Effects of growth-promoting agents and season on blood metabolites and body temperature in heifers1,2

To assess the efficacy of growth-promoting agents among seasons, triiodothyronine (T^sub 3^), thyroxine (T^sub 4^), plasma urea nitrogen (PUN), IGF-I, and tympanic temperature (TT) were measured in summer and winter studies. Heifers (n = 9/pen) were allotted to 12 pens in both December and June. Pen...

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Veröffentlicht in:	Journal of animal science 2006-04, Vol.84 (4), p.1030-1037
Hauptverfasser:	Mader, T. L., Kreikemeier, W. M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Blood Cattle Changes Chemicals Environmental conditions Plasma Samples Seasons Summer Thyroid gland Winter
Online-Zugang:	Volltext
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