@conference {40578,
	title = {The effect of peripartum administration of ovine prolactin on lactogenesis in autumn-lambing ewes.},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {54},
	year = {1994},
	month = {Jan},
	pages = {115-118},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Two routes of oPRL supplementation were used to elevate peripheral or  
local concentrations of PRL in autumn-lambing ewes which, based on previous  
results, were expected to have low plasma PRL concentrations and milk yields  
relative to spring-lambing ewes.  Administration of 10 mg oPRL directly into  
the gland or subcutaneous injection of 0.5 mg/kg oPRL did not increase the  
milk yields, or change the composition of milk, compared to controls.  These  
results suggest that the circulating and intramammary concentrations of PRL in  
autumn-lambing ewes are not limiting lactogenesis.  However, because the  
plasma prolactin concentration in the ewes was unexpectedly high, it was not  
possible to reach firm conclusions regarding possible effects of supplementary  
oPRL in ewes with naturally low plasma PRL concentrations.  Nevertheless,  
the results indicate that raising the intramammary concentration of PRL around  
the time of parturition, in ewes with circulating PRL concentrations  
characteristic of normal spring-lambing ewes, does not enhance lactogenesis. 
 },
	issn = {1176-5283},
	author = {Peterson SW and MacKenzie DDS and McCutcheon SN and Lapwood KR}
}
