Go to Top Go to Bottom
Anim Biosci > Accepted Articles
https://doi.org/10.5713/ab.21.0369    [Accepted] Published online October 29, 2021.
Effects of Yarrowia lipolytica supplementation on growth performance, intestinal health and apparent ileal digestibility of diets fed to nursery pigs
Yi-Chi Cheng1  , Marcos Elias Duarte1  , Sung Woo Kim1,* 
Department of Animal Science, North Carolina State University, Raleigh, NC 27695, USA
Correspondence:  Sung Woo Kim, Tel: +1-9195131494, Fax: +1-919-515-6884, Email: sungwoo_kim@ncsu.edu
Received: 18 August 2021   • Revised: 3 September 2021   • Accepted: 23 September 2021
Abstract
Objective
The objective was to evaluate the efficacy of increasing supplementation of Yarrowia lipolytica (YL) up to 3.0% replacing 1.6% poultry fat and 0.9% blood plasma for growth performance, intestinal health and nutrient digestibility of diets fed to nursery pigs.
Methods
Twenty-four pigs weaned at 24 d of age (initial body weight at 7.2 ± 0.6 kg) were allotted to three dietary treatments (n = 8) based on the randomized complete block. The diets with supplementation of YL (0.0, 1.5 and 3.0%, replacing poultry fat and blood plasma up to 1.6 and 0.9%, respectively) were fed for 21 d. Feed intake and body weight were recorded at d 0, 10 and 21. Fecal score was recorded at every odd day from d 3 to 19. Pigs were euthanized on d 21 to collect proximal and distal jejunal mucosa to measure intestinal health markers including tumor necrosis factor-alpha, interleukin-8, immunoglobulin A and immunoglobulin G. Ileal digesta was collected for AID of nutrients in diets. Data were analyzed using Proc Mixed of SAS.
Results
Supplementation of YL (1.5 and 3.0%) replacing poultry fat and blood plasma did not affect growth performance, fecal score and intestinal health. Supplementation of YL at 1.5% did not affect nutrient digestibility, whereas supplementation of YL at 3.0% reduced AID of dry matter (40.2 to 55.0%), gross energy (44.0 to 57.5%), crude protein (52.1 to 66.1%) and ether extract (50.8 to 66.9%) compared to diets without supplementation.

Conclusion

Yarrowia lipolytica can be supplemented at 1.5% in nursery diet, replacing 0.8% poultry fat and 0.45% blood plasma without affecting growth performance, intestinal health and nutrient digestibility. Supplementation of YL at 3.0% replacing 1.6% poultry fat and 0.9% blood plasma did not affect growth performance and intestinal health, whereas nutrient digestibility was reduced.
Keywords: Apparent Ileal Digestibility; Growth Performance; Intestinal Health; Nursery Pigs; Yarrowia lipolytica; Yeast


Editorial Office
Asian-Australasian Association of Animal Production Societies(AAAP)
Room 708 Sammo Sporex, 23, Sillim-ro 59-gil, Gwanak-gu, Seoul 08776, Korea   
TEL : +82-2-888-6558    FAX : +82-2-888-6559   
E-mail : animbiosci@gmail.com               

Copyright © 2021 by Animal Bioscience.

Developed in M2PI

Close layer
prev next