Macías-Cruz U, Perard S, Vicente R, Álvarez F D, Torrentera-Olivera N G, González-Ríos H, Soto-Navarro S A, Rojo R, Meza-Herrera C A, Avendaño-Reyes L
Instituto de Ciencias Agrícolas, Universidad Autónoma de Baja California, Mexicali B.C., México, 21705.
Centro de Investigación en Alimentos y Desarrollo A.C., Hermosillo Sonora, México, 83000.
J Anim Sci. 2014 Dec;92(12):5762-8. doi: 10.2527/jas.2014-8208. Epub 2014 Nov 17.
The aim of this study was to evaluate effects of free ferulic acid (FA) supplementation on productive performance, some blood metabolite concentrations, and carcass characteristics of ewe lambs finished in a feedlot. Dorper×Pelibuey ewe lambs (n=20; BW=28.5±0.5 kg; age=5 mo) were individually housed in pens and assigned under a randomized complete block design to the following dietary treatments (n=10): daily feeding without (control) or with 300 mg of FA/animal. The feedlot feeding period lasted 34 d and then all ewe lambs were slaughtered. Free FA did not affect (P≥0.16) BW gain, ADG, DMI, and G:F during the first 17 d, but BW gain (P=0.10) and ADG (P=0.10) tended to decrease for FA from d 17 to 34 and from d 1 to 34 without affecting (P≥0.16) DMI and G:F in ewe lambs. Serum concentrations of glucose, cholesterol, triglyceride, total protein, and urea were not affected (P>0.05) by FA at d 1, 17, and 34 of the feeding period. Carcass characteristics were not affected (P>0.05) by FA. Stomach percentage tended (P=0.08) to decrease and leg yields increased (P=0.02) for FA. Other noncarcass components and wholesale cut yields were not affected (P>0.10) by FA. In conclusion, FA supplementation did not improve productive performance, metabolic status, and carcass characteristics of ewe lambs receiving a feedlot finishing diet.
本研究旨在评估补充游离阿魏酸（FA）对在饲养场育肥的母羊羔羊生产性能、一些血液代谢物浓度和胴体特性的影响。杜泊×佩利布埃母羊羔羊（n = 20；体重 = 28.5±0.5 千克；年龄 = 5 月龄）被单独饲养在栏舍中，并根据随机完全区组设计分为以下日粮处理组（n = 10）：每日不添加（对照组）或添加 300 毫克/只 FA。饲养场育肥期持续 34 天，之后所有母羊羔羊被屠宰。在最初的 17 天里，游离 FA 对体重增加、平均日增重、干物质采食量和料重比没有影响（P≥0.16），但从第 17 天到第 34 天以及从第 1 天到第 34 天，FA 组的体重增加（P = 0.10）和平均日增重（P = 0.10）有下降趋势，而对母羊羔羊的干物质采食量和料重比没有影响（P≥0.16）。在育肥期的第 1 天、第 17 天和第 34 天，FA 对血清葡萄糖、胆固醇、甘油三酯、总蛋白和尿素的浓度没有影响（P>0.05）。FA 对胴体特性没有影响（P>0.05）。FA 组的胃比例有下降趋势（P = 0.08），腿部产量增加（P = 0.02）。其他非胴体成分和分割肉产量不受 FA 影响（P>0.10）。总之，补充 FA 并不能改善接受饲养场育肥日粮的母羊羔羊的生产性能、代谢状况和胴体特性。
