[Saliva ammonia and urea in the sheep. Effects of alimentary nitrogen additives (author's transl)].
The salivary elimination of ammonia and urea was studied in 4 permanently salivary duct fistulated sheep. Sheep were fed either a regular diet or the same diet with addition of non protein nitrogen (NPN). Individual saliva ammonia levels vary from 34 to 71 microgram N/100 ml. After intra-ruminal dosing with urea (10 g) or ammonia (2 g), the values may rise up to 1000 microgram N/100 ml. Saliva ammonia and blood ammonia changes follow the same direction. Daily saliva urea variations are correlated with feeding behaviour. NPN administration increases saliva urea and blood urea; both concentration curves are parallel.
D000641:Ammonia / Q000097:blood / Q000378:metabolism*; D000818:Animals; D005260:Female; D008297:Male; D009584:Nitrogen / Q000378:metabolism*; D012463:Saliva / Q000378:metabolism*; D012756:Sheep / Q000378:metabolism*; D014508:Urea / Q000097:blood / Q000378:metabolism*
D000641:Ammonia; D014508:Urea; D009584:Nitrogen
Ammoniac et urée salivaires chez le mouton. Influence de surcharges alimentaires azotées.