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The pH values and temperatures at 45 min, and 3, 9, 15, and 24 h postmortem in the LM and semimembranosus muscle (SM) and glycolytic potential in LM were measured in 1,030 F(2) animals from a White Duroc x Erhualian resource population. A whole genome scan was performed with 183 microsatellites covering 19 porcine chromosomes to detect QTL for traits(More)
To detect QTL for leg weakness and its related traits in pigs, a total of 1,484 F(2) pigs were recorded for leg (at 76 and 213 d) and gait scores (at 153 and 223 d) in a White Duroc x Erhualian intercross. The length and weight of the biceps brachii muscle were measured after slaughter at 240 d. A genome scan was performed with 183 microsatellite markers in(More)
To map genomic loci for leg weakness-related traits in pigs, leg scores and gait scores were recorded at 219 ± 18 d in a White Duroc × Erhualian F2 intercross population and a Chinese Sutai population. The biceps brachii muscle was dissected from the right front leg and its length and weight were measured after slaughter at 240 ± 3 d in the 2 populations.(More)
To identify QTL for feed consumption and feeding behavior traits in pigs, ADFI, feed conversion ratio (FCR), number of visits to the feeder per day (NVD), and average feeding rate (AFR) were recorded in 577 F(2) animals from a White Duroc x Chinese Erhualian resource population during the fattening period of 120 to 240 d. A whole genome scan was performed(More)
Feeding efficiency is a multifactorial and economically important trait in pigs. Genetic improvement of feeding efficiency will greatly benefit the pig industry. In the past decades, the hog market weight has increased worldwide. However, whether the genetic architecture of feeding efficiency is same or not at early and late fattening periods is unclear. To(More)
Models in QTL mapping can be improved by considering all potential variables, i.e. we can use remaining traits other than the trait under study as potential predictors. QTL mapping is often conducted by correcting for a few fixed effects or covariates (e.g. sex, age), although many traits with potential causal relationships between them are recorded. In(More)
Muscle fibre traits are related with meat quality in meat animals. In this study, a whole-genome scan with 183 microsatellite markers covering the pig genome was performed to identify quantitative trait loci (QTL) for cross-sectional area, numerical percentage and relative area of type I, IIA and IIB myofibres, fibre number per square centimetre and total(More)
We previously performed a genome scan in a White Duroc × Erhualian F(2) population and identified a QTL on SSC15 with strong effect on pH24h in M. Longissimus dorsi and M. Semimembranous muscle tissue. At that time, the mode of inheritance of this QTL was not clarified, and it was also unclear whether the observed QTL effect was completely or partially(More)
The aim of this study was to quantify the partial correlation coefficients (r(p)) between fat depot traits (FDT) and the fatty acid composition of abdominal subcutaneous adipose tissue and LM intramuscular fat in 639 F(2) pigs derived from a White Duroc × Chinese Erhualian cross. Fat depot traits are classified into 2 groups: 1 is adipose tissues (abdominal(More)
Adipocyte size and number are correlated with fat deposition, which is of major concern to human health and pork producers. To identify quantitative trait loci (QTL) for adipocyte size and number in pigs, a total of 341 F2 animals at 240 days in a White Duroc × Erhualian cross were measured for the area, perimeters, volume and number of adipocyte in(More)