Thyroid and Lipid Status in Guide Dogs During Training: Effects of Dietary Protein and Fat Content

Animals

Biagina Chiofalo¹  Salvatore Cucinotta¹  Cristina Cravana¹  Esterina Fazio¹ 

[1] Department of Veterinary Sciences, University of Messina, Polo Universitario Annunziata, 98168 Messina, Italy;

关键词: guide dog;    dietary protein/fat ratio;    training;    thyroid hormones;    lipid panel;   

DOI  :  10.3390/ani9090597

来源: DOAJ

【 摘 要 】

Nutrition plays a leading role that most influences thyroid response and energetic metabolism. Aim was to compare the effect of diet on thyroid and lipid status in guide dogs during a 12-weeks training period. Eight Labrador Retrievers were divided into two groups homogeneous for sex, age, body weight, and Body Condition Score (BCS) and fed two commercial diets one, HPF, characterized by low-carbohydrate/high-protein/high-fat (29%:39%:19% as-fed) and the other, LPF, by high-carbohydrate/low-protein/low-fat (50%:24%:12% as-fed) content. The serum thriiodothyronine (T₃), thyroxine (T₄), cholesterol (CHOL), triglycerides (TAGs) and non-esterified fatty acids (NEFA) were determined at Day 0, 28, 56, and 84, before the daily training. Statistical model included the effects of Diet (HPF vs. LPF) and Time (Day 0 to Day 84), and their interaction. In the HPF group, Diet significantly (p < 0.01) increased T₄, CHOL, and TAGs and decreased NEFA. In both groups, Time significantly (p < 0.05) increased T₄ and TAGs, CHOL at Day 28, and NEFA at Day 56. The interaction did not influence serum hormones and lipid pattern. The adjustments in thyroid and lipid responses to moderate exercise in HPF group were driven mainly by the nutrient composition of the diet in relation to the involvement of metabolic homeostasis.

【 授权许可】

Unknown