Genetic evaluation of growth and reproductive performances of crossbred pigs reared under intensive system in tropical humid coastal climate

Chakurkar, E.B.; Sahu, Amiya Ranjan; Naik, Sajan S.; B, Chethan Kumar H; Gokuldas, P.P.

doi:10.1007/s11250-021-02677-4

Cited by 3 publications

(2 citation statements)

References 21 publications

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“…Among environmental factors, it can be included farm, parity, year, breeding season, and others. In contrast, genetic factors are mainly related to the genetic effects of breeds ( 30 ). In the present study, certain environmental factors affecting the reproductive traits of three pig breeds were analyzed.…”

Section: Discussionmentioning

confidence: 99%

Estimation of genetic parameters of pig reproductive traits

Yang,

Gan,

Yang

et al. 2023

Front. Vet. Sci.

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IntroductionIn this study, we aimed to estimate the genetic parameters of the reproductive traits in three popular commercial pig breeds: Duroc, Landrace, and Yorkshire. Additionally, we evaluated the factors that influence these traits.MethodWe collected data from a large number of litters, including 1,887 Duroc, 21,787 Landrace, and 74,796 Yorkshire litters. Using the ASReml-R software to analyze 11 traits, which included: total number of pigs born (TNB); number of piglets born alive (NBA); number of piglets born healthy (NBH); number of piglets born weak (NBW); number of new stillborn piglets (NS); number of old stillborn piglets (OS); number of piglets born with malformation (NBM); number of mummified piglets (NM); total litter birthweight (LBW); litter average weight (LAW); duration of gestational period (GP). We investigated the effects of 4 fixed factors on the genetic parameters of these traits.ResultsAmong the 11 reproductive-related traits, the gestational period belonged to the medium heritability traits (0.251–0.430), while remaining traits showed low heritability, ranging from 0.005 to 0.159. TNB, NBA, NBH, LBW had positive genetic correlation (0.737 ~ 0.981) and phenotype correlation (0.711 ~ 0.951). There was a negative genetic correlation between NBW and LAW (−0.452 ~ −0.978) and phenotypic correlation (−0.380 ~ −0.873). LBW was considered one of the most reasonable reproductive traits that could be used for breeding improvement. Repeatability of the three varieties was within the range of 0.000–0.097. In addition, the fixed effect selected in this study had a significant effect on Landrace and Yorkshire (p < 0.05).DiscussionWe found a positive correlation between LBW and TNB, NBA, and NBH, suggesting the potential for multi-trait association breeding. Factors such as farm, farrowing year, breeding season, and parity should be taken into consideration in practical production, as they may impact the reproductive performance of breeding pigs.

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Section: Discussionmentioning

confidence: 99%

Estimation of genetic parameters of pig reproductive traits

Yang,

Gan,

Yang

et al. 2023

Front. Vet. Sci.

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“…In order to be able to influence the productivity of pigs and increase efficiency of pork production, it is first necessary to analyze the factors related to the growth performance of pigs from birth to slaughter (Douglas et al, 2013;Camp Montoro et al, 2020). According to scientific papers, both genetic (Mohammadabadi et al, 2021;Malgwi et al, 2022;Vashchenko et al, 2022) and non-genetic (Chakurkar et al, 2021;Zappaterra et al, 2022;Vashchenko et al, 2023) factors affect the growth and development of piglets. This also applies to the reproductive capacity of sows (Vashchenko et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

The influence of genotype and feeding level of gilts on their further reproductive performance

Zhukorskyi,

Tsereniuk,

Sukhno

et al. 2023

Regul. Mech. Biosyst.

