Effects of antibacterial peptides in non-antibiotic feeds on the productivity of growing pigs
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Abstract
The objective of this study was to evaluate growth performance of finishing pigs fed diets with two antibiotics or fed with organic originated supplements. A total of 48 crossbred weaned piglets were randomly assigned into four treatments and the study was conducted in 108 days. Each treatment had 06 replicates and 2 piglets (1 male and 1 female) per replicate. Those organic originated supplements included phytogenic extracts, organic acid, probiotics or new preparation of anti-bacterial peptides (trade name Halor Tid). The treatment I: pigs were only fed basal diet without antibiotics supplements or other organics feed additives (Negative control). Treatment II: pigs were fed with two antibiotics including colistin 1% and BMD 10% in order to prevent E. coli and Clostridium perfringens infection (Positive control). Pigs in treatment III were fed with a combination of phytogenic extracts, organic acid and probiotics whereas pigs in treatment IV were fed with a combination of phytogenic extracts, organic acid and anti-bacterial peptides. The results showed that the performance parameters such as body weight gain, feed conversion ratio (FCR) and issues of diarrhea and mortality were the worst in the treatment I; whereas these performance parameters in the treatment III or in treatment IV were better than those in treatment II although this difference was not statistically significant at P > 0.05. Besides, the feed cost per kg of live weight of pigs in treatment III and treatment IV was significantly lower than that in treatment I and II.
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