Nitrogenous constituents in plasma of foals weaned at three, four or six months of age |
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| Authors: | S.H. Jarrett MS W.A. Schurg PhD MS B.L. Reid PhD MS K.H. Mckeever PhD MS |
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| Affiliation: | 1. Chair of Animal Nutrition, Department of Veterinary Medicine, via Vienna no. 2, University of Sassari, 07100 Sassari, Italy;2. Institute of Animal Nutrition, Vetsuisse Faculty Zurich, University of Zurich, Winterthurerstrasse 270, 8057 Zurich, Switzerland;3. Research Unit of Animal Breeding Sciences, Department of Agraria, viale Italia no. 39, University of Sassari, 07100 Sassari, Italy;4. Research Unit of Animal Reproduction Pathology and Obstetric Clinics, Department of Veterinary Medicine, University of Sassari, via Vienna no. 2, 07100 Sassari, Italy;1. Pacific Geographical Institute FEB RAS, 7 Radio Street, 690041 Vladivostok, Russian Federation;2. A.N. Severtsov Institute of Ecology and Evolution RAS, 33 Leninskiy Prospect, 119071 Moscow, Russian Federation |
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| Abstract: | ![]()
A study was conducted to measure the nitrogenous constituents in the blood of foals weaned at 3, 4 or 6 months of age (four foals per weaning age).Jugular blood was sampled from one week prior to weaning until one month post-weaning, and was analyzed for total protein, albumin, creatinine, urea Nitrogen and free amino acid content. Results indicated that the concentrations of most of the constituents in the blood of foals were not altered by the age of weaning, however, free amino acids decreased as age at weaning increased and creatinine was significantly higher in foals weaned at 6 months of age. Plasma creatinine, lysine and methionine levels generally decreased between pre-weaning and one month post-weaning. These data establish baseline values for blood nitrogenous constituents in foals at weaning. |
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