Effect of rumen fluke on feed digestibility and methane emissions in sheep.
Effect of rumen fluke on feed digestibility and methane emissions in sheep.
复制标题
瘤胃吸虫对绵羊饲料消化率和甲烷排放的影响。
DOI：
10.1007/s00436-022-07610-8
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发表时间：
2022
影响因子：
2
通讯作者：
Rutherford NH
中科院分区：
文献类型：
--
作者：
Rutherford NH
根据瘤胃吸虫的粪便卵数 (FEC)，将 36 只 18 个月大的母羊分配到三组中的一组 (n= 12)； C：对照（FEC = 0–5 epg），T：受影响（FEC ≥ 6 epg）并接受治疗，NT：受影响（FEC ≥ 6 epg）且未治疗。在试验开始前 14 天，母羊接受了羟氯扎胺治疗。母羊随意饲喂青贮饲料。消化板条箱和呼吸室用于测量饲料消化率和甲烷产量。干物质摄入量 (DMI)、饲料消化率和 CH4/DMI 在处理之间没有差异 (P>0.05)。然而，NT 母羊的 CH4/活重 (LW) 显着更大 (P<0.001)，而 C 和 T 母羊则相似。这项研究表明，高瘤胃吸虫负担会增加甲烷排放，但仅限于以体重（每公斤 LW）表示时。由于瘤胃吸虫感染与甲烷产生之间的联系此前尚未在文献中进行过研究，这些发现表明需要进一步研究以更好地理解这些关系。
Thirty-six ewes aged 18 months were assigned to one of three groups (n= 12) on the basis of faecal egg count (FEC) for rumen fluke; C: control (FEC = 0–5 epg), T: affected (FEC ≥ 6 epg) and treated, NT: affected (FEC ≥ 6 epg) and not treated. T ewes were treated with oxyclozanide 14 days prior to the trial commencing. Ewes were fed grass silage ad libitum. Digestibility crates and respiration chambers were used to measure feed digestibility and methane production. Dry matter intake (DMI), feed digestibility and CH4/DMI did not differ (P> 0.05) between treatments. However, CH4/live weight (LW) was significantly greater (P< 0.001) for NT ewes, while that of C and T ewes were similar. This study indicates that a high rumen fluke burden can increase methane emissions but only when expressed on a body weight basis (per kg LW). As the link between rumen fluke infection and methane production has not previously been investigated within the literature, these findings demonstrate the need for further research to better understand these relationships.