Influence of diet and ambient temperature on bovine serum insulin-like growth factor-I and thyroxine: relationships with non-esterified fatty acids, glucose, insulin, luteinizing hormone and progesterone

• Published in: Animal reproduction science Vol. 37; no. 3; pp. 267 - 279
• Main Authors: Richards, M.W., Spicer, L.J., Wettemann, R.P.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.02.1995
• Subjects: ACIDE GRAS; ACIDOS GRASOS; Cattle - endocrinology; COWS; DIET; DIETA; FACTEUR DE CROISSANCE IGF; FACTOR DE CRECIMIENTO IGF; FATTY ACIDS; GLUCOSA; GLUCOSE; Growth factors; INSULIN; INSULIN-LIKE GROWTH FACTOR; INSULINA; INSULINE; Luteinizing hormone; Nutrition; PROGESTERONA; PROGESTERONE; REGIME ALIMENTAIRE; TEMPERATURA; TEMPERATURE; THYROXINE; TIROXINA; VACA; VACHE; Cattle - endocrinology; Luteinizing hormone; Progesterone; Nutrition; Growth factors; Thyroxine

Multiparous, nonlactating, Hereford cows were fed maintenance (M; n = 11) or restricted (R; n = 11) diets for 41 weeks to evaluate changes in insulin-like growth factor-I (IGF-I) and thyroxine during the onset of nutritionally induced anoestrus and during realimentation. Cows had a moderate body con...