. The total number of protozoa, genera Dasytricha and Isotricha, and subfamilies Entodiniinae, Diplodiniinae, and Ophrioscolecinae decreased with increasing dietary PE concentration (p < 0.0001). The results suggest that all levels of PE addition reduce the protozoal population and Ammonia-N concentration. All PE levels slowed down protein degradation in the rumen but PE2 and PE3 showed the greatest effect.



中文翻译:

石榴皮提取物对奶牛瘤胃接种物瘤胃和瘤胃后体外降解的影响

摘要

本试验旨在研究水提石榴皮提取物(PE)对奶牛瘤胃蛋白质降解和瘤胃后消化的影响。以六种水平的总酚(g/kg 基础日粮)添加 PE;3.75 (PE1);4.4(PE2);5.05 (PE3); 5.70 (PE4); 和 6.35 (PE5)。瘤胃可降解粗蛋白 (rdCP) 随 PE 的加入而降低 ( L  < 0.0001),但总 CP 降解率 (tdCP) 不受影响。与 PE0、PE2 和 PE3 日粮相比 ,旁路 CP (dBCP) 的消化率更高(L  = 0.054,Q = 0.029)。PE水平的增加导致蛋白水解细菌数量的减少(p < 0.0001)。在 PE4 和 PE5 水平下,与 PE0 相比,总 VFA 和乙酸盐浓度呈线性下降。PE 的加入降低了醋酸:丙酸盐的比例 ( L  = 0.0001) 和 24 小时 ( L  = 0.0008) 的孵化后氨氮的产生。原生动物属的总数DasytrichaIsotricha,和亚家族EntodiniinaeDiplodiniinaeOphrioscolecinae随着饲料PE浓度降低(p < 0.0001)。结果表明,所有水平的 PE 添加降低了原生动物种群和氨氮浓度。所有 PE 水平都减缓了瘤胃中的蛋白质降解,但 PE2 和 PE3 显示出最大的影响。

更新日期:2020-02-14
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