精氨酸和精氨酸生素对断奶仔猪生长性能、器官重及生化指标的影响

试验选用相同胎次母猪的21日龄断奶杜洛克×长白×大约克健康仔猪120头,以栏为单位,依据仔猪栏平均体重(5.27 kg±0.63 kg)随机分为3组,每组5个重复,每个重复(栏)8头仔猪(公、母各半),分别饲喂对照日粮(基础日粮+2.05%丙氨酸)、精氨酸日粮(基础日粮+0.6%精氨酸)和精氨酸生素日粮(基础日粮+0.09% AAA),试验期为7 d,研究了日粮中添加精氨酸和精氨酸生素对断奶仔猪生长性能、器官相对重量和血液生化参数的影响。结果表明,日粮添加0.6%的精氨酸和0.09%的AAA,仔猪的平均日采食量、日增重有显著提高(P＜0.05);肝脏、肾脏、脾脏和心脏的重量高于对照组,但差异均不显著(P＞0.05);与对照组相比,精氨酸组和精氨酸生素组的血清尿素氮和碱性磷酸酶活性显著降低 (P＜0.05),其它血液生化参数差异都不显著(P＞0.05)。试验结果显示,日粮中添加精氨酸和精氨酸生素有利于缓解早期仔猪断奶应激,提高其生长性能,0.09%的AAA可以有效替代0.6%的精氨酸。

Effects of Dietary L-arginine and Arginine Activator Additive on Growth Performance and Biochemical Parameters of Serum in Weanling Piglets

120 crossbred piglets were weaned at 21 d of age and then had free access to diets with 2.05% alanine (the control group),the control group supplemented with 0.6% L-arginine(the L-arginine group) or 0.09% Argrinine Activartor Additive. The experiment lasted 7 d. The goal of experiment was to determine the effects of 0.6% L-arginine or 0.09% AAA on growth performance, internal organs weight and serum biochemical parameters. The results showed that ADG, ADFI, feed-weight ratio increased in the L-arginine group (P＜0.05), the liver, kidney, spleen and lung weight relative to body weight were lower (P＞0.05), and the heart weight were higher (P＞0.05) in L-arginine group and AAA group than that in the control group (P＜0.05). Compared to the control group, serum SUN and ALP were lower in the L-arginine group and the AAA group (P＜0.05). These yesults indicated that supplementation with L-arginine or AAA could velease early weaned stresses and improve growth performance of early-weaned piglets, and sopplementation with 0.09% AAA could institute 0.6% L-arginine in piglets.