Impact of sow and litter characteristics on colostrum yield, time for onset of lactation, and milk yield of sows

摘要: The aim of the present study was to estimate concurrent impact sow and litter characteristics on productivity. Sow productivity defined as colostrum yield (CY), onset lactation (the time point when milk secretion increased steeply, approximately 31 h postpartum), transition (MY; 36-60 mean MY in wk 1 4 lactation. Therefore, investigated how factors related with nutrition, characteristics, farrowing composition mammary secreta affected Data obtained from 5 previous experiments were used. variables describing all dependent Pearson coefficient correlation used examine relations among variables. results showed that CY positively correlated 2 (P < 0.05), for 0.05) but negatively 1, 2, 0.05). Multivariate regression analyses a backward elimination approach performed each variable investigate size, farrowing, (independent variables). Litter size both 0.001). Milk protein concentration 0.01), which indicated high yielding sows unable maintain synthesis during Additionally, intake ME prepartum ( included model BW d 3 P< Except equlization, none observed independent In conclusion, maximizing future, it may be rewarding pay attention period around lactation, special should given dietary supplies essential AA.