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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)
Growth and fatness are economically important traits in pigs. In this study, a genome scan was performed to detect quantitative trait loci (QTL) for 14 growth and fatness traits related to body weight, backfat thickness and fat weight in a large-scale White Duroc × Erhualian F(2) intercross. A total of 76 genome-wide significant QTL were mapped to 16(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)
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)
Prevalence of swine respiratory disease causes poor growth performance in and serious economic losses to the swine industry. In this study, a categorical trait of enzootic pneumonia-like (EPL) score representing the infection gradient of a respiratory disease, more likely enzootic pneumonia, was recorded in a herd of 332 Chinese Erhualian pigs. According to(More)
To study the effects of a chocolate bar supplementation before exercise on improving recovery of physiological and metabolic changes induced by exercise, 16 male students aged 18-20 years voluntarily served as subjects. A crossover design was employed. Each subject took part in two trials and ran an hour on a treadmill with the intensity of keeping heart(More)
The effects of zinc deficiency and testosterone (T) supplement on T synthesis and skeletal muscle were investigated in zinc-deficient and zinc-replenished rats. The results showed that there were significantly lower weights of body, testes and musculus extensor digitorum longus, lower contents of T in testes and serum and total RNA in the profundus(More)