Bengal leopard cat sperm bank for breeders

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Brian W. Davis, Christopher M. Seabury, Wesley A. The phenomenon of male sterility in interspecies hybrids has been observed for over a century, however, few genes influencing this recurrent phenotype have been identified. We also identified several candidate hybrid sterility regions on the X chromosome, with most residing in close proximity to complex duplicated regions. Differential gene expression analyses revealed significant chromosome-wide upregulation of X chromosome transcripts in testes of sterile hybrids, which were enriched for genes involved in chromatin regulation of gene expression.
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Crossbred cat embryos frozen in Siberia will save endangered species

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Crossbred cat embryos frozen in Siberia will save endangered species - Russia Beyond

Researchers hope that test tube crossbreeding will help save endangered feline species from extinction. For the first time ever scientists in Siberia have grown embryos of domestic cats that are crossbred with wild cats. One is a hybrid of a normal cat with the Far Eastern wildcat, which is on Russia's list of endangered animals. Until recently feline hybrids were obtained through natural coupling, but wild breeds were reluctant to mate with domesticated cats.
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Sumatran tiger sperm bank

In a crouching posture and with a sharp stare for any approaching figure, a tiger gave a loud roar audible some 10 meters away. Sperm deposit: An employee checks tubes specially designed to keep the sperm of Sumatran tigers for years. Discovered at the age of two, it is among those originally caught by local people in the forests of Sumatra. Some of them are old while others are physically impaired.
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Artificial Insemination in Farm Animals. In Artificial Insemination AI the semen is collected manually from a stud male and thereafter deposited inseminated in the female so that fertilization can occur in the absence of natural mating. Artificial Insemination, one of the earliest techniques for assisted reproduction in animals and humans, took longer to be implemented in dogs due to species-specific particularities.
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