Abstract
The poultry industry is one of the pillars of food security in the world, as it is relied upon to provide meat and eggs to meet the increasing food demands. Therefore, this study was designed to investigate the effect of L-carnitine and methionine supplementation to the standard diets of broiler chickens in productive performance of broiler (Ross 308). One Hundred- fifty broiler chicks unsexed (Ross 308) with an initial weight with 43 g, were obtained from Al-Habbaniya hatchery (commercial hatchery). All the animals were within an average weight of 40 g (one-day old chicks). The experimental groups were as follows: the animals in T1 group received basal diet without any addition, the animals in T1 group received basal diet supplemented with lead acetate 400 mg/kg feed , the animals in T3 group received diet supplemented with carnitine 300 mg + lead acetate 400 mg, the animals in T4 group received basal diet supplemented with methionine 100 mg + lead acetate 400 mg, the animals in T5 group received basal diet supplemented with methionine 100 mg + carnitine 300 mg + lead acetate 400 mg. Body weight gain and feed consumption were weekly recorded. Feed conversion ratio was also calculated. Results showed that Birds in (T5) fed diets with (carnitine + methionine) observed highest live body weights comparison with T3 (carnitine + lead acetate) and T4 (adding methionine+ lead acetate). Data of results showed no significant differences were recorded in body weight gain. Also, Results obtained increase with feed consumption for treatment T5, while birds in T1 and T4 recorded lowest means in feed consumed. However, birds in T4 and T5 observed best feed conversion ratio as compare with T1, T2 and T3. Therefore, it can conclude that addition carnitine and methionine enhanced broiler productive performance.
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