Effect of Dietary Lysine Regimens on Growth Performance and Meat Composition in Aseel Chicken

ABSTRACT A study was designed with the objective, to evaluate the effect of dietary lysine (Lys) regimens on growth performance and meat composition of Aseel chicken. In total, 540 day old chicks, 180 from each variety, were randomly assigned to 9 experimental groups in a 3 (Varieties: Mianwali (MW), Peshawari (PW), and Lakha (LK)) × 3 (Lys regimens: L1, L2 and L3:1.35, 1.30 and 1.25%) factorial arrangement under randomized complete block design (RCBD) with sex as block. Each experimental group was replicated 6 times with 10 birds in each with average weight of 29 gram. Feed intake (FI), weight gain (WG) and feed:gain ratio (F:G) parameters of growth performance and Dry Matter (DM), Ash, Crude Protein (CP) and Ether Extract (EE) parameters of meat composition were evaluated. The results indicated better (p=0.0006) WG and (p=0.0006) F:G was observed in MW verities. Among different Lys regimens, higher and medium level in the diet improved WG (p

摘要 本研究旨在评估日粮赖氨酸（Lys）方案对阿西尔鸡（Aseel chicken）生长性能及肉品组成的影响。试验共选取540只1日龄雏鸡，每个品种各180只，采用以性别为区组的随机完全区组设计（RCBD），按3（品种：米安瓦利鸡（Mianwali，MW）、白沙瓦鸡（Peshawari，PW）、拉卡鸡（Lakha，LK））×3（赖氨酸方案：L1、L2、L3分别对应1.35%、1.30%、1.25%）的析因设计随机分为9个试验组。每个试验组设置6个重复，每个重复含10只雏鸡，初始平均体重为29克。本试验测定了生长性能相关的采食量（FI）、增重（WG）及料重比（F:G）指标，以及肉品组成相关的干物质（DM）、粗灰分、粗蛋白质（CP）与乙醚浸出物（EE）指标。结果显示，米安瓦利鸡的增重（WG，p=0.0006）与料重比（F:G，p=0.0006）表现更优。在不同赖氨酸日粮方案中，较高和中等水平的赖氨酸日粮可改善雏鸡增重（WG，p