Producción CyT
Congreso
Autoría
Lantermino A
;
Lapuente C
;
Corrada Y
;
BLANCO, PAULA GRACIELA
;
Gobello C
Fecha
2025
Editorial y Lugar de Edición
Wiley
Resumen
Información suministrada por el agente en
SIGEVA
Manipulation of the reproductive activity of the domestic cat (Felis silvetris catus) depends on a thorough understanding of the effect of exogenous light. The objective of this study was to test the reproductive effect of a prolonged short photoperiod (SP) in queens. Five 3 years of age, short—hair female cats were housed free in a windowless, enriched room of 15 m2 with LED lamps. Lightwas automatically provided with an intensity at cat's eye level of 250 luxes. After a 10:12 L/D a...
Manipulation of the reproductive activity of the domestic cat (Felis silvetris catus) depends on a thorough understanding of the effect of exogenous light. The objective of this study was to test the reproductive effect of a prolonged short photoperiod (SP) in queens. Five 3 years of age, short—hair female cats were housed free in a windowless, enriched room of 15 m2 with LED lamps. Lightwas automatically provided with an intensity at cat's eye level of 250 luxes. After a 10:12 L/D adaptation period of 3 months, the females were exposed to a SP of 6:18 L/D for 6 months. Thequeens underwent a reproductive follow-up which included 2 h per day observation of sexual behaviour (0,+,++), every other day vaginal cytology (> or < 80% superficial cells). The beginningand the end of the heats, defined as > + and > 80% superficial cells, were recorded. The findings of two time-windows (TW) of 3 months each were compared by Student's t and Chi2 tests. This project was approved by the institutional IACUC (123–3-22T). Overall number of days in heat (40.20 ± 9.80 vs. 54.40 ± 12.16; p > 0.1), the number of heats (8.00 ± 1.58 vs. 7.00 ± 0.63; p > 0.1) and the duration of those heats (5.16 ± 0.68 vs. 7.77 ± 1.44; p > 0.1) were not different between the first and second TW. Conversely, the intensity of the heats increased in the second TW (1.33 ± 0.03 vs. 1.53 ± 0.03; p < 0.01). Contrary to what was expected, reproductive cyclicity was maintained under 6 h of light per day. These results refute the previous feline paradigm that 8 h of light per day are insufficient for reproductive activity (1,2) and suggest the presence of an internal reproductive cycle as it has been described in ewes (3) and also hypothesised in cats. Further assessment of ovulatory capacity and fertility under this SP is guaranteed.
Ver más
Ver menos
Palabras Clave
OvaryPhotoperiodFemale catReproductive cycling