response patterns of luteinizing hormone , follicle-stimulating hormone , and testosterone after injection of gonadotropin-releasing hormone were investigated in bulls grouped by weight ( 250 to 459 kg body weight ) and confined five per pen in 9.2 or 6.4 m2 space per bull in two replicates .
C0733758
follicle-stimulating hormone
C0018061
gonadotropin