The Associations between Calving Interval and Milk Production traits in population of dairy cows of Slovak Simmental cattle.

Jozef Bujko, Juraj Candrák, Peter Strapák, Július Žitný, Cyril Hrnčár

Abstract


The aim this work was to associations between calving interval and milk production traits in population of dairy cows of Slovak Simmental cattle in the period 2003-2009. The basic statistic analysis were analysed using the SAS version 9.1.3. The average length between calving intervals was 413.34 days in population of dairy cows of Slovak Simmental cattle. Correlation between evaluated calving interval and traits of milk production (milk, fat, proteins) were lower negative r=-0.00924, r=-0.00539, r=-0.02381and correlation between calving interval and proteins in kg statistically high significant (P<.0001). The analyses by the effect on calving interval was the highest effect of herd-years-season R2= 0.212786, others effects of father R2= 0.028230 and cods of milk groups R2= 0.001353.


Keywords


Slovak Simmental breed, dairy cows, calving interval, traits of milk production, correlation

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Scientific Papers Animal Science and Biotechnologies publish open access articles under the terms of the Creative Commons Attribution 4.0 Licence (read full legal code).


LUCRARI STIINTIFICE ZOOTEHNIE SI BIOTEHNOLOGII (SCIENTIFIC PAPERS ANIMAL SCIENCE AND BIOTECHNOLOGIES)

ISSN print 1841 - 9364
ISSN online 2344 - 4576
ISSN-L  1841 - 9364
(former ISSN 1221-5287, E-ISSN 1841-9364)

PUBLISHER: AGROPRINT Timisoara, Romania
PAPER ACCESS: Full text articles available for free
FREQUENCY: Semiannual
PUBLICATION LANGUAGE: English
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Banat´s University of Agricultural Sciences and Veterinary Medicine "King Michael I of Romania" from Timisoara
Faculty of Animal Science and Biotechnologies
300645, Timişoara, Calea Aradului 119, Romania

E-mail: spasb [at] animalsci-tm.ro
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