Effects of Different Silage on Growth Performance,Slaughtering Performance,Immune Function,and Economic Benefits of Mutton Sheep
This experiment was designed to study the effects of alfalfa silage,maize silage and mul-berry silage replacement diets with some peanut seedlings on growth performance,slaughter perfor-mance,immune function and economic benefits of mutton sheep.A total of 80 Duhan crossbred fin-ishing mutton sheep were selected and randomly divided into four groups,with five replicates designed for each group and four sheep for each replicate.The control group was fed a basal diet,and the experimental group used alfalfa silage,corn silage and mulberry silage to replace 60%of the peanut seedlings in the basal diet,respectively.The results showed that compared with the control group,the use of alfalfa silage,corn silage and mulberry silage significantly increased the weight(P<0.05)and significantly decreased the feed-to-weight ratio(P<0.05)of mutton sheep;the use of alfalfa silage significantly increased the average daily weight gain of mutton sheep(P<0.05);and the use of alfalfa silage,corn silage and mulberry silage significantly increased the live weight,slaughter rate and eye muscle area(P<0.05);the use of alfalfa silage,maize silage and mulberry silage sig-nificantly increased the serum levels of Immunoglobulin A and Interleukin-2(P<0.05)and significantly decreased the serum levels of tumor necrosis factor-α and Interleukin-1β(P<0.05)in mutton sheep;the daily economic profit of silage alfalfa group mutton sheep increased by 19.47%.In summary,the partial re-placement of peanut seedlings with silage alfalfa,silage corn,or silage mulberry in the diets of mutton sheep can improve the growth and slaughter performance of sheep,improve the immune function of sheep,increase economic benefits,and the application of alfalfa silage has the best application effect.
silagemutton sheepgrowth performanceslaughter performanceimmune function
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