Multi-vertebrae variation potentially contribute to carcass length and weight of Kazakh sheep

Li, Cunyuan; Zhang, Xiangyu; Cao, Yang; Wei, Junchang; You, Shuang; Jiang, Yu; Kuojun, Cai; Wumaier, Wusiman; Guo, Dandan; Qi, Jiangjiao; Chen, Chuangfu; Ni, Wei; Hu, Shengwei

doi:10.1016/j.smallrumres.2017.02.021

Cited by 19 publications

(19 citation statements)

References 8 publications

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“…It can be inferred from this result that one extra lumbar vertebra causes 2.275 cm in length. This finding is similar with Li et al's (2017) 2015) results (lumbar vertebrae length=2.91 cm) in the United Kingdom. In addition to those, same condition was reported in the pig breeds (King and Roberts, 1960;Tohara, 1967).…”

Section: Resultssupporting

confidence: 92%

The First Identification and Some Carcass Characteristics of The 7 Lumbar Vertebrae in Sheep in Türkiye

2022

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The purpose of this study was to draw attention to the number of the lumbar vertebrae in BA B1 crosses (Bafra×F1 (Bafra×Akkaraman)) lambs (75% Bafra and 25% Akkaraman), and the effect of 7 lumbar vertebrae on some carcass traits. Even though some studies reported that the number of the lumbar vertebrae might be considerably different dependent on the sheep genotype, this has not been reported for Turkish breeds. While a study on the BA B1 lambs has been performed, seven lumbar vertebrae have been identified in four of the eighteen lambs. The means of the carcass length (80.800±0.583 and 84.375±1.375 cm) (P = 0.036), leg weight (5.942±0.079 and 6.209±0.052kg) (P = 0.032), loin weight (1.560±0.096 and 1.849±0.060 kg) (P = 0.048), and loin's lean weight (0.875±0.059 and 1.058±0.032 kg) (P=0.040) were statistically different between the groups of lambs (6 and 7 lumbar vertebrae, respectively). In conclusion, the number of lumbar vertebrae has economically affected important parts of the carcass.

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Section: Resultssupporting

confidence: 92%

The First Identification and Some Carcass Characteristics of The 7 Lumbar Vertebrae in Sheep in Türkiye

2022

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“…A study of European sheep breeds (Texel, Scottish Blackface, Texel × Mule, and Poll Dorset × Mule) by Donaldson et al have shown that multi-vertebral traits can significantly increase the length of the body (and carcass) (Donaldson et al, 2013; Donaldson et al, 2014). The results of these studies are consistent with those of our previous reports showing that multi-vertebral variation may contribute to the performance of Kazakh sheep (Li et al, 2017), but one study showed that the number of rib pairs has little impact on meat production traits. However, an increased number of thoracic vertebrae will result in an increased number of rib pairs, which is a valuable economic trait in sheep due to the preference for lamb chops.…”

Section: Introductionsupporting

confidence: 92%

Whole-Genome Resequencing Reveals Loci Associated With Thoracic Vertebrae Number in Sheep

et al. 2019

Front. Genet.

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The number of vertebrae, especially thoracic vertebrae, is an important economic trait that may influence carcass length and meat production in animals. However, the genetic basis of vertebrae number in sheep is still poorly understood. To detect the candidate genes, 400 increased number of thoracic vertebrae (T14L6) and 200 normal (T13L6) Kazakh sheep were collected. We generated and sequenced 60 pools of genomic DNA (each pool prepared by mixing genomic DNA from 10 sheep with the same thoracic traits), with an average depth of coverage of 25.65×. We identified a total of 42,075,402 SNPs and 11 putatively selected genomic regions, including the VRTN gene and the HoxA gene family that regulate vertebral development. The most prominent areas of selective elimination were located in a region of chromosome 7, including VRTN , which regulates spinal development and morphology. Further investigation indicated that the expression level of the VRTN gene during fetal development was significantly higher in sheep with more thoracic vertebrae than in those with a normal number of thoracic vertebrae. A genome-wide comparison between sheep with increased and normal numbers of thoracic vertebrae showed that the VRTN gene is the major selection locus for the number of thoracic vertebrae in sheep and has the potential to be utilized in sheep breeding in the future.

