Effect of feeding graded levels of hatchery waste meal on the performance and carcass yield of broiler chickens

摘要

This study aimed to evaluate the effect of feeding dietary graded levels of hatchery waste meal (HWM) on the performance and some carcass characteristics of broiler chickens. The field trail was carried out in an open sided deep litter poultry house in poultry farm situated at Atbra Town in North Sudan. The experiment for five weeks. One hundred and sixty 7days-old commercial unsexed broiler chicks (Hubbard F15) were utilized in the experiment. They were divided into four dietary treatments with four replicates/each (10 birds / replicate) following the complete randomize design. Four experimental diets contain 0.0, (control), 3%, 6% and 9% HWM were formulated in order to meet the nutrient requirement outlined by NRC (1994). By the end of the field trail four birds per treatment were randomly selected, slaughtered and eviscerated for carcass characteristics. The results showed no significant differences in feed intake (g/bird), weight gain (g/bird) and feed conversion ratio among birds fed 0.0, 3 and 6% HWM dietary treatment. Feeding 9% HWM resulted in a significant (P?0.5) lower in feed intake (g/bird), weight gain (g/bird) and poor feed conversion ratio compared to other dietary treatments. Carcass characteristics of bird fed 9% HWM were followed the same trend of the performance parameters. The results also revealed no significant difference in dressing % and drum stick weight between groups fed 0.0, 3 and 6% WHM, Breast and thigh weight were significantly improved by feeding 3 and 6% HWM compared to 0.0 and 9% HWM. Therefore, it can be concluded that HWM can be use as a potential non conventional protein source up to 6% in broiler diet without adverse effects on broiler performance and some carcass characteristics.