BIOCHMICAL AND PHYSIOLOGICAL RESPONSES OF BROILER CHICKS SUPPLEMENTED WITH SOME AMINO ACIDS AND CREATINE

Abstract

Ebtsam Shaaban Ahmed Bakry: Biochemical and Physiological Responses of Broiler Chicks Supplemented with some Amino Acids and Creatine, Department of Biochemistry, Faculty of Agriculture, Ain Shams University, 2020. The main objective of this study was to evaluate the ability of amino acids (AA) and Creatine supplementation (either singly or in combination) to drinking water to overcome the negative responses of feeding broiler chicks on low protein diet (1990). The blood parameters, histological and immunological traits along with growth performance from hatching to marketing age. A total of 120 one day old were determined old, unsexed broiler chicks were obtained from a local hatchery. The chicks were divided into six treatment groups and subjected to different treatment for four weeks from the second week until the fifth week as follows: 1st group was kept as a control group, while the 2nd and 3rd groups were supplemented respectively (via drinking water) with 0.5 g and 1.0 g amino acid /L of drinking water. The 4th and 5th groups were supplemented with 0.5 g and 1.0 g Creatine /L of drinking water, respectively. The 6th group was supplemented with 0.5 g of AA and 0.5 g of Creatine/L. Broilers of control group were fed on another commercial diet containing 23% of protein and 3100 Kcal/ kg as recommended by NRC (1994), while other groups of chicks were fed on a diet obtaining 19% protein and 2900 kcal/Kg. The duration of the experiment was five weeks. The productive and biochemical responses were evaluate through measurement of were: live body weight, weight gain, blood plasma protein fractions, plasma lipids (cholesterol, triglycerides, high density lipoprotein (HDL) and low density lipoprotein (LDL). Transaminases (ALT and AST) activity indicative of liver function was measured. Kidney function test in terms of plasma creatinine, urea nitrogen and uric acid were also determined. Results showed that live body weight and weight gain of broiler chickens were significantly increased by AA