ALL libraries (COBIB.SI union bibliographic/catalogue database)
13.
Multi-goal optimization process for formulation of daily dairy cow rations on organic farms : a Slovenian case study
Prišenk, Jernej ; Turk, Jernej ; Pažek, Karmen
A model for the optimization of daily feed rations for dairy cows on organic farms was developed and tested on a real case study (organic farm) from Slovenia. The methodological approach was based on ...a combination of linear programming (LP) and weighted goal programming (WGP) techniques. For the formulation of balanced rations, penalty function intervals were introduced. The model took into account five different nutritional and mineral requirements and it precisely calculated the daily rations for dairy cows. This model was used to calculate winter and summer rations using two different scenarios (WGP SC1 and WGP SC2 ), where the net energy for lactation and the total cost of the rations each had a significantly different importance in the optimization process. The results show the WGP sc2 feed rations are more expensive (summer for 1.19 %and winter for 1.10 %) and more balanced compare to WGP sc1 and LP feed rations. WGP sc1 feed rations have the same costs and also more balanced compare to LP feed rations. The balance of the feed rations confirms the fact that deviations from the daily nutrient requirements (never exceeded more than 1%) in the WGP are much lower in comparison to the LP rations.
It was not necessary to add the material to the shelf.
Bibliographic material was successfully added on shelf.
Adding bibliographical material on shelf was not successful.
Material is already on the shelf.
Permalink
URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year
Impact factor
Edition
Category
Classification
JCR
SNIP
JCR
SNIP
JCR
SNIP
JCR
SNIP
Select the library membership card:
DRS,
in which the journal is indexed
Database name
Field
Year
Links to authors' personal bibliographies
Links to information on researchers in the SICRIS system
Subject headings in COBISS General List of Subject Headings
Select pickup location
The material from the parent unit is free. If the material is delivered to the pickup location from another unit, the library may charge you for this service.
