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Effects of bacteriophage cocktail supplementation in gestation diet on reproductive performance, blood profile, milk composition, and fecal microflora of sows |
Jinsu Hong1,2 
, Geon Il Lee3
, Jae-Cheol Jang4
, Yoo Yong Kim1,5,*
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1Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute of Agriculture and Life Science, Seoul National University, Seoul 08826, Republic of Korea, Seoul, Korea
2Department of Animal Science, University of Minnesota, Saint Paul, United States
3Department of Agricultural Science, Korean National Open University, Seoul, Korea
4Division of Animal Science, and Institute of Agricultural and Life Science, Gyeongsang National University, Jinju, Korea
5Institute of Green Bio Science and Technology, Seoul National University, Pyeongchang, Korea |
Correspondence:
Yoo Yong Kim, Tel: +82-2-880-4801, Fax: +82-2-878-5839, Email: yooykim@snu.ac.kr
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Received: 15 November 2024 • Revised: 19 December 2024 • Accepted: 1 February 2025 |
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| Abstract |
Objective
The present study aimed to evaluate the effects of bacteriophage cocktail supplementation in gestation sow’s diet on gestating sows and their progeny. Methods: A total of 57 F1 multiparous sows (Yorkshire × Landrace) were allotted to one of three treatment groups in a completely randomized design. The sows were fed corn-soybean meal-based diet supplemented with 0, 0.05, or 0.10% of bacteriophage cocktail during the gestation period and they were fed a common diet during the lactation period. Body weight and bacfact thickness were measured throughout the trial along with blood collection for immunoglobulin analysis. Fecal samples were collected on 4, 6, 8, and 10 weeks of gestation period for fecal microflora. Litter performance and milk composition were investigated on 24 hrs postpartum and d 21 of location. Results: Increasing bacteriophage cocktail supplementation levels in gestation diets linearly increased (P < 0.05) feed intake of lactating sows and alive litter weight, and quadratically increased (P < 0.05) litter weight gain from d 0 to 21 of lactation. Dietary treatment did not affect the serum concentrations of immunoglobulin G and immunoglobulin M in the sows. Increasing dietary bacteriophage cocktail levels in gestation diets linearly increased (P < 0.05) the fat content in colostrum. In fecal microflora of sows, the dietary bacteriophage cocktail significantly increased (P < 0.05) the counts of Lactobacillus for d 63 and 105 of the gestation period and decreased the counts of E. coli (P < 0.05) and Salmonella (P < 0.10) for the late gestation period. Conclusion: Supplementation of bacteriophage cocktail at 0.05% in the diet for gestating sows could improve total litter weight and alive litter weight at birth and litter weight gain during the lactation period through a positive change in fecal microflora with an increase of Lactobacillus and decrease of E. coli, and Salmonella. |
| Keywords:
Bacteriophage; Escherichia coli; Gestating sows; Salmonella; Lactobacillus |
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