期刊
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
卷 93, 期 1, 页码 93-99出版社
WILEY
DOI: 10.1002/jsfa.5735
关键词
bovine milk; fatty acids; sensory evaluation; antioxidants; feeding
资金
- Danish Ministry of Food, Agriculture and Fisheries
- Danish Cattle Federation
BACKGROUND: The objective of this study was to investigate how some small changes in the forage content of maize and lucerne silage and in the ration between forage and concentrate in the diet of dairy cows affect milk quality. Milk quality was assessed by quantitative descriptive sensory analysis and by analysis of tocopherols and carotenoids as well as fatty acid composition. RESULTS: Changing the ratio between maize silage and lucerne silage from 5 : 1 to 2 : 1 increased milk fat content of carotenoids (23-27%) and C18 : 3 n3 (15%), and reduced stale aroma and creamy flavour. Increasing the proportion of concentrates in the feed ration from 0.2 to 0.4 increased energy corrected milk yield (26%), reduced fat content (-10%), increased C18 fatty acids (8-62%) and reduced C16 (-20%) content inmilk fat. In addition, this milk type was described by the sensory panel as less oily, less saturated and less yellow. The changes inmilk composition were related to differences in feed composition. CONCLUSION: The study revealed the potential to producemilk with a distinct composition and sensory quality based on even small changes in the feed composition that are straightforward to implement by farmers. (C) 2012 Society of Chemical Industry
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