5Devendra, C, McLeroy, G.B. Goat and sheep production in the Tropics. In: Intermediate Tropical Agricultural Series [ M ]. Longman, London /New York, 1982, p. 271.
6Silanikove, N, The physiological basis of adaptation in goats to harsh environments [ J ] . Small Rumin.Res, 2000,35(3) :181 - 193.
7Lu,C.D, Grazing behaviour and diet selection of goats[J]. Small Rumin. Res, 1988,1(3) :205-216.
8Landau, S, Provenza, F, Silanikove, N.Feeding behaviour and utilization of vegetation by goats under extensive systems. In: Proceedings of the Seventh ICG[C], Vol.1,2000, pp. 47 - 52.
9Morand - Fehr, P, Boutonnet, J.P, Devendra, et al. Strategy for goat farming in the 21 st centttry[J]. Small Rumin. Res, 2004,51(2) : 175 - 183.
10Lebbie, S. H. B, Ramsay, K. A. Perspective on conservation and management of small ruminant genetic resources in the sub - Saharan Africa[J]. Small Rumin. Res, 1999, 34(3):231-247.
