id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-281229-s9s7awtn	Apperson, K. Denise	Effects of feeding pregnant beef cows selenium-enriched alfalfa hay on passive transfer of ovalbumin in their newborn calves	2018-12-31		.txt	text/plain	5294	267	57	Based on our previous findings in dairy cows, the objective of this study was to determine if feeding Se-replete beef cows Se-enriched alfalfa (Medicago sativa) hay during the last trimester of gestation delays turnover and replacement of fetal intestinal epithelial cells in their calves, thus extending the period of time during which large proteins can be transferred from intestinal lumen to neonatal blood. In this paper, to test the hypothesis that passive transfer is enhanced in calves born to cows fed Se-biofortified alfalfa hay in the last trimester of pregnancy compared to calves born to Control cows fed the USDA-approved upper limit of Na-selenite in salt [21] , we administered 25 g oral ovalbumin (OVA) to calves at 12, 24, or 36 h after birth, and measured serum OVA concentrations to estimate the time of gut closure.	./cache/cord-281229-s9s7awtn.txt	./txt/cord-281229-s9s7awtn.txt