Viabilitas (Ketahanan) Lactobacillus acidophilus Dalam Pakan Ayam Broiler Untuk Menghambat Penyakit Pullorum

Abstract

The pullorum disease is known by the name of defecating chalk or white defecation (Bacilary white Diarrchae) which causes a lot of losses for breeders, therefore conducted research with the aim to know the resilience (viability) L acidophilus in broiler chicken feed with the aim to inhibit pullorum disease. The research design uses laboratory experimental, quadratic equations and Completely Randomized Design (RAL) 1 factorial with L acidophilus concentration of 10⁶-10⁹. Pre-study observed the best growth curve of L acidophilus, the results showed that at 12 hours, the results of this study were used to inhibit Salmonella pullorum, while the best growth curve of S pullorum that can infect the chickens is at the age of 15 hours. For L acidophilus concentrations which can inhibit S pullorum done in vitro ie at concentration 10⁷, LD₅₀ Salmonella pullorum in vivo broiler on 10⁸. Viability of L acidophilus in feed can survive above 35 days.