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Scientific paper - Original scientific paper
HEAT STRESS AND MILK PRODUCTION IN THE FIRST PARITY HOLSTEINS – THRESHOLD DETERMINATION IN EASTERN CROATIA
Poljoprivreda, 21 (2015), 1 Supplement; 97-100. https://doi.org/10.18047/poljo.21.1.sup.22
Gantner, Vesna; Kuterovac, Krešimir; Barać, Zdravko; Potočnik, Klement

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Gantner, V., Kuterovac, K., Barać, Z. & Potočnik, K. (2015). HEAT STRESS AND MILK PRODUCTION IN THE FIRST PARITY HOLSTEINS – THRESHOLD DETERMINATION IN EASTERN CROATIA. Poljoprivreda, 21. (1 Supplement), 97-100. doi: 10.18047/poljo.21.1.sup.22

Gantner, Vesna, et al. "HEAT STRESS AND MILK PRODUCTION IN THE FIRST PARITY HOLSTEINS – THRESHOLD DETERMINATION IN EASTERN CROATIA." Poljoprivreda, vol. 21, no. 1 Supplement, 2015, pp. 97-100. https://doi.org/10.18047/poljo.21.1.sup.22

Gantner, Vesna, Krešimir Kuterovac, Zdravko Barać and Klement Potočnik. "HEAT STRESS AND MILK PRODUCTION IN THE FIRST PARITY HOLSTEINS – THRESHOLD DETERMINATION IN EASTERN CROATIA." Poljoprivreda 21, no. 1 Supplement (2015): 97-100. https://doi.org/10.18047/poljo.21.1.sup.22

Gantner, V., et al. (2015) 'HEAT STRESS AND MILK PRODUCTION IN THE FIRST PARITY HOLSTEINS – THRESHOLD DETERMINATION IN EASTERN CROATIA', Poljoprivreda, 21(1 Supplement), pp. 97-100. doi: 10.18047/poljo.21.1.sup.22

Gantner V, Kuterovac K, Barać Z, Potočnik K. HEAT STRESS AND MILK PRODUCTION IN THE FIRST PARITY HOLSTEINS – THRESHOLD DETERMINATION IN EASTERN CROATIA. Poljoprivreda [Internet]. 2015 September [cited 2024 November 17];21(1 Supplement):97-100. doi: 10.18047/poljo.21.1.sup.22

V. Gantner, K. Kuterovac, Z. Barać and K. Potočnik, "HEAT STRESS AND MILK PRODUCTION IN THE FIRST PARITY HOLSTEINS – THRESHOLD DETERMINATION IN EASTERN CROATIA", Poljoprivreda, vol. 21, no. 1 Supplement, pp. 97-100, September 2015. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:151:405642. [Accessed: 17 November 2024]

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Metadata
Title (english)HEAT STRESS AND MILK PRODUCTION IN THE FIRST PARITY HOLSTEINS – THRESHOLD DETERMINATION IN EASTERN CROATIA
AuthorVesna Gantner
AuthorKrešimir Kuterovac
AuthorZdravko Barać
AuthorKlement Potočnik
Author's institutionJosip Juraj Strossmayer University of Osijek
Faculty of Agrobiotechnical Sciences Osijek
(DEPARTMENT FOR SPECIAL ZOOTECHNIQUE)
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Agronomy
Animal Husbandry
Abstract (english)
In the light of increasingly rapid climate change worldwide, one of the primary goals is to reduce financial losses of dairy farmers and to enable the sustainable farming. In order to realize those goals, the necessity of implementation of breeding values for heat resistance in breeding strategies, have become more and more pronounced. Estimation of breeding values requires determination of temperaturehumidity index (THI) threshold value. Therefore, the objective of this research was to determine the THI threshold value for the first parity Holsteins in environmental conditions in Eastern Croatia. With that purpose individual test-day records of the first parity Holsteins with records of ambient temperature and relative humidity in the barns were analysed. Data were collected in regular milk recording from January 2006 to December 2012. The THI threshold values for daily milk yield were determined by least square analyses of variance for each given THI value (from 65 to 76) using the PROC MIXED (SAS). The THI <68 did not cause significant change in daily milk production of the first parity Holsteins. Significant decrease of daily milk yield was observed at THI ≥ 68 with estimated drop from 0.240 to 0.716 kg milk/day (THI from 68 to 76). The THI=68, as the lowest value at which significant decrease in daily milk yield was determined, was taken as the threshold value for the first parity Holsteins in Eastern Croatia.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review
Publication versionPublished version
Journal titlePoljoprivreda
Numberingvol. 21, no. 1 Supplement, pp. 97-100
p-ISSN1330-7142
e-ISSN1848-8080
DOIhttps://doi.org/10.18047/poljo.21.1.sup.22
URN:NBNurn:nbn:hr:151:405642
Publication2015-09
Document URLhttp://dx.doi.org/10.18047/poljo.21.1.sup.22
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2017-04-12 14:41:11