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"Experientia docet" - Experience is the best teacher

Fraksionering van sonneblomoliekoekmeel en die gebruik van die lae veselfraksie saam met volvetsojaboonmeel as plaasvervanger vi

  • 1988
  • Issue: 4
  • Volume: 18
L.G. Ekermans, H.H. Meissner, C. Maree en L. du Plessis Page: 137 - 142

Fractionation of sunflower oilcake meal and use of the low-fibre fraction together with full-fat soy-bean meal as a replacement for fish-meal in broiler diets. Nutrient concentrations of various fractions of sunflower oilcake meal were studied by sieving the meal through…

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Diagnosis of pregnancy in dairy cows based on the pregosterone content of milk. Part 1. Discriminating between pregnant and non

  • 1988
  • Issue: 4
  • Volume: 18
W.A. Butterfield, M.C. Lyne & A.W. Lishman Page: 150 - 152

A linear discriminant function (LDF) was used to estimate the level of milk progesterone which allowed the best overall classification of dairy cows into pregnant and non-pregnant groups (confirmed by rectal palpation). Progesterone levels were measured in milk samples drawn…

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The effect of an induced copper deficiency on the total plasma copper and unconjugated plasma progesterone concentrations during

  • 1988
  • Issue: 3
  • Volume: 18
F.E. van Niekerk, C.H. van Niekerk & J.C. Morgenthal Page: 83 - 87

The effect of a copper deficiency on certain aspects of reproduction in ewes was investigated. An effective copper deficiency was induced by using the copper antagonists cadmium, calcium and sulphate. An average decline in the plasma copper concentration from 160…

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