Maiorano G, Cavone C, McCormick R J, Ciarlariello A, Gambacorta M, Manchisi A
Dipartimento di Scienze Animali, Vegetali e dell'Ambiente, Facoltà di Agraria, Università degli Studi del Molise, 86100 Campobasso, Italy.
Meat Sci. 2007 May;76(1):182-8. doi: 10.1016/j.meatsci.2006.11.001. Epub 2006 Dec 29.
The effect of different dietary energy levels, with or without injections of vitamin E, on growth, carcass traits and intramuscular collagen (IMC) characteristics of growing lambs was studied. Twenty-four Ile de France ram lambs were evaluated in a 2×2 factorial design involving different DL-α-tocopheryl acetate injections (C, control=0 and V=150IU/wk, i.m. for eight wk) and energy level (N, normal=7.61 and L, low=6.47MJ/kg DM). Growth and slaughter performance, and IMC characteristics were not influenced by diet. DL-α-tocopheryl acetate increased ADG during suckling, while it did not affect live weight, carcass weight and dressing percentage. Vitamin E injections reduced carcass shrinkage but also had a negative effect on pelvic limb percentage. The Longissimus muscle pH values were higher in V than in C lambs. DL-α-tocopheryl acetate reduced IMC maturity and muscle hydroxylysylpyridinoline crosslink concentration, more markedly in lambs fed low energy diets.
研究了不同日粮能量水平（无论是否注射维生素E）对生长羔羊生长性能、胴体性状和肌内胶原蛋白（IMC）特性的影响。采用2×2析因设计对24只法兰西岛公羔羊进行评估，该设计涉及不同剂量的DL-α-生育酚醋酸酯注射（C，对照=0；V=150IU/周，肌肉注射，共8周）和能量水平（N，正常=7.61；L，低=6.47MJ/kg干物质）。生长性能、屠宰性能和IMC特性不受日粮影响。DL-α-生育酚醋酸酯增加了哺乳期的平均日增重（ADG），但对活重、胴体重和屠宰率没有影响。注射维生素E减少了胴体缩水，但对骨盆肢比例有负面影响。V组羔羊的背最长肌pH值高于C组。DL-α-生育酚醋酸酯降低了IMC成熟度和肌肉羟赖氨酸吡啶交联浓度，在低能量日粮喂养的羔羊中更明显。
