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pro vyhledávání: '"Jochen Wolf"'
Autor:
Jochen Wolf
Publikováno v:
BIOspektrum. 28:112-112
Publikováno v:
Journal of Dairy Science. 97:1092-1106
Improving the feed efficiency of dairy cattle has a substantial effect on the economic efficiency and on the reduction of harmful environmental effects of dairy production through lower feeding costs and emissions from dairy farming. To assess the ec
Publikováno v:
Livestock Production Science. 43:63-73
The economic weights for net daily gain, dressing percentage and average class of fleshiness and fat covering were calculated for Czech Pied cattle. They were defined as the partial derivatives of the discounted profit function with respect to the ev