Pengaruh kepadatan kandang dan pembatasan ransum terhadap performans produksi dan tingkat cekaman pada Ayam Broiler

Abstract

This study aims to determine the interaction between cage density with dietary restrictions on ration consumption, growth, feed conversion, carcass percentage, abdominal fat, heterophile-lymphocyte ratio and broiler chicken's Income Over Feed Cost. The research lasted for 2 months in the Cage of Broiler Chicken Farm SMK Negeri I Nabire. The research material used was 135 DOC unsex Cobb strain (CP 707) with an average weight of 42.5 grams / head; commercial feed starter BR1 CP 511 B and finisher BR2 CP 512 B and 27 units of battery cages. The experimental design used was a completely randomized design factorial pattern (3 x 3). Factor I is enclosure density with 3 levels, namely K1 (3 animals / 0.5 m2), K2 (5 animals / 0.5 m2) and K3 (7 animals / 0.5 m2) and Factor II is restriction on ration with 3 levels namely R1 (100% according to ad libitum requirements), R2 (85%) and R3 (70%) given at 4-5 weeks of age. Each treatment combination was repeated 3 times to obtain 27 experimental unit units. The results showed there was no interaction between cage density factors with dietary limitation factors for all observational variables. But the cage density factor, significantly (P <0.05) shows that the denser the cage the lower the consumption of rations and the percentage of abdominal fat in broilers. Whereas the restriction factor of the ration, significantly (P <0.05) indicates that the higher the percentage of restriction ration the lower the ration consumed and the higher Income Over Feed Cost (the greater the business income of broiler chickens obtained) despite the indication of stress in broilers with a high average heterophyll-lymphocyte (H / L) ratio of 2.44.