^pof;
Energy;
and;
Technology;
Swedish;
University;
of;
Agricultural;
Sciences;
Box;
7032;
Uppsala;
75007;
Sweden;
Engineering;
KNUST;
Ghana;
^pde;
Zaragoza;
Catedra;
de;
Produccion;
Animal;
Facultad;
Veterinaria;
50013;
Spain;