01114naa a2200205 a 450000100080000000500110000800800410001910000250006024502050008526000090029052004300029965000150072965000240074465300120076865300140078070000180079470000160081270000180082877300620084613657782011-10-20       1967    bl ---       0--  u    #d1 aTABARELL NETO, J. F.  aObservations on the reproductive patterns in zebu cattle raised in range conditions in the state of S. Paulo, BrazilbIV annual incidence of calvings and conceptions, sex ratio.h[electronic resource]  c1967  aThe great need for information about reproductive patterns in zebu cattle raised in range conditions in Brazil, are obvious. The vast beef breeding areas are located mainly in the tropics and such kind of cattle raising is one of the most economical importance for the country. The data applied to reproductive perfomance are scanty, particularly because the collection of vital statistics for range beef cattle is difficult.  aFisiologia  aReprodução Animal  aBovinos  aRaca zebu1 aBARROS, H. M.1 aBIZUTTI, O.1 aREINER, U. R.  tArquivos da Escola de Veterinariagv. 19, p. 47-58, 1967.