title: Estrous synchronization in captive collared peccaries (Pecari tajacu) using a prostaglandin F2α analog.
abstract: We verify the efficiency of a protocol for estrus synchronization in captive female collared peccaries (Pecaricari tajacu) using the prostaglandin analog D-cloprostenol. Five adult female collared peccaries received an intramuscular administration of 60 µg D-cloprostenol, which procedure was repeated after a 9-day interval. For 10 days after second the D-cloprostenol administration, females were monitored for changes in external genitalia, ovarian ultrasonography, vaginal cytology and reproductive hormonal dosage. As a result, four females synchronized their estrous at 9.5 ± 0.5 days after the second administration of the prostaglandin analog. Such females showed external signs of estrus, including vulvar opening, hyperemic vaginal mucosa, and vaginal mucus, concomitant with an increase in the proportion of superficial cells (52.2 ± 9.9%) verified through vaginal cytology. An estrogen peak of 22.7 ± 3.4 pg/ml was detected by hormonal dosage, and the presence of anechoic follicles measuring 0.29 ± 0.05 × 0.32 ± 0.07 mm were detected in the ovary by ultrasonography. Given these findings, we suggest that D-cloprostenol may be effective for use in estrus synchronization in collared peccaries.
authors.affiliation: Laboratory of Animal Germplasm Conservation - LCGA, Universidade Federal Rural do Semi-Árido - UFERSA, Mossoró, RN, Brazil.
authors.forename: Keilla Moreira
authors.initials: KM
authors.lastname: Maia
authors.forename: Gislayne Christianne Xavier
authors.initials: GC
authors.lastname: Peixoto
authors.forename: Lívia Batista
authors.initials: LB
authors.lastname: Campos
authors.forename: Andréia Maria da
authors.initials: AM
authors.lastname: Silva
authors.forename: Thibério de Souza
authors.initials: Tde S
authors.lastname: Castelo
authors.forename: Aracely Rafaelle Fernandes
authors.initials: AR
authors.lastname: Ricarte
authors.forename: Alexandre Rodrigues
authors.initials: AR
authors.lastname: Silva
mesh_terms: D000818:Animals; D001188:Artiodactyla; D003008:Cloprostenol / Q000494:pharmacology*; D030762:Estrous Cycle / Q000187:drug effects*; D004973:Estrus Synchronization / Q000379:methods*; D005260:Female
chemical_list: D003008:Cloprostenol
keywords: Tayassu tajacu; estrous signs; ultrasonography; vaginal cytology; wild pig