TAHIRA BATOOL, SALMAN FAROOQ, NABILA ROOHI & ABDUL GHAYAS2

Biologia (Lahore), Vol.70, Iss. 1, Pages 28-35

Abstract

This experiment was designed to evaluate the effects of various lysine regimens(Effect of Different Lysine Regimen on Performance Characteristics and Economic Efficiency of First Progenyof Aseel Parents Flock) on the growth performance of local Aseel chicken progeny. In total, 240 day-old chicks constituting 60 of each Lakha, Peshawari, Mianwali and Mushki varieties, selected and placed in three-tier battery cages following Randomized Complete Block Design. These chicks were equally divided into three groups according to lysine regimens named L1 (1.3% lysine in starter, grower and finisher diets), L2 (1.4% in starter and grower and 1.2% lysine in finisher diet) and L3 (1.5% in starter, 1.3% in grower and 1.1% lysine in finisher diet) made accessible to them in phases for 0-6th weeks of their initial growth period. The same diet plan and schedule was followed by their parent’s flock. The data for growth parameters was analyzed by ANOVA technique and Duncan’s Multiple Range test (DMR) was applied to equate treatment means.(Effect of Different Lysine Regimen on Performance Characteristics and Economic Efficiency of First Progenyof Aseel Parents Flock) The findings of present experiment revealed that feed intake was non-significantly different (P>0.05). However, body weight, weight gain, feed conversion ratio, and feed efficiency were significantly (P<0.05) better in the progeny from parents fed L3 regimen. It was concluded that providing L3 regime of lysine in diet of parent can improve the growth performance of progeny.

INTRODUCTION

The significance of traditional backyard poultry is indispensable as an income generating source(Effect of Different Lysine Regimen on Performance Characteristics and Economic Efficiency of First Progenyof Aseel Parents Flock), especially for household womenfolk of tropical and semi-tropical areas (Rajkumar et al., 2017). Local poultry birds have great contribution and constitute about 80-99% of the total poultry genotypes being kept in villages, towns of developing and under developing countries worldwide (Batool, 2017). The share of indigenous birds is very important in poultry industry, livestock and its about 15 and 32 percent for meat and egg production, respectively (Pakistan Agriculture Research Council, 2017). They mostly keep local breeds of poultry birds such as Aseel chickens because of their high resistance to dangerous pathogens,(Effect of Different Lysine Regimen on Performance Characteristics and Economic Efficiency of First Progenyof Aseel Parents Flock) contagious diseases and abruptly changing drastic weather conditions (Jatoi et al., 2014). Aseel is the most resilient among the local chicken breeds with high weight at maturity, phenotypic characters i.e., upright posture, beautiful plumage coloration, pea comb, marvelous gait, high
vigor and resistance towards diseases making it an equally adjustable breed in all climatic conditions (Haunshi et al., 2012). Improvement in growth related parameters can be enhanced by improving in genetics, housing and nutrition (Pinheiro et al., 2011; Hussain et al., 2018). (Effect of Different Lysine Regimen on Performance Characteristics and Economic Efficiency of First Progenyof Aseel Parents Flock)As there is a finite reservoir of nutrients and energy within the avian embryo for supporting its growth and development. The embryo growth rate determines the metabolic needs, the fast growing breeds have more metabolic requirements than their antecedents and increased death rates, growth obstructions and low muscular deposit are the consequences of poor nourishment (Halevyo et al., 2000). Whereas, the chicks being deprived of food remain 50% deficient in immunity of IGF-1 of blood plasma (Kita et al., 2002). Many researchers have proved the breeder nutrition association and its influence on their off- springs (Calini, 2007; Hocking, 2007; Kid, 2003, 2015). (Effect of Different Lysine Regimen on Performance Characteristics and Economic Efficiency of First Progenyof Aseel Parents Flock)It has been worked out for several years to manipulate the parent flock diet keeping in view the improved production parameters in such a way to improve the growth of subsequent progeny which is more economical (Calini and Sirri, 2007).(Effect of Different Lysine Regimen on Performance Characteristics and Economic Efficiency of First Progenyof Aseel Parents Flock) The maternal nutrition has been reported to influence the progeny growth especially in heavy meat type breed (Foye et al., 2006; Zukiwsky et al., 2021). However, the contradictions also exist for maternal diet effects on the growth performances of their subsequent progeny (Lopez and Leeson, 1995). Lysine is considered as the first one limiting amino acid being used in formulation of feed as a crucial source of crude protein for synthesis of meat protein (Campestrini et al., 2010). (Effect of Different Lysine Regimen on Performance Characteristics and Economic Efficiency of First Progenyof Aseel Parents Flock)Studies have also been publicized that the increase in dietary lysine content during rearing phase between week 1-3 conquered an increase in body weight and body weight gain (Mateos et al., 2014; Faridi et al., 2015), while increase in dietary lysine content during the rearing period resulted in increased length and weight of digestive track in broilers (Franco et al., 2006; Beski et al., 2015; Ullah et al., 2012). Lysine supplementation in feed also increased the activity of pancreatic enzymes as well as digestion and absorption of nutrients during early phase of growth in broilers (Sklan and Noy, 2000).(Effect of Different Lysine Regimen on Performance Characteristics and Economic Efficiency of First Progenyof Aseel Parents Flock) Studies have also been carried out on phase- feeding of lysine to enhance the initial growth of Aseel which is very slow and it was found that 3- phased feeding lysine regimen was found to be more preferable as it improved the initial growth parameters and the livability percentage (Batool et al., 2018c). Keeping in view these foregoing facts the present study was formulated with the main purpose to evaluate the impact of various lysine regimens constituting the phase(Effect of Different Lysine Regimen on Performance Characteristics and Economic Efficiency of First Progenyof Aseel Parents Flock) feeding in parent flock and its subsequent impact on their first progeny.