不同酸度的乳酸菌饲料添加剂对6月龄梅花鹿消化率及小肠微生物氮流量的影响

The effect of different acidness lactic acid bacteria on intake,N balance,digestibility and microbial nitrogen flow in the small intestine of 6 month-old sika

试验通过研究不同酸度的乳酸菌添加剂对6月龄梅花鹿的采食量、氮平衡、消化率以及小肠微生物氮流量的影响,确定乳酸菌添加剂在梅花鹿饲喂中的适宜酸度。结果表明:添加不同酸度的乳酸菌可明显提高梅花鹿对DM、OM、CF、CP以及氮采食量(P<0.05),其中以未调酸的乳酸菌组各种营养成分采食量最高;DM、OM、CF采食量,各组间差异显著(P<0.05),氮的采食量,除调酸组与未调酸组间差异不显著外(P>0.05),其余各组间差异显著(P<0.05)。不同酸度的乳酸菌饲料添加剂可提高梅花鹿DOM、DCF、氮沉积以及小肠微生物氮流量,未调酸组的DOM、DCF、氮沉积以及小肠微生物氮流量显著高于对照组(P<0.05)。

Effect of different acidness lactic acid bacteria on feed intake, N balance,digestibility and microbial nitrogen flow in the small intestine of 6 month-old sika were investigated in the study, in order to determine the suitable pH value of lactic acid bacteria additives in ruminant animals. The results indicated that： Adding different acidity of lactic acid bacteria could significantly improve the sika intake of DM, OM, CF, CP, and nitrogen intake （P〈0.05）, and nutrient intake of pH=5.6 LAB groups were the highest in all the groups; but N intake, apart from insignificant between the pH=5.6 LAB group and pH= 3.72 LAB group （P〉0.05）, differences among other groups were significant （P〈0.05）. Adding different acidity of lactic acid bacteria could improve the sika intake of DOM, DCF, N balance, and microbial N of intestinal flow （P〈0.05）, and pH=5.6 LAB group sikas were significantly higher than the control group on the DOM, DCF, N balance, and microbial N of intestinal flow.