Subsequent Effect of Lysine Regimens on Egg Characteristics of Native Aseel Chicken
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ABSTRACT This study was planned to evaluate subsequent effects of rearing under various lysine regimens on egg quality traits in Peshawari, Mushki, Mianwali and Lakha varieties of native Aseel. Ninety six pullets and 12 cockerels (24♀ and 3♂) from each variety were randomly chosen, placed in three-tiered cage units of equal space and standard conditions were followed for their maintenance. These birds were reared on three lysine regimens (L1, L2 and L3), wherein L1 containing 1.3% lysine was given in one phase from week 1-6 of age, L2 regimens entailing 1.4 and 1.2% lysine was smeared in two phases from week 1-3 and 4-6 of age, while in L3 regimen, lysine @ 1.5, 1.3 and 1.1% in diet was fed in three phases from week 1-2, 3-4 and 5-6 of age, respectively. Data were analyzed using two-way factorial ANOVA technique in SAS 9.1under randomized complete block design and significant means were compared through Duncan’s Multiple Range Test. Statistical analysis showed that weight of egg and shell, albumen weight, diameter and index, yolk weight and Haugh units (p≤0.05) improved significantly in L3 in Peshawari Aseel depicting the better egg quality traits. It was concluded that L3 regimen has positive impact on egg characteristics of Aseel chicken.