Influencing Factors of Methane Emission from Grazing Sunit Sheep
This study investigated the effects of different management practices,crude protein levels in supplemental feed,and grazing systems on methane emissions from Sunit mutton sheep in Inner Mongolia.The results indicate that different management practices have a significant impact on CH4 emissions(P＜0.05),and the emission concentrations ranked as follows:grazing with supplementation＞housed feeding with alfalfa＞natural grazing,with the concentrations beings 0.32％,0.21％,and 0.18％,respectively.The level of crude protein in supplemental feeds has an extremely significant effect on methane emissions(P＜0.01),with the emission order being crude protein 14％＞17％＞20％,and concentrations being 0.36％,0.28％,and 0.24％,respectively.Under artificial pasture grazing conditions,both the rotational grazing and continuous grazing exert no significant impact on CH4 emissions from Sunite sheep(P＞0.05).Therefore,the livestock producers can select appropriate management practices and nutritional levels to ensure production while reducing CH4 emissions.
methane emission factorsruminantSunit sheepfeeding modegrazing system
万方数据
维普
