Dietary cation-anion difference in rations for pregnant dried off cows
On a farm with 230 Friesian cows, winter and summer nutrition of highly pregnant dry cows was studied. Dietary cation-anion difference in the rations (DCAD) was calculated to estimate its possible connection with the incidence of milk fever and hypocalcaemia in cows. In winter season daily ration wa...
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University of Ljubljana Press (Založba Univerze v Ljubljani)
1999-12-01
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| Series: | Acta Agriculturae Slovenica |
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| Online Access: | https://journals.uni-lj.si/aas/article/view/15871 |
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| author | Marija RAJČEVIČ Jože LEVSTEK Uroš RAJČEVIČ Tone ILC |
| author_facet | Marija RAJČEVIČ Jože LEVSTEK Uroš RAJČEVIČ Tone ILC |
| author_sort | Marija RAJČEVIČ |
| collection | DOAJ |
| description | On a farm with 230 Friesian cows, winter and summer nutrition of highly pregnant dry cows was studied. Dietary cation-anion difference in the rations (DCAD) was calculated to estimate its possible connection with the incidence of milk fever and hypocalcaemia in cows. In winter season daily ration was composed of 3 kg of hay, 10-13 kg of grass silage and 10-13 kg of maize silage, with 1 kg of concentrate and 50 g of min.-vit. mixture. During summer season cows grazed and were additionally fed 3 kg of hay and 8 kg of maize silage till mid June, then until the end of season the maize silage was replaced by 10 of grass silage. A week before expected date of calving, cows were fed an additional 2 kg of concentrate. Throughout the dry period the cows were also fed 100 g of min.-vit. mixture. Dietary cation-anion difference was estimated as milliequivalent (meq) per kg of DM [(K++Na+) – (Cl-+S--)] (Oetzel, 1993). In winter months (November-February) dietary cation-anion difference ranged from 365 to 373 meq kg-1 DM. In studied months of winter season 83 cows calved, 9 of which were treated for milk fever and 5 for hypocalcaemia. In summer season (May-September) dietary cation-anion difference ranged from 27 to 238 meq -1kg DM. In studied months of summer season 73 cows calved, 6 of which were treated for milk fever and 3 for hypocalcaemia. |
| format | Article |
| id | doaj-art-9d9e751604a5498b9f00f5fb49d47ae3 |
| institution | DOAJ |
| issn | 1854-1941 |
| language | English |
| publishDate | 1999-12-01 |
| publisher | University of Ljubljana Press (Založba Univerze v Ljubljani) |
| record_format | Article |
| series | Acta Agriculturae Slovenica |
| spelling | doaj-art-9d9e751604a5498b9f00f5fb49d47ae32025-08-20T02:57:36ZengUniversity of Ljubljana Press (Založba Univerze v Ljubljani)Acta Agriculturae Slovenica1854-19411999-12-01742475210.14720/aas.1999.74.2.1587122264Dietary cation-anion difference in rations for pregnant dried off cowsMarija RAJČEVIČ0Jože LEVSTEK1Uroš RAJČEVIČ2Tone ILC3Poslovni sistem Mercator, d.d., Dunajska 107, SI-1113 Ljubljana, SloveniaM-Kmetijsko gospodarstvo Kočevje, Kolodvorska 25, SI-1330 Kočevje, SlovenijaMedicinska fakulteta, Inštitut za biokemijo, Vrazov trg 2, SI-1000 Ljubljana, SlovenijaM-Kmetijsko gospodarstvo Kočevje, Kolodvorska 25, SI-1330 Kočevje, SlovenijaOn a farm with 230 Friesian cows, winter and summer nutrition of highly pregnant dry cows was studied. Dietary cation-anion difference in the rations (DCAD) was calculated to estimate its possible connection with the incidence of milk fever and hypocalcaemia in cows. In winter season daily ration was composed of 3 kg of hay, 10-13 kg of grass silage and 10-13 kg of maize silage, with 1 kg of concentrate and 50 g of min.-vit. mixture. During summer season cows grazed and were additionally fed 3 kg of hay and 8 kg of maize silage till mid June, then until the end of season the maize silage was replaced by 10 of grass silage. A week before expected date of calving, cows were fed an additional 2 kg of concentrate. Throughout the dry period the cows were also fed 100 g of min.-vit. mixture. Dietary cation-anion difference was estimated as milliequivalent (meq) per kg of DM [(K++Na+) – (Cl-+S--)] (Oetzel, 1993). In winter months (November-February) dietary cation-anion difference ranged from 365 to 373 meq kg-1 DM. In studied months of winter season 83 cows calved, 9 of which were treated for milk fever and 5 for hypocalcaemia. In summer season (May-September) dietary cation-anion difference ranged from 27 to 238 meq -1kg DM. In studied months of summer season 73 cows calved, 6 of which were treated for milk fever and 3 for hypocalcaemia.https://journals.uni-lj.si/aas/article/view/15871cattlecowsdairy cowsdried off cowspregnancyanimal nutritionfeedcation-anion difference |
| spellingShingle | Marija RAJČEVIČ Jože LEVSTEK Uroš RAJČEVIČ Tone ILC Dietary cation-anion difference in rations for pregnant dried off cows Acta Agriculturae Slovenica cattle cows dairy cows dried off cows pregnancy animal nutrition feed cation-anion difference |
| title | Dietary cation-anion difference in rations for pregnant dried off cows |
| title_full | Dietary cation-anion difference in rations for pregnant dried off cows |
| title_fullStr | Dietary cation-anion difference in rations for pregnant dried off cows |
| title_full_unstemmed | Dietary cation-anion difference in rations for pregnant dried off cows |
| title_short | Dietary cation-anion difference in rations for pregnant dried off cows |
| title_sort | dietary cation anion difference in rations for pregnant dried off cows |
| topic | cattle cows dairy cows dried off cows pregnancy animal nutrition feed cation-anion difference |
| url | https://journals.uni-lj.si/aas/article/view/15871 |
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