Short communication, Note

Superovulatory response and pregnancy after interspecies transfer of embryos in semi-wild Dulong (Bos frontalis).

Zhan Xing He ; The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan; Yunnan Academy of Grassland and Animal Science, Kunming, Yunnan, China
Yoko Sato ; The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
Ji Cai Zhang ; Yunnan Academy of Grassland and Animal Science, Kunming, Yunnan, China
Bi Zhi Huang ; Yunnan Academy of Grassland and Animal Science, Kunming, Yunnan, China
Manita Wittayarat ; The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
Masayasu Taniguchi ; The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
Tatsuyuki Suzuki ; The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
Takeshige Otoi ; The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan

Abstract

This study was conducted to examine the superovulatory response in semi-wild Dulong cows (Bos frontalis) and to evaluate whether their embryos can be maintained in pregnancy after interspecies transfer to cross-bred recipients (Bos taurus). Embryos were recovered from five Dulong and nine Red Angus (control) donors after superovulatory treatment. The average numbers of corpora lutea, collected ova and transferable embryos in Dulong donors were similar to those in Red Angus donors. The embryos from Dulong donors were transferred to three cross-bred recipients, two of which became pregnant. However, one embryo was lost between the 40th and 60th day of gestation. The second was lost between the 60th and 90th day of gestation. In Red Angus cows, 44.4% (4/9) of the recipients which received embryos became pregnant, and three delivered calves. We confirmed that Dulong cows respond to superovulatory treatment. Interspecies transfer of Dulong embryos into cross-bred recipients produced pregnancies, but not live offspring.

Keywords

interspecies; embryo transfer; mithun; superovulation; wild animal

Hrčak ID:

119052

URI

https://hrcak.srce.hr/119052

Publication date:

31.3.2014.

Article data in other languages: croatian

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