Essays about: "frozen semen"

Showing result 1 - 5 of 14 essays containing the words frozen semen.

  1. 1. Studier av genetisk bakgrund till nedsatt spermiekvalitet hos berner sennenhundar

    University essay from SLU/Dept. of Clinical Sciences

    Author : Martin Kläschen; [2022]
    Keywords : Berner sennen; fertilitet; spermiekvalitet; spermiemorfologi; kandidatgener; DNAH1; ARCM2; RNA;

    Abstract : Syftet med denna studie var att undersöka möjliga ärftliga faktorer till nedsatt spermiekvalitet hos berner sennenhundar i Sverige. I tidigare morfologiska studier av sperma från berner sennenhundar konstaterades att de har ett förhöjt antal svansdefekter jämfört med normalvariation för hundar. READ MORE

  3. 2. 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

  4. 3. Effect of seminal plasma on the acrosome status of cryopreserved stallion spermatozoa

    University essay from SLU/Dept. of Clinical Sciences

    Author : Michaela Toni; [2021]
    Keywords : acrosome; cryopreservation; artificial insemination; seminal plasma; spermatozoa; equine; stallion; “good freezer”; “bad freezer”; acrosome status; capacitation;

    Abstract : Today breeding through artificial insemination (AI) with cryopreserved semen is frequently used in several domestic species, but its use is more problematic in horses, partly because of reduced sperm quality and partly because the timing of insemination relative to ovulation is more crucial for frozen semen than for fresh. Therefore, improvements in the freezing technique are needed. READ MORE

  5. 4. Artificiell insemination och embryotransfer hos hund

    University essay from SLU/Dept. of Biomedical Sciences and Veterinary Public Health

    Author : Sofie Kieri; [2018]
    Keywords : assisterad reproduktionsteknologi; artificiell insemination; embryotransfer; hund;

    Abstract : Denna litteraturstudie syftar till att beskriva artificiell insemination (AI) och embryotransfer (ET) för hund. Den tar upp vad det finns för olika alternativ vid AI och jämför dessa med varandra. För ET är syftet att titta närmare på hur långt forskningen har kommit inom området och ta upp möjligheter och svårigheter med ET hos hund. READ MORE

  6. 5. The effect of the natural antioxidants catalase and epigallocatechin added after thawing on the quality of dromedary camel spermatozoa

    University essay from SLU/Dept. of Clinical Sciences

    Author : Johanna Grundin; [2018]
    Keywords : Camel semen; cryopreservation; antioxidants; reactive oxygen species; sperm quality analysis;

    Abstract : The objective of this study was to evaluate the effect of adding two natural antioxidants (Catalase and Epigallocatechin) to the thawing media on the quality of cryopreserved dromedary camel spermatozoa post-thaw. Also, an indirect measure of ROS production was performed by measuring malondialdehyde (MDA) production (a product of oxidative damage) post-thaw. READ MORE