Perinatal concentrations of 17β-estradiol and testosterone in the toe claws of female and male dogs from birth until 60 days of age

This study was conducted to assess concentrations of 17β-estradiol (E2) and testosterone (T) in toe claws of puppies collected at birth, at 30 and at 60 days of age, evaluating changes relating to age and effect of puppy sex, Apgar score, bodyweight at birth, “litter effect”, litter size, and matern...

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Bibliographic Details
Published in:Animal reproduction science 2020-03, Vol.214, p.106313-106313, Article 106313
Main Authors: Fusi, J., Comin, A., Faustini, M., Prandi, A., Veronesi, M.C.
Format: Article
Language:English
Subjects:
Animals
Animals, Newborn - metabolism
Dog
Dogs - physiology
Estradiol - chemistry
Estradiol - metabolism
Female
Hoof and Claw - chemistry
Male
Perinatology
Sex steroids
Testosterone - chemistry
Testosterone - metabolism
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Summary:This study was conducted to assess concentrations of 17β-estradiol (E2) and testosterone (T) in toe claws of puppies collected at birth, at 30 and at 60 days of age, evaluating changes relating to age and effect of puppy sex, Apgar score, bodyweight at birth, “litter effect”, litter size, and maternal age. Puppies (n = 89), 46 males and 43 females, with normal weight and without malformations, were assigned for the study. Within 12 h of birth tips of toe claws were clipped, and the re-growth tissue of the claws was collected at 30 and 60 days of age. Steroid quantifications occurred using a radioimmunoassay. The results indicated there were lesser concentrations (P 
ISSN:0378-4320
1873-2232
DOI:10.1016/j.anireprosci.2020.106313