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Vpliv intenzivnosti vzreje plemenskih telic na mlečnost : diplomsko delo : visokošolski strokovni študij = Effect of the intensity of growing rate on milk yield in breeding heifers : graduation thesis : higher professional studiesBrinar, NatašaV nalogi smo proučevali vpliv intenzivnosti vzreje plemenskih telic na kasnejšo mlečnost. Na podlagi pregleda številnih virov literature smo ugotovili, da na kasnejšo mlečnost pomembno vplivajo ... dejavniki okolja, še posebej prehrana. Poleg teh vplivov okolja vplivajo na mlečnost še genetski dejavniki, kot sta pasma in tip živali, ter skupni vpliv genotipa in okolja (stadij laktacije, starost ob prvi telitvi, molža ...). Že v fazi vzreje, predpuberteto, z intenzivnostjo prehrane vplivamo na rast živali ter na razvojmlečne žleze. Preveč intenzivna prehrana v tem obdobju povzroči nalaganje maščob v mlečno žlezo in tako onemogoči razvoj mlekotvornih celic, od katerih je odvisna količina mleka. Poleg nalaganja maščob v mlečno žlezo sele te, ob preveč intenzivni prehrani, nalagajo tudi v telesu, kar ocenjujemos kondicijo živali. Zaradi predobre kondicije živali ob telitvi lahko pride do zapletov v samem poteku telitve (težka telitev, poškodbe rodil) in tudi v obdobju po telitvi, kar ima za posledico slabšo plodnost in večjo verjetnost presnovnih bolezni. To pa so vzroki, ki poleg majhne mlečnosti vplivajo, da žival predčasno izločimo iz črede. Zaradi izločitev se življenjska doba živali v prireji krajša, zato moramo vzrejati večje število plemenskih telic, ki bodo čredo dopolnile.Type of material - undergraduate thesisPublication and manufacture - Ljubljana : [N. Brinar], 2003Language - slovenianCOBISS.SI-ID - 1419400
Author
Brinar, Nataša
Other authors
Čepon, Marko |
Lavrenčič, Andrej, 1965-
Topics
govedo |
plemenske telice |
intenzivna vzreja |
mlečnost |
diplomske naloge
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Library/institution |
City | Acronym | For loan | Other holdings |
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BF, Zootechnical Department, Ljubljana | Domžale | BFZOO |
reading room 1 cop.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Brinar, Nataša | ![]() |
Čepon, Marko | 05096 |
Lavrenčič, Andrej, 1965- | 11889 |
Source: Personal bibliographies
and: SICRIS
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