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Asian-Australas J Anim Sci > Volume 19(1); 2006 > Article
Swine Nutrition and Feed Technology
Asian-Australasian Journal of Animal Sciences 2006;19(1): 80-85.
DOI: https://doi.org/10.5713/ajas.2006.80    Published online December 6, 2005.
Effects of Essential Oils Supplementation on Growth Performance, IgG Concentration and Fecal Noxious Gas Concentration of Weaned Pigs
J. H. Cho, Y. J. Chen, B. J. Min, H. J. Kim, O. S. Kwon, K. S. Shon, I. H. Kim, S. J. Kim, A. Asamer
Abstract
Ninety six crossbred pigs (Landrace횞Yorkshire횞Duroc) were used to determine the effects of essential oils (Fresta F Conc짰) supplementation on growth performance, immune response and fecal noxious gas of weaned pigs. Treatments were 1) NC (negative control; basal diet without antibiotics), 2) PC [positive control; basal diet+CSP (CTC+Sulfathiazole+Penicillin) 0.1%], 3) NCF (basal diet+Fresta F Conc짰 0.03%) and 4) PCF [basal diet+CSP (CTC+Sulfathiazole+Penicillin) 0.1%+Fresta F Conc짰 0.02%]. From d 0 to 14, ADFI was increased in pigs fed PCF diet (p<0.05). From d 14 to 28, pigs fed PCF diet had greater ADG and ADFI than pigs fed NC diet (p<0.05). From d 28 to 49, ADG and ADFI in pigs fed PCF diet were higher than in pigs fed NC diet (p<0.05). Through the entire experimental period, ADG and ADFI in pigs fed PCF diet were the highest compared to pigs fed NC and PC diets (p<0.05). There was no significant difference in fecal consistency score among the treatments (p>0.05). No statistical differences (p>0.05) were found in red blood cells (RBC) counts, white blood cells (WBC) counts, lymphocyte counts, total protein and albumin. Serum IgG concentration of PCF treatment was greater than that of other treatments (p<0.05). From d 0 to 14, there was no significant difference in digestibility of dry matter and nitrogen among the treatments (p>0.05). From d 14 to 28, digestibility of dry matter in pigs fed PC, NCF and PCF diets was higher than that of pigs fed NC diet (p<0.05) and treatments with added essential oils were higher than other diets ondigestibility of nitrogen (p<0.05). Also, from d 28 to 49, digestibility of nitrogen in pigs fed PCF diet as the highest among others (p<0.05). On d 14 and 28, no statistical differences (p>0.05) were found in volatile fatty acid (VFA), ammonia nitrogen (NH3-N) and hydrogen sulfide (H2S) concentrations among treatments. On d 49, there was no significant difference in VFA concentration among the treatments (p>0.05). NH3-N concentration in pigs fed PCF diet was lower than in pigs fed other diets (p<0.05). H2S concentration in pigs fed diets with added essential oils was lower than others. In conclusion, the results suggest that the dietary addition of essential oils and antibiotics into diets for weanling pigs improved growth performance, IgG concentration and nitrogen digestibility and decreased noxious gas concentration. Essential oils can be used to partly replace antibiotics in diets for weaned pigs without negative affects on growth performance.
Keywords: Essential Oil; Growth Performance; Blood Profile; Fecal Noxious Gas Concentration; Weaned Pigs


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