Effect of Plant Extract YGF251 on Growth Performance, Reproductive Performance and Insulin Like Growth Factor Secretion in Primiparous and Multiparous Sows

Two experiments were conducted simultaneously to evaluate the effects of dietary plant extract supplement (YGF251) on growth performance, nutrient digestibility, insulin like growth factor-1 (IGF1) secretion and reproductive performance in sows. A total of 15 primiparous sows [(Landrace × Yorkshire) × Duroc] and their litters were used in Exp. 1, and 15 third-parity sows [(Landrace × Yorkshire) × Duroc] and their litters were used in Exp. 2. Sows were assigned randomly to 1 of 3 treatments with 5 replicates per treatment. The dietary treatments were as follows: 1) CON (basal diet), 2) PE1 (CON + plant extracts 0.5g/kg diet) and 3) PE2 (CON + plant extracts 1g/kg diet). In Exp. 1, the sows fed PE diet showed linear increase in the dry matter (P=0.03) and energy content (P=0.04) in colostrum compared with CON. Dry matter content in the milk of sows fed PE diets was also linearly increased (P=0.04) and energy content tended to increase (P=0.06) with the increase in the level of supplemented plant extract. Sows fed PE supplemented diet linearly increased IGF-1 concentration (P=0.04) with the increase in the dosage of supplemented plant extract. In Exp. 2, the body weight loss of third-parity sows was decreased linearly (P=0.04) at weaning with PE2 treatment showing lower body weight loss. Multiparous sows fed PE diet showed linear decrease (P=0.02) in back fat thickness loss. Sows fed PE diet showed linear increase in dry matter (P= 0.03) and energy content (P= 0.02) in the colostrum and there was a tendency of increase in fat (P=0.08) and energy content (P=0.06) in milk. In conclusion, plant extracts supplementation partially had positive effects in sows serum IGF-1, dry matter and energy content in colostrum in both first and third parity sows.