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  • Book
    G. Cliff Lamb, Nicolas DiLorenzo, editors.
    Summary: This book addresses the impacts of current and future reproductive technologies on our world food production and provides a significant contribution to the importance of research in the area of reproductive physiology that has never been compiled before. It would provide a unique opportunity to separate the impacts of how reproductive technologies have affected different species and their contributions to food production. Lastly, no publication has been compiled that demonstrates the relationship between developments in reproductive management tools and food production that may be used a reference for scientists in addressing future research areas. During the past 50 years assisted reproductive technologies have been developed and refined to increase the number and quality of offspring from genetically superior farm animal livestock species. Artificial insemination (AI), estrous synchronization and fixed-time AI, semen and embryo cryopreservation, multiple ovulation and embryo transfer (MOET), in vitro fertilization, sex determination of sperm or embryos, and nuclear transfer are technologies that are used to enhance the production efficiency of livestock species.

    Contents:
    Current and future assisted reproductive technologies for mammalian farm animals
    Current and future assisted reproductive technologies for avian species
    Current and future assisted reproductive technologies for fish species
    Incorporation of genetic technologies associated with applied reproductive technologies to enhance world food production
    Impacts of Reproductive Technologies on Beef Production in the United States
    Impact of Reproductive Technologies on Dairy Food Production in the Dairy Industry
    Impact of swine reproductive technologies on pig and global food production
    Impacts of reproductive technologies on beef production in South America
    An Australasian perspective on the role of reproductive technologies in world food production
    A perspective on the impact of reproductive technologies on food production in Africa
    International perspectives on impacts of reproductive technologies to world food production in Asia
    International perspectives on impacts of reproductive technologies to world food production in Asia associated with poultry production
    Beef Cattle in the Year 2050.
    Digital Access Springer 2014
    Access via Advances in experimental medicine and biology ; 2014 ; 752
    Location
    Version
    Call Number
    Items
    Advances in experimental medicine and biology ; 2014 ; 752
    2014
  • Article
    Blinks JR, Rüdel R, Taylor SR.
    J Physiol. 1978 Apr;277:291-323.
    1. Single twitch muscle fibres isolated from frogs and toads were microinjected with the Ca2+-sensitive bioluminescent protein aequorin. The fibres contracted normally and emitted flashes of light (aequorin responses) in response to stimulation for many hours thereafter. 2. No luminescence was detected from healthy fibres at rest. 3. The aequorin diffused from the site of injection at a rate consistent with a diffusion coefficient of 5 x 10(-8) cm2/sec. 4. During trains of isometric contractions there was a progressive reduction in both the amplitude and the rate of decline of the aequorin response, an observation consistent with the theory that Ca is redistributed from sites of release to sites of sequestration under such circumstances. 5. In isometric tetani light emission continued to rise long after the plateau of force had been achieved. This and the fact that the amplitude of the tetanic aequorin response increased steeply with increasing stimulus frequency suggest that in tetani the sarcoplasmic [Ca2+] may normally be above the level required to saturate the contractile apparatus. 6. Both in twitches and in tetani the amplitude of the aequorin response increased slightly and then decreased substantially as the fibre was stretched progressively beyond slack length. 7. In potassium contractures the luminescent and mechanical responses first became detectable at about the same [K+], but for equivalent force luminescence was less intense than in twitches. The aequorin response was biphasic in solutions of high [K+]. 8. Exposure of the fibre to Ca2+-free solutions had no influence on either the mechanical or the luminescent responses in twitches. In Ca2+-free solutions tetanic aequorin responses tended not to be maintained as well as normally, suggesting that intracellular Ca stores do become somewhat depleted. 9. In twitches the amplitude of the aequorin response probably reflects the amount of Ca2+ liberated into the cytoplasm rather than a [Ca2+] in equilibrium with the myofilaments. Changes in the rate of decay of the aequorin response may reflect changes in the rate of Ca sequestration by the sarcoplasmic reticulum. 10. In K+-contractures and during the plateaus of tetani the aequorin signal changes slowly enough so that it seems unlikely that substantial gradients of [Ca2+] exist at the sarcomere level. Under such circumstances the amplitude of the aequorin response probably does reflect the [Ca2+] in equilibrium with the myofilaments.
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