4Spain J. Mastitis in the modern dairy cow and the role of nutrition and management [M]//Taylor-Pickard J A,Tucker L A. Redefining min- eral nutrition. Nottingham University Press, 2005: 241-252.
5Rafiq K, Mostofa M, Saiful M. Studies on the antinematodal effects of medicated urea-molasses-mineral blocks against gastrnintestinal nem- atodiasis in indigenous dairy cows of Bangladesh [ J ]. Pakistan Journal of Biological Sciences, 2004,7 ( 1 ):73-78.
6Boland T M, Brophy P O, Callan J J, et al. Improving dairy cattle prod- uetion through RIA (radioimmunoassay) and UMMB (area molasses mineral block ) [J] .Agriculture, 2003,7 ( 10 ) : 30-31.
7Toppo S, MehraU R, Dass R S. Effect of urea supplementation to urea molasses mineral block ( UMMB )lick on nutrient utilization and rumen fermentation pattern in crossbred cattle [ J ]. Indian Journal of Animal Sciences, 2000,70 ( 4 ) : 415 -418.
8Andesron P T,Begen W G,Mekrel R A.The relationship between composition of gain and circulating hormones in growing beef bulls fed thr dietary crude protein levels[ J ]. J Anita Sci, 1988,66: 3059-3067.