The Effects of Two Species of Leucaena on In Vitro Rumen Fermentation, Methane Production and Post-Ruminal Protein Supply in Diets Based on Urochloa hybrid cv. Cayman
The Effects of Two Species of Leucaena on In Vitro Rumen Fermentation, Methane Production and Post-Ruminal Protein Supply in Diets Based on Urochloa hybrid cv. Cayman
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DOI：
10.3390/agronomy12030629
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发表时间：
2022-03-01
期刊：
影响因子：
3.7
通讯作者：
Arango, Jacobo
中科院分区：
文献类型：
--
作者：
Gaviria-Uribe, Xiomara;Castro-Montoya, Joaquin;Arango, Jacobo
本研究评估了包括两个不同的银合欢物种的基础上在体外发酵，甲烷生产和后瘤胃蛋白质供应的饮食中的基础上的Urostella杂交品种的缩合单宁的来源的影响。Cayman CIAT BR 02/1752草。在体外条件下，将银合欢CIAT 17263和银合欢ILRI 15551以两种比例（25%和50%w/w）与开曼草一起孵育，并使用/不使用聚乙二醇作为单宁结合剂。结果表明，银合欢基质产生的气体和甲烷比银合欢与聚乙二醇和不与聚乙二醇。未降解饲料+固体伴生微生物组分中的质量随着银合欢两种物种的包含水平的增加而线性下降，同时增加其氮含量。结果表明，银合欢缩合单宁具有较好的上级活性，两种银合欢单宁含量对饲料降解无影响，且未引起瘤胃蛋白质的降低。需要进一步的研究来区分不同银合欢物种中存在的单宁及其饮食效应。
This study evaluates the effects of the inclusion of two different Leucaena species as a source of condensed tannins based on in vitro fermentation, methane production and post-ruminal protein supply in a diet based on Urochloa hybrid cv. Cayman CIAT BR02/1752 grass. Under in vitro conditions, Leucaena leucocephala CIAT 17263 and Leucaena diversifolia ILRI 15551 were incubated in two proportions (25% and 50% w/w) with Cayman grass and with/without polyethylene glycol as a tannin-binder. The results show that substrates with Leucaena diversifolia produced less gas and methane than those with Leucaena leucocephala with and without polyethylene glycol. The mass in undegraded feed + solid associated microbes fraction decreased linearly with increasing level of inclusion of both species of Leucaena, while increasing its nitrogen content. It is concluded that the condensed tannins of Leucaena diversifolia possess the superior activity and that the tannin content of both evaluated Leucaenas did not affect the diet degradation, and reductions in post-ruminal protein did not occur in the present study. Further studies are needed to differentiate the tannins present in different Leucaena species and their dietary effects.