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http://dx.doi.org/10.5187/JAST.2004.46.1.039

Effect of Continuous Feeding of Probiotics on Growth Performance, Nutrient Digestibility, Blood Urea Nitrogen and Immune Responses in Pigs  

Kil, D.Y. (School of Agricultural Biotechnology, Seoul National University)
Lim, J.S. (School of Agricultural Biotechnology, Seoul National University)
Tian, J.Z. (School of Agricultural Biotechnology, Seoul National University)
Kim, B.G. (School of Agricultural Biotechnology, Seoul National University)
Kim, K.S. (Organic Bio Tech Co. Ltd.)
Kim, Y.Y. (School of Agricultural Biotechnology, Seoul National University)
Publication Information
Journal of Animal Science and Technology / v.46, no.1, 2004 , pp. 39-48 More about this Journal
Abstract
This experiment was conducted to investigate the effect of continuous feeding of probiotics on growth performance, nutrient digestibility, blood urea nitrogen(BUN) and immune responses in pigs. Treatments were 1) Control(basal diet), 2) P-O.l(basal diet + 0.1% probiotics) and 3) P-0.2(basal diet + 0.2% probiotics). In growth trial, a total of sixty pigs(6.17 $\pm$ 0.45 kg average body weight) weaned at 21 days of age were used. All pigs were assigned according to sex and body weight, and each treatment had 5 replicates of 4 pigs per pen in a randomized complete block(RCB) design. During 0${\sim}$8 weeks, there was no significant difference in average daily gain(ADG), average daily feed intake(ADFI) and gain:feed ratio(GfF) among treatments. During 9 - 20 weeks, ADG was improved significantly in pigs fed P-O.I or P-0.2 diets when compared to the pig fed control diet(P <0.05), but there was no significant difference in ADFI and GfF ratio. During overall period, ADG, ADFI and GfF ratio were not significantly different among treatments. In the first metabolic trial(17.93 $\pm$1.45kg average body weight), apparent digestibility of OM, protein, fat in pigs fed P-O.l and P-0.2 diets were greater than in pigs fed control diet(P <0.05) and ash digestibility in pigs fed P-0.2 diet was significantly higher than in pigs fed control diet(P <0.05). Calcium digestibility in pigs fed P-0.2 diet was significantly higher than in pigs fed control and P-O.I diets(P <0.05). Fecal-N excretion was lower in pigs fed P-O.! and P-0.2 diets than in pigs fed control(P <0.05). In the second metabolic trial(41.80 $\pm$ 2.68kg average body weight), there was no significant difference among treatments in apparent digestibility of nutrients and N-retention. In blood assay for the BUN and immune responses investigations, there was no significant difference among treatments during overall period of experiment. Therefore, this experiment suggested that probiotics supplementation could improve growth performance and nutrient digestibility of pigs.
Keywords
Probiotics; Continuous feeding; Growth performance; Nutrient digestibility; Pigs;
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