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| Barth, Dr. Kerstin; Franze, Ulrike. |
| According to the rules of organic farming, prophylaxis shall be supported by selection of appropriate breeds. Nevertheless, today high yielding breeds predominate in organic dairy herds. Since 2004 the Institute of Organic Farming in Trenthorst compares two breeds under the same management conditions on its experimental farm. The evaluation of the data gained between March 2006 and March 2008 revealed a higher treatment rate in the milk orientated Holstein-Friesian cows compared to the German Red Pied, a local dual purpose breed. Although treatment of claw disorders were much more frequent in Holstein-Friesian cows, the lameness scoring carried out every fortnight did not show any difference between the two breeds (Chi2 3=3.506, n. s.). In 24 of... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Health and welfare; Breeding and genetics. |
| Ano: 2009 |
URL: http://orgprints.org/14009/1/Barth_14009.pdf |
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| Barth, Dr. Kerstin; Schneider, Regula; Roth, Béatrice; Hillmann, Dr. Edna. |
| The introduction of mother-bonded calf rearing into organic dairy farming faces some problems. Regarding the cow, the disturbed milk ejection seems to be the most important one. We compared two groups of cows, which had permanent (Kp, n=11) or temporarily (Kt,n=13) contact to their calves until the 90th day p.p. with cows separated from their offspring within 24 h after calving (Ko, n=24). Since suckling following the machine milking strongly influences milk ejection, the Kt-cows were allowed to meet their calves 15 minutes before the usual milking times (milking interval 10:14 hours) in a separated area. Milk flow curves were recorded at the 6th day after calving and afterwards every fortnight at least until the 90th day of lactation. At the same... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Health and welfare. |
| Ano: 2009 |
URL: http://orgprints.org/14021/1/Barth_14021.pdf |
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| Barth, Dr. Kerstin; Brinkmann, Jan. |
| Mastitis, metabolic disorders and lameness are still the most important diseases in German organic dairy herds and cause enormous financial losses as well as pain in the animals suffering from these diseases. This project focuses on the development of prevention-oriented health management strategies in organic dairy farms and aims to validate this approach through an interdisciplinary on-farm intervention study. In total 14 institutions are involved. To assess the risk of metabolic disorders and mastitis a national field survey of 100 organic dairy farms is used considering the system of production from the plant populations of the grassland, the quality of feedstuff to housing conditions and milk quality to name but a few examples of the data... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Systems research and participatory research; Dairy cattle; Health and welfare. |
| Ano: 2009 |
URL: http://orgprints.org/14027/1/Barth_14027.pdf |
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| Barth, Dr. Kerstin. |
| According to the EU-Regulation for organic farming breeds chosen for the organic production should have the capacity to adapt to the local conditions to reduce the risk of diseases. The study compared the udder health status and the necessity of application of dry cow therapy (DCT) on cows of a dual purpose and a milk breed (Red and White Holsteins vs. Holstein-Friesian) kept under the same management conditions. Data records of one and a half year and 49 cows were analysed. 132 of 203 udder quarters were treated with an antibiotic at drying off. The treated quarters had significant higher readings for electrical conductivity, California Mastitis Test and the somatic cell count during lactation than the untreated group. Red and White Holstein cows received... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Health and welfare. |
| Ano: 2008 |
URL: http://orgprints.org/11766/1/Barth_11766_ed.doc |
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