The impact of avian IgY antibodies and probiotics supplementation via drinking water on growth and laying performance of 16-week-old layer pullets

Antibiotics raise an issue concerning the development of antibiotic resistance some pathogenic bacteria. The use probiotics and Avian IgY in layer pullet farming is a better way protecting against bacteria increasing production performance. Supplementation antibodies probiotics(Lactobacillus acidophilus, Streptococcus faecium, Bifido bacterium longghum, Bacillus thermophilum) were conducted on 5,724 healthy pullets to determine its effect their growth laying supplement was powder form with dosage 100 mg per liter water for 6 hours. supplementation evaluated by measuring parameters performance pullets; there 3 treatment groups, control group, Treatment 2 which received 5 days initial first week then twice every 9 weeks weeks. Results showed that had significant effects age when 50% total population laid eggs, average number eggs produced, % Hen day production, house weight feed conversion efficiency. It also economical yielded higher profit. On other hand, no body mortality count pullets. soluble via drinking week; has greatest increase profitability layers.Keywords: antibodies, Growth performance, Laying Layer pullets, Probiotics