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Since the efficiency of pig breeding largely depends on the reproductive ability of sows, one of the promising areas of research in animal husbandry is the study of factors whose correction can improve the fertility and quality of the offspring. Our work purpose was to investigate the effect of gilts’ feeding level, MC4R genotype and interaction of these factors on the reproductive traits pigs after reaching puberty. The object of the study was crossbred pigs obtained as a result of the combination of sows of the Large White breed with boars of the Landrace breed. To carry out the research, the animals were divided into four groups that differed among themselves by the genotype of the melanocortin 4 receptor gene and the level of feeding of the experimental animals. To determine the genotype, the PCR-RFLP method was utilized. Genetic studies were conducted in a certified laboratory of the Institute of Pig Breeding and Agroindustrial Production. The reproductive capacity of the pigs was determined after receiving the farrowing by the following traits: piglets born alive per farrowing (animals), weight of litters of piglets at birth (kg), average weight of piglet at birth (kg), number of weaning piglets (animals), weight of litters of piglets at 28 days (kg), average weight of piglet at 28 days (kg), average daily gain of suckling piglets from 0 to 28 days (g). It was established that the traits of reproductive ability of crossbred Large White × Landrace pigs were affected by the interaction of genotype and feeding factors. When limiting the nutritional value of the daily diet, sows with the AG genotype outperformed those with the GG genotype by 1.2 piglets born alive per farrowing, by 3.0 kg for litter weight at birth, and by 0.1 kg for the average weight of a piglet at birth. The advantage of the AG genotype for average piglet weight at 28 days was even larger. Conversely, in conditions of a high level of feeding, animals with the GG genotype had higher productivity in terms of such traits as piglets born alive per farrowing – by 1.6 animals; weight of litters of piglets at birth – by 4.1 kg; for average weight of piglet at birth – 0.2 kg; by number of weaning piglets – 2.0 animals; by weight of litters of piglets at 28 days – 28.8 kg; for average weight of piglet at 28 days – 1.1 kg and for average daily gain from 0 to 28 days – 34.6 g. In the future, the goal is to develop a system of differentiated rationing of pigs' diets depending on their genotype.

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Identification of IGFBP-2 gene polymorphism and its association with performance traits in Large White Yorkshire pigs

Solanki,

Dhaka,

RATWAN

et al. 2024

Preprint

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Piggery promises distinct qualities like early maturity, high fecundity, produces up to 8–12 piglets in each farrowing, high feed conversion efficiency etc. that make it low-cost profitable enterprise. The objective of this study was to evaluate the genetic diversity in Large White Yorkshire pigs based on variations in IGFBP-2 gene. A total of 100 blood samples were collected from the pigs and polymorphism was explored in IGFBP-2 gene using PCR-RFLP technique. A 245 bp fragment in intron 2 of IGFBP-2 gene was amplified using PCR. Amplified PCR products of IGFBP-2 gene was digested using MspI restriction enzymes. In this study, polymorphic patterns were revealed for the IGFBP-2 gene. Two types of genotypes i.e. CC (55 and 190 bp) and CT (55, 190 and 245 bp) were observed for the targeted loci of intron 2 of IGFBP-2 gene. CC genotype was found to be dominant with frequency as 0.88. Frequencies of ‘C’ and ‘T’ alleles were 0.94 and 0.06 in Large White Yorkshire pigs. Results of Chi-squares test showed that the targeted locus of IGFBP-2 gene was in Hardy-Weinberg equilibrium (p < 0.05) in screened pig population. The CT genotyped animals had significantly higher litter size at birth (8.83 ± 0.46) and litter weight at birth (9.98 ± 0.42 kg) as compared to homozygous CC genotyped pigs. A total of 13 samples of intron 2 region of IGFBP-2 gene were sequenced and on comparison of sequencing results with reference sequence of Duroc cross (BV727778), one SNP was found at g. 278T > C locus and there was change in nucleotide at one position i.e. g. 171 A > G (Transition). In conclusion, favored genotypes of the IGFBP-2 gene may be propagated further in Large White Yorkshire pigs through breeding programmes. There is need to explore the association of identified SNPs with production and reproduction traits in large sample size of Large White Yorkshire pigs.

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Genetic evaluation of growth and reproductive performances of crossbred pigs reared under intensive system in tropical humid coastal climate

Cited by 3 publications

References 21 publications

Estimation of genetic parameters of pig reproductive traits

Estimation of genetic parameters of pig reproductive traits

The influence of genotype and feeding level of gilts on their further reproductive performance

Identification of IGFBP-2 gene polymorphism and its association with performance traits in Large White Yorkshire pigs

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