HomePhilippine Journal of Veterinary and Animal Sciencesvol. 33 no. 2 (2007)

Abatement of Ammonia Emission by Inclusion of Probiotic in Pig Grower Diet

Antonio J. Barroga | Rocelyn M. Barroga | S.m. Barroga | G.p.l. Abella

Discipline: Veterinary Medicine, Animal Science



This experiment was conducted to determine the effect of dietary probiotic inclusion on growth performance, feed profit and removal efficiency of fecal ammonia. The probiotic was incorporated in the diet at 0.1 %. The correlation of temperature to ammonia emission was also investigated. Results showed no significant difference in daily feed intake, daily weight gain, feed conversion efficiency and feed cost per kilogram weight gain. However, the fecal ammonia tended to decrease by 33.5 % in the pro biotic fed pigs. The large-scale impact (1 million pigs from 46 to 64 kg on a 30-day feeding period) to the environment based on the reduction rate that was quantified in this study was equivalent to 3,112 kg of ammonia gas being prevented to escape to the atmosphere on a daily basis. Ammonia and temperature were not correlated, suggesting that there were other factors that could contribute to ammonia emission. A very weak negative correlation was established between ammonia and temperature on the control diet and probiotic treated pigs with -0.080 and -0.520, respectively. The significantly lower initial weight of the probiotic fed pigs during the start of the study resulted to final weight comparable with the control after a 30-day feeding trial. The minimal difference in net income of PhP98.00 and return on investment of 0.46% suggested that the probiotic fed pigs still had better economic performance because of their substantial abatement in ammonia emission resulting to better health of both humans and pigs.