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4 results on '"Vieira, Catharina A"'

1. Estimated date of delivery in Chihuahua breed bitches, based on embryo-fetal biometry, assessed by ultrasonography

Author

Vieira, Catharina de Albuquerque, Bittencourt, Rodrigo Freitas, Biscarde, Carmo Emanuel Almeida, Fernandes, Maíra Planzo, Nascimento, Alessandro Bitencourt, Romão, Elton Amorim, Carneiro, Isabella de Matos Brandão, Silva, Mariana Alves de Andrade, Barreto, Renata Oliveira, and Loiola, Marcus Vinícius Galvão

Subjects
medicine.medical_specialty, canine, 03 medical and health sciences, 0302 clinical medicine, medicine, gestational age, Pregnancy, Fetus, 030219 obstetrics & reproductive medicine, General Veterinary, Obstetrics, business.industry, ultrasound, Ultrasound, 0402 animal and dairy science, Gestational age, Embryo, 04 agricultural and veterinary sciences, medicine.disease, 040201 dairy & animal science, Breed, Gestation, Original Article, Animal Science and Zoology, pregnancy, Ultrasonography, business
Abstract

Due to the peculiarities of the reproductive cycle of the female dog, which makes it difficult to accurately ascertain the date of conception, it may be challenging to precisely estimate the gestational age in bitches. Using fetal measurements obtained by ultrasound, it is possible to estimate the gestational age in dogs; however, due to the differences in size of the various breeds, such estimates may have a significant standard deviation, which represents less accuracy when specifying the date of birth. The purpose of this study was to evaluate pregnant female Chihuahuas, establishing relations between the fetal dimensions measured by ultrasound and the remaining time until delivery. Using 13 pregnant female Chihuahuas, weekly ultrasound assessments and measurements were performed, of the inner chorionic cavity, cranial-caudal length, biparietal diameter, abdominal diameter and thoracic diameter. Such parameters were retroactively correlated to the date of delivery, and linear regressions were established between the gestational measurements and remaining days until delivery. The fetal measurement presenting the highest correlation (r = 0.99; P

Published
2020

3. Estimated date of delivery in Chihuahua breed bitches, based on embryo-fetal biometry, assessed by ultrasonography

Author

Vieira, Catharina de Albuquerque, primary, Bittencourt, Rodrigo Freitas, additional, Biscarde, Carmo Emanuel Almeida, additional, Fernandes, Maíra Planzo, additional, Nascimento, Alessandro Bitencourt, additional, Romão, Elton Amorim, additional, Carneiro, Isabella de Matos Brandão, additional, Silva, Mariana Alves de Andrade, additional, Barreto, Renata Oliveira, additional, and Loiola, Marcus Vinícius Galvão, additional

Published
2020
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4. Quality of domestic cat semen collected by urethral catheterization after the use of different alpha 2-adrenergic agonists.

Author

Madrigal-Valverde, Mónica, Bittencourt, Rodrigo F, Ribeiro Filho, Antonio DL, Barbosa, Vivian F, Vieira, Catharina A, Romão, Elton A, Carneiro, Isabella B, Azevedo, Milena C, and Araujo, Gediendson R

Abstract

Objectives: We compared the effects of two alpha (α)2-adrenergic agonists on semen traits. Methods: In this study, 13 adult domestic cats were divided into two experimental groups, according to the chemical ejaculation protocol used: the first group received medetomidine hydrochloride (100 µg/kg) and ketamine (5000 µg/kg); the second group received dexmedetomidine hydrochloride (25 µg/kg) and ketamine (5000 µg/kg), both by the intramuscular route. Results: The animals responded positively (P >0.05) to chemical collection. Seminal parameters evaluated included volume, sperm vigor, total motility, progressive motility, sperm concentration, and the structural and functional integrity of the plasma membrane; sperm morphology values did not differ between groups (P >0.05). Conclusions and relevance: The results indicated that dexmedetomidine is a more viable and economical alternative to medetomidine in domestic cats submitted to semen collection by urethral catheterization. Semen collection by urethral catheterization after using α2-adrenergic agonists is a recently developed technique in feline species that is considered to be quick and highly applicable to assisted reproduction programs in felids. [ABSTRACT FROM AUTHOR]

Published
2021
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