TY - JOUR
T1 - Cloprostenol effect with and without male stimulation on oestrus synchronization in Peru guinea pigs
AU - Roldan-Juárez, Jesús
AU - Pinares, Rubén
AU - Lozano, Franklin
AU - Machaca, Virgilio
AU - Quispe-Gutiérrez, Ulises S.
AU - Pizarro, Dante M.
N1 - Publisher Copyright:
© 2024 Wiley-VCH GmbH. Published by John Wiley & Sons Ltd.
PY - 2024/5
Y1 - 2024/5
N2 - Cloprostenol, a synthetic derivative of prostaglandin F2α, effectively triggers functional and morphological regression of the corpus luteum (luteolysis). In rural Peru, the guinea pig (Cavia porcellus) holds significance within the local economy and serves as a valuable protein source. Enhancing reproductive efficiency is crucial to achieve uniformity in weight, age, and litter size across commercial systems. Thus, our study aimed to evaluate the effect of cloprostenol with and without male stimulation on the onset, duration, and intensity of oestrus in Peru guinea pigs. A total of 128 guinea pigs (120 females and eight males) between 8 and 12 months of age, weighing between 800 and 1200 g, were distributed in cages of 15 females per treatment. Cloprostenol sodium (0 [control], 0.20, 0.25, and 0.30 mg/animal) was IM administered to the groups with and without male stimulation. Four isolated males in individual cages, different from the one used for the treatment, were considered to detect oestrus. The oestrus intensity was assessed by observing sexual behaviour signs such as restlessness, moaning, attempts to mount, pelvic elevation, loin stretching, and vulvar inflammation. The oestrus was manifested 2 days after the administration of cloprostenol sodium. At a dose of 0.30 mg/animal and with male stimulation, the earliest oestrus was observed at 46.9 h. There was a reduction in the oestrus duration (p <.05) in guinea pigs that received the three doses of cloprostenol sodium compared to the control group. The highest percentages of frank oestrus intensity (66.7%) were strongly associated with the administered doses of cloprostenol sodium (p <.01). In conclusion, the cloprostenol sodium administration was proper for rapid oestrus induction in Peru guinea pigs.
AB - Cloprostenol, a synthetic derivative of prostaglandin F2α, effectively triggers functional and morphological regression of the corpus luteum (luteolysis). In rural Peru, the guinea pig (Cavia porcellus) holds significance within the local economy and serves as a valuable protein source. Enhancing reproductive efficiency is crucial to achieve uniformity in weight, age, and litter size across commercial systems. Thus, our study aimed to evaluate the effect of cloprostenol with and without male stimulation on the onset, duration, and intensity of oestrus in Peru guinea pigs. A total of 128 guinea pigs (120 females and eight males) between 8 and 12 months of age, weighing between 800 and 1200 g, were distributed in cages of 15 females per treatment. Cloprostenol sodium (0 [control], 0.20, 0.25, and 0.30 mg/animal) was IM administered to the groups with and without male stimulation. Four isolated males in individual cages, different from the one used for the treatment, were considered to detect oestrus. The oestrus intensity was assessed by observing sexual behaviour signs such as restlessness, moaning, attempts to mount, pelvic elevation, loin stretching, and vulvar inflammation. The oestrus was manifested 2 days after the administration of cloprostenol sodium. At a dose of 0.30 mg/animal and with male stimulation, the earliest oestrus was observed at 46.9 h. There was a reduction in the oestrus duration (p <.05) in guinea pigs that received the three doses of cloprostenol sodium compared to the control group. The highest percentages of frank oestrus intensity (66.7%) were strongly associated with the administered doses of cloprostenol sodium (p <.01). In conclusion, the cloprostenol sodium administration was proper for rapid oestrus induction in Peru guinea pigs.
KW - animal reproduction
KW - Cavia porcellus
KW - oestrus stimulation
KW - ovulation
KW - prostaglandin F
UR - http://www.scopus.com/inward/record.url?scp=85191847194&partnerID=8YFLogxK
U2 - 10.1111/rda.14574
DO - 10.1111/rda.14574
M3 - Article
C2 - 38686570
AN - SCOPUS:85191847194
SN - 0936-6768
VL - 59
JO - Reproduction in Domestic Animals
JF - Reproduction in Domestic Animals
IS - 5
M1 - e14574
ER -