id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ct-13619	Allen , Twink 	Causes and cures for repeated early pregnancy failure in the mare 	2012	2	.pdf	application/pdf	767	20	26	As demonstrated convincingly by the late Cliff Irvine in New Zealand, progesterone deficiency is not a significant cause of early pregnancy loss in the mare in spite of the huge quantities of altrenogest and other progestagens shovelled into mares during this period. The precise role of the considerable quantities of estrogen secreted during early pregnancy, initially by the conceptus itself up to day 40, and by the primary and secondary corpora lutea (CL) thereafter in response to the luteotrophic stimulus of commencing eCG secretion, has not been determined.	cache/ct-13619.pdf	txt/ct-13619.txt