EFFECT OF Lactobacillus Sp AS PROBIOTIC SUPPLEMENTATION IN DIET ON THE PERFORMANCE OF 62 — 69 WEEKS LAYING HENS

Abstract

The objective of this experiment is to find out the effect of Lactobacillus sp. as
probiotic supplementation in diet on laying performances. One hundred 62-69 weeks-old layers strain Isa Brown were randomly allotted to five diets : a basal diet (P0) ; a basal diet + 0,l% probiotic (Lactobacillus sp.) (P 1), a basal diet + 0,2% probiotic (Lactobacillus sp.) (P2), a basal diet + 0,3”/o probiotic (Lactobacillus sp) (P3) and a basal diet + 0,4% probiotic (Lactobacillus sp.) (P4). The trial was conducted for 8 weeks. The variables observed were diet intake (g/bird/day), hen day production (%), egg weight (g), egg mass (g/bird/day), and diet conversion. Data of those variables were subjected to analyze of covariance with Completely Randomized Design. The protein digestibility and metabolizable energy couse
also observed. The results of this research showed that supplementation of Lactobacillus sp. as probiotic was not significantly (P>0,05) improved laying perfonnances, protein digestibility, and metabolizable energy but most variable give significantly (P<0,05 and P<0,01) influences on the data at initial age to the next age on laying performances except diet intake (g/bird/day). Although there were no biological improved on laying performances but supplementation using this probiotic give more profit from Pi at about Rp.326,S3/kg/day egg that could produce.