[The effect of combined antibiotic and immune prophylaxis against atrophic rhinitis on the body weight of swine].

In a natural outbreak of Atrophic Rhinitis, the weaned piglets were divided into four groups. Group 1 (10 weaned piglets); Their mother was vaccinated with 2 ml Rhinipig i. m. 3 weeks prior to farrowing. The piglets received 0.2 ml each of Pargenta 50 (= 10 mg Gentamycin) k. m. on the third, fifth and seventh days after birth. The piglets were fed a food containing 10 ppm Gentamycin base during the 6 weeks following their weaning. Group 2 (10 weaned piglets); Their mother was vaccinated with 2 ml Rhinipig i. m. 3 weeks prior to farrowing. The piglets received 0.2 ml each of Pargenta 50 (= 10 mg Gentamycin) i. m. on the third, fifth and seventh days after birth. Group 3 (10 weaned piglets); Their mother was vaccinated with 2 ml Rhinipig i. m. 3 weeks prior to farrowing. Group 4 (10 weaned piglets, untreated, experimental control group). The results were during the growing period (from 12.3 kg to 32-34.9 kg) and during the finishing period (from 32-34.9 kg to 100 kg) evaluated. Group 1 showed significantly better food conversion and daily weight gain in both periods when compared to the other groups. Although the difference of daily weight gain between Group 1 and Groups 2 and 3 where diminished by 4.34% respectively 1.72%.