@article{001266689, title = "The energy supply of pregnant sows. 1. The effect of differing energy consumption during pregnancy on intake of feed during lactation and changes in liveweight of sows", author = "Ohle, H.O. and Kracht, W.", year = "1982", journal = "Tierernahrung und Futterung", volume = "13", pages = "94-102", url = "https://eurekamag.com/research/001/266/001266689.php" }