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 |