The Productivity of broiler chicken fed organic zinc supplemented diet (Ozinc)

Abstract

The study was conducted to investigate the effect of different levels of organic zinc extract on the productivity, carcass yield traits, relative weight of visceral organs, water consumption, viability, leg health, bone quality and profitability of broiler chicken. Day-old broiler chicks (Lohman Broiler, n=112) of either sex were distributed randomly into four treatments including T1 (Control), T2 (Ozinc0.05%), T3 (Ozinc0.1%), and T4 (Ozinc 0.15%) in a completely randomized design (CRD). Each treatment was replicated four times with 7 birds per replicate. Chicks were reared in the battery cages of equal size entire the trial period from dl-d28. Ready-made starter diet (crumble-pellet) was given to the chicks up to d14, after that grower diet was fed to the birds for the rest of the trial period. Chicks had a free access to water treated with organic zinc (Ozinc) at the rate of T1 (0ml/L), T2 (0.5ml/L), T3 (1ml/L) and T4 (1.5ml/L), and this treated water supplied to the birds ad-libitum throughout the trial period. Bird was reared under uniform feeding, rearing, lighting and standard management condition throughout the trial period. Data on feed intake (FI), live weight (LW), live weight gain (LWG), feed conversion ratio (FCR) and livability were recorded. Besides, carcass yield traits, relative weights of gastro-intestinal organs, water intake (WI) and cost benefit analyses were also measured on d28.The data revealed that FI and viability % of broiler were unaffected (P>0.05)between treatments. Significantly (P<0.05) higher LW was found in the T3 group during 21 days. Only except for others the LW and LWG of broiler fed organic zinc (T3) tend to be significant (P<0.08) on day 28. The highest LW (1841.70g/b) was observed in T3diet and the lowest LW (1741.0 g/b) found in T1 diet during d1-28 days. The visceral organ weights (proventriculus, gizzard, liver, heart) were unaffected (P>0.05) between treatments. The results of meat yield traits revealed that dressing %, thigh weight, breast weight, wing weight, back weight, shank weight, head weight, drumstick weight and neck weight percentages etc., were found similar (P>0.05) between treatments. The WI of broiler differed significantly (P<0.05) between treatments on d28. The highest WI was found in T1 and T4 group and the lowest WI was seen in the T2 and T3treatment group, respectively, during 28 days. Data on latency to sit (LTS), foot pad dermatitis (FPD), gait scoring (GS) tests, bone characters (length, weight, diameter, head width) and bone minerals (Ca, P) etc, were found identical (P>0.05) between treatment, and these were measured to assess leg the bone quality of broiler on day 25. Higher profit margin (P<0.05) and lower production cost were observed in the birds fed T3 diet group than that of other diet groups. It can be concluded that Ozinc @ 1ml/L of water was found to be more potential for the growth performance and economic for the broiler chickens production under farming condition.