Some new variants of serum protease inhibitors in Meishan pigs

Summary Linkage maps of Sus scrofa chromosome 7 (SSC7) for three informative F2 families, based on Wild Boar (W), Meishan (M) and Pietrain (P) crosses, were constructed using 16 marker loci. Maps were consistent for the families, except the order of the markers PI2‐PO1A‐S0212 in the W × M family which was inverted in the M × P and W × P families. Important quantitative trait loci (QTLs) were localized in the region of the SLA complex in the M × P and W × M families. These explained up to 16% of F2 phenotypic variance for body conformation, fat deposition and muscling. In the W × P family, minor QTLs were mapped outside the SLA region. The highly significant QTL alleles were mainly additive (a > d). The Meishan alleles for QTL located in the SLA region were associated with higher head weights and carcass lengths, but with lower carcass fat contents than those from Wild Boar and Pietrain. The cryptic Meishan QTL allele, which reduces carcass fat, provides one of the first examples of transgressive segregation in animals and emphasizes that useful genetic variation can be hidden in the genetic background of a breed.

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Linkage and QTL mapping for Sus scrofa chromosome 7

Yue

Stratil

Čepica

et al. 2003

J Animal Breeding Genetics

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Linkage and QTL mapping for Sus scrofa chromosome 18

Dragos‐Wendrich

Stratil

Hojný

et al. 2003

J Animal Breeding Genetics

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Summary Linkage and QTL maps of Sus scrofa chromosome 18 (SSC18) were generated using five markers in three F2 families based on Wild Boar (W), Pietrain (P) and Meishan (P) crosses. The linkage maps were similar for the three families and confirm the published map. Quantitative trait loci (QTLs) for meat content, fat‐to‐meat ratio, weight of liver and food conversion ratio were mapped in the W × M family. A QTL for pH value 24 h after slaughter in Musculus semimembranosus was found in the M × P family. The QTL for carcass meat content and fat‐to‐meat ratio in the W × M family were localized near the leptin gene (LEP).

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Detection of Meat Species in Food Using a Single Primer Pair by PCR and a Novel DNA Extraction by Short Microwave Irradiation

Farouk

Batcha²,

Alaraidh

et al. 2008

Food Biotechnology

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Some new variants of serum protease inhibitors in Meishan pigs

Abstract: Serum samples of Meishan (13 animals) and Meishan x Wild Boar crosses (361 animals) were analysed by means of two-dimensional electrophoresis. Some new variants in protease inhibitor systems PO1A, PO1B and PI2 are reported.

Cited by 6 publications

References 1 publication

Linkage and QTL mapping for Sus scrofa chromosome 7

Linkage and QTL mapping for Sus scrofa chromosome 7

Linkage and QTL mapping for Sus scrofa chromosome 18

Detection of Meat Species in Food Using a Single Primer Pair by PCR and a Novel DNA Extraction by Short Microwave Irradiation

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