Effects of sorghum distillers dried grains with solubles on the carcass characteristics and muscle quality of China Micro Duck drakes aged from 4 to 8 weeks.
A study was conducted to determine the effects of feeding sorghum distiller's dried grains with solubles (SDDGS) on carcasses characteristics (live weight, whole net carcass rate, 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 wk. A total of 240 CMD drakes (aged 4 wk and initial weight was 496.7 g) were randomly allotted to one of 4 dietary treatments in randomized complete block design. The 4 treatments were S0(the control group, S5, S10, S15, indicating the dietary content of SDDGS (zero, 5,10 and 15%, respectively). Each treatment with 60 drakes was equally divided into 6 repeated test groups, each group with 10 drakes. The results showed that S5, S10, and S15 could decrease the thigh muscle percentage linearly (P < 0.01); however, there was no significant (p > 0.05) effect on other carcass characteristic and muscle quality indexes of live body weight (BW), whole net carcass yield (WNCY), breast muscle percentage (BMP), breast muscle color (BMC), thigh muscle color (TMC), breast shear strength (BSS), cooking loss (CL), or cooked meat percentage (CMP). For meat composition, the increasing level of SDDGS caused a linear and quadratic decrease (P < 0.01) of crude protein and a linear and quadratic (P < 0.01) increase of crude fat of thigh and breast muscle, while breast muscle ash was not significantly affected (P > 0.05). Overall, this study revealed that in the 3 kinds of diets with SDDGS, S5 had the least negative impact on carcass characteristics, muscle quality, and meat composition.
Chongqing Academy of Animal Science, Chongqing Rongchang, China 402460.
H D
HD
Xie
Chongqing Academy of Animal Science, Chongqing Rongchang, China 402460 bulijun1979@163.com.
L J
LJ
Bu
Chongqing Academy of Animal Science, Chongqing Rongchang, China 402460.
Z Z
ZZ
Zhong
Chongqing Academy of Animal Science, Chongqing Rongchang, China 402460.
Y
Y
Huang
Chongqing Academy of Animal Science, Chongqing Rongchang, China 402460.
X W
XW
Peng
Chongqing Academy of Animal Science, Chongqing Rongchang, China 402460.
D J
DJ
Li
D000821:Animal Feed / Q000032:analysis; D000818:Animals; D004032:Diet / Q000662:veterinary*; D004372:Ducks / Q000502:physiology*; D002523:Edible Grain / Q000737:chemistry*; D008297:Male; D008460:Meat / Q000032:analysis / Q000592:standards*; D009132:Muscles / Q000502:physiology; D011897:Random Allocation; D045868:Sorghum / Q000737:chemistry*
China Micro Duck; SDDGS; carcass characteristic; muscle quality