Effects of Different Starch Source Diets on Growth Performance,Slaughter Performance,Meat Quality and Serum Biochemical Indices of Meat Rabbits
This experiment aimed to investigate the effects of different starch source diets on growth perform-ance,slaughter performance,meat quality and serum biochemical indices of meat rabbits.A total of 160 Ira meat rabbits at 35 days of age,weaned at the same time and with similar body condition,were randomly divid-ed into 4 groups with 8 replicates per group and 5 rabbits per replicate,half male and half female in each group.The experimental groups were designated as the corn group,wheat group,tapioca group and sweet po-tato group.Each respective group was fed a experimental diet in which corn,wheat,tapioca,or sweet potato served as the sole source of starch,while ensuring that the energy and nitrogen content of each experimental di-et remained consistent.The pre-trial phase spanned a duration of 7 days,while the experimental phase extended over a period of 28 days.The results showed as follows:1)there were no significant differences in feed to gain ratio,diarrhea frequency and mortality rate among all groups(P＞0.05).The corn group exhibited a sig-nificantly greater average daily gain compared with both the sweet potato group(P＜0.01)and the tapioca group(P＜0.05).The corn group exhibited a significantly higher average daily feed intake compared with both the tapioca group(P＜0.01)and the sweet potato group(P＜0.05).The average daily gain and average daily feed intake of the wheat group were significantly higher than those of the tapioca group and sweet potato group(P＜0.01).2)There were no significant differences in semi-eviscerated weight,eviscerated weight,semi-e-viscerated rate and eviscerated rate among groups(P＞0.05).3)There were no significant differences in meat color,pH(45 min,24 h and 48 h),cooking loss,drip loss(24 and 48 h)and shear force among all groups(P＞0.05).4)The serum aspartate aminotransferase activity of the sweet potato group was significantly lower than that of the wheat group(P＜0.05).In conclusion,under the conditions of this experiment,corn or wheat starch as dietary starch source can improve the growth performance of meat rabbits than tapioca and sweet pota-to starch,and different starch sources have no obvious adverse effects on slaughter performance,meat quality and serum biochemical indices.[Chinese Journal of Animal Nutrition,2024,36(4):2594-2602]
万方数据
维普
