Effects of different levels of yeast culture on growth performance,nutrient apparent digestibility and immune function of weaned piglets
The aim was to analyze the effects of yeast cultures with different added levels on the performance,nutrient apparent digestibility and immune function of weaned piglets.For this purpose,160 weaned piglets were selected and divided into control group,T1,T2 and T3.Four replicates were set for each group,and 10 piglets were included in each replicate.The control group was fed the basal diet,T1,T2 and T3 added 0.50%,1.00% and 1.50% yeast cultures to the basal diet,respectively,study period 35d to compare the effects of different levels of yeast cultures on piglets.The results of that study:after the trial,In the comparison of the three indicators of final weight,average daily weight gain and average daily food intake,All the weaned piglets in the T2 group were significantly higher than those in the control group,T1 and T3(P＜0.05);The material weight ratio of T2 was significantly lower than that of the other three groups(P＜0.05);The apparent digestibility of T2 crude protein,crude fat,phosphorus and calcium was higher than that of the control group,T1 and T3(P＜0.05),The apparent digestibility of each nutrient in T1 and T3 was higher than the control group(P＜0.05),There was no difference in nutrient apparent digestibility between T1 and T3(P＞0.05);The serum IgA level of T2 piglets was higher than the control group,T1 and T3(P＜0.05),There was no difference in serum IgA levels between control,T1 and T3 piglets(P＞0.05),There was no difference in serum IgG and IgM levels between the four treatments(P＞0.05).The results confirmed that feeding yeast culture to weaned piglets could promote their growth,strengthen immune function and improve the apparent digestibility of each nutrient,among which 1.00% addition level was the most ideal.
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