Effect of genetic selection for milk yield and increased milking frequency on plasma growth hormone and prolactin concentration in Holstein cows

Fifty Holstein cattle, either second to fourth generation daughters of cows randomly bred to non-commercial sires originating in the Virginia Tech dairy herd (estimated mean PDM84 = -455 kg, control animals), or daughters of cows bred to commercially available sires (mean PDM84 = +368 kg, selection...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Journal of animal science 1986-10, Vol.63 (4), p.1220-1227
Hauptverfasser:	Kazmer, G.W, Barnes, M, Akers, R.M, Pearson, R.E
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals BOVIN LAITIER Breeding BREEDS Cattle - physiology COWS DAIRY CATTLE DATE (DE L'EVENEMENT) EPOCA Female GANADO DE LECHE Growth Hormone - blood HORMONAS HORMONAS PITUITARIAS HORMONE HORMONE HYPOPHYSAIRE HORMONES LACTACION LACTATION Lactation - drug effects MILK YIELD MILKING ORDENO PITUITARY HORMONES Pregnancy PROLACTIN Prolactin - blood PROLACTINA PROLACTINE RACE RAZAS RENDEMENT LAITIER RENDIMIENTO LECHERO SELECCION SELECTION Thyrotropin-Releasing Hormone - pharmacology TIMING TRAITE VACA VACHE
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Schreiben Sie den ersten Kommentar!