Kajian antibakteri temulawak, jahe dan bawang putih terhadap Salmonella lyphimuriam serta pengaruh bawang putih terhadap performans dan respon imun ayam pedaging

Abstract

This research was condrrcted to investigate the antibacterial activity ofpowder oftemulalvalq ginger and garlic to S.q'phintriunwrngmodified agar well method. heliminary study strowed ttrat garlic porvder had the best antibacterial activity, thereforc it was fwtlrriest€d in a feeding tial to e\.aluare the efect on grrowth perfomrmce and immrme rcsponse in broiler chicken challenged tvith S. typhimtium(SQ. Experimenal rcahents were ananged in Completely Randornized Design with fourfieatnent andthree replications (Negative contol, positive contol, garlic powder and tetracycline). Seventy-two Day-Old-Chickens with body weight 46,7 g strain "Hubbard Wonokoyo" were used in a 28 days experiment. Broiler chickens were fed garlic powder and tetracycline diets for l0 days and then challenged orally with ST 4,1 x l0rr cfu. Body weight, feed intake and salmonella colony in faeces were monitored. Blood serum was collected at l8d after infection. Results indicated that there was no significant effect ofgarlic powder on body weight and feed intake, but feed intake tended to decr€ase. However, H conversion ratio of ration with gar{ic pouderwas beter tlranrdiots with tetracyclhe and other teatnenb. Salmon€lla population in faeces also decreased with addition of grlic powder in diets- Total protein serum uas innrrncea Uydisease 6[1alenggd" S€runirnmnoglotulin(grnrna$ohlin)wasnotinfluerrced by disease challenged, but addition garlic powder in diet tended to increase gamma-globulin concentration. It can be concluded that garlic powder has antibacterial activity to S.typhimuriwr. Furthermore, this result indicated that some beneficial effect ofdietary garlic powder at 2,5% supplementation on growth performance and no effect on immune response in the presence of ST-challenge.