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Fatty acid-balanced oil improved nutrient digestibility, altered milk composition in lactating sows and fecal microbial composition in piglets |
Yu Zhang1 
, Shuyu Peng1
, Shuang Dong1
, Jihua Wang2
, Yu Cao2
, Yongxi Ma1,*
, Chunlin Wang1,*
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1State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
2CALID BIOTECH (WUHAN) CO., LTD, Wuhan 430073, China |
Correspondence:
Yongxi Ma, Tel: +86‐10‐6273‐3588, Fax: +86‐10‐6273‐3588, Email: mayongxi2005@163.com
Chunlin Wang, Tel: +86-139-1091-6445, Fax: +86‐10‐6273‐3688, Email: wangchl@cau.edu.cn
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Received: 12 September 2023 • Revised: 15 November 2023 • Accepted: 13 January 2024 |
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| Abstract |
Objective
This study aimed to investigate the effects of dietary supplementation of a fatty acid-balanced oil, instead of soybean oil, on reproductive performance, nutrient digestibility, blood indexes, milk composition in lactating sows, and fecal microbial composition in piglets.
Methods
Twenty-four sows (Landrace×Yorkshire, mean parity 4.96) were randomly allotted to two treatments with twelve pens per treatment and one sow per pen based on their backfat thickness and parity. The experiment began on day 107 of gestation and continued until weaning on day 21 of lactation, lasting for 28 days. The control group (CG) was fed a basal diet supplemented with 2% soybean oil and the experimental group (EG) was fed the basal diet supplemented with 2% fatty acid-balanced oil.
Results
The fatty acid-balanced oil supplementation increased (p<0.05) the apparent total tract digestibility of dry matter, crude protein, and gross energy in sows. The lower (p<0.05) serum high-density lipoprotein cholesterol and albumin levels of sows were observed in the EG on day 21 of lactation. Dietary supplementation with the fatty acid-balanced oil decreased the fat content, increased the immunoglobulin G level, and changed (p<0.05) some fatty acid content in milk. Moreover, the fatty acid-balanced oil supplementation changed (p<0.05) the fecal microbial composition of piglets, where the average relative abundance of Spirochaetota was decreased (p<0.05) by 0.55% at the phylum level, and the average relative abundance of some potentially pathogenic fecal microorganism was decreased (p<0.05) at the species level.
Conclusion
The fatty acid-balanced oil improved nutrient digestibility, changed the serum biochemical indices and milk composition of sows, and ameliorated the fecal microbial composition of piglets. |
| Keywords:
Fatty Acid; Lactating Sows; Microbiota; Milk Composition; Nutrient Digestibility; Serum Indexes |
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