title: [The effect of monensin Na on the protein content of cow's milk and further performance criteria].
abstract: In two feeding experiments with 10 dairy cows each the effect of 200 mg monensin Na per animal and day in rations either rich in roughage or in concentrate was studied. In principle, the reactions caused by monensin supplement did not differ between the two types of rations. Monensin supplements resulted in a slight reduction of feed intake, a significantly lower milk fat content and, as a tendency, also a lower milk protein, particularly casein, content and a diminished amount of fat corrected milk (FCM). The pattern of fatty acids in the rumen was shifted in favour of propionic acid and the live weight gain of the cows was higher in the monensin group. There were no improvements with regard to the expenditure of feed and energy per kg FCM.
authors.affiliation: Akademie der Landwirtschaftswissenschaften der DDR, Forschungszentrum für Tierproduktion Dummerstorf-Rostock.
authors.forename: D
authors.initials: D
authors.lastname: Schüler
mesh_terms: D000821:Animal Feed; D000818:Animals; D002417:Cattle / Q000254:growth & development / Q000502:physiology*; D004435:Eating / Q000187:drug effects; D005227:Fatty Acids / Q000032:analysis; D005260:Female; D007774:Lactation / Q000187:drug effects*; D008894:Milk Proteins / Q000032:analysis*; D008985:Monensin / Q000008:administration & dosage / Q000494:pharmacology*; D011247:Pregnancy; D012417:Rumen / Q000032:analysis; D015430:Weight Gain / Q000187:drug effects
chemical_list: D005227:Fatty Acids; D008894:Milk Proteins; D008985:Monensin
vernacular_title: Untersuchungen zum Einfluss von Monensin-Na auf den Eiweissgehalt der Kuhmilch und weitere Leistungsmerkmale.