花生秸秆在福清山羊中的瘤胃降解特性

陈鑫珠; 林雅婷; 黄秀声; 刘景; 庄益芬; 翁伯琦; 黄勤楼; 唐兆秀; 陈炳钿

doi:10.19303/j.issn.1008-0384.2019.11.005

花生秸秆在福清山羊中的瘤胃降解特性

Degradation of Peanut Straws in Rumen of Fuqing Goats

摘要

摘要:
目的探究花生秸秆干物质（DM）、中性洗涤纤维（NDF）和酸性洗涤纤维（ADF）在福清山羊瘤胃内消化降解规律。
方法本试验选用3头安装有永久性瘤胃瘘管的福清山羊为试验动物，采用尼龙袋法，对4份不同地区不同季节采集的花生秸秆（花生秸秆1为2016年10月28日收获于清流、花生秸秆2为2017年6月19日收获于清流、花生秸秆3为2017年6月3日收获于福清、花生秸秆4为2017年11月10日收获于清流）样本的干物质（DM）、酸性洗涤纤维（ADF）和中性洗涤纤维（NDF）在各个时间点（4、8、16、24、36、48、72 h）的瘤胃降解率和降解参数进行测定。
结果花生秸秆2和花生秸秆4的粗蛋白质含量较高，中性洗涤纤维较低。在福清山羊瘤胃内，4种花生秸秆样本的DM、NDF和ADF在瘤胃内降解趋势类似，均随着降解时间延长呈现上升的趋势，48–72 h花生秸秆DM的降解率达到50%–57%。
结论综合评价，在清流10月底和11月初收获的两份花生秸秆的降解率较高，说明福清山羊对秋收花生秸秆消化率较高。

Abstract:
Objective Digestion of peanut straws (PSs) collected at different seasons and areas in rumen of Fuqing goats was studied.
Method Three Fuqing goats permanently in-planted with ruminal cannula were fed PS collected at different seasons and areas. PS1 was harvest at Qingliu on October 28, 2016, PS2 at Qingliu on June 19, 2017, PS3 at Fuqing on June 3, 2017, and PS4 at Qingliu on November 10, 2017. The in-rumen degradation rates of PS with respect of dried matters (DM), acidic detergent fibers (ADF), and neutral detergent fibers (NDF) in 4, 8, 16, 24, 36, 48 and 72 h were determined by placing the PS samples in Nylon bags.
Result PS2 and 4 had higher crude protein but lower NDF than the other specimens. The DM, ADF, and NDF degradation rates of all PSs were similar and increased with time in rumen. In 48–72 h, 50%–57% of DM in PS was degraded.
Conclusion PS 1 and 4 were shown to have higher degradation rate in the goat rumen indicating a preference in choosing PS harvested in autumn over the other time in a year.

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