Associations between milk production level, calving interval length, lactation curve parameters and economic results in Holstein cows
The objective of work was to evaluate effects of milk production level (MY1≥9500 kg, n=23; MY2 = 8000-9499, n=28; and MY3≤7999 kg, n=29) and calving interval length (CI1≥440 days, n=22; CI2 = 400-439 days, n=33; and CI3≤399 days, n=25) on the lactation curve parameters calculated using MilkBot® Mode...
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Croatian Dairy Union
2015-11-01
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| Series: | Mljekarstvo |
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| Online Access: | http://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=218022 |
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| author | Dana Němečková Luděk Stádník Jaroslav Čítek |
| author_facet | Dana Němečková Luděk Stádník Jaroslav Čítek |
| author_sort | Dana Němečková |
| collection | DOAJ |
| description | The objective of work was to evaluate effects of milk production level (MY1≥9500 kg, n=23; MY2 = 8000-9499, n=28; and MY3≤7999 kg, n=29) and calving interval length (CI1≥440 days, n=22; CI2 = 400-439 days, n=33; and CI3≤399 days, n=25) on the lactation curve parameters calculated using MilkBot® Model and economic profitability of Holstein dairy cow breeding. Data were obtained from 80 Holstein cows on 1st to 4th parity calved between January and August 2012 on the dairy farm of the Czech University of Life Sciences Prague in Czech Republic. Lactation curve parameters differed more in relation with milk production level compared to calving interval length. Lactation curve in cows with the highest MY was characterized with significantly higher overall magnitude (scale parameter) of milk production (P<0.01), higher peak yield (P<0.01) which occurred later (P<0.05) and higher persistence (P<0.05). Due to combination of higher persistence and total yield, average milk yield per day of calving interval was significantly (P<0.05) higher in cows with middle CI than in short CI. Optimal calving interval length should be assessed in relation with lactation persistence and milk production level. The highest individual profitability was reached by cows in MY1 and CI2 group. |
| format | Article |
| id | doaj-art-7aa61aabbf3145f89cbb39dd2f3d9636 |
| institution | OA Journals |
| issn | 0026-704X 1846-4025 |
| language | English |
| publishDate | 2015-11-01 |
| publisher | Croatian Dairy Union |
| record_format | Article |
| series | Mljekarstvo |
| spelling | doaj-art-7aa61aabbf3145f89cbb39dd2f3d96362025-08-20T01:57:59ZengCroatian Dairy UnionMljekarstvo0026-704X1846-40252015-11-0165424325010.15567/mljekarstvo.2015.0404Associations between milk production level, calving interval length, lactation curve parameters and economic results in Holstein cowsDana Němečková0Luděk Stádník1Jaroslav Čítek2Department of Animal Husbandry, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 21 Prague 6 - Suchdol, Czech RepublicDepartment of Animal Husbandry, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 21 Prague 6 - Suchdol, Czech RepublicDepartment of Animal Husbandry, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 21 Prague 6 - Suchdol, Czech Republic The objective of work was to evaluate effects of milk production level (MY1≥9500 kg, n=23; MY2 = 8000-9499, n=28; and MY3≤7999 kg, n=29) and calving interval length (CI1≥440 days, n=22; CI2 = 400-439 days, n=33; and CI3≤399 days, n=25) on the lactation curve parameters calculated using MilkBot® Model and economic profitability of Holstein dairy cow breeding. Data were obtained from 80 Holstein cows on 1st to 4th parity calved between January and August 2012 on the dairy farm of the Czech University of Life Sciences Prague in Czech Republic. Lactation curve parameters differed more in relation with milk production level compared to calving interval length. Lactation curve in cows with the highest MY was characterized with significantly higher overall magnitude (scale parameter) of milk production (P<0.01), higher peak yield (P<0.01) which occurred later (P<0.05) and higher persistence (P<0.05). Due to combination of higher persistence and total yield, average milk yield per day of calving interval was significantly (P<0.05) higher in cows with middle CI than in short CI. Optimal calving interval length should be assessed in relation with lactation persistence and milk production level. The highest individual profitability was reached by cows in MY1 and CI2 group.http://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=218022dairy cowsreproduction resultslactation curvepersistencecostsincomeprofitability |
| spellingShingle | Dana Němečková Luděk Stádník Jaroslav Čítek Associations between milk production level, calving interval length, lactation curve parameters and economic results in Holstein cows Mljekarstvo dairy cows reproduction results lactation curve persistence costs income profitability |
| title | Associations between milk production level, calving interval length, lactation curve parameters and economic results in Holstein cows |
| title_full | Associations between milk production level, calving interval length, lactation curve parameters and economic results in Holstein cows |
| title_fullStr | Associations between milk production level, calving interval length, lactation curve parameters and economic results in Holstein cows |
| title_full_unstemmed | Associations between milk production level, calving interval length, lactation curve parameters and economic results in Holstein cows |
| title_short | Associations between milk production level, calving interval length, lactation curve parameters and economic results in Holstein cows |
| title_sort | associations between milk production level calving interval length lactation curve parameters and economic results in holstein cows |
| topic | dairy cows reproduction results lactation curve persistence costs income profitability |
| url | http://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=218022 |
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