STUDY REGARDING THE INFLUENCE OF PARITY ON MILK PRODUCTION TRAITS IN ROMANIAN BLACK AND WHITE COWS

SIMONA BAUL, S. ACATINCĂI, L.T. CZISZTER, G. STANCIU, D. GAVOJDIAN, I. TRIPON, SILVIA ERINA

Abstract


The aim of this paper was to establish the way parity had an influence on the milk production and lactation length in Romanian Black and White cows from the Didactical Farm Timisoara. The influence of the parity on the milk production and lactation length was studied on 125 lactations (37 first lactations, 23 second lactations, 29 third lactations, 14 fourth lactations, and 22 fifth and over lactations). The longest lactation was found in the second parity (397.9 days) and the shortest in the 5+ parity (353.3 days). The maximum milk yield per total lactation was attained in the third lactation (5705.4 kg) and the minimum milk yield in the first lactation (4652.6 kg). Variability for this trait was higher in second lactation (20.74%). The lowest variability coefficient was found in the third lactation (v%=15.36%).


Keywords


parity; lactation length; Romanian Black and White

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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
Bioengineering Faculty of Animal Resources
300645, Timişoara, Calea Aradului 119, Romania

E-mail: spasb [at] animalsci-tm.ro
Phone: +40-256-277160, Fax.: +40-256-277110