Potensi Pemberian Probiotik Bifidobacterium sp., Lactococcus lactis, dan Lactobacillus sp. Terhadap Performa Produksi Ayam Petelur

The aim of this study was to determine the effect of probiotics Bifidobacterium sp., Lactococcus lactis, and Lactobacillus sp. on feed efficiency and egg mass on Isa Brown layer. This study used 36 of 30 weeks-old laying hens Isa Brown strain. The concentration of probiotics Bifidobacterium sp., L. lactis, and Lactobacillus sp. was 1.2x10⁹ CFU/ml. There were three kinds of treatments, i.e. P0 (none treatment), P1 (given 1 ml of probiotics per liter of drinking water), and P2 (given 2 ml of probiotics per liter of drinking water). The results showed that the egg mass value of P2 was significantly different (p<0.05) with P1 and P0, but P1 was not significantly different (p>0.05) with P0. Meanwhile for the feed efficiency, it showed that probiotics could give significant difference (p<0.05) between all treatments, both P0 and P1, even P2. The P2 treatment showed the highest value of feed efficiency (73.88 ± 4.06), while the lowest value of feed efficiency was the P0. It can be concluded that probiotics Bifidobacterium sp., L. lactis, and Lactobacillus sp. dose of 1 ml per liter of drinking water and 2 ml per liter of drinking water could increase feed efficiency but not for the egg mass on Isa Brown layer.