Heritability and correlations of milk traits in the view of kappa-casein genotypes in Vojvodina Holstein-friesian dairy cattle
In the current study, among 420 Holstein cows, the following ratios of κ-casein genotypes were found: 0.25 were AA, 0.52 were AB and 0.23 were BB. Frequencies of alleles A and B were 0.51 and 0.49, respectively. Cows with κ-casein AA and AB genotypes produced 322.72 and 464.73 kg more milk per year...
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| Format: | Article |
| Language: | English |
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Croatian Dairy Union
2013-05-01
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| Series: | Mljekarstvo |
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| Online Access: | http://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=150939 |
| _version_ | 1819012927478300672 |
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| author | Žolt Nemeš Anka Popović-Vranješ Dragomir Lukač Vitomir Vidović David Cvetanović Ljuba Štrbac Milanko Stupar |
| author_facet | Žolt Nemeš Anka Popović-Vranješ Dragomir Lukač Vitomir Vidović David Cvetanović Ljuba Štrbac Milanko Stupar |
| author_sort | Žolt Nemeš |
| collection | DOAJ |
| description | In the current study, among 420 Holstein cows, the following ratios of κ-casein genotypes were found: 0.25 were AA, 0.52 were AB and 0.23 were BB. Frequencies of alleles A and B were 0.51 and 0.49, respectively. Cows with κ-casein AA and AB genotypes produced 322.72 and 464.73 kg more milk per year compared to cows of casein BB genotype (P<0.05), respectively. There were no significant differences in the amount of milk produced by cows of AA and AB casein genotypes. There were no statistically significant differences in overall yields (kilograms per year) of milk fat and milk protein between κ-casein genotypes of cows. In contrast, milk from genotype BB cows contained a significantly (P<0.05) higher percentage of milk fat compared to the milks of casein genotypes AA and AB. In spite of the different κ-casein genotypes having a significant influence on milk yield and fat content, heritability estimations showed that all three genotypes were of medium heritability, and heritability did not differ significantly between them. Variability values (of examined traits) were stable and large enough to ensure selection gains in future generations. |
| first_indexed | 2024-12-21T01:51:50Z |
| format | Article |
| id | doaj.art-20343fb4a2444010a345f4d603587d3a |
| institution | Directory Open Access Journal |
| issn | 0026-704X 1846-4025 |
| language | English |
| last_indexed | 2024-12-21T01:51:50Z |
| publishDate | 2013-05-01 |
| publisher | Croatian Dairy Union |
| record_format | Article |
| series | Mljekarstvo |
| spelling | doaj.art-20343fb4a2444010a345f4d603587d3a2022-12-21T19:19:53ZengCroatian Dairy UnionMljekarstvo0026-704X1846-40252013-05-016329197Heritability and correlations of milk traits in the view of kappa-casein genotypes in Vojvodina Holstein-friesian dairy cattleŽolt NemešAnka Popović-VranješDragomir LukačVitomir VidovićDavid CvetanovićLjuba ŠtrbacMilanko StuparIn the current study, among 420 Holstein cows, the following ratios of κ-casein genotypes were found: 0.25 were AA, 0.52 were AB and 0.23 were BB. Frequencies of alleles A and B were 0.51 and 0.49, respectively. Cows with κ-casein AA and AB genotypes produced 322.72 and 464.73 kg more milk per year compared to cows of casein BB genotype (P<0.05), respectively. There were no significant differences in the amount of milk produced by cows of AA and AB casein genotypes. There were no statistically significant differences in overall yields (kilograms per year) of milk fat and milk protein between κ-casein genotypes of cows. In contrast, milk from genotype BB cows contained a significantly (P<0.05) higher percentage of milk fat compared to the milks of casein genotypes AA and AB. In spite of the different κ-casein genotypes having a significant influence on milk yield and fat content, heritability estimations showed that all three genotypes were of medium heritability, and heritability did not differ significantly between them. Variability values (of examined traits) were stable and large enough to ensure selection gains in future generations.http://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=150939κ-casein genotypesmilk traitsheritability |
| spellingShingle | Žolt Nemeš Anka Popović-Vranješ Dragomir Lukač Vitomir Vidović David Cvetanović Ljuba Štrbac Milanko Stupar Heritability and correlations of milk traits in the view of kappa-casein genotypes in Vojvodina Holstein-friesian dairy cattle Mljekarstvo κ-casein genotypes milk traits heritability |
| title | Heritability and correlations of milk traits in the view of kappa-casein genotypes in Vojvodina Holstein-friesian dairy cattle |
| title_full | Heritability and correlations of milk traits in the view of kappa-casein genotypes in Vojvodina Holstein-friesian dairy cattle |
| title_fullStr | Heritability and correlations of milk traits in the view of kappa-casein genotypes in Vojvodina Holstein-friesian dairy cattle |
| title_full_unstemmed | Heritability and correlations of milk traits in the view of kappa-casein genotypes in Vojvodina Holstein-friesian dairy cattle |
| title_short | Heritability and correlations of milk traits in the view of kappa-casein genotypes in Vojvodina Holstein-friesian dairy cattle |
| title_sort | heritability and correlations of milk traits in the view of kappa casein genotypes in vojvodina holstein friesian dairy cattle |
| topic | κ-casein genotypes milk traits heritability |
| url | http://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=150939 |
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