Ovarian and Oocyte Morphology During the Spring-Summer and Fall-Winter in Queens (Felis catus) Kept in a Tropical Climate

Laiza Sartori de Camargo; Guilherme Rizzoto; Jaqueline Candido de Carvalho; Karym Christine de Freitas Cardoso; Denise Cláudia Tavares; Valéria Amorim Conforti; Cristiane Dos Santos Honsho; Fabiana Ferreira de Souza

doi:10.1016/j.tcam.2021.100510

Ovarian and Oocyte Morphology During the Spring-Summer and Fall-Winter in Queens (Felis catus) Kept in a Tropical Climate

Top Companion Anim Med. 2021 Jun:43:100510. doi: 10.1016/j.tcam.2021.100510. Epub 2021 Jan 9.

Authors

Laiza Sartori de Camargo¹, Guilherme Rizzoto², Jaqueline Candido de Carvalho¹, Karym Christine de Freitas Cardoso³, Denise Cláudia Tavares⁴, Valéria Amorim Conforti⁵, Cristiane Dos Santos Honsho⁶, Fabiana Ferreira de Souza⁷

Affiliations

¹ Departament of Veterinary Sugery and Animal Reproduction, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil.
² Faculty of Veterinary Medicine, Department of Production Animal Health, University of Calgary, Calagary, Canada.
³ Autonomous Veterinarian, São Paulo, Brazil; Veterinary Hospital, Universidade de Franca (UNIFRAN), Franca, Brazil.
⁴ Veterinary Hospital, Universidade Paulista, UNIP, Bauru, Brazil.
⁵ Instituto Pró-Carnívoros, Atibaia, Brazil.
⁶ Veterinary Hospital, Universidade de Franca (UNIFRAN), Franca, Brazil.
⁷ Departament of Veterinary Sugery and Animal Reproduction, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil. Electronic address: fabiana.f.souza@unesp.br.

PMID: 33434680
DOI: 10.1016/j.tcam.2021.100510

Abstract

The objective of this study was to investigate the effects of seasonality and phase of the estrous cycle on ovarian and oocyte morphology in domestic cats kept in a tropical region. The ovaries from 23 queens were collected after elective ovariohysterectomy at different stages of the estrous cycle and were classified according to the season upon collection (spring/summer vs. fall/winter). Based on the findings, we concluded that queens in tropical regions experience no seasonal influence on oocyte quality, but there is a minimal effect on ovarian morphology, with an increase in ovarian length during proestrus/estrus in the spring/summer period.

Keywords: estrous cycle; feline; seasonality.

MeSH terms

Animals
Cats* / physiology
Estrous Cycle
Female
Oocytes* / physiology
Ovary* / physiology
Seasons
Tropical Climate*