This experiment was carried out to investigate the effects of feeding antibiotic, enzymes, yeast culture and probiotics on the growth performance, nutrient digestibility and antibiotics residue in Israeli carp. A total of 253 Israeli carp weighing abo...
This experiment was carried out to investigate the effects of feeding antibiotic, enzymes, yeast culture and probiotics on the growth performance, nutrient digestibility and antibiotics residue in Israeli carp. A total of 253 Israeli carp weighing about 300 g/fish were allotted to 6 groups; control, Oxytetracycline (OTC), Nosiheptide (NH), enzyme, yeast culture and probiotics. Each group had 3 replications consisting of 14 fishes. Feeding trial were performed for five weeks. A metabolic vial was carried out by indirect methods using diets with Cr₂O₂. Tire residue of antibacterials agent in muscle was evaluated. The results obtained are as Follows:
1. Supplementation with NH, yeast culture and probiotics showed 16.5, 10.8, and 23.7% improvement in teed efficiency, respectively (p$lt;0.05).
2. NH, yeast culture and probiotics increased protein availabilities by 2.4, 1.3 and 2.0%, respectively, while NH and probiotics increased NFE digestibilities by 13.9 and 16.8% compared to the control, respectively (p$lt;0.05). There was no significant (p$gt;0.05) differences in amino acid digestibility among treatments.
3. OTC residue in muscle was less than the detectable limit (0.5 ppm).