本试验旨在研究饲粮中玉米脱水酒精糟及其可溶物( DDGS)和维生素E(VE)水平对肥育猪生长性能、胴体和肉品质的影响.采用3×2两因子完全随机试验设计,设3个玉米DDGS水平(0、15％、30％)和2个维生素E水平(10、210 mg/kg).选取平均体重为(60±2) kg的“杜×长×大”三元杂交肥育猪48头(公母各占1/2),按性别、体重随机分为6个组,每个组8个重复,每个重复1头猪.试验期为42 d.结果表明:1)玉米DDGS水平对肥育猪平均日增重和料重比无显著影响(P＞0.05),对平均日采食量影响极显著(P =0.006),维生素E水平及玉米DDGS和维生素E的互作对生长性能无显著影响(P＞0.05)；2)玉米DDGS和维生素E水平及其互作对胴体重、屠宰率、胴体斜长、背膘厚度、板油率和眼肌面积等胴体品质评定指标影响均不显著(P＞0.05),胴体脂肪碘值随饲粮中玉米DDGS水平的提高而极显著升高(P=0.001)；3)玉米DDGS水平对肌肉pH、肉色、剪切力、滴水损失和大理石评分影响均不显著(P＞0.05),饲粮中添加210mg/kg维生素E可显著降低肌肉剪切力和滴水损失(P＜0.05).可见,在肥育猪基础饲粮中添加15％ ～30％玉米DDGS和210 mg/kg维生素E对其生长性能、胴体和肉品质无显著负影响.%This experiment was conducted to study the effects of dietary corn distillers dried grains with solubles (DDGS) and vitamin E (VE) on growth performance, carcass characteristics and meat quality of finishing pigs. The experiment was designed in a 3 ×2 factorial arrangement with three corn DDGS levels (0, 15% and 30% ) and two VE levels (10 and 210 mg/kg). A total of forty-eight crossbred pigs ( Duroc x Landrace x Large) with an average body weight of (60 ± 2) kg were randomly allotted into 6 groups with 8 replicates per group and one pig in each pen. The results showed as follows; 1) different levels of dietary corn DDGS had no significant effects on average daily gain and feed/gain (P >0. 05). With the increasing of dietary corn DDGS level, average daily feed intake was decreased significantly (P =0. 006). Diets containing VE and the interaction between DDGS and VE level had no significant effects on growth performance (P > 0. 05). 2) There were no significant effects of dietary DDGS, VE, and DDGS x VE on carcass characteristics, including carcass weight, dressing percentage, carcass length, back fat thickness, leaf lard percentage and longissi-mus muscle area (P >0. 05). Iodine value was increased significantly with the increasing of dietary DDGS level (P =0. 001). 3) Diets containing different levels of corn DDGS had no significant effects on meat quality, such as pH, meat color, shear force, drip loss and marbling score (P > 0. 05), and high level (210 mg/kg) of VE decreased shear force and drip loss significantly (P <0. 05). In conclusion, diets containing 15% -30% corn DDGS and 210 mg/kg VE have no significant negative influence on growth performance, carcass characteristics and meat quality of finishing pigs. [ Chinese Journal of Animal Nutrition, 2012, 24(2):314-321]
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