Slow Release Somatotropin in Dairy Heifers and Cows Fed Two Levels of Energy Concentrate. 2. Plasma Hormones and Metabolites

Fifty Holstein dairy cows (26 primiparous) were used to evaluate effects of level of concentrate and of slow release recombinant bST on plasma hormones and metabolites. Blood was sampled at wk 14 and 20 of lactation, which was 5 and 11 wk after the first bST injection. In addition, at d 3 and 10 aft...

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Veröffentlicht in:	Journal of dairy science 1991-04, Vol.74 (4), p.1382-1394
Hauptverfasser:	Cisse, M., Chilliard, Y., Coxam, V., Davicco, M.J., Remond, B.
Format:	Artikel
Sprache:	eng
Schlagworte:	3-Hydroxybutyric Acid ACIDE GRAS ACIDOS GRASOS ALIMENT CONCENTRE ALIMENTOS CONCENTRADOS Animal Feed Animals Blood Glucose - analysis Cattle - blood Circadian Rhythm dajl cows Delayed-Action Preparations Energy Intake Fatty Acids, Nonesterified - blood Female GENISSE Growth Hormone - administration & dosage Growth Hormone - blood Growth Hormone - pharmacology HORMONAS PITUITARIAS HORMONE HYPOPHYSAIRE hormones Hormones - blood Hydroxybutyrates - blood INJECTION Insulin-Like Growth Factor I - analysis INSULINA INSULINE INYECCION METABOLITE metabolites METABOLITOS METHODE D'APPLICATION METODOS DE APLICACION NOVILLA PLASMA SANGUIN PLASMA SANGUINEO Recombinant Proteins - administration & dosage Recombinant Proteins - pharmacology RENDEMENT LAITIER RENDIMIENTO LECHERO somatotropin TRIIODOTHYRONINE Triiodothyronine - blood TRIIODOTIRONINA VACAS LECHERAS VACHE LAITIERE
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