Open Access Journal of Agricultural Research (OAJAR)

ISSN: 2474-8846

Research Article

Optimization of 4-Bac Extra Probiotics Dosage for Enhanced Productivity in Broiler Chickens Using a Quadratic Polynomial Response Model

Authors: Ari MM*, Baba MK and Edward PJ

DOI: 10.23880/oajar-16000344


This study aimed to determine the optimal dosage of 4-Bac Extra probiotics supplementation for broiler chickens using performance traits and a quadratic polynomial response model. A total of 180 Arbor Acre broiler chickens were randomly assigned to three treatment groups, replicated three times, representing 0% (T1), 0.25% (T2), and 0.50% (T3) probiotics supplementation. The birds were raised in a deep litter system and provided with ad libitum access to feed and water. During the starter phase, the 0.25% probiotics treatment group exhibited significantly higher feed intake and improved feed conversion ratio compared to the 0% and 0.50% groups. Additionally, the broilers in the 0.25% group showed significantly higher final body weight. However, the cost per kilogram of weight gain and cost of production were significantly higher in the 0.50% group compared to the 0% and 0.25% groups. Quadratic regression analysis revealed significant relationships between feed intake and probiotics dosage, as well as the week of production. The optimal feed intake, probiotics dosage, and week of production were determined to be 260g/week, 0.024g/day, and 7 weeks, respectively. In conclusion, the optimum dosage of 4-Bac Extra probiotics supplementation for broiler chickens is 0.024g per day for optimal performance characteristics. This study provides valuable insights into improving broiler chicken productivity and cost efficiency through optimized probiotics supplementation.

Keywords: Broilers; 4-Bac Extra; Probiotics; Quadratic Model; Supplementation

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