Effects of Different Forages Proportioning on Serum Biochemical Indexes,Production Performance and Economic Benefits of Ujumuqin Lambs
In order to analyze the effects of different forage combinations replacing part of concentrate feed on the health status,production performance and economic benefits of lambs,thirty healthy Ujumuqin male lambs of the 4-5 months old were selected and divided into five groups receiving different rations,namely control group,silage group,alfalfa group,Caragana group and complete group.The ratio of con-centrate to forage was 75∶25 in the control group and 50∶50 in the other groups.Daily food intake,body weight and serum biochemical indexes were measured and gross profits was calculated.The results showed that:(1)The activity of alanine aminotransferase(ALT)in the control group was significantly lower than that in the alfalfa and Caragana group,while aspartate aminotransferase(AST)and AST/ALT were sig-nificantly higher than those of the other groups(P<0.05).The serum urea content in the control group,alfalfa group,and Caragana group was significantly higher than that in the complete group and the silage group(P<0.05),and the serum triglyceride content in the silage group,complete group,and Caragana group was significantly lower than that in the control group.The serum cholesterol content in the complete group was significantly lower than that in the other groups(P<0.05).(2)The daily dry matter intake of the control group was significantly higher than that of the other groups(P<0.05).The daily weight gain of the complete group was significantly higher than that of the other groups(P<0.05),the silage group was the lowest,and there was no significant difference between the alfalfa group,Caragana group,and control groups.The control group had the highest feed-to-gain ratio,significantly higher than the complete group,alfalfa group and Caragana group(P<0.05).(3)The silage group had the lowest dietary price and cost,followed by the complete group,Caragana group and alfalfa group.The complete group had the highest weight gain value and gross profit of each sheep,followed by the alfalfa group,and the silage group had the lowest.Based on the above analysis,replacing 25%concentrate feed in the diet of house-fed lambs with high-quality forage could improve the health condition of lambs,and significantly improve their pro-duction performance and economic benefits,the combination of 10%alfalfa hay+10%Caragana powder+ 15%silage corn+15%corn straw+50%concentrate feed was the best,which was suitable for family pas-tures in Inner Mongolian pastoral areas.
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