Optimization of protein supply of organic dairy cows
Abstract
Organic dairy cow nutrition is confronted with restrictions in the use and availability of protein concentrates, lower protein contents in feedstuffs and higher concentrate costs than conventional dairy nutrition. Regarding these issues and the target of achieving closed nutrient cycles in organic farming, maximal milk yields from forage and reduced external concentrate inputs seem important. In the present study, three feeding trials (one experiment per winter) with a dairy herd consisting of 20 cows are conducted. In the diet, clover grass silage, maize silage, hay, on-farm grown concentrates (barley, triticale, pea, lupin) and moderate amounts of external concentrates are used. By synchronising ruminal protein and energy supply from on-farm grown feed sources, oppportunities and limitations for forage use and concentrate reduction are investigated. Furthermore, the potential for an increased use and efficiency of on-farm grown feed protein sources in dairy cow diets is examined. The objective of the present study is to optimise protein supply, milk production from forage and nutrient utilization efficiency and to maintain closed nutrient cycles.
animal nutrition organic farming dairy cow protein supply utilization efficiency
Publikationen
Eiweißversorgung der Milchkuh - Grundlagen und Konsequenzen für die praktische Fütterung
Autoren: Knaus, W., Velik M. Jahr: 2005
Conference & Workshop proceedings, paper, abstract
Project staff
Wilhelm Friedrich Knaus
Ao.Univ.Prof. Dipl.-Ing. Dr.nat.techn. Wilhelm Friedrich Knaus
wilhelm.knaus@boku.ac.at
Tel: +43 1 47654-93235
Project Leader
01.02.2005 - 30.09.2007
Michael Eder
Ass.Prof. Dipl.-Ing. Dr.nat.techn. Michael Eder
michael.eder@boku.ac.at
Tel: +43 1 47654-73313
Project Staff
01.02.2005 - 30.09.2007
BOKU partners
External partners
HBLA Ursprung
Direktor Dr. Wolfgang Stehrer
partner
HBLFA Raumberg-Gumpenstein
Dr. Andreas Steinwidder
partner