Effect Of Probiotic On The Ammonia And The Immune System Of Broilers

The malodor arising from the animal farms comprises a large proportion of environmental pollution complaints for the industry. Swine and poultry houses are the main sources of such odors. Ammonia play an important role in malodor of chicken house. Ammonia is produced inside the buildings by direct emission from the digestive system of the animals or from the decomposition of the animal wastes. Numerous laboratories and field studies have shown how ammonia affects birds'health and performance. Ammonia is biosynthesised through normal amino acid metabolism and is toxic in high concentrations. The symptoms of irritation by ammonia in birds include: ocular damage, sensitivity to light, ulcers in connecting tissue, pulmonary congestion, edema, hemorrhage, a decrease in food consumption, ascitis. In very high levels ammonia damage causes death.Suppressing ammonia production can be beneficial for improving animal health and enhancing growth because ammonia produced in the intestinal mucosa can exert significant damage to the surface of cell. There are many types of probiotic which reported could suppress ammonia production.This experiment was conducted to study the effects of a new probiotic named PRO-JY on ammonia production, ammonia, uric acid, total protein, albumin and globulin in serum and immune system of broilers. The experiment was divided into three steps. First, PRO-JY was feeded to broiler to proof wether it can Suppress ammonia production. Second, PRO-JY was feeded at different age. Third, PRO-JY were feeded at different concentration.The results showed that 1) There was significant effect of probiotic on ammonia emission by 0.6% daily gain in water (P<0.05); 2)Total protein and the globulin content in serum were significantly increased by this probiotic (P<0.05); 3) Adding this probiotic to water by 0.3% could increase the level of antibody after the immune (P<0.05). These results indicated that probiotic could decrease the ammonia concentration in poultry house and improve total protein and the globulin content in serum. It could also enhance the humoral immunity of broilers. But there was no significant effect on cellular immunity.