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  4. Effect of porcine stress syndrome genotype on the maternal performance of a composite line of stress-susceptible swine
 
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Effect of porcine stress syndrome genotype on the maternal performance of a composite line of stress-susceptible swine

Journal
Journal of Animal Breeding and Genetics
Journal Volume
115
Journal Issue
1-6
Start Page
191
End Page
198
ISSN
0931-2668
1439-0388
Date Issued
2011-03-17
Author(s)
Stalder, K. J.
Christian, L. L.
Rothschild, M. F.
Lin En Chung  
DOI
10.1111/j.1439-0388.1998.tb00342.x
URI
https://scholars.lib.ntu.edu.tw/handle/123456789/735108
Abstract
Summary Reproductive data was collected on 61 porcine stress syndrome (PSS) normal (NN), 140 PSS carrier (Nn), and 132 PSS positive (nn) composite line females farrowing 145, 358, and 362 litters, respectively. Data were adjusted for parity, number after transfer (pigs cross‐fostered 1 to 3 days after farrowing) and age of litters not weighed exactly at 21 days of age by using established adjustment factors and analysed using a mixed‐model, derivative‐free REML and best linear unbiased prediction or best linear unbiased estimation procedures fitting the sows' PSS genotype as a fixed effect in the model. PSS‐carrier (Nn) females farrowed more pigs per litter (p < 0.05) than either normal (NN) or positive (nn) females. PSS‐NN females had more pigs (p < 0.05) at 21 days than nn females. Litters from PSS‐NN females were heavier (p < 0.05) at 21 days than litters from Nn or nn females. Additionally, PSS‐Nn females had heavier litters (p < 0.05) at 21 days than nn females. PSS‐NN females raised a higher proportion (p < 0.05) of pigs from transfer to 21 days than either Nn or nn females and NN females had more pigs, heavier litters and raised a higher proportion of their pigs to 42 days than did nn females (p < 0.05). PSS‐Nn females produced heavier litter weights (p < 0.05) and a higher proportion of pigs raised to 42 days (p < 0.05) than nn females. The results of this study indicate that the detrimental effects of the PSSnallele preclude its use in commercial production‐maternal lines. Zusammenfassung Porciner Stress Syndrome Genotyp und Mutterleistung einer gemischten Linie stress‐empfindlicher Schweine Reproductive Daten Stammen von 61 stress syndrom (Pss) normalen (NN), 140 Pss Traegern (Nn) und 132 Pss positiven (nn) Sauen mit 195, 358 und 362 Wuerfen. Die Daten wurden fuer Wurffolge, Zahl nach Transfer und Wiegealter korrigiert und mit gemischt modell, derivativ freinem REML analysiert, mit Pss der Sau als fixe Groesse. BLUP und BLUE wurden geschaetzt. Nn Sauen hatten groessere Wuerfe als NN und nn Tiere (p < 0.05), NN‐Sauen bei 21 Tagen mehr als nn und ihre Wuerfe waren schwerer (p < 0.05) als die der anderen. Pss‐Nn Sauen uebertrafen in 21‐Tage Wurfgewicht nn Sauen. Bei Pss‐NN Tieren ueberlebten mehr Transfer Ferkel bis 21 Tagen als bei der andern Genotypen, sie hatten mehr Ferkel, schwerere Wuerfe und hoehere Ueberlebensraten bis 42 Tagen als nn Sauen. Nn Sauen uebertrafen diese in 42‐Tagen Wurfgewicht und Ueberlebensrate (p < 0.05). Die unguenstigen Wirkungen des Pssnalleles sprechen gegen seine verwendung in maternalen Linien.
Publisher
Wiley
Type
journal article

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