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  • 1
    In: Canadian Journal of Animal Science, Canadian Science Publishing, Vol. 100, No. 3 ( 2020-09-01), p. 426-431
    Abstract: The alpha (1) fucosyltransferase gene (FUT1) is a candidate gene for controlling the adhesion of Escherichia coli F18 receptor. Indeed, a single-nucleotide polymorphism, c.307G 〉 A, located in the gene is such that pigs with AA genotype are resistant to entero-toxigenic E. coli F18, whereas those with AG and GG genotypes are sensitive. An experiment was carried out in northern Vietnam from March 2016 to May 2017 to determine FUT1 genotype frequencies and the effect of these genotypes on production performance of Yorkshire pigs. A total of 613 animals were genotyped using polymerase chain reaction – restriction fragment length polymorphism method. The body weights at birth, weaning, initial fattening period, and final fattening period were collected from 611, 516, 479, and 418 animals, respectively, whereas backfat thickness, depth of longissimus dorsi, and lean meat percentage were recorded from 328 animals. The frequencies of FUT1 genotypes were found to be in Hardy–Weinberg equilibrium (P = 0.51). Effect of FUT1 genotype was not observed for all production traits (P  〉  0.05), whereas final body weight and depth of longissimus dorsi were significantly different between females and males (P  〈  0.05). These results suggest that selection of Yorkshire pigs resistant to entero-toxigenic E. coli F18 could be effective without adversely affecting average daily gain and lean meat.
    Type of Medium: Online Resource
    ISSN: 0008-3984 , 1918-1825
    Language: English
    Publisher: Canadian Science Publishing
    Publication Date: 2020
    detail.hit.zdb_id: 2016977-2
    SSG: 22
    SSG: 12
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  • 2
    In: Indian Journal of Animal Research, Agricultural Research Communication Center, , No. Of ( 2020-12-4)
    Abstract: Background: Fertility traits in pigs made a restricted progress through traditional selection. Applying marker assisted selection could improve these traits. The aim of the study was to investigate the effects of candidate genes Estrogen Receptor (ESR), Follicle Stimulating Hormone Beta (FSHB) and Prolactin Receptor (PRLR) on sperm quality traits of Landrace and Yorkshire boars under tropical conditions in Northern Vietnam.Methods: A total of 6306 ejaculates from 140 boars (92 Landrace and 48 Yorkshire) were collected to estimate sperm ejaculate volume (VOL), spermatozoon motility (MO), sperm concentration (CO) and total number of spermatozoon in ejaculate (NT). Ear tissue samples were collected for genotype identification of SNP present in ESR, FSHB and PRLR genes using PCR-RFLP technique. A mixed model was used to test the effect of different genetic and non-genetic factors on the sperm quality traits.Result: The genotype frequencies of ESR, FSHB and PRLR were in Hardy-Weinberg equilibrium for each breed. Age of boars and month of the year had significant effect on all the sperm quality traits (P less than 0.01) while effect of breed was found to be non-significant on all the sperm quality trait. FSHB gene significantly (P less than 0.05) affected VOL, MO and CO. Boars with BB genotype showed positive effect on VOL but negative effect on MO and CO in comparison with AA genotype boars. ESR gene showed only effect on VOL while PRLR affected only MO. Boars with AA and AB genotypes of ESR gene had a significantly higher VOL than those with BB genotype (P less than 0.05). For PRLR gen, AB genotype was associated with higher MO than AA genotype (P less than 0.05). These results suggest a possibility of using the existing polymorphisms in ESR, FSHB and PRLR genes to improve some sperm traits of Landrace and Yorkshire boars.
    Type of Medium: Online Resource
    ISSN: 0976-0555 , 0367-6722
    Language: Unknown
    Publisher: Agricultural Research Communication Center
    Publication Date: 2020
    SSG: 22
    SSG: 12
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  • 3
    Online Resource
    Online Resource
    Agricultural University Press ; 2023
    In:  Vietnam Journal of Agricultural Sciences Vol. 6, No. 1 ( 2023-03-29), p. 1711-1718
    In: Vietnam Journal of Agricultural Sciences, Agricultural University Press, Vol. 6, No. 1 ( 2023-03-29), p. 1711-1718
    Abstract: Porcine mucin 4 (MUC4) is a candidate gene for controlling the adhesion of the enterotoxigenic Escherichia coli (ETEC) F4 receptor. Polymorphisms of the MUC4 gene have been used as markers to identify the susceptibility of neonatal diarrhea in piglets for breeding selection. The objective of this study was to evaluate the effects of MUC4 g.243A 〉 G polymorphisms on the production traits of Landrace and Yorkshire pigs in Vietnam. A total of 1,057 Landrace and 1,361 Yorkshire piglets were used to estimate the allelic and genotypic frequencies of the polymorphisms. Body weights at birth, at weaning, at initial fattening (IBW), and at the end of fattening period (FBW), backfat thickness (BFT), and depth of the longissimus dorsi muscle (DLD) were measured and lean meat percentage was estimated. Frequency of the susceptibility allele A to ETEC was higher than the resistance allele G for both breeds based on genotyping piglet tails collected at birth. The AA, AG, and GG genotypes were present in Yorkshire while GG was not found in Landrace. The production traits were not affected (P 〉 0.05) by MUC4 polymorphisms except BFT and DLD (P 〈 0.05). There were interactions between gender and MUC4 genotype (P 〈 0.05) for IBW, FBW, average daily gain, and DLD. These traits of GG males were significantly higher than those of GG females (P 〈 0.05). The results suggest that selecting pigs carrying the GG genotype of MUC4, known as providing resistance to ETEC, do not negatively affect productive performance in Landrace and Yorkshire pigs.
    Type of Medium: Online Resource
    ISSN: 2588-1299 , 2588-1299
    Language: Unknown
    Publisher: Agricultural University Press
    Publication Date: 2023
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