Author/Editor		Krušič, L; Cestnik, V; Snoj, T; Pogačnik, A; Kobal, S; Pangos, S; Gatta, D
Title		T3 and T4 profile after TRH stimulation in Lipizzaner foals during the first year of life
Type		članek
Source		In: Cestnik V, Pogačnik A, editors. Referati 6. Zavrnikovega spominskega sestanka; 1995 nov 9-11; Lipica. Ljubljana: Veterinarska fakulteta,
Publication year		1997
Volume		str. 55-8
Language		eng
Abstract		Seven growing Lipizzaner foals participated in a 12 month nutritionaly balanced trial. TRH stimulation test (0.4 mg i/v per animal) was performed every three months and its effect was determined by the assessment of plasma thyroxin (T4) and triiodothyronine (T3) concentrations measured before and l, 3.5 and 4 hours after TRH administration. Plasma baseline values of T3 and T4 in foals at the age of 40-111 days were significantly higher (p<0.001 ) from the baseline values obtained in foals aged 136-207, 220-291 and 319-390 days, respectively. The highest T3 response was observed in the youngest foals at the age of 40-111 days. Plasma T4 concentration increased signifcantly 3.5 hours after TRH stimulation at the age of 40-111 days. Plasma T4 peak concentration differed significantly (p<0.05) between foals aged 40-111 days and those aged 319-390 days.The highest T4 response was also detected in the youngest foals at the age of 40-111 days. Results indicate the influence of age on T3 and T4 basal and response values in Lipizzaner foals.
Descriptors		THYROID HORMONES THYROTROPIN HORSES