Biotechnological advances in goat reproduction.
Goat selection and reproduction have resulted from using conventional methods of natural mating and artificial insemination. Genetic improvements resulting from these are usually slow. Innovative developments in biotechnology rapidly propagate superior genes, offering hope for modeling and designing animals to fit market and environmental requirements. Use of Tris, citric acid, fructose, egg yolk, and glycerol extender has enabled goat sperm to be stored successfully for several years before being used in cervical or laparoscopic insemination. Laparoscopic recovery of goat embryos to reduce adhesions from repeat surgeries has great potential in improving embryo production for direct transfer or for future transfer after cryopreservation. Goat kids have been produced, as a result of experiments to refine techniques of in vitro maturation and fertilization of recovered oocytes, with successful culture and transfer of embryos. In vitro fertilization technology is also essential for cloning goat embryos and for gene transfer. Transgenic goats have already been produced due to new genes being expressed from biologically active molecules altering the phenotype of the transferred goat. The introduced gene is capable of transmission between generations. The goat's diversified commercial value and convenient size make it a benefactor to new technology for rapid genetic improvement as a supplement to conventional selection methods.
Amoah
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Agricultural Research Station, Fort Valley State University, GA 31030-3298, USA.
Gelaye
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D000818:Animals; D001709:Biotechnology / Q000379:methods* / Q000639:trends; D002678:Chimera; D003001:Cloning, Molecular; D004624:Embryo Transfer / Q000379:methods / Q000662:veterinary*; D005260:Female; D005298:Fertility / Q000502:physiology; D005307:Fertilization in Vitro / Q000379:methods / Q000662:veterinary*; D018014:Gene Transfer Techniques; D006041:Goats / Q000502:physiology*; D007315:Insemination, Artificial / Q000379:methods / Q000662:veterinary*; D008297:Male; D009865:Oocytes / Q000502:physiology; D012098:Reproduction / Q000502:physiology*; D012662:Semen Preservation / Q000379:methods / Q000662:veterinary; D012756:Sheep; D013081:Sperm Motility / Q000502:physiology; D014730:Veterinary Medicine / Q000379:methods*