PF 03. Sward characteristics and winter performance of growing steers on native pasture

  • Claudio Rinaldi Facultad de Agronomía, Paysandu, Uruguay
  • Pablo Soca Universidad de la Republica, Montevideo, Uruguay
  • F. Apeztequia Universidad de la Republica, Montevideo, Uruguay
  • R. Orcasberro Universidad de la Republica, Montevideo, Uruguay


To study the Influence of some swards characteristics on weight daily gain (GDM) of Holstein steers in winter a trial was carried out between 04.29.91 and 07.22.91. 24 steers with inicial live weight (PIE) of 110 ± 25 kg were randomly asigned to the following forage allowances: 2.5, 5.0, 7.5 and 10.0 kg DM/100kg LW/day, adjusted by put and take method. The rotative grazed was with 7 days ocupation and 35 days rest. The sward measures were forage availability (DM/ha), sward height (ALT) and ungrazed areas at the begining (DISP) and the end (RECH) of each grazing period. Live weight was recorded every 7 days after 12 hours fasted. The GDM g/animal/day) was determinated by regression anlisys. The models that fits better for the animals performance were: GDM= 0.27 + 0.06ALTDISP - 0.006PIE (r2 = 0.70; CMe = 0.001; P < .01) and GDM = 0.212 + 0.007ALTRECH - 0.004PIE (r2 = 0.60; Cme = 0.008; P < .01). It permit to conclude, for the local condition, it is possible for the animals not to loose weight in winter grazing sward height over 3 cm.


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How to Cite
Rinaldi, Claudio, Pablo Soca, F. Apeztequia, and R. Orcasberro. 2005. “PF 03. Sward Characteristics and Winter Performance of Growing Steers on Native Pasture”. Latin American Archives of Animal Production 5 (3).