Effect of stress susceptibility on some reproductive traits in Belgian Landrace pigs

Lampo, P.; Nauwynck, W.; Bouquet, Y.; Zeveren, Alex Van

doi:10.1016/0301-6226(85)90006-5

Cited by 14 publications

(7 citation statements)

References 10 publications

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“…Studies involving Belgian and British Landrace dams (Lampo et al, 1985;Simpson et al, 1986) have focused on comparisons between halothane positive ( HP; PSS genotype nn) and halothane negative ( HN; PSS genotypes NN or Nn) females. These studies generally reported HP sows to produce poorer litter weights at birth and 21 d but to have litters with NBA and NO21 similar to those of HN females.…”

Section: Resultsmentioning

confidence: 99%

Maternal performance differences between porcine stress syndrome-normal and -carrier Landrace females.

Stalder

Christian

Rothschild

et al. 1997

Journal of Animal Science

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Differences between porcine stress syndrome (PSS) normal (NN) and carrier (Nn) Landrace dams were determined for adjusted number of pigs born alive, adjusted number of pigs at 21 d, adjusted 21-d litter weight, proportion of pigs surviving to 21 d, and farrowing interval. Data were analyzed from a total of 841 females, 623 normal (NN) and 218 carriers (Nn) having 2,231 and 869 records, respectively. Three susceptible (nn) females from two herds were dropped from the analysis because of their small contribution to the total number of records. Frequency of the recessive PSS allele ranged from .07 to .28 in the nine herds involved in this study. Data were adjusted using Landrace breed-specific adjustments and analyzed with mixed-model derivative-free REML procedures fitting the dams' PSS genotype as a fixed effect in the model. Only females having two or more successive parities were used in the analysis of farrowing interval, resulting in a reduction of total records analyzed to 2,201 (1,564 NN and ABSTRACT:Differences between porcine stress syndrome (PSS) normal ( N N ) and carrier ( N n ) Landrace dams were determined for adjusted number of pigs born alive, adjusted number of pigs at 21 d, adjusted 21-d litter weight, proportion of pigs surviving to 21 d, and farrowing interval. Data were analyzed from a total of 841 females, 623 normal ( N N ) and 218 carriers ( N n ) having 2,231 and 869 records, respectively. Three susceptible (nn) females from two herds were dropped from the analysis because of their small contribution to the total number of records. Frequency of the recessive PSS allele ranged from .07 to .28 in the nine herds involved in this study. Data were adjusted using Landrace breedspecific adjustments and analyzed with mixed-model derivative-free REML procedures fitting the dams' PSS genotype as a fixed effect in the model. Only females having two or more successive parities were used in the analysis of farrowing interval, resulting in a reduction of total records analyzed to 2,201 (1,564 NN and 637 Nn records) from 632 females (445 NN and 187 Nn females). No differences between NN and Nn dams were observed for adjusted number of pigs born alive, adjusted number of pigs at 21 d, adjusted 21-d litter weight, proportion of pigs surviving to 21 d, and farrowing interval. The results of this investigation indicate no significant maternal performance differences between PSS NN or Nn Landrace dams.

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Section: Resultsmentioning

confidence: 99%

Maternal performance differences between porcine stress syndrome-normal and -carrier Landrace females.

Stalder

Christian

Rothschild

et al. 1997

Journal of Animal Science

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“…The purpose of this so-called Belgian Negative breed is to take advantage of stress resistance in sow lines, e.g. reduced incidences of stress deaths, somewhat higher daily live-weight gain and better fertility (Lampo, Nauwynck, Bouquet and van Zeveren, 1985). …”

Section: Introductionmentioning

confidence: 99%

Meat and carcass quality of heavy muscled Belgian slaughter pigs as influenced by halothane sensitivity and breed

Smet

Pauwels²,

Vervaeke

et al. 1995

Anim. Sci.

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In order to investigate the antagonism between meat quantity and quality, halothane-positive (HP) and -negative (HN) Belgian Landrace pigs (B) and Pietrain X Belgian Landrace crosses (PB) were compared for several carcass and meat quality traits. They originated from three commercial farms and were slaughtered in a commercial abattoir. Carcass quality was determined by a SKGlI-device. Meat quality traits were measured on the warm and cold carcass, and on a loin slice. HP and PB pigs showed better carcass quality, and inferior meat quality, compared with HN and B pigs respectively. No significant halothane sensitivity X breed interaction was apparent for most traits. Sex did not affect meat quality. Slaughter day variance was considerable. The inverse relationship between lean content or conformation score and meat quality was generally more pronounced in the HP group compared to the HN group (except for drip and cooking losses). Irrespective of halothane status, carcass conformational score was more negatively related to meat quality than was lean content.

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“…A direct comparison of the results with literature data are difficult. Lampo et al. (1985) did not find significant differences in litter size traits between two groups of halothane‐negative sows (Nn) which were mated with halothane‐positive (nn) or halothane‐negative (Nn) boars, respectively.…”

Section: Discussionmentioning

confidence: 80%

Impact of RYR1 genotype of Piétrain boars on litter traits of Czech Large White × Czech Landrace crossbred sows

Čechová

Wolf

Trčka

2007

J Animal Breeding Genetics

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Piétrain boars of different ryanodine receptor (RYR1) genotypes (NN, Nn and nn, three boars each) were mated with approximately 10 Czech Large White x Czech Landrace sows (genotype NN) each to produce one litter per sow. The progeny of nn boars had a significantly higher individual weaning weight (7.31 kg versus 6.86 kg) and average daily gain from birth to weaning (252 g/day versus 240 g/day) than the progeny of NN boars. Furthermore, piglets from nn boars differed statistically significant also from piglets of boars with the Nn genotype for these two traits. The litters of the NN boars were greater by 0.5 piglets than the litters of the nn boars for the total number of piglets born, piglets born alive and piglets weaned, but the differences were not significant. The Nn genotype showed for all litter size traits and the number of stillborn piglets the best values. The difference between the genotypes Nn and nn was statistically significant at the 0.05 level for the number of piglets born alive and the number of piglets weaned.

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Effect of stress susceptibility on some reproductive traits in Belgian Landrace pigs

Cited by 14 publications

References 10 publications

Maternal performance differences between porcine stress syndrome-normal and -carrier Landrace females.

Maternal performance differences between porcine stress syndrome-normal and -carrier Landrace females.

Meat and carcass quality of heavy muscled Belgian slaughter pigs as influenced by halothane sensitivity and breed

Impact of RYR1 genotype of Piétrain boars on litter traits of Czech Large White × Czech Landrace crossbred sows

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