Huchzermeyer, Fritz W.; De Ruyck, An M.C.; Van Ark, H.; Bigalke, R.D.(Published by the Government Printer, Pretoria., 1988)
Broilers of 4 different commercial strains were kept during winter at an altitude of 1 350m. The birds were slaughtered at weekly intervals and their relative right ventricular mass (pulmonary arterial pressure index = API ...
