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Asian-Australas J Anim Sci > Accepted Articles
DOI: https://doi.org/10.5713/ajas.19.0473    [Accepted] Published online November 12, 2019.
Effects of dietary probiotic blend and liquid feed program at different nutrition concentrations on the growth performance, nutrient digestibility and fecal score of weaning piglets
Song Zhang1,2,*  , Dong Huy Yoo1, Xiang Ao1, In Ho Kim1,*
1Department of Animal Resource & Science, Dankook University, Cheonan, Choongnam, 330-714, Korea
2Kemin Industries (China)Co., Ltd. 25 Qinshi Road, Sanzao,Zhuhai, 519040, China
Correspondence:  Song Zhang, Tel: +82–41–550–3652, Fax: +82–41–565–2949, Email: messenger_zs@hotmail.com
In Ho Kim,Email: inhokim@dankook.ac.kr
Received: 8 June 2019   • Revised: 27 August 2019   • Accepted: 30 October 2019
This study was carried out to investigate the effects of dietary probiotic blend and liquid feed program at different nutritional densities on growth performance, nutrient digestibility, fecal score of weaning piglets.
A total of 120 weaning pigs with an initial BW of 7.05 ± 0.93 kg per pig (21 days of age) were randomly allocated into 1 of the following 8 dietary treatments (3 replicates per treatment with 5 pigs per replicate) in a 2×2×2 factorial arrangement with 2 levels of nutrition density (AME=14.63 kJ/kg or 3500 kcal/kg, CP=20% VS AME=14.23 kJ/kg or 3400 kcal/kg, CP=19.42%), 2 types of feed (dry VS wet) and 2 levels of probiotics (0 mg/kg VS 300 mg/kg). There were 8 experimental diets: TRT1, high nutrition × dry type without probiotics; TRT2, high nutrition × dry type with probiotics; TRT3, high nutrition × wet type without probiotics; TRT4, high nutrition × wet type with probiotics; TRT5, low nutrition × dry type without probiotics; TRT6, low nutrition × dry type with probiotics; TRT7, low nutrition × wet type without probiotics; TRT8, low nutrition × wet type with probiotics. This research was divided into three periods: Phase 1: 0-5days; Phase 2: 5-15days; Phase 3: 15-25 days. All the response criteria were measured at the end of each phase.
In the phase 2, ADG and ADFI were greater (P<0.05) in probiotics treatments comparing to non-probiotics treatments. In the phase 3, G:F ratio (P<0.05) were all significantly improved in probiotics, wet feed and high nutrition diet. Besides, pigs fed high nutrition diet appeared to have a greater ADG and G:F than those fed low nutrition diet (P<0.05). Moreover, some interactive effects between nutrition levels and feed types and between nutrition levels and probiotics were found in G:F ratio. Interestingly, there was a significant positive interaction among probiotics × feed type × nutrition density (P<0.05). Piglets fed the diet containing probiotics had increasing ADG, ADFI and G:F ratio comparing to those receiving the diet without probiotics (P<0.05). Besides, ADG and ADFI (P<0.05) were significantly raised in high nutrition diet. An obvious reduction on fecal score was observed in probiotics treatment form d0 to d5 (P<0.05). There was also an interactive effect on fecal score between feed types and nutrition concentrations from d5 to d25 (P<0.05). No difference was found in digestibility of dry matter, nitrogen and energy (P>0.05). Conclusion: These results indicated that probiotics in a supplementation diet could benefit growth performance (ADG, ADFI and G:F) and reduce the frequency of watery feces. Besides, wet feed program (feed : water=1:1.25) could improve the G:F. Because there were two positive interactions: one between liquid program and nutrition density, the other between supplementation probiotics and nutrition density, the effect of liquid feed or probiotic could be influenced by dietary nutrition density in weaned piglets. An increased value of G: F was obtained when wet feeding a high nutrition diet (100 kcal higher than NRC 2012 recommendations) was supplemented with probiotics for 15 to 25 days.
Keywords: Dietary Probiotic Blend; liquid feeding program; Nutrition Levels; Growth Performance; Fecal Score; Weaning Pigs

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