Avaliação do estresse hipertérmico de ovelhas gestantes das raças Dorper, Santa Inês e suas mestiças em clima tropical com base nos níveis sorológicos de Triiodotironina (T3) e Tiroxina (T4 Total) / Evaluation of the stress head stress sheep pregnant of the breeds Dorper, Santa Inês and their mixed in a tropical climate based on the serological levels of Triiodotironina (T3) and Thyroxine (T4 Total)

The study objectify to evaluate the adaptability of pregnant sheep of the Dorper, Santa Ines and mixed(Dorper ½ ½ Santa Ines) to the tropical climate through serologic possible modifications of triiodothyronine(T3) and thyroxine (T4). The experiment was conducted at Malhada Vermelha farm in Lagoa Alegre - PI, 21sheep were used in gestational middle third, 7 of Dorper, 7 Santa Ines and 7 mixed (Dorper x Santa Ines), all insatisfactory clinical conditions and under the same management conditions. These were evaluated respiratoryrate, rectal temperature and collected blood samples for hormone dosage four times in each climatic periodMarch, July and October. Later they were measured Thyroxine (Total T4) and triiodothyronine (T3) by ELISA.T3 dosages remained within the normal range for the species, while T4 was below. It was concluded that themost adapted breed is Santa Ines.(AU)

Avaliação do estresse hipertérmico de ovelhas gestantes das raças Dorper, Santa Inês e suas mestiças em clima tropical com base nos níveis sorológicos de Triiodotironina (T3) e Tiroxina (T4 Total) / Evaluation of the stress head stress sheep pregnant of the breeds Dorper, Santa Inês and their mixed in a tropical climate based on the serological levels of Triiodotironina (T3) and Thyroxine (T4 Total)

The study objectify to evaluate the adaptability of pregnant sheep of the Dorper, Santa Ines and mixed(Dorper ½ ½ Santa Ines) to the tropical climate through serologic possible modifications of triiodothyronine(T3) and thyroxine (T4). The experiment was conducted at Malhada Vermelha farm in Lagoa Alegre - PI, 21sheep were used in gestational middle third, 7 of Dorper, 7 Santa Ines and 7 mixed (Dorper x Santa Ines), all insatisfactory clinical conditions and under the same management conditions. These were evaluated respiratoryrate, rectal temperature and collected blood samples for hormone dosage four times in each climatic periodMarch, July and October. Later they were measured Thyroxine (Total T4) and triiodothyronine (T3) by ELISA.T3 dosages remained within the normal range for the species, while T4 was below. It was concluded that themost adapted breed is Santa Ines.