Investigations on the effect of feed additives on the gut microflora of meat rabbits

The gut microflora of healthy rabbits consists mainly of gram-positive bacteria (bacilli, lactobacilli). Disturbance of the ecological balance, particularly the establishment of E. coli or CE. perfringens can cause severe damage in the gut. "Katarrhalic enteritis" or "Haemorrhagic typhlo-colitis" which often occur in young rabbits were the result. The effect of feed additives on the gut nora of growing meat rabbits was investigated. Flavophospholipol, Polymycin B, Robenedin, Lerbek(R), Olaquindox, Enrofloxacine, Chlortetracycline and Aureo-S-700(R) (Chlortetracycline/Sulfadimidine) showed no effect. Antibiotics react in a different manner when given orally. Penicillin V, Ampicillin, Cephalexin, Lincomycine and Spiramycine induced disorder of intestinal nora balance, followed by diarrhoea. Tetracycline, Doxycycline, Chloramphenicol, Erythromycine, Spectinomycine, Oleadomycine and Tylosine do not influenced the composition of the gut microflora.