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Seasonal Reproductive Activity of Domestic Queens ( Felis catus ) in the Tropics of Mexico
Author(s) -
OrtegaPacheco A,
ConchaGuillermo H,
SeguraCorrea J,
JimenezCoello M
Publication year - 2012
Publication title -
reproduction in domestic animals
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.546
H-Index - 66
eISSN - 1439-0531
pISSN - 0936-6768
DOI - 10.1111/rda.12051
Subject(s) - ovulation , estrous cycle , biology , tropics , zoology , follicular phase , pregnancy , ecology , endocrinology , genetics
Contents The objective of this study was to determine the seasonal ovarian activity of domestic queens under the tropical conditions of southern M exico (19° 30′ and 21° 35′ N latitude). A total of 250 reproductive tracts were evaluated, and the frequencies of queens with ovarian activity (oestrus, dioestrus or pregnant), anoestrus, pregnancies and ovulation rate by season of the year (spring, summer, autumn and winter) were calculated. Ovarian activity was observed throughout the year, but a significant reduction occurred during the winter; conversely, anoestrous cases were lower during spring and showed an increase during summer, autumn and winter. Pregnancies were most common during spring and decreased during summer, autumn and winter. Ovulation rate varied from 2.5 to 2.8 during the four seasons. Cystic endometrial hyperplasia, pyometra and ovarian follicular cysts were the most common lesions found. The results demonstrate that domestic queens are not seasonal in tropical conditions, but a clear effect of the season of the year reducing ovarian activity is present.