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“…Studies in pig, yak and sheep suggested that multi-vertebrae traits contributed to carcass length [ 12 , 13 , 20 , 28 ]. Body length of livestock was positively correlated with meat yield and the skin production.…”

Section: Discussionmentioning

confidence: 99%

“…Body length is an important factor affecting livestock slaughter performance [ 7 ], as a longer carcass means longer loins and more meat production, a larger body size means a larger body surface area and more skin yield. A variation in vertebrae number is found in a few domestic animals such as pigs [ 8 , 9 , 10 ], sheep [ 11 , 12 , 13 ], and cattle [ 14 ]. In European commercial pig breeds, a 14% variation in body length can be attributed to vertebrae number variation, for each additional vertebrae, there was an increase in length of about 15 mm [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

“…In European commercial pig breeds, a 14% variation in body length can be attributed to vertebrae number variation, for each additional vertebrae, there was an increase in length of about 15 mm [ 15 ]. In Asia Kazakh sheep, the carcass length of sheep possessing 20 thoracolumbar vertebrae increased 2.22–2.93 cm compared with that of sheep possessing 19 thoracolumbar vertebrae [ 13 ]. Few studies reported vertebrae number variation in equine animals.…”

Section: Introductionmentioning

confidence: 99%

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Multi-Thoracolumbar Variations and NR6A1 Gene Polymorphisms Potentially Associated with Body Size and Carcass Traits of Dezhou Donkey

Liu

Gao

Wang

et al. 2022

Animals

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The number of thoracolumbar vertebrae is a quantitative trait positively correlated with the economic traits of livestock. More thoracolumbar vertebrae individuals could genetically be used to improve the livestock population, as more thoracolumbar vertebrae means a longer carcass, which could bring more meat production. Nuclear receptor subfamily 6 group A member 1 (NR6A1) is considered a strong candidate gene for effecting the number of vertebrae in livestock. The purposes of this study are as follows: (a) Analyzing the effect of TLN variation on body size and carcass traits of Dezhou donkey; (b) Studying the distribution of seven single nucleotide variants (SNVs) in NR6A1 gene of Dezhou donkey; (c) Exploring the relationship between latent SNVs and TLN, the body size and carcass traits. We examined the thoracic and lumbar vertebrae number and seven SNVs in NR6A1 gene of 455 Dezhou donkeys, and analyzed the relationships between them. Five types of thoracolumbar combinations (T17L5 (individual with 17 thoracic and five lumbar vertebrae) 2.4%, T18L5 75.8%, T19L5 1.1%, T17L6 11.9%, and T18L6 8.8%) of Dezhou donkeys were detected in this study. For one thoracolumbar vertebra added, the body length of Dezhou donkey increases by 3 cm and the carcass weight increases by 6 kg. Seven SNVs (g.18093100G > T, g.18094587G > T, g.18106043G > T, g.18108764G > T, g.18110615T > G, g.18112000C > T and g.18114954T > G) of the NR6A1 gene were found to have a significant association with the TLN, body size and carcass traits of Dezhou donkey (p < 0.05), respectively. For instance, g.18114954C > T is significantly associated with lumber vertebrae number, the total number of thoracolumbar, and carcass weight, and individuals with TT genotype had significantly larger value than CC genotype (p < 0.05). Using these 7SNVs, 16 different haplotypes were estimated. Compared to Hap3Hap3, individuals homozygous for Hap2Hap2 showed significantly longer length in one thoracic spine (STL), the total thoracic vertebrae and one thoracolumbar spine. Our study will not only extend the understanding of genetic variation in the NR6A1 gene of Dezhou donkey, but also provide useful information for marker assisted selection in donkey breeding program.

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Multi-vertebrae variation potentially contribute to carcass length and weight of Kazakh sheep

Cited by 19 publications

References 8 publications

The First Identification and Some Carcass Characteristics of The 7 Lumbar Vertebrae in Sheep in Türkiye

The First Identification and Some Carcass Characteristics of The 7 Lumbar Vertebrae in Sheep in Türkiye

Whole-Genome Resequencing Reveals Loci Associated With Thoracic Vertebrae Number in Sheep

Multi-Thoracolumbar Variations and NR6A1 Gene Polymorphisms Potentially Associated with Body Size and Carcass Traits of Dezhou Donkey

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