title: Effects of dietary daidzein supplementation of pregnant sows on carcass and meat quality and skeletal muscle cellularity of the progeny.
abstract: The effects of dietary daidzein during late gestation on maternal performance, neonatal body composition, carcass and meat quality at market weight, and skeletal muscle cellularity were studied. Multiparous sows received a soybean-free diet (n=8, control) or the same diet supplemented with 1mg daidzein/kg body weight (n=7) daily from d 85 of gestation to parturition. Litter size, litter weight, and birth weight remained unaffected by daidzein feeding. In newborn piglets from litters >15, the proportions of muscle tissue and skin tended to be decreased (P=0.09) or increased (P=0.03), respectively, after gestational daidzein feeding. The body fat percentage was higher in response to maternal daidzein (P=0.04). Postnatal growth and carcass composition at 180d of age were not affected, however, maternal daidzein supplementation led to increases in longissimus muscle pH(45) (P=0.02) and pH(end) (P=0.11) in pigs from large litters. The proportion of fast-twitch glycolytic fibres in semitendinosus muscle was increased (P=0.06) by maternal daidzein feeding. The results suggest that supplemental daidzein in the maternal diet during late gestation marginally affects meat quality and skeletal muscle cellularity of the progeny.
authors: Research Institute for the Biology of Farm Animals, Research Unit Muscle Biology and Growth, Wilhelm-Stahl-Allee 2, D-18196 Dummerstorf, Germany.
authors: C
authors: C
authors: Rehfeldt
authors: I
authors: I
authors: Adamovic
authors: G
authors: G
authors: Kuhn