Sökning: "ko srb"

Visar resultat 1 - 5 av 19 uppsatser innehållade orden ko srb.

  1. 1. Time budgets of dairy cows in cow-calf contact system with automatic milking

    Master-uppsats, SLU/Dept. of Animal Nutrition and Management

    Författare :Teresa Johansson; [2021]
    Nyckelord :Dairy cows; Time budget; AMS; Cow-calf contact;

    Sammanfattning : Time budgets of dairy cattle are useful to determine the amount of time the cows can allocate to all the behaviours throughout the day. In an automatic milking system (AMS), time budgets are of interest as the individuals are able to choose how to spend the majority of their time, besides the time in the milking robot, and can be used to ensure adequate amounts of time are spent on essential behaviours, such as lying and eating. LÄS MER

  3. 2. Composition and processability of milk from older cows : a pilot study on milk quality differences between young and old cows

    Master-uppsats, SLU/Department of Molecular Sciences

    Författare :Gabriella Apelthun; [2020]
    Nyckelord :Raw milk quality; lactation number; gel firmness; rennet coagulation time; Swedish Holstein; Swedish Red;

    Sammanfattning : Most Swedish dairy cow’s life expectancy is five years, which is 2.5 lactations. The most common reason for dairy cows being culled are e.g. LÄS MER

  4. 3. The digesta passage rate among dairy cows with different abilities to consume large quantities of roughage : its impact on the milk production, and the reliability of the chemical fibre marker

    Master-uppsats, SLU/Dept. of Animal Nutrition and Management

    Författare :Maria Elisabeth Eklund; [2020]
    Nyckelord :chemical markers; chromium; chromium mordanted fibre; cobalt; concen-trate level; EDTA; iNDF; mean re-tention time; ethylenediaminetetraacetic acid; forage consumption; indigestible neutral detergent fibre; liquid digesta phase; MRT; rumen evacuation; sol;

    Sammanfattning : The objectives of the present master thesis were to investigate the passage rate among lactating Holstein and Swedish red dairy cows to investigate the hypotheses of: 1) The cows’ individual total mean retention time (TMRT) has a negative relationship to the cows’ individual forage intake capacity. 2) A reduced TMRT contributes to a reduced feed efficiency, but a higher milk yield. LÄS MER

  5. 4. Validation of the role of a SNP in the VPS35 gene and its effect on non-co-agulating milk in Swedish Red Cattle

    Master-uppsats, SLU/Dept. of Animal Breeding and Genetics

    Författare :Gro Hylén; [2018]
    Nyckelord :VPS35; genotype; SNP; SR; cow; NC-milk; MCP; genomic selection;

    Sammanfattning : From earlier studies, it is clear that nearly 20 % of the Swedish red (SR) dairy herd possess milk that doesn’t coagulate within 40 minutes after rennet addition. This is a problem when processing milk into cheese because lower cheese yield is the result of non-coagulating (NC) milk. An estimate of 17. LÄS MER

  7. 5. Kalvningsintervallets betydelse för laktationen hos mjölkkor

    Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Clinical Sciences

    Författare :Johanna Olsson; [2018]
    Nyckelord :kalvningsintervall; mjölkavkastning; fertilitet; laktationskurva;

    Sammanfattning : Den genomsnittliga mjölkavkastningen hos svenska mjölkkor ökar för varje år. Inom mjölkproduktionen är ett vanligt ekonomiskt mål att försöka uppnå ett kalvningsintervall på 12-12,5 månader. LÄS MER