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The effect of equine chorionic gonadotrophin (ecg) injection combined with prostaglandin F2α (pGF2α) and gonadotrophin releasing hormone (GnRH) treatment on reproductive performance of Zandi ewes during non-breeding season

Publish place: Archives of Razi Institute journal، Vol: 71، Issue: 4
Publish Year: 1395
Type: Journal paper
Language: English
View: 125

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Link to this Paper:
https://civilica.com/doc/1868736

Document National Code:

JR_ARCHRAZI-71-4_007

Index date: 27 December 2023

The effect of equine chorionic gonadotrophin (ecg) injection combined with prostaglandin F2α (pGF2α) and gonadotrophin releasing hormone (GnRH) treatment on reproductive performance of Zandi ewes during non-breeding season abstract

In this study, we aimed to investigate reproductive performance in estrus-induced Zandi ewes treated with equine chorionic gonadotrophin (eCG) injection in combination with prostaglandin F2α (PGF2α)and gonadotrophin releasing hormone (GnRH) during non-breeding season. The estrous cycle was synchronized using controlled internal drug release (CIDR) for 12 days. The ewes were randomly assigned to five groups (n=100 in each group). The first group (control) did not receive hormone injection, the second group (eCG) received 400 IU of eCG at the time of CIDR removal, the third group (eCG+PGF2α) received 400 IU of eCG and 1 ml of PGF2α at the time of CIDR removal, the fourth group (eCG+GnRH) received 400 IU of eCG at the time of CIDR removal and 1 ml of GnRH injection on the day of insemination, and the fifth group (eCG+PGF2α+GnRH) received 400 IU of eCG, 1 ml of PGF2α at the time of CIDR removal, and 1 ml of GnRH on the day of insemination. The results showed that the heat response rate was higher in all the groups receiving hormonal injections compared with the control group (P<0.05). In addition, the lambing and parturition rateswere significantly (P<0.05) higher in the groups receiving GnRH compared with other treatments.In fact, in groups receiving eCG and PGF2α, lambing and parturition rateswere higher than the control group (P>0.05). In conclusion, use of eCG at the time of CIDR removal and GnRH on the day of insemination increased reproductive performance. Therefore, it can be applied as a strategy for increasing lambing rate in ewes.

The effect of equine chorionic gonadotrophin (ecg) injection combined with prostaglandin F2α (pGF2α) and gonadotrophin releasing hormone (GnRH) treatment on reproductive performance of Zandi ewes during non-breeding season Keywords:

Lambing rate , eCG , GnRH , PGF2α , Zandi ewes

The effect of equine chorionic gonadotrophin (ecg) injection combined with prostaglandin F2α (pGF2α) and gonadotrophin releasing hormone (GnRH) treatment on reproductive performance of Zandi ewes during non-breeding season authors

A. Hosseinzadeh Aski

Department of Animal Science, Faculty of Veterinary, Islamic Azad University, Ghaemshahr Branch, Ghaemshahr, Iran

R. Masoudi

Department of Animal Science, Faculty of Agriculture and Natural Resources, University of Tehran, Karaj, Iran

A. Zare Shahneh

Department of Animal Science, Faculty of Agriculture and Natural Resources, University of Tehran, Karaj, Iran

S. Asadzadeh

Department of Animal Science, Faculty of Veterinary, Islamic Azad University, Ghaemshahr Branch, Ghaemshahr, Iran

E. Dirandeh

Department of Animal Science, Faculty of Agriculture, Sari University of Agricultural Sciences and Natural Resources, Sari, Iran

H. Sadeghipanah

Animal Science Research Institute, Karaj, Iran

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