THE EFFECT OF LONG-TERM CIDR AND VETOCIDR EXPOSURE ON THE CONCENTRATION OF PROGESTERONE AND THE PERSISTENCE OF OVARIAN FOLLICLE IN HOLSTEIN CATTLE

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NAZEM Y.; NIASARI NASLAJI A.; ESLAMI MOHSEN; NIKJOU MAMAGHANI D.; REZAEIAN MOHAMMAD; MOUSAVI S.S.

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Journal: SCIENTIFIC-RESEARCH IRANIAN VETERINARY JOURNAL Year:2009 | Volume:5 | Issue:3 (24) Page(s): 60-69

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Title

THE EFFECT OF LONG-TERM CIDR AND VETOCIDR EXPOSURE ON THE CONCENTRATION OF PROGESTERONE AND THE PERSISTENCE OF OVARIAN FOLLICLE IN HOLSTEIN CATTLE

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Keywords

CIDRQ3

VETOCIDRQ3

ESTRUSQ3

PROGESTERONEQ3

OVARIAN FOLLICLEQ3

COWQ3

Abstract

CIDR is used in reproductive management of dairy herds. The purpose of this study was to investigate the long-term exposure of CIDR (imported) and VetoCIDR (Iranian made) on serum PROGESTERONE concentrations and persistence of OVARIAN FOLLICLE in Holstein cattle. Estrous cycle of Holstein COWs were synchronized using 2 injections of prostaglandin analogues, 14 days apart. On days 6-8 of ensuing cycle, all females received norgestomet implant and 2 prostaglandin injections 24hrs apart and were assigned into 3 experimental groups (n=4 in each group). On day 4 after norgestomet insertion, females received CIDR (EAZi Breed, New Zealand) and VetoC;IDR (Aburaihan, Iran). In the latter groups, norgestomet was removed 4 days after CIDR and VetoCIDR insertion. Females in control groups did not receive any further treatment and norgestomet remained in place throughout the experiment. Daily blood sampling for measuring PROGESTERONE using RIA and every four day ultrasonography for determining the persistence. of OVARIAN FOLLICLE were conducted. Changes in PROGESTERONE concentrations were assessed using repeated measures ANOVA. In control group, PROGESTERONE concentrations remained at the basal concentration and OVARIAN FOLLICLE became persistent throughout the expetiment. Changes in PROGESTERONE concentrations were similar in CIDR and VetoCIDR groups (P>0.05).Progesterone increased within 24hrs after the device insertion (P<0.05) and reduced gradually (P<0.05). During the 28 days after the device inseltion, none of the females in CIDR or VetoCIDR groups displayed ESTRUS and ovulation. Meanwhile, follicle growth and regression occurred regularity. In conclusion, there is no difference between CIDR and VetoCIDR in maintaining serum PROGESTERONE concentrations for 28 days.

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APA: Copy

NAZEM, Y., NIASARI NASLAJI, A., ESLAMI, MOHSEN, NIKJOU MAMAGHANI, D., REZAEIAN, MOHAMMAD, & MOUSAVI, S.S.. (2009). THE EFFECT OF LONG-TERM CIDR AND VETOCIDR EXPOSURE ON THE CONCENTRATION OF PROGESTERONE AND THE PERSISTENCE OF OVARIAN FOLLICLE IN HOLSTEIN CATTLE. SCIENTIFIC-RESEARCH IRANIAN VETERINARY JOURNAL, 5(3 (24)), 60-69. SID. https://sid.ir/paper/97206/en

Vancouver: Copy

NAZEM Y., NIASARI NASLAJI A., ESLAMI MOHSEN, NIKJOU MAMAGHANI D., REZAEIAN MOHAMMAD, MOUSAVI S.S.. THE EFFECT OF LONG-TERM CIDR AND VETOCIDR EXPOSURE ON THE CONCENTRATION OF PROGESTERONE AND THE PERSISTENCE OF OVARIAN FOLLICLE IN HOLSTEIN CATTLE. SCIENTIFIC-RESEARCH IRANIAN VETERINARY JOURNAL[Internet]. 2009;5(3 (24)):60-69. Available from: https://sid.ir/paper/97206/en

IEEE: Copy

Y. NAZEM, A. NIASARI NASLAJI, MOHSEN ESLAMI, D. NIKJOU MAMAGHANI, MOHAMMAD REZAEIAN, and S.S. MOUSAVI, “THE EFFECT OF LONG-TERM CIDR AND VETOCIDR EXPOSURE ON THE CONCENTRATION OF PROGESTERONE AND THE PERSISTENCE OF OVARIAN FOLLICLE IN HOLSTEIN CATTLE,” SCIENTIFIC-RESEARCH IRANIAN VETERINARY JOURNAL, vol. 5, no. 3 (24), pp. 60–69, 2009, [Online]. Available: https://sid.ir/paper/97206/en

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