Evaluation of reproductive performance in Torki-ghashghaie does using different protocols of estrus synchronization and artificial insemination during non-breeding season

Document Type : Research Paper

Authors

1 Fars Agriculture and Natural Resource Research Center

2 Assistant Professor, Animal Science Research Department, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Shiraz, Iran.

3 Researcher, Animal Science Research Department, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Shiraz, Iran.

4 Assistant Professor, Department of Animal Science, Fars Research center for Agriculture and Natural Resources, Shiraz, Iran

Abstract

This study was done to determine the most efficient estrus synchronization method for fixed timed artificial insemination of Torki-ghashghaie does during the non-breeding season. Treatment groups were: 1) CIDR; the animals were treated with intravaginal devices impregnated with 0.3 g of progesterone for 16 days. 2) Treatment 1 and IM injection of 400 IU eCG in CIDR removal. 3) Sponge; the does were treated with sponge impregnated with 40 mg flugestone acetate for 16 days. 4) Treatment 3 and IM injection of 400 IU eCG in sponge removal. 5) Implant; 1.5 mg norgestomet implant was inserted in subcutaneous ear for 10 days and injected IM with 1.5 mg norgestomet and 2.5 mg estradiul valerate in first day. 6) Treatment 5 and IM injection of 400 IU eCG in implant removal. 7) Two IM injection of 10 mg PGF2α eCG with 10 days interval and 8) Treatment 7 and IM injection of 400 IU eCG in tenth day. The injection of eCG was not effective on estrus response in progestagens base treatments, but increased significantly (p<0.05) fertility, kidding, fecundity and prolificacy rate in same treatments. The estrus response was the lowest in treatment 7 and it was significantly (p<0.05) lower in implant than CIDR and sponge with eCG injection. Finally it can be concluded that estrous synchronization with CIDR with eCG injection in Torki-ghashghaie ecotype does was superior under local conditions for fixed time artificial insemination.

Keywords

References

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Animal Sciences Journal
Volume 31, Issue 118
June 2018
Pages 15-22

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