prikaz prve stranice dokumenta Genetic parameters and breeding values for daily milk production of Holstein cows in terms of heat stress
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Scientific paper - Original scientific paper
Genetic parameters and breeding values for daily milk production of Holstein cows in terms of heat stress
Mljekarstvo : časopis za unaprjeđenje proizvodnje i prerade mlijeka, 70 (2020), 3; 201-209. https://doi.org/10.15567/mljekarstvo.2020.0306
Vučković, Goran; Bobić, Tina; Mijić, Pero; Gavran, Mirna; Gregić, Maja; Potočnik, Klemen; Bogdanović, Vladan; Gantner, Vesna

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Vučković, G., Bobić, T., Mijić, P., Gavran, M., Gregić, M., Potočnik, K. ... Gantner, V. (2020). Genetic parameters and breeding values for daily milk production of Holstein cows in terms of heat stress. Mljekarstvo : časopis za unaprjeđenje proizvodnje i prerade mlijeka, 70. (3), 201-209. doi: 10.15567/mljekarstvo.2020.0306

Vučković, Goran, et al. "Genetic parameters and breeding values for daily milk production of Holstein cows in terms of heat stress." Mljekarstvo : časopis za unaprjeđenje proizvodnje i prerade mlijeka, vol. 70, no. 3, 2020, pp. 201-209. https://doi.org/10.15567/mljekarstvo.2020.0306

Vučković, Goran, Tina Bobić, Pero Mijić, Mirna Gavran, Maja Gregić, Klemen Potočnik, Vladan Bogdanović and Vesna Gantner. "Genetic parameters and breeding values for daily milk production of Holstein cows in terms of heat stress." Mljekarstvo : časopis za unaprjeđenje proizvodnje i prerade mlijeka 70, no. 3 (2020): 201-209. https://doi.org/10.15567/mljekarstvo.2020.0306

Vučković, G., et al. (2020) 'Genetic parameters and breeding values for daily milk production of Holstein cows in terms of heat stress', Mljekarstvo : časopis za unaprjeđenje proizvodnje i prerade mlijeka, 70(3), pp. 201-209. doi: 10.15567/mljekarstvo.2020.0306

Vučković G, Bobić T, Mijić P, Gavran M, Gregić M, Potočnik K, and sur.. Genetic parameters and breeding values for daily milk production of Holstein cows in terms of heat stress. Mljekarstvo : časopis za unaprjeđenje proizvodnje i prerade mlijeka [Internet]. 2020 June 17 [cited 2024 November 28];70(3):201-209. doi: 10.15567/mljekarstvo.2020.0306

G. Vučković, et al., "Genetic parameters and breeding values for daily milk production of Holstein cows in terms of heat stress", Mljekarstvo : časopis za unaprjeđenje proizvodnje i prerade mlijeka, vol. 70, no. 3, pp. 201-209, June 2020. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:151:455320. [Accessed: 28 November 2024]

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Title (english)Genetic parameters and breeding values for daily milk production of Holstein cows in terms of heat stress
AuthorGoran Vučković
AuthorTina Bobić
AuthorPero Mijić
AuthorMirna Gavran
AuthorMaja Gregić
AuthorKlemen Potočnik
AuthorVladan Bogdanović
AuthorVesna Gantner
Author's institutionJosip Juraj Strossmayer University of Osijek
Faculty of Agrobiotechnical Sciences Osijek
(Department of Animal Production and Biotechnology)
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Agronomy
Animal Husbandry
Abstract (english)
In order to estimate the variance components as well as the breeding value for daily milk production of Holstein cows in terms of heat stress defined as different THI threshold values (68, 70, and 72) 1,275,713 test-day records from 90,159 cows were used. Temperature-humidity index (THI) calculated from ambient temperature and relative humidity recorded in the barns on the milk recording day was used as the measure of heat stress. Daily milk production was analysed as a bivariate variable, in the normal conditions (under the set THIthreshold value), and in terms of heat stress (above the set THIthreshold value) using a model that accounted variances due to lactation stage, calving season, age at calving, breeding region, parity, permanent environment, interaction between hear and year, and individual animal. The estimated high genetic correlations between the daily milk production in normal and heat stress conditions, as well as high correlations among the EBVs in normal and heat stress conditions, point out that Holstein cows with high productivity in normal condition will sustain an alike level of production even in terms of heat stress. These results indicate that the Holstein cows are very well acclimatized to the environmental conditions at dairy farms in Croatia. However, these findings should be taken with caution, given that measurements of microclimate parameters were conducted only once at a milk recording day, so the reliability of such measurements could be questionable. In conclusion, in order to realize a completely unambiguous conclusion, further studies that include multiple daily measurements of microclimatic parameters in the farms facilities are necessary.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - domestic
Publication versionPublished version
Journal titleMljekarstvo : časopis za unaprjeđenje proizvodnje i prerade mlijeka
Numberingvol. 70, no. 3, pp. 201-209
p-ISSN0026-704X
e-ISSN1846-4025
DOIhttps://doi.org/10.15567/mljekarstvo.2020.0306
URN:NBNurn:nbn:hr:151:455320
Publication2020-06-17
Document URLhttps://hrcak.srce.hr/239298
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2024-05-30 21:59:16