Essays about: "sire"

Showing result 16 - 20 of 21 essays containing the word sire.

  1. 16. Genetisk variation i spermakvalitet, och dess koppling till galtars fruktsamhet

    University essay from SLU/Dept. of Animal Breeding and Genetics

    Author : Torun Wallgren; [2011]
    Keywords : galt; fertilitet; spermiekvalitet; spermieegenskaper;

    Abstract : Det finns många faktorer som påverkar galtens ejakulatkvalitet, t.ex. genetisk bakgrund och miljöfaktorer. Om det finns ett samband mellan ejakulatets kvalitet och galtens verkliga fruktsamhet kan man lätt skilja på bra och dåliga galtar, och därmed sålla bort galtar med dålig fruktsamhet. READ MORE

  3. 17. Characterization of the global Brown Swiss cattle population structure

    University essay from SLU/Dept. of Animal Breeding and Genetics

    Author : Worede Gebremariam; [2010]
    Keywords : Inbreeding; population size; founder; ancestor; Brown Swiss;

    Abstract : The global Brown Swiss population was studied to estimate population genetic parameters, measure genetic variation and identify most influential animals. The population was found to have 3.30 mean equivalent complete generations. The mean inbreeding coefficient was 0. READ MORE

  4. 18. Inbreeding and its effect on fitness traits in captive populations of North Persian leopard and Mhorr gazelle

    University essay from SLU/Dept. of Animal Breeding and Genetics

    Author : Ana Marquiza M. Quilicot; [2009]
    Keywords : inbreeding depression; purging; leopard; gazelle; zoo animals;

    Abstract : In this study, linear mixed model analyses was conducted to assess inbreeding depression, purging and founder heterogeneity in relation to fitness traits (survival traits and litter size) in captive populations of North Persian leopard and Mhorr gazelle. “Old” and “new”, ancestral, partial and partial ancestral inbreeding coefficients were included in the models as finer scale measurements in addition to the classical inbreeding coefficient. READ MORE

  5. 19. A genetic study of summer eczema in Icelandic horses

    University essay from SLU/Dept. of Animal Breeding and Genetics

    Author : Louise Lindberg; [2006]
    Keywords : horses; genetics; heritability; culicoides; summer eczema; insect hypersensitivity;

    Abstract : Several horse breeds around the world have shown sensitivity to biting insects. The horses seem to be particularly sensitive to certain species of the genus Culicoides. The main reaction to the insects' bites is itchiness and some horses itch until wounds appear. READ MORE

  6. 20. Sperm morphology in progeny-tested Swedish AI dairy bull sires

    University essay from SLU/Dept. of Clinical Sciences

    Author : Anas Al-Makhzoomi; [2005]
    Keywords : sperm abnormalities; NRR; fertility estimates; SRB; SLB; bull;

    Abstract : Use of bull semen with high levels of sperm abnormalities, reflecting genital dysfunction, is not recommendable to use for AI since it most likely leads to subfertility. If sperm morphology deteriorates with age, it becomes a source of concern when using ageing progeny-tested AI-bull sires. READ MORE