Efeito dum protocolo de prostaglandina de curto prazo na sincronização e resultados reprodutivos em cabras cíclicas
Palavras-chave:
estação reprodutiva, sincronização de cio, prostaglandinasResumo
O objetivo do presente estudo foi avaliar a resposta reprodutiva de cabras cíclicas do norte do México
(26ºN) submetidas a dois protocolos de administração de prostaglandinas (PG; 5 dias vs 10 dias) para
sincronizar a resposta estral. Formaram-se dois grupos de cabras adultas cíclicas da raça Alpina Francesa.
O grupo G5 (n = 10) recebeu a primeira injeção de PG (0,2 ml; 160 μg de cloprostenol) em d -5 e o grupo
G10 (n = 10) recebeu a primeira injeção de PG em d -10. Ambos os grupos receberam a segunda injeção
de PG em d 0 (1º de novembro). A resposta reprodutiva geral após a segunda injeção de PG foi semelhante
(P> 0,05) entre os dois tratamentos. Resposta ao estro = 60% para ambos os grupos, latência ao estro =
68h vs 52h, ovulação = 80% vs 60% (G5 vs G10, respectivamente; P> 0,05). Como não houve diferenças
entre os grupos, a administração do tratamento G5 parece ser uma alternativa interessante ao uso dum
protocolo curto, uma vez que gerou uma importante resposta reprodutiva.
http://dx.doi.org/10.21929/abavet2021.14
e2020-65.
Referências
ABECIA JA, Forcada F, Gonzalez-Bulnes A. 2011. Pharmaceutical control of reproduction in sheep and goats. Veterinary Clinic of North America Food Animal Practice. 27: 67–79. https://doi.org/10.1016/j.cvfa.2010.10.001
AL YACOUB AN, Gauly M, Sohnrey B, Holtz W. 2011. Fixed-time deep uterine insemination in PGF2α -synchronized goats. Theriogenology. 76: 1730–1735. https://doi.org/10.1016/j.theriogenology.2011.07.005
CONTRERAS-VILLARREAL V, Meza-Herrera CA, Rivas-Muñoz R, Angel-Garcia O, Luna-Orozco JR, Carrillo E, Mellado M, Véliz-Deras FG. 2016. Reproductive performancee of seasonally anovular mixed-bred dairy goats induced to ovulate with a combination of progesterone and eCG or estradiol. Animal Science Journal. 87(6):750-5. https://doi.org/10.1111/asj.12493
FASS, 2010. Guide for the care and use of agricultural animals in agricultural research and teaching. 3rd Edition, FASS, Champaing, IL, USA. Pp. 177. ISBN: 978-1-7362930-0-3
FREITAS JVF, Rondina D, Lopes Junior ES, Teixeira DIA, Paula NRO. 2004. Hormonal treatments for the synchronization of oestrus in dairy goats raised in the tropics. Reproduction Fertility and Development. 16: 415-420. https://doi.org/10.1071/RD04031
GONZALEZ-BULNES A, Meza-Herrera CA, Rekik M, BenSalem H, Kridli RT. 2011. Limiting factors and strategies for improving reproductive outputs of small ruminants reared in semi-arid environments. In: Degenovine, K.M. (Ed.), Emi-arid Environments: Agriculture, Water Supply and Vegetation. Nova Science Publishers Inc., Hauppauge, NY, USA. Pp. 41–60 (Chapter 2) ISBN: 978-1-61761-541-2.
HOUGHTON JAS, Liberati N, Schrick FN, Townsend EC, Dailey RA, Inskeep EK. 1995. Day of estrus cycle affects follicular dynamics after induced luteolysis in ewes. Journal of Animal Science. 73(7):2094-2101. https://doi.org/10.2527/1995.7372094x
KUSINA NT, Chinuwo T, Hamudikuwanda H, Ndlovu LR, Muzanenhamo S. 2001. Effect of different dietary energy level intakes on efficiency of estrus synchronization and fertility in Mashona goat does. Small Ruminant Research. 39: 283-288. https://doi.org/10.1016/S0921-4488(00)00192-9
MAIA ALRS, Brandao FZ, Souza-Fabjan JMG, Balaro MFA, Oliveira MEF, Facó O, Fonseca JF. 2017. Reproductive parameters of dairy goats after reveiving two doses of d-cloprostenol at different intervals. Animal Reproduction Science. 181: 16-23. https://doi.org/10.1016/j.anireprosci.2017.02.013
MARTEMUCCI G, D’Alessandro AG. 2011. Induction-synchronization of oestrus and ovulation in dairy goats with different short-term treatments and fixed time intrauterine or exocervical insemination system. Animal Reproduction Science. 126: 187-194. https://doi.org/10.1016/j.anireprosci.2011.05.011
MEDAN MS, Watanabe G, Sasaki K, Sharawy S, Groome NP, Taya K. 2003. Ovarian dynamics and their associations with peripheral concentrations of gonadotropins, ovarian steroids, and inhibin during the estrous cycle in goats. Biology of Reproduction. 69: 57–63. https://doi.org/10.1095/biolreprod.102.013334
National Academy of Medicine. 2002. Guide for the care and use of laboratory animals. Co-produced by the National Academy of Medicine-Mexico and the Association for assessment and accreditation of laboratory animal care international. 1st. Edition, Harlan Mexico, DF, Mexico. ISBN-13: 978-0-309-15400-0
OMONTESE BO, Rekwot PI, Ate IU, Ayo JO, Kawa MU, Rwuaan JS, Nwannenna AI, Mustapha RA, Bello AA. 2016. An update on oestrus synchronization of goats in Nigeria. Asian Pacific Journal of Reproduction. 5: 96-101. https://doi.org/10.1016/j.apjr.2016.01.002
ROGER, PA. 2012. Welfare issues in the reproductive management of small ruminants. Animal Reproduction Science. 130(3-4):141-146.
https://doi.org/10.1016/j.anireprosci.2012.01.007
ROMANO JE, Alkar A, Amstalden M. 2016. Effect of copulation on estrus duration and ovulation time in goats. Theriogenology. 85(2):330-334. https://doi.org/10.1016/j.theriogenology.2015.09.021
RUBIANES E, Menchaca A, Carbajal B. 2003. Response of the 1-5 day-aged ovine corpus luteum to prostaglandin F2α. Animal Reproduction Science. 78(1-2):47-55.
https://doi.org/10.1016/S0378-4320(03)00046-0
SCHNEIDER RJ, Hallford DM. 1996. Use of a rapid progesterone radioimmunoassy to predict pregnancy and fetal numbers in ewes. Sheep and Goat Research Journal. 12: 33-38. https://agris.fao.org/agris-search/search.do?recordID=US1997067677
TITI HH, Kridli RT, Alnimer MA. 2010. Estrus synchronization in sheep and goats using combinations of GnRH, progestagen and prostaglandin F2α. Reproduction in Domestic Animals. 45: 594-599. https://doi.org/10.1111/j.1439-0531.2008.01309.x
VÁZQUEZ MI, Blanch MS, Alanis GA, Chaves MA, Gonzalez-Bulnes A. 2010. Effect of treatments with a prostaglandin analogue on developmental dynamics and functionality of induced corpora lutea in goats. Animal Reproduction Science. 118: 42–47. https://doi.org/10.1016/j.anireprosci.2009.05.016
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