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There have been difficulties using particular methods of cryoconservation with certain species. For example, artificial insemination is more difficult in sheep than cattle, goats, pigs, or horses due to posterior folds in the cervix of ovines. [13] Cryopreservation of embryos is dependent on the species and the stage of development of the embryo.
Direct Frozen Embryo Transfer: Embryos can be frozen by SPF in ethylene glycol freeze media and transfer directly to recipients immediately after water thawing without laboratory thawing process. The world's first crossbred bovine embryo transfer calf under tropical conditions was produced by such technique on 23 June 1996 by Dr. Binoy S ...
Embryo transfer refers to a step in the process of assisted reproduction in which embryos are placed into the uterus of a female with the intent to establish a pregnancy.This technique - which is often used in connection with in vitro fertilization (IVF) - may be used in humans or in other animals, in which situations and goals may vary.
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The farm raises Red Sindhi cattle and Kangeyam cattle in order to "encourage pure breeding and to preserve native breeds." [7] The Farm has an embryo transfer laboratory. Embryos from Red Sindhi cows are collected by multiple ovulation and embryo transfer technology and are transferred to cross-bred recipient cows by non-surgical method.
Among the most notable achievements as a faculty member at Florida has been identifying embryokines (see embryokine) that regulate development of the preimplantation embryo, demonstrating sex-dependent developmental programming during the preimplantation period, understanding how elevated temperature compromises reproduction, development of ...
Artificial breeding via artificial insemination or embryo transfer is often used in sheep and cattle breeding to quickly expand, or improve purebred herds. Embryo transfer techniques allow top quality female livestock to have a greater influence on the genetic advancement of a herd or flock in much the same way that artificial insemination has ...
Adaptaur cattle are early maturing and of a medium size with a short dark red pigmented coat and good resistance to internal parasites. [1] Some Adaptaurs carry a gene that produces extremely high resistance to cattle ticks and the Australian Hereford Society is assisting to increase frequency of the gene by embryo transfer.