M. Panayotov* Department of Animal science-Non-ruminant and other animals, Faculty of Agriculture, Trakia Univercity, 6000, Stara Zagora, Bulgaria (Manuscript received 5 May 2016; accepted for publication 11 August 2016) Abstract. The subject of research are Bombyx mori L. cocoons, di

M. Panayotov* Department of Animal Science – Non-ruminants and other animals, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria (Manuscript received 11 April 2016; accepted for publication 26 May 2016) Abstract. The goal of the present study was to determine the i