Ovarian dynamics of buffalo ( Bubalus bubalis ) synchronized with different hormonal protocols
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Ovarian dynamics of buffalo (Bubalus bubalis) synchronized with different hormonal protocols Jorge Alonso Peralta-Torres 1 & Oswaldo Margarito Torres-Chablé 1 & José Candelario Segura-Correa 2 & Nadia Florencia Ojeda-Robertos 1 & Alfonso Juventino Chay-Canul 1 & Carlos Luna-Palomera 1 & Víctor Hugo Severino-Lendechy 3 & Jesús Ricardo Aké-Villanueva 4 Received: 14 February 2020 / Accepted: 10 September 2020 # Springer Nature B.V. 2020
Abstract The study evaluates the effect of three hormonal protocols on ovarian dynamics and progesterone (P4) secretion of buffalo (Bubalus bubalis). Twenty-nine pluriparous Murrah buffaloes were used. The protocols were as follows: OVSYNCH (n = 10): 100 μg of gonadorelin (day 0), 500 μg of cloprostenol (day 7), and 100 μg of gonadorelin (day 9). CIDR+EB (intravaginal device (CIDR®) + estradiol benzoate; n = 10): CIDR plus 2 mg of EB (day 0), withdrew of CIDR, 500 μg of cloprostenol (day 7) and 1 mg of EB (day 8). CIDR+eCG (n = 9): CIDR plus 2 mg of EB (day 0), withdrew of CIDR, 500 μg of cloprostenol and 400 IU of eCG (day 7). Follicles were counted with an ultrasound and measured at 0, 24, and 54 h. The maximum follicle diameter and ovulation were evaluated at 70, 80, and 94 h after CIDR withdrew. Estrous was detected per 1 h three times daily. Blood samples were collected on days 0, 7, 10, 15, and 22 to determine P4 concentration. In CIDR+EB protocol, 50% of buffaloes presented estrous, at 69.6 h. All buffaloes ovulated. CIDR+eCG group had the shortest (69 h) ovulation time. No treatment differences for follicular population, maximum follicle diameter, and P4 concentration on days 7 and 10 (P > 0.05) were found. The P4 concentration in OVSYNCH and CIDR+eCG protocols were > 1 ng/ml, on days 15 and 22 (P < 0.05). There was no difference in ovarian activity; however, the P4 secretion was normal in the OVSYNCH and CIDR+eCG protocols compared to the CIDR+ EB protocol. Keywords Estrous . Follicular population . Maximum follicle diameter . Ovulation . Progesterone
Introduction There has been a marked increase in the population of water buffalo (Bubalus bubalis) in Latin America in recent years
* Jorge Alonso Peralta-Torres [email protected]; [email protected] 1
División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Teapa Km. 25. R/A La Huasteca 2a Sección, CP 86280 Villahermosa, Tabasco, Mexico
2
Campus de Ciencias Biológicas y Agropecuarias, Universidad Autónoma de Yucatán, Carretera Xmatkuil Km. 15.5, Mérida, Yucatán, Mexico
3
Centro de Estudios Etnoagropecuarios, Universidad Autónoma de Chiapas, Blvd. Javier López Moreno S/N, San Cristóbal de las Casas, Chiapas, Mexico
4
Instituto Eloísa Patrón de Rosado, Licenciatura en Administración Ganadera, C. 17 # 101e, Col. Itzimná, Mérida, Yucatán, Mexico
(Zava 2013). Water buffaloes have been introduced into the hot and humid regions of Mexico, mainly in Veracruz, Tabasco, Chiapas, and Campeche states, because these entities have large wetland areas, which a
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