Show simple item record

Telesna kondicija krava u proizvodnom ciklusu

dc.creatorNovaković, Zeljko
dc.creatorSretenović, Ljiljana
dc.creatorAleksić, S.
dc.creatorPetrović, Milan M.
dc.creatorPantelić, Vlada
dc.creatorOstojić Andrić, Dušica
dc.creatorNikšić, Dragan
dc.date.accessioned2018-12-14T14:53:47Z
dc.date.available2018-12-14T14:53:47Z
dc.date.issued2010
dc.identifier.issn1450-9156
dc.identifier.urihttp://r.istocar.bg.ac.rs/handle/123456789/241
dc.description.abstractCondition of animals is manifested through level of achieved nourishment. Body condition score (BCS) is a precise method of determination of reserves of deposited energy in form of subcutaneous fat tissue. Adequate body reserves are necessary requirement for maximal increase of milk production in the period of early lactation. Based on BCS we can precisely determine the number of cows which are bellow weight (excessively thin) or over weight (excessively fat). Body condition changes during lactation. Cows in early lactation are in the negative energy balance (NEB). Changes of the body condition should be over at the end of lactation. Objective is to have cows in optimal body condition during all production phases. Object of research was body condition of high yielding cows during production cycle. Realized sample size was 363 cows of Holstein-Friesian breed. Average BCS value of cows in dry period was 3.39 (2.37-4.41), at calving 3.56 (2.55-4.63), at lactation peak 2.30 (1.35-3.16) and in the mid lactation 2.50 (1.35-3.43). In dry period, most of cows (n=100 or 27.55%) ranged in BCS from 3.26 to 3.50. During dry period increase of body condition scores of cows occurred. At calving, most of heads (n=99 or 27.50%) ranged in their BCS from 3.51 to 3.75. During period of early lactation there was a significant decrease of the body condition of cows. At the peak of lactation a slight increase of body condition was recorded. At the peak of lactation, most cows (n=125 or 36.76%) ranged in BCS from 2.26 to 2.50. In the mid-lactation period, slight increase of body condition of cows occurred. During this period, most cows (n=88 or 27.32%) ranged in their BCS from 2.51 to 2.75. In general, realized average BCS results according to production phases deviated statistically significantly from target values.en
dc.description.abstractPrikazani rezultati precizno ukazuju na ostvarene prosečne vrednosti, interval varijacije, standardnu devijaciju, koeficijent varijacije i značajnost odstupanja postignutih od ciljnih vrednosti OTK krava po fazama proizvodnog ciklusa. Prosečna vrednost OTK krava iznosila je na zasušenju 3.39 (2.37-4.41), teljenju 3,56 (2,55-4,63), vrhu laktacije 2,30 (1,35-3,16) i sredini laktacije 2,50 (1,35-3,43). Realizovane vrednosti ukazuju da je kod distribucije prosečnih OTK krava za sve tri telesne regije u prvoj fazi proizvodnog ciklusa od ukupnog broja koji čini 363 grla najviše (n=100 ili 27,55%) bilo u intervalu OTK od 3,26 do 3,50. Ispod tog intervala OTK bilo je 131 grlo ili 36,09%, a iznad 132 grla ili 36,36%. U drugoj fazi proizvodnog ciklusa od ukupno 360 ocenjenih krava najviše grla (n=99 ili 27,50%) bilo je u intervalu OTK od 3,51 do 3,75. Ispod tog intervala OTK bilo je 167 grla ili 46,39%, a iznad 84 grlo ili 23,33%. U ovoj fazi proizvodnje u intervalu OTK od 3,26 do 3,75 bilo je 193 krave ili 53,61%. Iznad tog nivoa OTK bilo je 94 grla ili 26,11%, dok je ispod bilo 73 krave ili 20,27%. Tokom perioda zasušenja došlo je do povećanja telesne kondicije krava. U trećoj fazi od 340 ocenjenih krava najviše grla (n=125 ili 36,76%) bilo je u intervalu OTK od 2,26 do 2,50. Ispod navedenog nivoa OTK bilo je 130 grla ili 38,23%, a iznad 85 krava ili 25,00%. Tokom perioda rane laktacije došlo je do značajnog smanjenja telesne kondicije krava.U četvrtoj fazi proizvodnog ciklusa od ukupno 322 ocenjena grla najviše krava (n=88 ili 27,32%) bilo je u intervalu OTK od 2,51 do 2,75. Ispod tog intervala OTK bilo je 161 grlo ili 50,00%, a iznad 73 krave ili 22,67%. U ovoj fazi proizvodnje u širem intervalu OTK od 2,26 do 2,75 bilo je 173 krave ili 53,73%. Iznad tog nivoa OTK bilo je 73 grla ili 22,67%, dok je ispod bilo 76 krava ili 23,60%. U periodu sredine laktacije došlo je do blagog povećanja telesne kondicije krava. U celini posmatrano rezultati su statistički vrlo značajno su odstupali od ciljnih vrednosti za ocenu telesne kondicije.sr
dc.publisherInstitute for Animal Husbandry, Belgrade
dc.rightsopenAccess
dc.sourceBiotechnology in Animal Husbandry
dc.subjectnutritionen
dc.subjectproduction cycleen
dc.subjectbody condition scoreen
dc.subjectenergy balanceen
dc.titleBody condition of cows in production cycleen
dc.titleTelesna kondicija krava u proizvodnom ciklususr
dc.typearticle
dc.rights.licenseBY
dcterms.abstractНикшић, Драган; Петровић, Милан М.; Новаковић, Зељко; Остојић-Aндрић, Душица; Сретеновић, Љиљана; Пантелић, Влада; Aлексић, С.; Телесна кондиција крава у производном циклусу; Телесна кондиција крава у производном циклусу;
dc.citation.volume26
dc.citation.issue5-6
dc.citation.spage309
dc.citation.epage318
dc.citation.other26(5-6): 309-318
dc.citation.rankM23
dc.identifier.doi10.2298/BAH1006309N
dc.identifier.rcubKonv_605
dc.identifier.fulltexthttp://r.istocar.bg.ac.rs//bitstream/id/1980/239.pdf
dc.type.versionpublishedVersion


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record