3Ladetto G, Sarra C. The use of copper as a growth factor for rabbit: Effects of cooper sulphate and oxide on the fatty acid composition of liver lipids and depot fats Annall - della Facolta- di Mediclna Veterlnarla- di Torino, 1981, 28:346 -357
4Patten N M, Harry D J. The effect of dietary copper sulfate on enteritis in fryer rabbits, ournal of Applied Rabbitt Research, 1982, 5(3): 78 - 82 rabbits Veterinarnaya Nauka-Proizvdstvu. 28:182 - 188
5Bassuny S M. The effect of copper sulfate supplement on rabbit performance under Egyptian condition, Journal of Applied Rabbits Reasearch, 1991, 14(2) :93 - 97