Effect of estrus synchronization and GnRH on some serumic indices and pregnancy rate of Makui sheep during the breeding season

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Babazadeh Aghdam r.; MOGHADDAM GH.; DAGHIGHKIA H.; RAFAT S.A.; BAKHSHAYESH KHIABANI A.; MOGHADDAM S.

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Journal: VETERINARY CLINICAL PATHOLOGY (VETERINARY JOURNAL TABRIZ) Year:2018 | Volume:12 | Issue:3 (47) Page(s): 219-231

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Title

Effect of estrus synchronization and GnRH on some serumic indices and pregnancy rate of Makui sheep during the breeding season

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Keywords

Estrus synchronizationQ2

GnRHQ2

Blood serum indicesQ1

PregnancyQ2

SheepQ2

Abstract

Low Pregnancy rate is an important problem in livestock. Therefore it is possible to control the process of reproduction in animals by using synthetic hormones and increase the Pregnancy rate through Estrus synchronization. The aim of this study was to investigate the effect of GnRH on days 10, 11, and 12 after artificial insemination on Pregnancy rate of Makui Sheep breed. For this purpose, estrus was synchronized in 226 ewes using CIDR. After removing CIDR, all ewes received 400 IU PMSG. After two days, ewes in estrus were artificially inseminated with fresh sperms and divided into three groups. The control group did not receive any hormone. The second group was divided into subgroups D, E and Fwhich received 20 µ g GnRH on days 10, 11, and 12 after artificial insemination respectively. Finally, the third group or group G received 40 µ g GnRH on day 12 after artificial insemination. Blood samples (5 ml) were collected two days after GnRH injection by using vacuum tubes. The serumic concentrations of glucose, urea, total protein, phosphorus and progesterone were measured. To analyze the dependent and discrete variables, GLM and FREQ procedure of SAS software were used respectively. The results showed that the effect of GnRH on plasma concentration of progesterone was significant (p<0. 01). Maximum Pregnancy rate was achieved in the third group with a significant difference (p<0. 01) observed between this group and the other groups regarding Pregnancy rate. It can be concluded that injection of 40 µ g of GnRH hormone on day 12 after insemination improves Pregnancy rate in ewes.

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APA: Copy

Babazadeh Aghdam, r., MOGHADDAM, GH., DAGHIGHKIA, H., RAFAT, S.A., BAKHSHAYESH KHIABANI, A., & MOGHADDAM, S.. (2018). Effect of estrus synchronization and GnRH on some serumic indices and pregnancy rate of Makui sheep during the breeding season. VETERINARY CLINICAL PATHOLOGY (VETERINARY JOURNAL TABRIZ), 12(3 (47) ), 219-231. SID. https://sid.ir/paper/183199/en

Vancouver: Copy

Babazadeh Aghdam r., MOGHADDAM GH., DAGHIGHKIA H., RAFAT S.A., BAKHSHAYESH KHIABANI A., MOGHADDAM S.. Effect of estrus synchronization and GnRH on some serumic indices and pregnancy rate of Makui sheep during the breeding season. VETERINARY CLINICAL PATHOLOGY (VETERINARY JOURNAL TABRIZ)[Internet]. 2018;12(3 (47) ):219-231. Available from: https://sid.ir/paper/183199/en

IEEE: Copy

r. Babazadeh Aghdam, GH. MOGHADDAM, H. DAGHIGHKIA, S.A. RAFAT, A. BAKHSHAYESH KHIABANI, and S. MOGHADDAM, “Effect of estrus synchronization and GnRH on some serumic indices and pregnancy rate of Makui sheep during the breeding season,” VETERINARY CLINICAL PATHOLOGY (VETERINARY JOURNAL TABRIZ), vol. 12, no. 3 (47) , pp. 219–231, 2018, [Online]. Available: https://sid.ir/paper/183199/en

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