Evaluation of a superovulation protocol for embryo transfer in Creole ewes from the Guerrero Mountain
Keywords:
transferAbstract
In order to evaluate the response of Creole ewes from the Mountain of Guerrero state to a Multiple
Ovulation and Embryo Transfer (MOET) protocol, a study was carried out at the Colegio Superior
Agropecuario del Estado de Guerrero (CSAEGRO), located in Cocula, Gro., at 18º 15’ 26’’ North
Latitude. Six Creole ewes were utilized as donors and 18 Pelibuey sheep as recipients. Receivers had
for 11 d an intravaginal device containing progesterone, plus an intramuscular injection of 200 IU of eCG
when the device was removed. Donors received a superovulation protocol that consisted of the
intramuscular administration of 200 mg of FHS-P in decreased doses that started 4 d before the device
removal. Embryo collection was carried out 6 days after the last mating. Descriptive statistics were used.
Superovulation rate, number of corpora lutea and of transferable embryos collected from donor ewes
were 50 %, 4.3 ± 5.2, 2.2 ± 2.5, respectively, whereas that the fertility rate registered in the recipient
sheep was 50%: The response of donors to hormonal protocol evaluated for superovulation was low
and variable, while in the recipient the fertility rate was moderated.
References
AKÉ-LÓPEZ JR, Heredia AM, Alfaro GM, Centurión CF, Rojas RO. Efecto de la
hormona en la respuesta superovulatoria y de la sincronía del estro en el porcentaje
de gestación de oveja Pelibuey. Vet. Méx. 2003; 34: 225-233.
BRUNO-GALARRAGA MM, Cueto M, Gibbons AE, Pereyra-Bonnet F, Catalano R,
González-Bulnes. Repeatability od superovulatory response to successive FSH
treatments in Merino sheep. Small Ruminant Research. 2014
http://dx.doi.prg/10.106/j.smallrumres.2014.04.002.
COGNIE Y. State of the art inthe sheep-goats embryo transfer. Theriogenology. 1999;
: 171-188.
FAO. The state of the world’s animal genetic resources for food and agricultura. Ed.
Barbara Rischkowsky y Dafydd Pilling, Roma, Italy. 2007; 511 p
GARCÍA ME. Modificaciones al Sistema de Clasificación Climática de Köppen para
adaptarlo a las Condiciones de la República Mexicana, Instituto de Geografía,
Universidad Nacional Autónoma de México. 1973.
GONZALEZ-BULNES A, Baird DT, Campbell K, Cocero MJ, García-García RM,
Inskeep EK, López-Sebastián A, McNeilly AS, Santiago-Moreno J, Souza CJH, Veiga-
López A. Multiple factors affecting the efficiency of multiple ovulation and embryo
transfer in sheep and goats. Reprod. Fertil. Dev. 2004; 16: 421–435.
HERRERA C, Aké LR, Ku VJC, Williams GL, Quintal FJK. Respuesta ovulatoria,
estado de desarrollo y calidad de embriones de ovejas Pelibuey superovuladas
suplementadas con ácidos grasos polinsaturados. Téc. Pecu. Méx. 2008; 46: 107-117.
MARTÍNEZ RRD. El borrego “Obispo” de la Montaña de Guerrero. Elementos. 2016;
: 35-39.
MARTÍNEZ-ROJERO RD, Ulloa-Arvizu R, Reyna SL, Mastache LAA, Zarco QLA.
Estudio faneróptico de ovinos Criollos de la Montaña de Guerrero. Revista Mexicana
de Agroecosistemas. 2016a; 3 (Supl., 2): 30-33.
MARTÍNEZ-ROJERO RD, Mastache LAA, Ulloa-Arvizu R, Reyna-Santamaría L,
Zarco-Quintero LA, Mejía-Villanueva VO. Caracterización morfológica de dos
variedades de ovinos Criollos de la Montaña de Guerrero. Revista Mexicana de
Agroecosistemas. 2016b; 3 (Supl., 2): 34-36.
MARTÍNEZ-ROJERO RD, Ulloa-Arvizu R, Mastache LAA, Zarco QLA, Mejía VVO,
Reyna SL. Caracterización zoométrica de un rebaño de ovinos Criollos (“Obispo”) de
la Montaña de Guerrero. Revista Mexicana de Agroecosistemas. 2016c; 3 (Supl., 2):
-39.
MEDRANO JA. Recursos animales locales del centro de México. Arch. Zootec. 2000;
: 385-390.
MENCHACA A, Vilarino M, Crispo M, de Castro T, Rubianes E. New approaches to
superovulation and embryo transfer in small ruminants. Reprod. Fertil. Dev. 2010; 22:
–118.
QUIROZ J, Martínez A, Landi V, Zaragoza LM, Perezgrovas RG, Vega JP. Relación
genética de la raza ovina de Chiapas con algunas razas ovinas españolas. Archivos
de Zootecnia. 2007; 56: 441-447.
URBÁN-DUARTE D, Méndez-Gómez AC, Álvarez-Gallardo H, Pérez-Reynozo S,
Gordillo-Páez L, Pedraza-Villagómez JP, De la Torre-Sánchez JF. Revista Mexicana
de Agroecosistemas. 2016; 3 (Supl., 2): 119-122.
