Effect Of Fermented Cassava Residue On Growth Performance,Blood Biochemical Index,Carcass Quality And Meat Quality Of Longlin Black Pig

This experiment aimed to study the effect of different proportion in diets of fermented cassava residue on growth performance,blood biochemical indicators,carcass quality and meat quality of Longlin black pigs.Theoretical basises were supported in order to develop local cassava residue as a new kind feed of Longlin black pigs.Using single factorial experiment design,twenty-one black pigs were randomly allocated to three groups and every group included seven pigs in this experiment.At the whole experimental period.the proportion of fermented cassava residue in diets in test group 1 was 2%and 6%in test group 2 while control group was fed with basic diet.The experiment lasted for fifty-six days while the preparing experiment was only seven days.The growth performance and blood biochemical indicators were assayed during the feeding experiment.And carcass quality and meat quality were also assayed at the end of the feeding experiment.The effect of fermented cassava residue on the growth performance of Longlin black pigs:average daily gain of test group 1 was increased 17.36 g and test group 2 was 5.55g than control group.It was stable(p>0.05).The effect of fermented cassava residue on the blood biochemical indicators of Longlin black pigs:1.FBG,TG,TC and LDL were stable(p>0.05).2.HDL in test group 2 was significantly than test group 1 and control group(p<0.05)The effect of fermented cassava residue on the carcass quality and meat quality of Longlin black pigs:1.carcass weight,pure meat percentage and thickness of backfat of all groups had a significant difference but stable(p>0.05).2.shear force,fleshcolor and holdingwater rate of two test groups were significantly increased than control group,and the shear force between test 1 and test 2 had a significant difference(p<0.05).3.The muscle amino acid composition of two test groups was significant stable than control group(p>0.05),but the proportion of protein of test group 2 was significantly higher than test 1 and control group(p<0.05).Conclusion:1.cassava fermentation residue amount of alternatives to the diet of corn breeding longlin black pig,when replacement amount at 2%to improve black pig production performance,daily gain more apparent.2.fermented cassava dregs of longlin black pig blood biochemical indicators,carcass and meat quality had no adverse effects.