Ganhao, M F Plasma constituents in Nguni cows over forty-eight hours. [electronic resource] - Journal of the South African Veterinary Association Dec 1985 - 177-80 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1019-9128 Subjects--Topical Terms: Adrenocorticotropic Hormone--bloodAnimalsCatecholamines--bloodCattle--bloodCircadian RhythmEndorphins--bloodLipids--bloodStress, Physiological--bloodTime Factors