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Calta J, Zadinová K, Čítek J, Kluzáková E, Okrouhlá M, Stupka R, Tichý L, Machová K, Stratil A, Vostrý L. Possible effects of the MC4R Asp298Asn polymorphism on pig production traits under ad libitum versus restricted feeding. J Anim Breed Genet 2023; 140:207-215. [PMID: 36583444 DOI: 10.1111/jbg.12751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 12/08/2022] [Indexed: 12/31/2022]
Abstract
The missense mutation Asp298Asn in the melanocortin 4 receptor (MC4R) is associated with daily gain or fatness in pigs (Sus scrofa domesticus). However, to the best of our knowledge, no study has directly compared the effects of the polymorphism between different feeding levels, even though diet plays a vital role in the swine industry. To explore possible differences, data from 439 mostly commercial hybrids fattened ad libitum and 119 commercial hybrids fattened with restricted feed ration were collected. The recorded traits were average daily gain (ADG), feed conversion ratio (FCR), carcass weight (CW), dressing percentage (DP), lean meat content (LM), backfat thickness (BFT), lean cuts weight, and meat quality parameters such as pH, temperature, drip loss, and CIELAB colour space. The general linear model revealed that the overall effect of MC4R was not statistically significant, but significant differences (p < 0.05) were found in ADG, FCR, CW, DP, LM, and BFT. In the ad libitum category, the AA genotype (298Asn/298Asn) tended to be the most favourable for growth-related traits, with the lowest LM, which is consistent with previous findings. In the restricted category, on the other hand, GA heterozygotes (298Asp/298Asn) achieved the best performance in terms of growth, whereas AA homozygotes showed the worst performance. Therefore, these results raise the possibility of an interaction between MC4R and the feeding level.
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Affiliation(s)
- Jan Calta
- Department of Genetics and Breeding, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic
| | - Kateřina Zadinová
- Department of Animal Science, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic
| | - Jaroslav Čítek
- Department of Animal Science, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic
| | - Eva Kluzáková
- Department of Animal Science, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic
| | - Monika Okrouhlá
- Department of Animal Science, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic
| | - Roman Stupka
- Department of Animal Science, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic
| | - Ladislav Tichý
- Department of Genetics and Breeding, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic
| | - Karolína Machová
- Department of Genetics and Breeding, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic
| | - Antonín Stratil
- Department of Genetics and Breeding, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic.,Laboratory of Molecular Ecology, Institute of Animal Physiology and Genetics, Academy of Sciences of the Czech Republic, Liběchov, Czech Republic
| | - Luboš Vostrý
- Department of Genetics and Breeding, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic
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Association of Twelve Candidate Gene Polymorphisms with the Intramuscular Fat Content and Average Backfat Thickness of Chinese Suhuai Pigs. Animals (Basel) 2019; 9:ani9110858. [PMID: 31652864 PMCID: PMC6912197 DOI: 10.3390/ani9110858] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/18/2019] [Accepted: 10/21/2019] [Indexed: 12/16/2022] Open
Abstract
Simple Summary Appropriate intramuscular fat content (IFC) is the goal of consumers and the direction that breeders must pursue. However, it is difficult to improve the IFC but not average backfat thickness (ABT) by traditional breeding methods, and pigs must be slaughtered to accurately measure IFC. Marker-assisted selection (MAS) provides an economic and efficient method to improve the IFC in pigs. Our research indicated that the FABP3 (rs1110770079) single nucleotide polymorphism (SNP) could be a candidate gene associated with IFC (but not ABT), and IFC could be improved by selecting the individuals with a favorable genotype (GG) of FABP3 (rs1110770079) SNP for pig breeding. Abstract The present study aimed to identify the molecular markers for genes that influence intramuscular fat content (IFC), but not average backfat thickness (ABT). A total of 330 Suhuai pigs were slaughtered, and measurements of IFC and ABT were obtained. Phenotypic and genetic correlations between IFC and ABT were calculated. Thirteen single nucleotide polymorphisms (SNPs) among 12 candidate genes for IFC were analyzed, including FABP3, LIPE, IGF1, IGF2, LEP, LEPR, MC4R, PHKG1, RETN, RYR1, SCD, and UBE3C. Associations of the evaluated SNPs with IFCIFC and ABT were performed. Our results showed that the means of IFC and ABT were 1.99 ± 0.03 % and 26.68 ± 0.28 mm, respectively. The coefficients of variation (CVs) of IFC and ABT were 31.21% and 19.36%, respectively. The phenotypic and genetic correlations between IFC and ABT were moderate. Only the FABP3 (rs1110770079) was associated with IFC (p < 0.05) but not with ABT. Besides, there was a tendency for associations of RYR1 (rs344435545) and SCD (rs80912566) with IFC (p < 0.1). Our results indicated that the FABP3 (rs1110770079) SNP could be used as a marker to improve IFC without changing ABT in the Suhuai pig breeding system.
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