Essays about: "Frozen-thawed sperm"

Found 3 essays containing the words Frozen-thawed sperm.

  1. 1. Effects of melatonin and Single Layer Centrifugation on cryosurvival of ram semen samples

    University essay from SLU/Dept. of Clinical Sciences

    Author : Lea Enenkelová; [2021]
    Keywords : sheep reproduction; Jezersko-Solčava sheep breed; colloid centrifugation; melatonin;

    Abstract : The composition of the ram sperm membrane renders it vulnerable to injury during cryopreservation. Production of reactive oxygen species, which are by-products of metabolism, increases during freezing and thawing, causing damage to sperm membranes and acrosomes as well as affecting mitochondrial activity. READ MORE

  3. 2. The effect of antioxidants on motility, viability, acrosome integrity and DNA integrity of post-thaw epididymal cat spermatozoa

    University essay from SLU/Dept. of Clinical Sciences

    Author : Paweena Thuwanut; [2007]
    Keywords : Feline; Frozen-thawed sperm; Reactive oxygen species; Antioxidative enzyme; Non-enzymatic antioxidant;

    Abstract : Living cells stored under aerobic conditions require oxygen (O2) to support their metabolism. Their metabolite products are reactive oxygen species (ROS). In general, the ROS need to be continuously inactivated to keep a minimal amount necessary to maintain normal cell function but an excessive accumulation can cause cell damage. READ MORE

  4. 3. Deep freezing of concentrated boar semen for intra-uterine insemination

    University essay from SLU/Dept. of Clinical Sciences

    Author : Fernando Saravia Ramos; [2004]
    Keywords : spermatozoa; high sperm count artificial insemination AI doses; computer-assisted sperm analysis CASA ; flow cytometry; sHOST; boars;

    Abstract : Frozen-thawed (FT) boar semen for artificial insemination (AI) in commercial pig production is still only used in exceptional cases, mostly for incorporation of top genetics. Low sperm survival after a freezing procedure that is still considered suboptimal, which results in low farrowing rates and small litter sizes when conventional cervical AI is performed, are among the reasons why FT boar semen is rarely used in AI. READ MORE