Essays about: "cow and lactation."

Showing result 41 - 45 of 109 essays containing the words cow and lactation..

  1. 41. Can methods of machine learning be used to betterpredict lactation curves for bovines?

    University essay from Uppsala universitet/Statistiska institutionen

    Author : Andreas Östling; [2017]
    Keywords : random forest; lactation curves;

    Abstract : A random forest is compared to an OLS model for predicting lactation curves for cows.Both of the methods have been estimated and tested using data from the period 2015-01 to2015-09. Random forests outperform OLS in testing for modeling lactation curves with adecrease in MSE by approximately 26%. READ MORE

  3. 42. Olika utfodringssystem till mjölkkor i Hallands län

    University essay from SLU/Dept. of Animal Nutrition and Management

    Author : Hanna Berntsson; [2017]
    Keywords : fullfoder; ; blandfoder; ; individuell utfodring; TMR; ; PMR; ; individual feeding;

    Abstract : ABSTRACT When investing in a new feeding system there are both advantages and disadvantages, and there are a lot of opinions about the systems excellence. In this study, I compared Total Mixed Ration (TMR), Partly Mixed Ration (PMR) and individual feeding at 15 dairy farms located in Halland, the southwest parts of Sweden. READ MORE

  4. 43. Grovfodrets partikelstorlek och dess inverkan på konsumtion och foderutnyttjande hos mjölkkor

    University essay from SLU/Dept. of Animal Nutrition and Management

    Author : Emma Elgemark; [2017]
    Keywords : torrsubstansintag; tuggning; idissling; salivproduktion vommiljö; buffring;

    Abstract : Grovfoder i form av gräs, majs eller baljväxter är den viktigaste komponenten i mjölkkors foderstat då det bidrar till att upprätthålla en normal vomfunktion. Grov-foder stimulerar tuggning och idissling som reducerar grovfodrets partikelstorlek, vil-ket krävs för att fodret ska kunna passera genom vommen. READ MORE

  5. 44. Blandfoder eller separat utfodring till mjölkkor i AMS med fri kotrafik

    University essay from SLU/Dept. of Animal Nutrition and Management

    Author : Hanna Driscoll; [2017]
    Keywords : foderintag; mjölkavkastning; mjölkningsfrekvens; automatisk mjölkning; grovfoderkonsumtion;

    Abstract : The aim of the study was to compare two feeding strategies, partial mixed ration (PMR) and separate feeding (SR) of grass/clover silage and concentrate, and find out how feed intake, milking frequency and milk production was affected when the cows were milked in an automatic milking system (AMS) with free cow traffic. The study included 38 cows in early to mid lactation divided into two groups fed PMR or SR and lasted for ten weeks. READ MORE

  6. 45. Swedish native mountain cattle and their milk proteins : conventional compared to pasture operated farming for indoor and outdoor period

    University essay from SLU/Dept. of Food Science

    Author : Camilla Claesson; [2016]
    Keywords : whey; casein; bovine; capillary electrophoresis; cow;

    Abstract : Swedish native mountain cattle are a small breed from northern part of Sweden. They have existed as a breed since before the 1900-century. 1896 it was decided that one feature should be selected: hornless and white with black or brown features. The breed represents 0. READ MORE