Browsing by UP Author "Lourens, D.C. (Dirk Cornelius)"

Browsing by UP Author "Lourens, D.C. (Dirk Cornelius)"

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  • Babala 
    Lourens, D.C. (Dirk Cornelius) (2006-06-27)
    Babala planted at Groblersdal for summer forage.
  • Dairy farm in Belgium 
    Lourens, D.C. (Dirk Cornelius) (2006-06-27)
    Free-stall barn on dairy farm in Belgium. Dairy cattle feeds on green chop and dry silage.
  • The effect of cow-level factors on colostrum quality, passive immunity and health of neonatal calves in a pasture-based dairy operation 
    Mulder, Riaan; Fosgate, Geoffrey Theodore; Tshuma, Takula; Lourens, D.C. (Dirk Cornelius) (CSIRO, 2018)
    A study of 95 cows (19 primiparous and 76 multiparous) and their offspring was performed on a pasture-based dairy in the coastal region of South Africa. Collected data included weight changes during the dry period, colostrum ...
  • The effect of unrestricted milk feeding on the growth and health of Jersey calves 
    Uys, J.L.; Lourens, D.C. (Dirk Cornelius); Thompson, P.N. (Peter N.) (South African Veterinary Association, 2011-03)
    This study was conducted to determine the effect of feeding high milk volumes on the growth rate, health and cross-sucking behaviour in group-fed Jersey calves. Three-day-old heifers (n = 120) in a seasonal calving dairy ...
  • Effective disease control 
    Lourens, D.C. (Dirk Cornelius) (Agri Connect, 2011-08)
    In South-Africa, communicable diseases are a major cause of livestock losses and it is disconcerting that so many preventable diseases still frequently result in substantial financial losses.
  • Intramammary infection rate during the dry period in cows that received blanket dry cow therapy : efficacy of 6 different dry-cow intra-mammary antimicrobial products 
    Petzer, Inge-Marie; Lourens, D.C. (Dirk Cornelius); Van der Schans, Theodorus J.; Watermeyer, Johanna C.; Van Reenen, R.; Rautenbach, G.H.; Thompson, P.N. (Peter N.) (South African Veterinary Association, 2009)
    The objectives of this study were to compare the efficacy of 6 different dry-cow intramammary antimicrobial products for the treatment and prevention of mastitis during the dry period in a well-managed high producing ...
  • Japanese radish 
    Lourens, D.C. (Dirk Cornelius) (2006-04-07)
    Bulb is large, cylindrical and very prominent. Japanese Radish is a well known and proven frost-tolerant winter forage suited to the cooler, higher rainfall crop growing regions of South Africa. Greater yields can be ...
  • Kikuyu grass 
    Lourens, D.C. (Dirk Cornelius) (2006-09-27)
    Kikuyu grass is used as feeding for dairy cattle on the farm Beeskor near Pretoria.
  • Korog 
    Lourens, D.C. (Dirk Cornelius) (2006-06-27)
    Korog is a hybrid between wheat and rye. Planted pasture at Vaalharts for winter forage.
  • Nguni cattle on a sorghum pasture 
    Lourens, D.C. (Dirk Cornelius) (2006-09-27)
    Nguni cattle grazing on a sorghum field in Doornpoort, Pretoria area, South Africa.
  • Oats 
    Lourens, D.C. (Dirk Cornelius) (2006-06-27)
    Oats planted at Onderstepoort, South Africa as winter forage for dairy cattle. Oats is classified as a small grain. Acidosis can occur when cattle consume too much in a short period of time.
  • Red clover (Trifolium pratense) 
    Lourens, D.C. (Dirk Cornelius) (2006-01-30)
    Red clover planted at Onderstepoort for autumn or spring forage for cattle. Red clover is a short-lived perennial and requires a short rotation. It establishes easily, has rapid spring growth, but lacks drought tolerance. ...
  • Wheat 
    Lourens, D.C. (Dirk Cornelius) (2006-06-27)
    Wheat planted at Onderstepoort for winter forage. Wheat is classified as a small grain. Acidosis can occur when cattle consume too much carbohydrates (primarily grain) in a short period of time.