  The objective of this study was to determine the effect of feeding an
antimicrobial association to males broiler chickens from 0 to 14 days of age on
the performance and clinical signs of bacterial processes. Two treatments were
tested: a control treatment without Respirend-M, and a treatment with the
antimicrobial (300 g/t Respirend-M, 0-14 d). 398 male Cobb 500 chicks were
randomly assigned to two treatments and four replications per treatment. Body
weight at 14 d, body weight gain, feed intake, feed conversion ratio, and
health status were evaluated. The results showed feeding 300 g/t Respirend-M
significantly (P<0.05) improved the final body weight, the body weight gain and
the feed intake. No statistically significant (P>0.05) effect was detected on
the feed conversion ratio.
