کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8504203 | 1554330 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Embryo production by superovulation and dual siring in alpacas (Vicugna pacos)
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Embryo production by superovulation and dual siring in alpacas (Vicugna pacos) Embryo production by superovulation and dual siring in alpacas (Vicugna pacos)](/preview/png/8504203.png)
چکیده انگلیسی
Alpacas can only produce one offspring per year. In order to accelerate the genetic gain of a herd, superovulation and embryo transfer can be used to produce multiple embryos from superior females. We hypothesized that the use of dual siring with superovulation would result in the production of multiple embryos sired by different males. After administration of the superovulation protocol, receptive females were bred to two proven males (A and B) 8-12â¯h apart and ovulation was induced by gonadotropin at the time of the first breeding. Growth of multiple dominant follicles was successfully achieved in 95% of cycles. Females that were receptive after FSH treatment and were bred with both males (order A-B or B-A). Embryo collections were performed 8-9â¯days post-breeding on 15 cycles and 73% of collections recovered â¥1 embryo. A total of 46 embryos, were recovered for an average of 3.13 ±3.1 (range 0-10) embryos/flush. Parentage analysis was performed for 23 embryos (6 from A to B, 17 from B to A). Twenty-two of the 23 embryos were determined to be sired by male B, being six embryos from breeding A-B and 16 embryos from breeding B-A. A single embryo from breeding B-A was sired by male A. In conclusion, FSH administered at decreasing doses can be used to promote superovulation resulting in collection of multiple embryos per cycle. However, slight differences in male fertility may affect the frequency of embryos sired by each male.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Small Ruminant Research - Volume 162, May 2018, Pages 63-68
Journal: Small Ruminant Research - Volume 162, May 2018, Pages 63-68
نویسندگان
B.S. Forshey, C.R. Moraes, J. Lakritz, C.R.F. Pinto, E. Coffman, B.J. Schanbacher, N.J. Place, M.A. Coutinho da Silva,