Note on Inheritance in Swine

Carr-Saunders, A. M.

doi:10.1126/science.55.1410.19

Cited by 6 publications

(5 citation statements)

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“…Here, the observation dealing with crossbreeding experiments between the Chinese indigenous CH pigs (uniform black) and imported BS pigs (domino black spotting) exhibits a "dominant black" coat color hereditary pattern. Similar result was reported that the allelism between "uniform black type" and "domino black spotting type" may also be inferred from Large Black × Berkshire cross pigs [13].…”

Section: Black Coat Variation Of Pig Being Associated With Mc1r Genesupporting

confidence: 85%

Evaluation of Coat Color Inheritance and Production Performance for Cossbreed from Chinese Indigenous Chenghua Pig Crossbred with Berkshire

Wang

Gong

Zou

et al. 2020

Preprint

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Background: Crossbreeding programs have been used extensively to improve the native pig’s overall production performance while maintaining superior meat quality. Chenghua (CH) pig is a traditional Chinese indigenous breed with superior meat quality characteristic but poor growth and carcass traits. In recent years, we implemented Berkshire × Chenghua (BC) crossbreeding scheme and have bred the new crossbreed BC pig through selection for four generations. The present objective was to determine the black coat inheritance and evaluate production performance for crossbreed BC F4 pigs in comparison with those of control purebred CH pigs. Results: Coat color of crossbreed BC pigs exhibits a “dominant black” hereditary pattern. Twelve mutation sites for MC1R gene were identified between “uniform black type” and “domino black spotting type” pigs and all piglets derived from boars or sows genotyped ED1ED1 homozygous for MC1R gene showed uniform black coat phenotype. The crossbreed BC F4 gilts displayed a relatively good reproductive performance, showing a higher litter (total no. born: 12.06 and no. born alive: 11.14) and tear size (13.14), heavier at farrowing litter (11.92 kg) and at weaning litter (65.87 kg) than purebred CH gilts, but they reached puberty later than CH gilts (178.44 vs.125.45). The crossbreed BC F4 pigs exhibited improved growth and carcass characteristics with a higher average daily live weight gain (535.28 g vs. 447.11 g), lower feed-to-gain ratio (3.06 vs. 4.03), and higher carcass lean meat rate (50.76% vs. 42.58%) than purebred CH pigs. Importantly, similar to those of purebred CH pigs, the crossbreed BC F4 pigs produced super meat-quality characteristics, showing ideal pH and meat-color values, high intramuscular fat content (3.24%) and water-holding capacity (drip loss: 1.68%), and acceptable muscle-fibre parameters. C18:1, C16:0, C18:0, and C18:2 were the main fatty acids in M. longissimus lumborum in the two breeds, and a very high polyunsaturated/saturated fatty acid ratio of ~0.39 was observed in the BC F4 pigs. Conclusion: These results indicate that crossbreed BC F4 pigs exhibit a uniform black coat pattern and acceptable total production performance, and it can be extensively used in commercial pig production to provide high-quality niche products.

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Section: Black Coat Variation Of Pig Being Associated With Mc1r Genesupporting

confidence: 85%

Evaluation of Coat Color Inheritance and Production Performance for Cossbreed from Chinese Indigenous Chenghua Pig Crossbred with Berkshire

Wang

Gong

Zou

et al. 2020

Preprint

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“…In theseHere, the observation dealing with crossbreeding experiments between the Chinese indigenous CH pigs (uniform black) and imported BK pigs (domino black spotting) yieldedexhibits a "dominant black" coat color hereditary pattern. A Ssimilar result was reported in whichthat the allelism between the "uniform black type" and "domino black spotting type" may also be inferred from Large Black × Berkshire crossed pigs [13].…”

Section: Black Coat Variation Of Pigs Being Associated With the Mc1r ...supporting

confidence: 61%

Evaluation of coat color inheritance and production performance for crossbreed from Chinese indigenous Chenghua pig crossbred with Berkshire

