Izvorni znanstveni članak
https://doi.org/10.5513/JCEA01/12.1.878
Improvement of environmental quality in intensive pig farming through an integrated bioactivation program for the control and prevention of swine mycoplasmal pneumonia
Vittorio SALA
; University of Milan – Department of Animal Pathology, Hygiene and Veterinary Public Health – Via Celoria 10 – 20133 Milano – Italy
Claudia GUSMARA
Fabio OSTANELLO
Pierlorenzo BRIGNOLI
Sažetak
The decline of pig health status is the effect of a bad air quality inside breeding
facilities related to the concentration of biogases derived from the action of faecal
microbial flora on urine nitrogen. Bioactivation of the environment with bacterialenzymatic
mixtures is able to reduce this chemical emanation.
An experimental trial has been performed to evaluate the efficacy of the bioactivation
treatment to prevent mycoplasmal pneumonia in finishing pigs. Treated and untreated
groups, different treatment schemes and different floors have been compared. The
ammonia concentration was checked by a chemical method. M. hyopneumoniae
infection was evaluated through seroprevalence and by a quantitative lung-scoring
system. For all slaughter-lots average carcass weight was recorded.
The decrease of the environmental ammonia concentration resulted in lower lungscores
and higher carcass weight.
Ključne riječi
environment; mycoplasma; bioactivation; pig; ammonia
Hrčak ID:
70800
URI
Datum izdavanja:
13.7.2011.
Posjeta: 997 *