Морфологічний Склад Туш Свиней – Фінальних Гібридів Генотипу Йоркшир × Ландрас × Максгро В Залежності Від Вагових Кондицій

Samokhina, Evgeniya; Myhalko, O. G.

doi:10.31073/abg.55.17

Cited by 2 publications

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“…Pork production is the main component of the country's food security (Vashchenko, 2003). Population and income growth in developing countries is exacerbating the trend in per capita consumption of animal protein (Kopytets, 2018;Samokhina & Myhalko, 2018;Boltovska, 2022).…”

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confidence: 99%

The effect of the ryanodine receptor gene on the reproductive traits of Welsh sows

Zhukorskyi¹,

Tsereniuk

Vashchenko

et al. 2022

Regul. Mech. Biosyst.

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The reproductive performance of sows largely determines the efficiency of the entire pig farming industry. The purpose of our work is the evaluation of polymorphism of the ryanodine receptor gene and its impact on the reproductive traits of sows of the Welsh breed of pigs. For this study, 148 pigs of the Welsh breed were used. The reproductive traits of sows were evaluated in two adjacent generations. We conducted a comprehensive assessment of the reproductive ability of sows using the SIRQS (selection index of reproductive qualities of sows), determined phenotypic consolidation coefficients and assessed the genetic potential of the animals’ productivity. The polymorphism of the RYR1 gene was determined using polymerase chain reaction-restriction fragment length polymorphism analysis (PCR-RFLP). Data processing was performed using single-factor analysis of variance (ANOVA). Polymorphism of the ryanodine receptor gene in sows of the Welsh pig breed was evaluated. 8.0% of the animals were identified as carriers of the mutant allele of the RYR1 gene. However, no homozygous RYR1-nn animals were found. Pigs of the maternal generation carrying the homozygous NN genotype had better reproductive performance in all indicators. Sows that were carriers of the mutant allele were characterized by lower values of the genetic productivity potential compared with the entire estimated population for all productive traits. Sows which were free of the mutant allele of the RYR1 gene were characterized by large values of the SIRQS index. The values of the coefficients of phenotypic consolidation of the number of live born piglets in sows without the mutant allele were lower than in sows with the mutant allele n. Better performance of sows free of the mutant allele of the RYR1 gene was established over sows carrying it in all evaluated traits of reproductive capacity (for different traits P ranged from 0.021 to 1.0*10–4), except for number of piglets born alive per sow in the daughter generation. Sows with the NN genotype had better selection index values by 15.7% in the maternal generation and by 10.2% in the daughter generation. In order to increase the reproductive ability of sows in the studied population of Welsh pigs and achieve similar results in other herds of this breed, animals free from the mutant allele of the RYR1 gene should be selected for further reproduction in the process of breeding, while on the contrary, carriers of this gene should be gradually eliminated from the herd. To carry out breeding work, further research is needed on the entire population of Welsh pigs for the RYR1 gene.

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Section: Introductionmentioning

confidence: 99%

The effect of the ryanodine receptor gene on the reproductive traits of Welsh sows

Zhukorskyi¹,

Tsereniuk

Vashchenko

et al. 2022

Regul. Mech. Biosyst.

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The selective work with Bahachansky breed type within the Large White pigs

Peresadko

Berezovskyi

Луценко

et al. 2021

Tehnologìâ virobnictva ì pererobki produktìv tvarinnictva

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The paper deals with Bahachansky type breeding that has been carried out in “Ukraine” farm business, Velyka Bahachka Region, Poltava District. The studies evaluated breeding boars that represent the most numerous interbreed type lines. The breeding boars were evaluated by the quality of the offspring by fattening performance test and estimates based on probit indices. The findings evaluation of the boars according to the fattening and meat qualities of the offspring showed that the descendants of Yola 30581 and Kyuukka 30077 boars had the lowest fat depth (-2.15%, compared to the average level by the groups). At the same time, the offspring of boars Gültor 29997 and Denny 30939 distinguished themselves with the highest live weight at the age of 7 months (+2.4% and +1.92% compared to the average level of the group). It was found that there is a moderate correlation between the signs of fat depth and the average daily gain: -0.31 ± 0.137 (p <0.05). This nature of the correlation will facilitate the breeding, and will provide an opportunity to obtain animals with the largest possible average daily gain and lowest possible fat depth. According to the conducting of breeding work on the fat depth, the variability level was taken into account. It was found that the descendants of Kyuukka 30077 boar had the highest variability level on this basis (higher than the average of the sample by 0.82 percentage points). Evaluation of breeding boars by offspring quality using probit indices showed that the offspring of Gültor 29997 and Denny 30939 boars predominated in terms of live weight at the age of 7 months, in addition, the descendants of Denny 30939 boar were also better in terms of fat depth. It was established that the descendants of Gültor 29997 boar have probably better tenderness of meat in terms of quality. The descendants of Yola 30235 boar are notable for moisture-retaining ability, and the lowest costs of heat treatment were recorded for the descendants of the Tyke 30103 boar. Thus, the quality of meat is significantly affected not only by the level of feeding but also the genotype of the animal. Key words: the Large White Breed, pig farming, selective breeding, breeding type, variability, probit index.

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Морфологічний Склад Туш Свиней – Фінальних Гібридів Генотипу Йоркшир × Ландрас × Максгро В Залежності Від Вагових Кондицій

Cited by 2 publications

References 0 publications

The effect of the ryanodine receptor gene on the reproductive traits of Welsh sows

The effect of the ryanodine receptor gene on the reproductive traits of Welsh sows

The selective work with Bahachansky breed type within the Large White pigs

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