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"Experientia docet" - Experience is the best teacher

Voluntary intake and quality of diet selected by cattle grazing bana grass, kikuyu and forage sorghum

  • 1992
  • Issue: 1
  • Volume: 22
H.H. Köster, H.H. Meissner, R.J. Coertze and N.F.G. Rethman Page: 35 - 41

Bana grass (Pennisetum purpureum x P. amerieanum) was compared with kikuyu (P. clandestinum) and forage   sorghum (Sorghum bicolor) with respect to quality of samples ;elected by four oesophageally fistulated steers. Hand-cut samples of the three forages were also compared…

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Between-flock genetic differences in 40 Merino studs

  • 1992
  • Issue: 6
  • Volume: 22
D.G. Poggenpoel and C.A. van der Merwe Page: 175 - 180

Breeding values of production traits, relative to a genetic control flock, were estimated for 40 registered Merino studs. Breeding values, expressed as a percentage deviation from the control flock, varied from -16.7 to 31.2 for body mass, -6.4 to 28.1…

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Quantitative aspects of semen imports for South African dairy breeds

  • 1992
  • Issue: 3
  • Volume: 22
H.E. Theron, J.H. Hofmeyr and S.J. Schoeman Page: 87 - 91

Dairy cattle semen imported from January 1979 to June 1989 consisted of 72% Holstein-Friesian, 13.6% Jersey, 11.5% Ayrshire and 2.8% Guernsey semen. There has been a significant increase in the importation of Holstein-Friesian semen and, to a lesser extent, in…

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