Johansson, Birgitta
- Institutionen för tillämpad husdjursvetenskap och välfärd, Sveriges lantbruksuniversitet
Sammanfattning
Organic dairy production will be based entirely on organically grown feeds as of 2008, and thereby a demand is created to find suitable feeds that are possible to grow locally. The aim of this experiment was to investigate whether milk yield and milk composition were maintained when cows were fed a 100% organic diet, with around 15% of dietary DM from cold-pressed organic rapeseed cake, compared to a 95% organic diet, in which a conventional protein source was used. Two experimental groups included 20 cows each and the study was carried out during two indoor periods. For cows fed the rapeseed cake diet, milk yield increased by 3.0 kg/day, but contents of milk fat and milk protein of multiparous cows decreased, resulting in similar yields of energy-corrected milk in early lactation. Milk from cows fed rapeseed cake had increased content of unsaturated fatty acids, including conjugated linoleic acid. In conclusion, it is possible to maintain milk production of dairy cows fed 100% organic feedstuffs using cold-pressed rapeseed cake as the main protein source compared to a 95% organic ration.
Nyckelord
fatty acids; feed; milk composition; milk yield; organic dairy production; protein
Publicerad i
Acta Agriculturae Scandinavica, Section A - Animal Science
2006, volym: 56, nummer: 45720, sidor: 128-136
Utgivare: TAYLOR & FRANCIS AS
SLU författare
Nadeau, Elisabet
- Institutionen för tillämpad husdjursvetenskap och välfärd, Sveriges lantbruksuniversitet
- Institutionen för tillämpad husdjursvetenskap och välfärd, Sveriges lantbruksuniversitet
UKÄ forskningsämne
Husdjursvetenskap
Veterinärmedicin
Publikationens identifierare
- DOI: https://doi.org/10.1080/09064700701216912
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/14366