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| 2. |
- Ahlman, Therese, et al.
(författare)
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Organic producers' preferences regarding traits important in dairy production
- 2012
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Ingår i: Landbauforschung Völkenrode. Sonderheft. - 0376-0723. ; 362, s. 343-346
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Konferensbidrag (refereegranskat)abstract
- Much effort has been put on the development and promotion of organic dairy products, but little attention has been paid to the foundation of the production, i.e. the animal material. The process of developing sustainable breeding strategies, in agreement with the goals for organic production, should involve identification of traits especially important in organic production. The aim of this study is to identify organic and conventional producers' preferences regarding traits important in dairy production. A web based questionnaire has been developed and answered by 468 dairy farm-ers in Sweden (26 % organic producers). The results show that organic producers rank traits relat-ed to resistance to diseases higher than conventional producers, while milk production, lactation curve, temperament and claw and leg health were ranked higher by conventional farmers. This in-dicates a need for breeding goals adjusted to satisfy farmers with different type of production.
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| 4. |
- Johansson, Birgitta, et al.
(författare)
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Effects of vitamin status and health in dairy cows fed without synthetic vitamins
- 2012
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Ingår i: Landbauforschung Völkenrode. Sonderheft. - 0376-0723. ; , s. 394-397
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Konferensbidrag (refereegranskat)abstract
- Synthetic vitamin supplementation is not consistent with organic production and it is important to investigate how dairy cows manage without synthetic vitamin supplementation. The study aimed to compare the performance of cows given no synthetic vitamins (NSV) with cows (control; C) fed synthetic vitamins according to Swedish recommendations. Swedish Holstein cows (n=28) fed a 100 % organic diet were studied during two lactations. Vitamin status in cow plasma and milk, milk yield and composition, health and fertility were measured. From each cow, five blood and five milk samples were collected during lactation. In first lactation, C cows tended to have a higher concentration of α-tocopherol and their β-carotene concentration was higher compared to NSV cows. The C cows tended to have fewer cases of mastitis than NSV cows in the second lactation. No differences were found in production and fertility. In conclusion, dairy cows need vitamin A and E supplement, at least around calving when the requirements are high.
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| 6. |
- Sellman, Stefan, et al.
(författare)
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Reducing the amount of slaughter transports in modern Swedish cattle production systems
- 2012
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Ingår i: Tackling the Future Challenges of Organic Animal Husbandry. - Braunschweig : Johann Heinrich von Thünen-Institut. - 9783865760944 ; 362, s. 262-265
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Konferensbidrag (refereegranskat)abstract
- Two methods that can help to reduce the distances involved in transportation of cattle to slaughter are presented, route optimization and spatial redistribution of slaughter capacities. In a comparison ot three route optimization techniques we show that RuttOpt is the most effective and that the number of stops on routes can be reduced compared to what is the case today. We also find that transport distances can be reduced by 40 % compared to the real transports of 2008 if animals are sent to the closest available facilities. We believe that the metods highlighted here can help improve the sustainability and animal health in both organic and conventional farming.
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