Yuan²,

Gong

et al. 2022

Anim Biosci

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Objective:The present objective This work was to determine black coat inheritance and evaluate production performance for crossbreed F4 pigs from Berkshire × Chenghua (BC) comparison compared with Chinese indigenous Chenghua (CH) pigs. Methods:The coat color phenotypes were recorded for more than 16,000 pigs, and the genotypes of MC1R gene were identified by sequencing. The reproductive performance for of 927 crossbreed BC F4 gilts and 320 purebred CH gilts were was recorded. 60 Sixty pigs per of each breed were randomly selected at approximatelyabout 60 days of age to determine growth performance during fattening period, which lasted for 150 days for BC pigs and 240 days for CH pigs, respectively. At the end of the fattening period, 30 pigs of eachper breed were slaughtered to determine carcass-composition and meat quality. Results:The Ccoat color of BC pigs exhibits a "dominant black" hereditary pattern, and all piglets derived from boars or sows genotyped E D1 E D1 homozygous for MC1R gene showed a uniform black coat phenotype. The BC F4 gilts displayed a relatively good reproductive performance, showing a higher litter and tear size, and were heavier at farrowing litter and at weaning litter than the CH gilts, but they reached puberty later than the CH gilts. BC F4 pigs exhibited improved growth and carcass characteristics with a higher average daily live weight gain, lower feed-to-gain ratio, and higher carcass lean meat rate than CH pigs. Similar to those ofLike CH pigs, BC F4 pigs produced superior meat-quality characteristics, showing ideal pH and meat-color values, high intramuscular fat content and water-holding capacity, and acceptable muscle-fibrefiber parameters. C18:1, C16:0, C18:0, and C18:2 were the main fatty acids in M. longissimus lumborum in the two breeds, and a remarkablyvery high polyunsaturated/saturated fatty acid ratio of ~0.39 was observed in the BC F4 pigs. Conclusion:The BC F4 pigs exhibit a uniform black coat pattern and acceptable total production performance.

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“…Аллель E p был описан в первой половине XX в. (Carr-Saunders, 1922;Kosswig, Ossent, 1931;Hetzer, 1945a-d). Тогда же был установлен и порядок доминиро-вания E + > E p (Hetzer, 1946).…”

Section: результатыunclassified

Polymorphic loci of coat color in mini-pigs

Nikitin¹,

Шатохин²,

Князев³

et al. 2016

Vestn. VOGiS

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The present work is phenomenological and purely descriptive. It shows polymorphism of colors in a breeding group of mini-pig in the Institute of Cyto logy and Genetics of the Siberian Branch of the Russian Academy of Sciences (ICG SB RAS) and makes some assumptions about the nature of this genetic diversity. In the ICG SB RAS mini-pig herd, wild-type coloration (agouti), black-spots, black and white color are present. All these options have variants, including previously undescribed, with genetically determined differences. In addition, the ICG SB RAS mini-pigs have variants inherent only to heterozygous individuals and archaic gray color described only in primitive domestic pig. Comparison of the observed color phenotypes in the breeding with literature data showed that EDNRB, KIT, KITLG and the MC1R are poly morphic loci, while ASIP, OCA2 and TYRP1 are monomorphic loci. Thus, the loci that control the most common coat colors in domestic pigs are polymorphic, while those controlling rare or relatively rare colors and monomorphic. The research allowed us to put forward some assumptions concerning the genetic determination of the phenotypic characteristics of color seen in the study group selection. Among these assumptions is one about the genetic control of juvenile colors in domestic pigs. Observations made in the ICG SB RAS mini-pig breeding group allowed us to examine and describe the features of age-related changes of an embodiment of black-motley suit, when newborn piglets originally have black-and-motley fur color on the brick-red background and at an age of one year, a gray roan background formed by a mixture of white and black hairs. In addition, it was shown that with the help of technical means black spots can also be detected on a black background.Key words: coat color of domestic pigs; color phenotypes; KIT; MC1R; ICG SB RAS mini-pigs.Настоящая работа имеет феноменологический, чисто описатель-ный характер. В ней рассмотрен полиморфизм окрасок мини-свиней селекционной группы Института цитологии и генетики Сибирского отделения Российской академии наук (ИЦиГ) и вы-сказаны некоторые предположения о генетической природе этого разнообразия. В стаде мини-свиней ИЦиГ присутствуют окраска дикого типа (агути), черно-пестрая, черная и белая масти. Все перечисленные масти имеют варианты, в том числе ранее в литературе не описанные, различия между которыми являются генетически обусловленными. Кроме этого, у мини-свиней ИЦиГ присутствуют варианты масти, присущие только гетерозиготным особям, а также описанная только у примитивных домашних свиней архаичная серая масть. Сопоставление наблюдаемых в селекционной группе фенотипов масти с литературными дан-ными показало, что полиморфны локусы EDNRB, KIT, KITLG и MC1R, а мономорфны -ASIP, OCA2 и TYRP1. Таким образом, локусы, кото-рые контролируют наиболее распространенные масти домаш-них свиней, полиморфны, а локусы, контролирующие редкие или относительно редкие масти, мономорфны. Исследование позво лило выдвинуть некоторые предположения, касающиеся осо бенностей генетич...

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Note on Inheritance in Swine

Cited by 6 publications

References 0 publications

Evaluation of Coat Color Inheritance and Production Performance for Cossbreed from Chinese Indigenous Chenghua Pig Crossbred with Berkshire

Evaluation of Coat Color Inheritance and Production Performance for Cossbreed from Chinese Indigenous Chenghua Pig Crossbred with Berkshire

Evaluation of coat color inheritance and production performance for crossbreed from Chinese indigenous Chenghua pig crossbred with Berkshire

Polymorphic loci of coat color in mini-pigs

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