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Uticaj aplikacije Niacina u peripartalnom periodu krava na proizvodnju mleka do postizanja pika laktacije

dc.contributor.authorHristovska, Talija
dc.contributor.authorCincovic, Marko
dc.contributor.authorBelic, Branislava
dc.contributor.authorDjokovic, Radojica
dc.contributor.authorPetrovic, Milos
dc.contributor.authorKovacevic, Zorana
dc.date.accessioned2017-06-28T20:57:43Z
dc.date.available2017-06-28T20:57:43Z
dc.identifier.urihttp://arhiva.nara.ac.rs/handle/123456789/2213
dc.description.abstractThe aim of this study is to determine whether the use of niacin in the peripartum affects milk production in cows in the initial niacin early laktaciji.15 cows and 15 cows were presented a negative control. Niacin is managed through food orally. We used a preparation in a dose that allows access to the intestine, about 6-12g niacin / day. The application of niacin tendency towards positive action on the production of milk for 30 days of lactation (p <0.1), but this trend is lost if we look at a longer period from birth to 60.dana lactation. Although there were no statistically significant differences in milk production, from a practical point of view, it is important to determine the percentage of cows in the group who received niacin that had statistically significant higher milk production than in a group that did not get niacin. The analysis of frequency allocation, beta fixes and statistical power of the test is calculated that 60% of the cows showed significantly higher production of milk cows in the group who received niacin compared to control, but with the progress of lactation, this percentage decreases, and 60 days of lactation have only 26 , 6% of cows that are significantly higher milk production compared to the control. The use of niacin can improve milk production in cows in early lactation.sr
dc.description.abstractCilj ovog rada je da se utvrdi da li aplikacija niacina u peripartalnom periodu utiče na proizvodnju mleka kod krava u ranoj laktaciji.15 krava je primal niacin, a 15 krava su predstavljane negativnu kontrolu. Niacin je aplikovan putem hrane per os. Korišćen je preparat u dozi koja omogućuje dostupnost u crevima oko 6-12g niacina/dan. Aplikacija niacina pokazuje tendenciju pozitivnog delovanja na proizvodnju mleka do 30. dana laktacije (p<0,1), ali se ova tendencija gubi ako posmatramo širi period od partusa do 60.dana laktacije. Iako nije bilo statistički značajne razlike u proizvodnji mleka, sa praktičnog aspekta je značajno odrediti koji je to procenat krava u grupi koja je primala niacin koji je imao statistički značajno veću proizvodnju mleka u odnosu na grupu krava koja nije primala niacin. Analizom distribucija frekvencije, beta greške i statističke snage testa izračunato je da je 60% krava pokazalo statistički značajno veću proizvodnju mleka u grupi krava koja je primala niacin u odnosu na kontrolu, ali se sa napredovanjem laktacije taj procenat smanjuje, pa 60. dana laktacije imamo samo 26,6% krava koje su pokazale značajno veću proizvodnju mleka u odnosu na kontrolu. Upotreba niacina može poboljšati proizvodnju mleka kod krava u ranoj laktaciji.sr
dc.subjectcowsr
dc.subjectniacinsr
dc.subjectmilk productionsr
dc.subjectkravesr
dc.subjectniacinsr
dc.subjectproizvodnja mlekasr
dc.titleInfluence of Niacin Supplementation in Periparturient Period to Milk Production Until Peak of Lactation in Dairy Cowssr
dc.title.alternativeUticaj aplikacije Niacina u peripartalnom periodu krava na proizvodnju mleka do postizanja pika laktacijesr


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