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Holšteino veislės įtaka Lietuvos juodmargių karvių produktyvumui ir pieno sudėčiai / Influence on Holstein breed on the milk production and composition of black and white cows

The aim of Master work is to valuate Lithuanian black and white cows productivity and milk composition considering the blood dimensions of holstein breed. All data had been made through statistical analysis by EXCEL computation as well as by statistical package „R“ (http://www.r-project.org) in the LVA Laboratory of Animals Research of Breeding Worth and Selection. It was stated that the average of the Holsteinization grade of the researched cows in stock was 79,38 percent, and only 7,1 percent of the researched cows average of the Holsteinization grade didn’t reach 50 percent. Intermediate correlation between the milk productivity and milk protein was found an unfavourable but statistical reliable coherence (r=-0,346, p<0,001) The highest milk productivity was by cows with Holsteinization grade of 87,5-98,5 percent, the best milk fat consistence in percent 62,5-74,0 percent of Holsteinization grade cows, and the best milk protein consistence was by cows with Holsteinization grade reaching up to 50 percent. Having developed holsteinization grade in a stock, the percent of cows productivity was set the little statistical reliable coherence (r=0,224, p<0,01). The greatest number of somatic cells (532,7 thousand/ml.) was found in milk of cows which had the holsteinization grade to 50 and 50,0-62,4 percent.

Identiferoai:union.ndltd.org:LABT_ETD/oai:elaba.lt:LT-eLABa-0001:E.02~2007~D_20070419_140232-74864
Date19 April 2007
CreatorsKačinskaitė-Žuvaitienė, Dovilė
ContributorsČiučelienė, Zita, Suveizdis, Virginijus, Staniškienė, Birutė, Kulpys, Jurgis, Matusevičius, Paulius, Gružauskas, Romas, Juozaitienė, Vida, Kriauzienė, Janina, Jukna, Česlovas, Juozaitis, Arūnas, Kauzonienė, Ilona, Jukna, Vigilijus, Lithuanian Veterinary Academy
PublisherLithuanian Academic Libraries Network (LABT), Lithuanian Veterinary Academy
Source SetsLithuanian ETD submission system
LanguageLithuanian
Detected LanguageEnglish
TypeMaster thesis
Formatapplication/pdf
Sourcehttp://vddb.library.lt/obj/LT-eLABa-0001:E.02~2007~D_20070419_140232-74864
RightsUnrestricted

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