Effect of Genetic Variation of Leptin Gene on Intake of Roughage and Concentrated Diet of Awassi Lambs

Abstract

This research was carried out in the animal farm at the University of Baghdad’s College of Agricultural Engineering Sciences between January 22 and April 2, 2022. The purpose of this research is to examine how variations in the leptin gene may influence feed conversion ratio, roughage intake, and concentrated diet consumption. Here, forty Awassi lambs are put to use. The (40) Awassi lambs were randomly assigned to separate pens when they were selected at 4–5 months old with an average birth weight of 25.4 kilograms. 66.67, 30.56, and 2.7% were found to be SNP (G>A) variants; the differences between these three groups were statistically significant (P0.01). Roughage feed derived from dry matter, organic matter, crude protein, ether extract, croud fiber, ash g/day, and metabolic energy MJ/kg dry matter () showed no significant differences in leptin gene variation. The results also showed that genetic stress Leptin gene had no effect on organic dry matter consumption (g/day), crude protein consumption (g/day), ash consumption (g/day), fat extract consumption (g/day), crude fiber consumption (g/day), or the amount of soluble carbohydrates and metabolite energy (MJ/kg dry matter) consumed.