Halothane gene and swine performance

Zhang, W; Kuhlers, D. L.; Rempel, W. E.

doi:10.2527/1992.7051307x

Cited by 37 publications

(30 citation statements)

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“…The lack of statistical differences (p > 0.05) in average daily gain between NN and Nn animals disagrees with the results reported by Zhang et al (1992) and McPhee et al (1994), and is supported by Leach et al (1996), Miller et al (1999) and Jin et al (2002). On the other hand, the lack of a difference (p > 0.05) in the feed:gain ratio between NN and Nn animals disagrees with Leach et al (1996), but agrees with the results reported by McPhee et al (1994) and Miller et al (1999).…”

Section: Discussioncontrasting

confidence: 54%

“…Higher (p < 0.05) skinless and fatless cut yields (HW, SFBSW and SFPSW) in Nn than in NN animals were also reported in the literature (Fisher et al, 2000a;Leach et al, 1996;Zhang et al, 1992). However, in contrast to Fisher et al (2000b) Nn animals also showed (p < 0.05) lower BCD than NN animals.…”

Section: Discussionmentioning

confidence: 51%

“…When in heterozygosis (Nn), the Hal gene continues to be related to poor meat quality, but recessive homozygous (nn) animals gain more weight when compared to normal homozygous (NN) ones (Bastos et al, 2001;Santana et al, 1998). Zhang et al (1992), studying Pietran x Yorkshire crossed animals, attributed 1 to 10% of the phenotypic variation in meat yield and growth traits to the PSS gene locus. Other studies have indicated that Nn animals presented advantages in traits such as feed efficiency, carcass yield and lean meat content compared to dominant homozygous animals (NN); however, they showed a higher incidence of PSE meat (Leach et al, 1996;Fisher et al, 2000c), a source of economic loss in the swine industry.…”

Section: Introductionmentioning

confidence: 99%

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Relationship between the Porcine Stress Syndrome gene and carcass and performance traits in F2 pigs resulting from divergent crosses

et al. 2005

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The PSS genotypes of 596 F 2 pigs produced by initial mating of Brazilian native boars commercial sows and were characterized by PCR-RFLP and their carcass and performance traits were evaluated. Among the 596 animals analyzed, 493 (82.72%) were characterized as NN and 103 (17.28%) as Nn. With respect to carcass traits, Nn animals presented higher (p < 0.05) right half carcass weight, left half carcass weight, loin depth and loin eye area, and lower shoulder backfat thickness, backfat thickness between last and next to last but one lumbar vertebrae and backfat thickness after last rib at 6.5 cm from the midline compared to NN animals. Nn animals also showed (p < 0.05) higher values for most of the cut yields, indicating higher cutting yields for animals carrying the n allele and lower values for bacon depth, confirming lower fat deposition in carcass. In addition, Nn animals presented (p < 0.05) lower values for the performance trait weight at 105 days of age. These results indicate that animals carrying the PSS gene generate leaner carcasses, higher cut yields, and that the effects of the gene can be observed even in divergent crosses.

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Section: Discussioncontrasting

confidence: 54%

Section: Discussionmentioning

confidence: 51%

Section: Introductionmentioning

confidence: 99%

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Relationship between the Porcine Stress Syndrome gene and carcass and performance traits in F2 pigs resulting from divergent crosses

et al. 2005

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“…As a consequence, in recessive homozygotes (nn) the gene hal leads to PSS and the major post-mortem manifestation of pale, soft and exudative pork (PSE). In heterozygosis (Nn) the hal gene produces lower carcass quality (Prommier and Houde, 1993;Cheak et al, 1994;Webb, 1996), but possibly higher carcass weight (Zhang et al, 1992;Leach et al, 1996;Fávero, 1997). The polymorphism at nucleotide 1843 of the hal gene has recently been characterized by a DNA test using blood or a muscle biopsy as the source of genomic DNA Cheak et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

Characterization of swine stress gene by DNA testing using plucked hair as a source of DNA

Bastos¹,

Federizzi²,

Deschamps³

et al. 2000

Genet. Mol. Biol.

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The swine stress gene (hal) in recessive homozygotes (nn) leads to porcine stress syndrome (PSS), and is associated with pale, soft, exudative pork (PSE). In heterozygosis (Nn) it is linked to poor carcass quality. A total of 179 pigs (86 Large White, 69 Landrace, 12 Duroc and 12 Pietrain) were characterized as normal homozygotes (NN), heterozygotes or recessive homozygotes following amplification of a target region of the hal gene using the polymerase chain reaction (PCR), followed by a restriction endonuclease assay. Plucked hair was used as a source of genomic DNA. The resulting PCR was digested with the restriction enzyme CfoI, followed by agarose gel electrophoresis. Of 179 animals tested, 70% were NN, 28% were Nn, and 2% were nn. The frequency of heterozygotes was higher (P < 0.05) in Landrace (0.43 for Nn) than in Large White pigs (0.09 for Nn). Nine of the 12 Pietrain animals were Nn and three were nn, suggesting a high frequency for the n allele in this breed. These results may be related to the incidence of PSS and PSE in these two breeds, both of which are widely used in breeding programs. The utilization of plucked hair as the source of genomic DNA was a non-invasive and quick method to screen farm animals.
O gene do estresse suíno (hal) em homozigose recessiva (nn) ocasiona a síndrome do estresse porcino (PSS), e está relacionado com a ocorrência da carne pálida, mole e exudativa (PSE). Em heterozigose (Nn) está associado com diminuição da qualidade de carcaça. Um total de 179 suínos (86 Large White, 69 Landrace, 12 Duroc e 12 Pietrain) foram caracterizados como homozigotos normais (NN), heterozigotos e homozigotos recessivos por análise do DNA usando a reação de polimerização em cadeia (PCR), seguida de um ensaio com endonuclease de restrição. Foi utilizado folículo piloso como fonte de DNA genômico. O produto do PCR foi digerido com a enzima de restrição CfoI, seguindo-se análise dos fragmentos por eletroforese em gel de agarose. Dentre os 179 animais analisados, 126 (70,0%) foram caracterizados como NN, 50 (28,0%) como Nn, e 3 (2,0%) caracterizados como nn. A freqüência de heterozigotos foi maior (P < 0,05) em animais da raça Landrace do que em animais da raça Large White. Nove animais da raça Pietrain foram classificados como heterozigotos e tres como homozigotos recessivos. Estes resultados podem estar relacionados com a incidência de PSS e PSE nestas raças, as quais são largamente utilizadas em programas de cruzamento. A utilização de folículo piloso como fonte de DNA genômico foi um método rápido e não-invasivo que viabiliza a execução da caracterização do gene hal

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“…, Jensen (1981), Lampo (1981), Jensen et Barton-Gade (1985), Simpson et Webb (1989), Zhang et al (1992), Wittmann et al (1993), Hanset et al (1995). Le …”

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confidence: 99%

Effets de l'introgression dans le génome Piétrain de l'allèle normal au locus de sensibilité à l'halothane

Hanset¹,

Dasnois²,

Scalais³

et al. 1995

Genet. Sel. Evol.

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Halothane gene and swine performance

Cited by 37 publications

References 0 publications

Relationship between the Porcine Stress Syndrome gene and carcass and performance traits in F2 pigs resulting from divergent crosses

Relationship between the Porcine Stress Syndrome gene and carcass and performance traits in F2 pigs resulting from divergent crosses

Characterization of swine stress gene by DNA testing using plucked hair as a source of DNA

Effets de l'introgression dans le génome Piétrain de l'allèle normal au locus de sensibilité à l'halothane

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