Correlation between sperm parameters and circulating thyroid hormones and testosterone concentrations in Labrador Retriever dog

Thyroid hormones physiologically regulate the semen quality, by altering testosterone concentrations, and different seminal parameters, as well sperm motility, viability volume. Serum thyroxine (T4), free (fT4), thyroid-stimulating hormone (TSH) (T) concentrations were measured in 26 adult Labrador Retriever dogs (n. 20 normospermic n. 6 azoospermic groups), aged 3 ± 0.5 years old, to determine their specific references, taking into account related conventional kinematic parameters clinical ultrasound evaluations. The mean values of T4, fT4, TSH T soon those evaluations group line with dog’s physiological range literature data. Normospermic showed significant correlations between T4 (r = −0.681; p < .01), progressive motility (%) −0.623; non-progressive 0.625; .02). higher lower compared group, a positive correlation 0.8548; .046). use breed-specific hormonal ranges will improve knowledge interaction dogs, adding new segment scientific literature.HighlightsThyroxine thyroid stimulating male dogs.Conventional also evaluated.Dogs divided Retrivers.Azoospermic normospermicUse literature.