【摘 要】
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A study was conducted to determine the effects of feeding sorghum distillersdried grains with solubles(SDDGS)on carcasses characteristics(live weight,whole net carcassrate,breast muscle percentage,thi
【机 构】
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Chongqing Academy of Animal Science,Chongqing Rongchang,China 402460
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A study was conducted to determine the effects of feeding sorghum distillersdried grains with solubles(SDDGS)on carcasses characteristics(live weight,whole net carcassrate,breast muscle percentage,thigh muscle percentage),muscle quality(meat color,shear stress,cooking loss rate,cooked meat percentage)and meat composition of China Micro Duck(CMD)drakes aged from 4 to 8 weeks.A total of 240 CMD drakes(aged 4 weeks and initial weight were496.7 g)were randomly allotted to 1 of 4 dietary treatments in randomized complete block design.The four treatments were S0(the control group),S5,S10,S15,indicate the dietary content ofSDDGS(0,5,10 and 15%,respectively).Each treatment with 60 drakes were equally divided into6 repeated test groups,each group with 10 drakes.The results showed that,S5,S10 and S15 coulddecrease the thigh muscle percentage linearly(P<0.01),however had no significant(p > 0.05)effect on other carcass characteristic and muscle quality indexes of living body weight(BW),whole net carcass yield(WNCY),breast muscle percentage(BMP),breast muscle color(BMC),thigh muscle colo(TMC),breast shear strength(BSS),cooking loss(CL),cooked meat percentage(CMP).For meat composition,the increasing level of SDDGS caused a linear and quadraticdecrease(p < 0.01)of crude protein and an linear and quadratic(p < 0.01)increase of crude fat ofthigh and breast muscle,while Breast muscle ash were not significant effected(p>0.05).Overall,this study revealed that in the three kinds of diets with SDDGS,S5 caused the minimal negativeimpact on carcass characteristics,muscle quality and meat composition.
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