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"Experientia docet" - Experience is the best teacher

The stability of genetic markers as identified in goats

  • 1987
  • Issue: 3
  • Volume: 17
D.R. Osterhoff, D.O. Schmid & S.M. Schoeman Page: 133 - 137

The first part of the investigation included a study of the frequency of blood factors in different goat breeds from Europe and South Africa using sheep blood typing reagents detecting related red cell antigens in the goat. It appeared that…

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Occurrence of oestrus in the Boer goat doe (Short communication)

  • 1987
  • Issue: 3
  • Volume: 17
J.P.C. Greyling & C.H. van Niekerk Page: 147 - 149

Scrotal circumference in young beef bulls:  Relationships to growth traits The natural occurrence of oestrus in Boer goat does was recorded for the period 1980 - 1982. Although periods of complete anoestrus were never observed, it would appear that the…

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The genetic structure of the Jersey breed in South Africa

  • 1987
  • Issue: 4
  • Volume: 17
J.S. Allan Page: 153 - 156

An analysis of the pedigrees of a random sample of 100 South African-bred first-calf Jersey heifers registered in 1985 showed that most breeders have concentrated on a closely interrelated group of Marlu animals and their descendants. Of the 17 young…

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Nuwe ontwikkelings in pluimveevoeding

  • 1987
  • Issue: 4
  • Volume: 17
G.A. Smith & K. de Beer Page: 157 - 167

  A review is given of developments in poultry nutrition, with specific reference to aspects concerning the broiler industry. The role of fat in feeds and its influence on body composition are discussed. Attention is paid to the importance of…

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Sweet lupins as a feedstuff for broilers

  • 1987
  • Issue: 4
  • Volume: 17
M.D. Olver Page: 168 - 170

An experiment was conducted to determine the feeding value of sweet white lupins (Lupinus albus variety Buttercup) for broilers up to 8 weeks of age. Two isocaloric and isonitrogenous starter (0 - 4 weeks) and finisher (4 - 8 weeks)…

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Nutrient content of sorghum beer strainings

  • 1987
  • Issue: 4
  • Volume: 17
I.V. van Heerden Page: 171 - 175

A study was carried out to determine what contribution the consumption of sorghum beer strainings (SBS) could make towards animal nutrition. Sorghum beer strainings were analysed for starch, protein, fat, crude fibre, ash, minerals and phytate content on a dry…

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Improvements in the large scale artificial propagation of the sharptooth catfish, Clarias gariepinus (Burchell), in South Africa

  • 1987
  • Issue: 4
  • Volume: 17
L. Polling, B.C.W. van der Waal & H.J. Schoonbee Page: 176 - 180

Induced spawning procedures developed under local conditions in the Transvaal for the sharptooth catfish, Clarias gariepinus, using a combination of the chorionic gonadotrophin Chorulon with pituitary gland homogenate from the European common carp, Cyprinus carpio, or from C. gariepinus donors,…

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Milk iodine determination: The suitability of milk samples collected in the South African Milk Recording Scheme (Short communic

  • 1987
  • Issue: 4
  • Volume: 17
J.B.J. van Ryssen, M.M. Hundley & S. van Malsen Page: 181 - 183

Milk samples collected for analysis in the South African Milk Recording Scheme are routinely preserved by the addition of potassium dichromate. The influence of this preservative, the duration of storage temperatures (O °C or room temperature) and effect of temperature…

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