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

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)。

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

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.