Effect of supplementary feeding on physiological, hormonal and blood responses of Santa Ines, Ile de France and Texel ewes/Efeito da suplementacao alimentar nas respostas fisiologicas, hormonais e sanguineas de ovelhas Santa Ines, Ile de France e Texel

We evaluated the supplemental protein (12% crude protein (CP) (T1) and 16% CP (T2)) in rectal temperature (RT), respiratory rate (RR) and heart rate (HR), glucose (Gl), albumin (Alb), total protein (TP), triiodothyronine (T3) and thyroxine (T4) in 16 Santa Ines, 16 Texel and 15 Ile de France ewes. The RR was not differing in T1 and T2 in Santa Ines and Ile de France, being higher in Texel in T2. FR increased in the spring, in the Texel, followed by Ile de France and Santa Ines, and decreased in fall in Santa Ines and Ile de France. RR was higher in the afternoon, in the Texel, in Ile de France and Santa Ines. Higher HR in Santa Ines and Texel in T1, and smaller in Ile de France. HR in Santa Ines was higher in the seasons, and spring higher for all breeds. Greater Gl, TP, Alb and T3 in Santa Ines, and equal for Texel and Ile de France. T3 higher for the Santa Ines in the winter; in Texel higher in winter and spring; no differences for Ile de France. Gl, T3 and T4 were similar for T1 and T2, and PT and Alb were higher in T2. Key words: diet, protein, weather conditions, heat stress, hormones, sheep. Avaliou-se a suplementacao de proteina (12% de proteina bruta (PB) (T1) e 16% de PB (T2)) na temperatura retal (TR), frequencias respiratoria (FR) e cardiaca (FC), glicose (Gl), albumina (Alb), proteinas totais (PT), triiodotironina (T3) e tiroxina (T4) de 16 ovelhas Santa Ines, 16 Texel e 15 Ile de France. A FR nao diferiu no T1 e T2 na Santa Ines e Ile de France, sendo maior na Texel no T2. FR aumentou na primavera, na Texel, seguida da Ile de France e pela Santa Ines e caiu no outono para Santa Ines e Ile de France. FR foi maior a tarde, na Texel, na Ile de France e na Santa Ines. Maior FC na Santa Ines e Texel no T1 e menor na Ile de France. FC na Santa Ines foi superior nas estacoes do ano, e na primavera maior para todas as racas. Maior Gl, PT, Alb e T3 na Santa Ines, e iguais para Texel e Ile de France. T3 maior na Santa Ines no inverno; na Texel maior no inverno e primavera, sem diferencas para Ile de France. Gl, T3 e T4 iguais no T1 e T2, e a PT e Alb maiores no T2. Palavras-chave: dieta, proteina, condicoes climaticas estresse termico, hormonios, ovelhas.