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| Oudshoorn, F.W.; de Boer, I.J.M.. |
| The objective of this research, was to quantify sustainability indicators of organic dairy farms using Automatic Milking Systems (AMS), and a comparative group of organic dairy farms using conventional milking systems (CMS). Milk yield per cow was higher for AMS farms but did not result in higher net return to management. Nitrogen surplus per ha of available land was higher for AMS farms, Animal health was unaffected by AMS use, as also most milk quality aspects; somatic cell count, clostridium spores and urea. Acid degree value (ADV), measured as free fatty acids (FFA) in the milk, was higher in milk from AMS users. Labour time was decreased by almost 50% for AMS users, to 2.3 min/cow/day. It could be concluded from quantification of selected indicators... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Buildings and machinery; Technology assessment; Air and water emissions. |
| Ano: 2008 |
URL: http://orgprints.org/11682/1/11682.pdf |
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| van Hal, O.; de Boer, I.J.M.; Müller, A.; de Vries, S.; Erb, K.-H.; Schader, C.; Gerrits, W.J.J.; van Zanten, H.H.E.. |
| Consumption of animal-source food is criticised, among other reasons, for its relatively high environmental impact. It is, however, increasingly acknowledged that livestock can contribute to nutrition security if they upcycle low-opportunity-cost feed (LCF) – food waste, food processing by-products and grass resources – into nutritious animal-source food. So far, however, no study explored the allocation question “to which livestock should we feed what LCF to maximise livestock's contribution to human nutrition”. Here we optimise the use of the LCF available in the EU, using a model that assigns LCF to those livestock systems that maximise animal protein production. We included the five most common livestock systems in the EU – pigs, laying hens, broilers,... |
| Tipo: Journal paper |
Palavras-chave: Recycling; Balancing and resource management Health and welfare Environmental aspects. |
| Ano: 2019 |
URL: http://orgprints.org/34995/1/VanHal-etal-2019-JofCleanerProduction-Vol219-p485-496.pdf |
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