Essays about: "mjölkraskorsningar"

Found 5 essays containing the word mjölkraskorsningar.

1. 1. Comparing crossbred and purebred dairy cows for economically important traits

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

   Author : Sofie Liedgren; [2022]
   Keywords : Crossbreed; Holstein; Montbéliarde; Jersey; Fertility; Production;

   Abstract : The use of dairy x dairy crossbreeding as a breeding strategy has increased in Sweden, which has led to an increase of Brown Swiss, Jersey and Montbéliarde crosses. Multiple studies have been done on Montbéliarde and Jersey crossbreds in the USA but to our knowledge, no such study has been done on Swedish data. READ MORE

3. 2. Calving ease and stillbirth in dairy herds using beef and dairy breed bulls

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

   Author : Patricia Gullstrand; [2017]
   Keywords : crossbreeding; dairy; beef; calving ease; stillbirth;

   Abstract : The aim of this study was to evaluate the effect of different sire breeds on calving traits when used in dairy herds. Records from 1,423,851 calvings from 1990-2016 were collected from the Swedish milk recording scheme from Swedish Holstein, Red dairy cattle, Hereford, Charolais, Aberdeen Angus, Limousin and Simmental sires mated with Swedish Holstein, Red dairy cattle or crossbred dams. READ MORE

4. 3. Estimation of heterosis and performance of crossbred Swedish dairy cows

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

   Author : Rebecka Jönsson; [2015]
   Keywords : breed group effect; heterosis; crossbreeding; dairy cows; functional traits; production traits;

   Abstract : The heterosis effect and breed group effect of crossbreds between Swedish Holstein (SH) and Swedish Red (SRB) was estimated in this study. Observations on cows born between 1990 and 2012 were used to estimate the heterosis effect and breed group effect for several traits included in the Nordic breeding goals: production, fertility, udder health, calving performance, survival and other diseases. READ MORE

5. 4. Mjölkraskorsningar i avelsvärdering av tillväxt hos svenska köttrastjurar

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

   Author : Ola Thomsson; [2010]
   Keywords : köttras; avelsvärdering; korsningar; genotyp miljö;

   Abstract : .... READ MORE

6. 5. Nyttjande av korsningar i mjölkproduktionen

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

   Author : Magdalena Andersson; [2009]
   Keywords : produktion; mjölkraskorsningar; funktionella och produktionsmässiga egenskaper; heterosiseffekter ;

   Abstract : Farmers’ main reason for crossbreeding dairy cows is that they have seen a decline in functional traits, especially in the Holstein breed. Throughout crossbreeding, the farmers can combine functional and production traits of different dairy breeds and utilize the heterosis effects which emerge when two or more breeds are crossed. READ MORE