Evaluation of genetic trends and determination of the optimal number of cumulative records of parity required in reproductive traits in a Large White pig population

Abstract. A scientific novelty is the study of the allele pool of domestic reproduction pigs, the determination of population genetic parameters by DNA markers, and the search for associations of genetic variants with economically significant traits. The aim of the work was to study the influence of SCD Y487830 polymorphism: g.2228 T > C to the IMF content and to search for associations of genotypes with economically significant traits in domestic reproduction pigs. The studies were conducted in 2019 on pigs reared in Selection and Hybrid Center LLC (Voronezh region). Genotyping were determined by the QuantStudio™ 5 Real-Time PCR System using the developed test system. The content of IMF (%), backfat thickness (mm), lean (%), live weight (kg) in 103 boars and 27 gilts Duroc pigs, 30 Large White boars was determined using an ExaGo ultrasound scanner. The main diet and animal welfare conditions were identical and corresponded to zoosanitary standards. Model equation for multivariate analysis of variance with interaction was used to evaluate the effect of genotype by SCD on productive qualities. The frequency of the T allele and TT genotype in the group of Duroc pigs was 0.419 and 12.7 %, respectively. Large White pig breeds were characterized by the frequency of the T allele – 0.686, TT genotype – 46.8 %. All Landrace pigs were carriers of the TT genotype. The superiority of the C allele carriers in the content of IMF was shown. The difference between Duroc boars with TT and CC genotypes was 0.42 % (P ≤ 0.05), and individuals with CC genotype exceeded TT genotype carriers in the backfat thickness of more than 3 mm (P ≤ 0.001). The results confirm the association of the SCD genotype with the content of intramuscular fat and the backfat thickness in the Duroc boars.

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STUDY OF WUR10000125 POLYMORPHISM ASSOCIATION WITH MEAT, FATTENING AND REPRODUCTIVE TRAITS OF LANDRACE AND LARGE WHITE PIG BREEDS

Sel skokhozyaistvennaya Biologiya ◽

10.15389/agrobiology.2019.4.713eng ◽

2019 ◽

Vol 54 (4) ◽

pp. 713-722

Author(s):

O.V. Kostyunina ◽

Keyword(s):

Reproductive Traits ◽

Large White ◽

Pig Breeds ◽

Large White Pig

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Variants in BMP7 and BMP15 3’-UTRs Associated with Reproductive Traits in a Large White Pig Population

Animals ◽

10.3390/ani9110905 ◽

2019 ◽

Vol 9 (11) ◽

pp. 905 ◽

Cited By ~ 2

Author(s):

Yin ◽

Du ◽

Li ◽

Pan ◽

Wu ◽

...

Keyword(s):

Point Mutations ◽

Reproductive Traits ◽

Regulatory Elements ◽

Large White ◽

Morphogenetic Protein ◽

Pooled Dna ◽

Trait Locus ◽

Whole Genome Resequencing ◽

Weight Trait ◽

Large White Pig

Bone morphogenetic protein 7 (BMP7) and BMP15, which encode members of the BMP family, have been identified by whole-genome resequencing as breeding-related genes that overlap with a known quantitative trait locus for reproductive traits. In this study, we investigated the effects of variants at the BMP7 and BMP15 gene loci on sow reproductive traits. We isolated 669 and 1213 bp sequences of the 3’-untranslated region (3’-UTR) of the porcine BMP7 and BMP15 genes, respectively, and detected several RNA regulatory elements, such as miRNA response elements and AU-rich elements. Pooled DNA sequencing identified two novel point mutations (viz., BMP7 c.1569A>G and BMP15 c.2366G>A) in the 3’-UTR. Association analysis showed that the c.1569A>G polymorphism was associated with the litter weight trait in a Large White pig population. Furthermore, analysis of the combined genetic effects revealed that AA/GA and AG/GG were the favorable combined genotypes for the total number of piglets born (TNB) and the total number of piglets born alive (NBA), whereas. Together, our findings confirm that BMP7 and BMP15 are candidate genes for porcine reproductive performance.

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The fat cover in gilts in relation to body condition and reproduction

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis ◽

10.11118/actaun201159010163 ◽

2011 ◽

Vol 59 (1) ◽

pp. 163-172

Author(s):

Václav Matoušek ◽

N. Kernerová ◽

L. Máchal ◽

J. Václavovský

Keyword(s):

Body Condition ◽

Body Condition Score ◽

Average Daily Gain ◽

Correlation Coefficients ◽

Reproductive Traits ◽

The Body ◽

Backfat Thickness ◽

Large White ◽

Meat Content

A study was conducted in a set of hybrid gilts of F1 generation of Czech Large White x Czech Landrace breeds coming from a multiplication herd. The objective of the study was to test a possibility of using the measured traits, i.e. backfat thickness (BT) and lean meat content (LM), for objective determination of changes in the body condition score of gilts during rearing and in relation to their subsequent fertility in parities 1. At the ultrasonic measurement in the multiplication herd the purchased gilts showed the average daily gain (ADG) from birth 612.5 g, average backfat thickness (ABT) 8.34 mm, loin muscle depth (LMD) 48.83 mm and LM 62.26%. At the first determination of own performance traits in a production herd the values of ABT, LMD and LM were 13.26 mm, D 59.29 mm and 58.83%, respectively. In a subsequent measurement (at the onset of standing heat) the respective values of ABT, LMD and LM were 15.15 mm, 62.31 mm and 57.42%. Correlation coefficients for the measured traits of own performance in relation to reproductive traits in parities 1 were mostly low, statistically insignificant.

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