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首页> 外文期刊>Spanish Journal of Agricultural Research >Dietary supplementation with papaya (Carica papaya L.) leaf affects abundance of rumen methanogens, fermentation characteristics and blood plasma fatty acid composition in goats
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Dietary supplementation with papaya (Carica papaya L.) leaf affects abundance of rumen methanogens, fermentation characteristics and blood plasma fatty acid composition in goats

机译：膳食补充木瓜叶会影响山羊瘤胃产甲烷菌的含量，发酵特性和血浆脂肪酸组成

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The objective of this study was to test the effect of feeding papaya leaf (PL) on rumen microbial population, fermentation characteristics, blood fatty acid composition and antioxidant activity in goats. Three rumen fistulated male goats were assigned in a 3×3 latin square design using three levels of PL: no addition of PL in basal diet (control, CON, 50% concentrate + 50% alfalfa hay), 25% of alfalfa hay in basal diet replaced by PL (medium PL, MPL) and 50% of alfalfa hay in basal diet replaced by PL (high PL, HPL). Rumen fluid and blood plasma were sampled from the animals at the end of feeding trial (third week). Papaya leaf treatments (MPL and HPL) showed significant differences ( p 0.05) in terms of rumen fermentation parameters as compared to the CON group at different times of measurement. The concentration of methanogenic archaea (log 10 cell/L) decreased ( p 0.05) in both PL treatment groups as compared with CON group at all sampling times. The concentration of α-linolenic acid and total conjugated linoleic acid (CLA) were also higher ( p 0.05) in the blood of goats fed PL especially HPL, compared to the CON. Blood plasma malondialdehyde concentration (mM/mL) of PL treatment groups showed a significant reduction as compared with CON. Supplementation of PL allowed the modulation of rumen characteristics which might represent a feeding strategy to reduce methane emission by directly inhibiting methanogens while improving the health benefits of ruminant products.
机译：这项研究的目的是测试饲喂木瓜叶（PL）对山羊瘤胃微生物种群，发酵特性，血液脂肪酸组成和抗氧化活性的影响。在3×3拉丁方形设计中，将三只瘤胃有瘘管的雄山羊分配到三个水平的PL：基础日粮中不添加PL（对照，CON，50％精矿+ 50％苜蓿干草），25％基础苜蓿干草日粮以PL（中等PL，MPL）代替，基础日粮中50％的苜蓿干草被PL（高PL，HPL）代替。在喂养试验结束时（第三周）从动物中取样瘤胃液和血浆。与CON组相比，木瓜叶处理（MPL和HPL）在瘤胃发酵参数方面在不同的测量时间表现出显着差异（p <0.05）。在所有采样时间，两个PL处理组的产甲烷菌古细菌浓度（log 10细胞/ L）均比CON组降低（p <0.05）。与CON相比，饲喂PL（特别是HPL）的山羊血液中α-亚麻酸和总共轭亚油酸（CLA）的浓度也更高（p <0.05）。与CON相比，PL治疗组的血浆丙二醛浓度（mM / mL）显着降低。补充PL可以调节瘤胃特性，这可能是一种通过直接抑制产甲烷菌同时改善反刍动物产品的健康效益来减少甲烷排放的进食策略。

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