Effects of Dietary Supplementation of Grape Seed Proanthocyanidins on Growth Performance, Slaughter Performance, Meat Quality and Serum Antioxidant Indexes of Lambs
YANG Wenjun, MU Chuntang, WANG Pengju, ZHANG Muzhou, ZHENG Weicai, HAO Xiaoyan, ZHANG Jianxin
College of Animal Science and Technology, Shanxi Agricultural University, Taigu 030801, China
Abstract：This experiment was conducted to investigate the effects of dietary supplementation of grape seed proanthocyanidins on growth performance, slaughter performance, meat quality and serum antioxidant indexes of lambs. Forty-eight 4-month-old Dorper×thin-tailed Han F1 hybrid ram lambs with similar body weight [(22.75±1.20) kg] were randomly divided into four groups with twelve lambs in each group. Lambs in four groups were fed basic diets and supplemented with 0 (control group), 10 (10GSPs group), 20 (20GSPs group) and 40 mg/kg BW (40GSPs group) grape seed proanthocyanidins, respectively. The pre-experimental period lasted for 15 days, and the experimental period lasted for 45 days. The results showed as follows: 1) the final body weight of 10GSPs and 20GSPs groups was significantly higher than that of the control group (P≤0.05). The average daily gain and average daily feed intake of 10GSPs and 20GSPs groups were significantly higher than those of the control group (P≤0.05). There was no significant difference in feed to gain ratio among all groups (P>0.05). 2) The live weight before slaughter of 10GSPs and 20GSPs groups was significantly higher than that of the control group (P≤0.05). The carcass weight and net meat weight of 10GSPs, 20GSPs and 40GSPs groups were significantly higher than those of the control group (P≤0.05). The eye muscle area of 40GSPs groups was significantly higher than that of the control group (P≤0.05). There were no significant differences in organ indexes among all groups (P>0.05). 3) The redness value after slaughter 1 h of 20GSPs group was significantly higher than that of control group and 10GSPs group (P≤0.05). The longissimus dorsi shear force of 20GSPs and 40GSPs groups was significantly lower than that of control group and 10GSPs group (P≤0.05). There were no significant differences in contents of moisture, crude ash, ether extract and crude protein in longissimus dorsi among all groups (P>0.05). 4) Compared with the control group, the activities of superoxide dismutase and glutathione peroxidase in serum were significantly increased (P≤0.05). In conclusion, dietary appropriate supplementation of grape seed proanthocyanidins can improve the growth performance and slaughter performance of lambs, and improve muscle quality. The recommended dietary supplemental dosage of grape seed proanthocyanidins is 20 mg/kg BW under the condition of this experiment.
O'GRADY M N,CARPENTER R,LYNCH P B,et al.Addition of grape seed extract and bearberry to porcine diets:influence on quality attributes of raw and cooked pork[J].Meat Science,2008,78(4):438-446.
[34]
LEE S H,JOO S T,RYU Y C.Skeletal muscle fiber type and myofibrillar proteins in relation to meat quality[J].Meat Science,2010,86(1):166-170.
[41]
WU S S,YANO S,CHEN J H,et al.Polyphenols from Lonicera caerulea L. berry inhibit LPS-induced inflammation through dual modulation of inflammatory and antioxidant mediators[J].Journal of Agricultural and Food Chemistry,2017,65(25):5133-5141.
ZHAO J X,LI Q,ZHANG R X,et al.Effect of dietary grape pomace on growth performance,meat quality and antioxidant activity in ram lambs[J].Animal Feed Science and Technology,2018,236:76-85.
KIM H S,QUON M J,KIM J A.New insights into the mechanisms of polyphenols beyond antioxidant properties;lessons from the green tea polyphenol,epigallocatechin 3-gallate[J].Redox Biology,2014,2:187-195.
