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Polymorphism of VRTN Gene g.20311_20312ins291 Was Associated with the Number of Ribs, Carcass Diagonal Length and Cannon Bone Circumference in Suhuai Pigs

1
Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China
2
Huaian Academy, Nanjing Agricultural University, Huaian 223005, China
3
Huaiyin pig Breeding Farm of Huaian City, Huaian 223322, China
4
Guangdong Wangjiang Pig Breeding Company Limited, Yangjiang 529948, China
*
Author to whom correspondence should be addressed.
Animals 2020, 10(3), 484; https://doi.org/10.3390/ani10030484
Received: 23 January 2020 / Revised: 7 March 2020 / Accepted: 10 March 2020 / Published: 13 March 2020
(This article belongs to the Section Animal Genetics and Genomics)
An increase in the number of ribs (RIB) could improve carcass length (CL) and body size. Cannon bone circumference (CBC) is a pivotal body size trait, and a large CBC could enhance the capacity to bear excessive body weight, vigorous exercise, and resistance to injuries. Several researchers showed that the vertnin (VRTN) gene g.20311_20312ins291 (NC_010449.5 7: g.20311_20312ins291) is an important variant that is related to RIB and CL of Western pigs. However, it is unknown whether this variant could affect the CBC of pigs. Our study showed that this variant was significantly associated with RIB, carcass diagonal length (CDL), and CBC in Suhuai pigs; therefore, it could be used as a potential molecular marker for improving RIB, CDL, and CBC in this breed.
The vertnin (VRTN) gene g.20311_20312ins291 was reported as an important variant related to the number of ribs (RIB), and the ins/ins genotype was advantageous for improving RIB of Western pigs. The purpose of this study was to determine whether the VRTN gene g.20311_20312ins291 influences RIB, carcass traits, and body size traits, including cannon bone circumference (CBC) in Chinese Suhuai pigs. We found that the VRTN gene g.20311_20312ins291 was polymorphic in Suhuai fattening pigs and gilts. The polymorphism of g.20311_20312ins291 was significantly associated with RIB and CDL in Suhuai fattening pigs (p < 0.01), whereas this variant had no influence on carcass weight (CWT). There was a tendency of association between this variant and carcass straight length (CSL) in Suhuai fattening pigs (p = 0.06). The polymorphism of g.20311_20312ins291 was also significantly associated with CBC in Suhuai gilts (p = 0.04). Furthermore, CBC was positively genetically correlated with body length (0.22, p < 0.01) and body weight (0.15, p < 0.01). Our results indicated that the VRTN gene g.20311_20312ins291 could be used as a potential marker for improving RIB, CDL, and CBC in Suhuai pigs. View Full-Text
Keywords: VRTN gene g.20311_20312ins291; the number of ribs; cannon bone circumference; Suhuai pigs VRTN gene g.20311_20312ins291; the number of ribs; cannon bone circumference; Suhuai pigs
MDPI and ACS Style

Jiang, N.; Liu, C.; Lan, T.; Zhang, Q.; Cao, Y.; Pu, G.; Niu, P.; Zhang, Z.; Li, Q.; Zhou, J.; Li, X.; Hou, L.; Huang, R.; Li, P. Polymorphism of VRTN Gene g.20311_20312ins291 Was Associated with the Number of Ribs, Carcass Diagonal Length and Cannon Bone Circumference in Suhuai Pigs. Animals 2020, 10, 484.

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