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Selection of bull dams in population of Simmental cattle

Selekcija bikovskih majki u populaciji simentalske rase goveda

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2009
184.pdf (224.0Kb)
Authors
Pantelić, Vlada
Novaković, Željko
Ostojić Andrić, Dušica
Article (Published version)
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Abstract
Increase of production and improvement of the quality of milk, as well as of the intensity of fertility, are main prerequisites of modern cattle production. For the purpose of production of domestic Simmental bulls it is necessary to select the best cows from main herd. These heads as a rule represent approx. 1% of best cows in the controlled population primary in regard to production of milk and milk fat, but also in regard to body development, udder development and fertility traits. Fertilization of bull dams is done according to adequate system, where, for each dam, annually, bull, previously selected as sire, is determined, whose semen will be used for her insemination. Since the fastest way for selection and genetic progress is sire-son line, the most attention is directed to selection of bull sires. In Serbia, annually, only very few bulls are tested, which is insufficient for realization of greater and faster genetic improvement of production and reproduction traits of Simmental... population of cattle. Therefore, centres for artificial insemination often import semen of elite bulls for planned insemination of Simmental bull dams, or borrow young bulls from abroad (waiting bulls) whose semen is used for insemination of main population. In this paper criteria for selection of cows into category of bull dams are presented as well as results relating to milk production, fertility, body development and type score of bull dams of Simmental breed in Central Serbia.

Povećanje proizvodnje i kvaliteta mleka kao i intenziteta plodnosti, osnovni su preduslovi savremene govedarske proizvodnje. Za potrebe proizvodnje bikova simentalske domaće rase neophodno je iz matičnog zapata odabrati najbolje krave. Ova grla, po pravilu, predstavljaju oko 1% najboljih krava kontrolisane populacije, pre svega u proizvodnji mleka i mlečne masti, a zatim i u telesnoj građi, građi vimena i osobinama plodnosti. Oplođavanje bikovskih majki se obavlja po odgovarajućem sistemu. Svakoj kravi se u toku jedne godine određuje bik čijim će se semenom osemeniti, a koji je prethodno odabran za oca budućih bikova. Budući da je najbrži put selekcije i genetskog unapređenja osobina putem linije otac-sin, izboru bikovskih očeva se pridaje najveća pažnja. U Srbiji se na godišnjem nivou testira jako mali broj bikova, što je nedovoljno za ostvarivanje nekog većeg i bržeg genetskog poboljšanja proizvodnih i reproduktivnih osobina populacije simentalske rase goveda. Iz tih razloga se centr...i za veštačko osemenjavanje odlučuju na uvoz semena za plansko oplođavanje bikovskih majki simentalske rase, ili pozajmicu mladih bikova iz inostranstva (čekajući bikovi) čije seme se upotrebljava za veštačko osemenjavanje matične populacije. Pored kriterijuma na osnovu kojih se vrši odabiranje krava u kategoriju bikovskih majki u radu su prikazani i rezultati mlečnosti, plodnosti, kao i telesne razvijenosti i ocene tipa bikovskih majki simentalske rase u centralnoj Srbiji.

Keywords:
Simmental breed / bull dams / bull sires / selection
Source:
Biotechnology in Animal Husbandry, 2009, 25, 5-6-1, 301-313
Publisher:
  • Institute for Animal Husbandry, Belgrade
Projects:
  • Razvoj održivih sistema stočarske proizvodnje u cilju dobijanja mleka i mesa sa osobinama funkcionalne hrane (RS-20042)

DOI: 10.2298/BAH0906301P

ISSN: 1450-9156

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URI
http://r.istocar.bg.ac.rs/handle/123456789/186
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