Animal Bioscience

Asian Australasian Association of Animal Production Societies (아세아태평양축산학회)
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Effects of dietary deoxynivalenol on growth performance and organ accumulation of growing pigs

  • Received : 2024.03.23
  • Accepted : 2024.05.16
  • Published : 2024.09.01
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Abstract

Objective: The present study aimed to study effects of a chronic feeding of deoxynivalenol (DON) on growth performance, organ weight, organ DON accumulation, and blood parameters in pigs. Methods: Forty-eight castrated male pigs with a body weight of 10.4 kg (standard deviation = 1.7) were assigned to one of 2 diet groups in a randomized complete block design with 6 blocks of pens per diet and 4 pigs per pen. A corn-soybean meal-based control diet was prepared to contain a low DON concentration of 0.28 mg/kg. Corn distillers dried grains with solubles naturally contaminated with DON were used at 30.0% to prepare a contaminated diet with a high DON concentration of 1.8 mg/kg. During the 56-day experimental period, body weight and feed intake were recorded every 14 days. A pig from each pen was euthanized for the collection of organs and muscle every 14 days. Results: Gain:feed in pigs fed the contaminated diet during days 14 to 28 and days 28 to 42 were less (p<0.05) compared with the control group. As increasing feeding period, the DON concentrations in fresh liver increased during days 14 to 28 and then decreased during the subsequent periods in the DON group, whereas the DON concentrations in fresh liver were constant during the experimental period in the control group (quadratic interaction p = 0.049). The DON concentration in the kidneys in the DON group was greater (p = 0.002) than that in the control group regardless of feeding period. On day 56, the granulocyte count in the DON group was less (p = 0.035) than the control group. Conclusion: A chronic feeding of DON for 14 to 42 days decreased gain:feed in pigs, and dietary DON naturally contaminated in corn distillers dried grains with solubles accumulated in the liver during days 14 to 28.

Keywords

Acknowledgement

This work was financially supported by the Rural Development Administration (Republic of Korea; PJ010932).

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