Journal
ANNALS OF ANIMAL SCIENCE
Volume 21, Issue 4, Pages 1475-1489Publisher
WALTER DE GRUYTER GMBH
DOI: 10.2478/aoas-2020-0119
Keywords
pig; boar taint; nutrition; Helianthus tuberosus; RT-qPCR
Categories
Funding
- Ministry of Education, Youth and Sports of the Czech Republic [MSM 6046070901]
- project INTER-COST [LTC17]
- U Framework Programme for Research and Innovation Horizon 2020 (COST action IPEMA) [CA15215]
- NAZV [QK 1910400, QK 1910217]
- Institute of Animal Physiology and Genetics CAS, v.v. Libechov [RVO 67985904]
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This study investigated the effects of diets with different levels of dried Jerusalem artichoke on skatole levels and CYP2E1 mRNA expression in commercial crossbred pigs. The results showed that supplementation with Jerusalem artichoke led to lower skatole levels and higher CYP2E1 mRNA expression, suggesting a potential option to reduce skatole levels in adipose tissue of entire male pigs effectively.
The objective of this study was to investigate the effect of diets containing different levels of dried tuber of Jerusalem artichoke, Helianthus tuberosus, on skatole levels in backfat and on the CYP2E1 mRNA expression in the liver of commercial crossbred pigs. A total of 23 uncastrated male pigs from 10 litters of a commercial crossbred population of Large White x (Landrace x Large White), were used in this study. Boars were randomly divided into four different dietary treatment groups - a control group (K1; 5 boars; without supplementation of Jerusalem artichoke) and three experimental groups (6 boars each) that were fed with the diet containing different levels of dried Jerusalem artichoke (K2 - 4.1%; K3 - 8.2%; K4 - 12.2%) for 14 days before slaughter. Significant effects of diet on skatole levels were observed between the control group and the experimental groups (P = 0.0078). The lowest level of skatole was in the K3 group with 8.2% of Jerusalem artichoke. As for CYP2E1, a negative correlation was observed between the levels of skatole and CYP2E1 mRNA expression. Significant effect (P = 0.0055) was found in all experimental groups compared to the K1 group, and most pronounced in the K2 and K3 groups. The supplementation with Jerusalem artichoke resulted in lower level of skatole and higher CYP2E1 mRNA expression. The results suggest that affecting the expression of CYP2E1 by feed supplements could be an option to effectively reduce the levels of skatole in adipose tissue of entire male pigs.
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