home    about    browse    search    latest    help 
Login | Create Account

Feed production on farms without animals is not environmentally sustainable

Steinshamn, Håvard; Bleken, Marina A and Thuen, Erling (2006) Feed production on farms without animals is not environmentally sustainable. Paper at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

[thumbnail of steinshamn_bleken_thuen_N_util.doc] Source file - English
[thumbnail of 7500_Steinshamn.pdf] PDF - English


Use of high energy feed supplementation can improve the protein retention by the cattle, and it has been suggested as a way to increase the nitrogen (N) effi-ciency of dairy production. However, in praxis feed supplementation is also used to increase the intensity of animal production above the level that can be supported by the farm's local plant production. A collection of published surveys showed that dairy farms that buy feed are considerably lees N efficient than farms that supply the entire animal ration from their own plant production. The total N emission to the environment per litre milk doubled when 30% of the total feed ration was produced outside the dairy farm. This was so for organic as well as conventional farms. Similar results can be expected for phosphorous and other nutrients. In order to ensure a sustainable and environmentally friendly organic production, imports of feed produced far away from the dairy farm should be strictly limited. We suggest a ceiling of 5 - 10% of total feed ration.

EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Subjects: Farming Systems
Animal husbandry > Production systems > Dairy cattle
Farming Systems > Farm nutrient management
Animal husbandry > Production systems
Research affiliation: International Conferences > 2006: Joint Organic Congress > Theme 1: Research in sustainable systems
Deposited By: Steinshamn, Dr Håvard
ID Code:7500
Deposited On:09 May 2006
Last Modified:12 Apr 2010 07:32
Document Language:English
Refereed:Not peer-reviewed

Repository Staff Only: item control page


Downloads per month over past year

View more statistics