Bibliografia

WEBSTER, J. ((1993)) Uderstanding the Dairy Cow, second edition. BSP Professional books, Oxford OX2 0EL, 357 pp. null
Coop, I.E., (1992.) Sheep And Goat Production (Word Animal Science. C. 1) Ed. I.E. Coop, Elsevier Scientific Publishing Company, Amsterdam. null
Whittemore C.T., (1993.) The Scieence and Practice of Pig Production. Longman Scientific and Technical, Longman Group Essex CM20 2JE. England. null
Poultry Production, (1995.) (World Animal Science C. 9). Ed. P. Hunton. Elsevier scientific Publishing Company, Amesterdam null

Haresign, H., (1983.) Sheep Production. Ed. Butterworths, Dorough Green, Sevenoaks, Kent TN 158 PH, England null
EAAP Publication N.º 71, (1995.) Goat Production Sistems in the Mediterrenean. Ed. A. El Aich, S. Landau, A. Bourbouze, R. Rubino and P. Morand-Fehr. Wageningen. null