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Description
  • Vliv systému placení mléka na ekonomické váhy a selekční zisk byl zkoumán u plemen holštýnské a české strakaté pro situaci s mléčnou kvótou a bez kvóty. Způsob placení mléka měl významný vliv na selekční zisk. Použití selekčního indexu sestaveného s ekonomickými vahami založenými na systému placení neodpovídající skutečnosti redukovalo ekonomický zisk ze selekce až o 51 % oproti zisku při použití odpovídajícího systému placení mléka. Ztráty na zisku byly vyšší za situace s kvótou než bez kvóty a byly vyšší u holštýnského skotu. Nesprávný předpoklad o existenci nebo absenci kvót při použití odpovídajícího systému placení mléka měl pouze malý vliv na celkový ekonomický selekční zisk (změny menší než 2%). (cs)
  • The impact of various milk pricing systems on the economic weights and the resulting selection responses for milk yield and fat and protein contents in Holstein and Czech Fleckvieh were investigated. The calculations were done for the situations with and without quotas. There was a substantial influence of the milk pricing system on the selection response. The use of index weights based on a “wrong” pricing system reduced the total economic selection response by up to 51% of the selection response expected for an index based on the “correct” pricing system. Financial losses in the selection response were greater with quotas than without quotas. Higher losses were also calculated for Holstein compared with Czech Fleckvieh. Incorrect assumptions on the output limitation led only to minor reductions in the total selection response (mostly less than 2%) if the other parameters were correct.
  • The impact of various milk pricing systems on the economic weights and the resulting selection responses for milk yield and fat and protein contents in Holstein and Czech Fleckvieh were investigated. The calculations were done for the situations with and without quotas. There was a substantial influence of the milk pricing system on the selection response. The use of index weights based on a “wrong” pricing system reduced the total economic selection response by up to 51% of the selection response expected for an index based on the “correct” pricing system. Financial losses in the selection response were greater with quotas than without quotas. Higher losses were also calculated for Holstein compared with Czech Fleckvieh. Incorrect assumptions on the output limitation led only to minor reductions in the total selection response (mostly less than 2%) if the other parameters were correct. (en)
Title
  • Impact of milk pricing system on the economic response to selection on milk components
  • Vliv systému placení mléka na ekonomický selekční zisk při selekci podle složek mléka (cs)
  • Impact of milk pricing system on the economic response to selection on milk components (en)
skos:prefLabel
  • Impact of milk pricing system on the economic response to selection on milk components
  • Vliv systému placení mléka na ekonomický selekční zisk při selekci podle složek mléka (cs)
  • Impact of milk pricing system on the economic response to selection on milk components (en)
skos:notation
  • RIV/00027014:_____/07:#0000449!RIV08-MZE-00027014
http://linked.open.../vavai/riv/strany
  • 192-200
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(MZE0002701401)
http://linked.open...iv/cisloPeriodika
  • 4
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 425581
http://linked.open...ai/riv/idVysledku
  • RIV/00027014:_____/07:#0000449
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • cattle; milk pricing systems; milk quota; economic weight; selection response (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV
  • [4151C101CA2A]
http://linked.open...i/riv/nazevZdroje
  • Journal of Animal Breeding and Genetics
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 124
http://linked.open...iv/tvurceVysledku
  • Přibyl, Josef
  • Wolf, Jochen
  • Wolfová, Marie
http://linked.open...n/vavai/riv/zamer
issn
  • 0931-2668
number of pages
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