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Browsing Research Articles (Animal and Wildlife Sciences) by UP Author

Browsing Research Articles (Animal and Wildlife Sciences) by UP Author "Coertze, R.J. (Roelof Johannes)"

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Carcass composition of Venda indigenous scavenging chickens under village management

Raphulu, Thomas; Jansen van Rensburg, Christine; Coertze, R.J. (Roelof Johannes) (Kassel University Press, 2015-05)

Four Venda indigenous scavenging (VIS) chickens (one young male and one young female of 10–16 weeks of age, a mature cockerel and a mature hen) were randomly purchased from each of six adjacent rural villages during ...
Effect of diets differing in rumen soluble nitrogen on utilization of poor-quality roughage by sheep

Mentz, A.M.; Van Niekerk, Willem A.; Hassen, Abubeker; Coertze, R.J. (Roelof Johannes); Gemeda, B.S. (Belete Shenkute) (South African Society for Animal Science, 2015-12-14)

This study investigated the effects of replacing rapid-release nitrogen (N) from urea with a graded level of slow-release N (Optigen® II) source on intake, digestibility, rumen fermentation and microbial protein synthesis, ...
Influence of species/cultivar and season on the quality of Atriplex grown at different sites in South Africa

Van Niekerk, Willem A.; Hassen, Abubeker; Vermaak, P.J.; Coertze, R.J. (Roelof Johannes) (South African Society for Animal Science, 2009)

Atriplex species/cultivars [Atriplex nummularia, A. canescens (Santa Rita) and A. canescens (Field Reserve 1)] were compared in terms of chemical composition and in vitro digestibility. The plant material was sampled at ...
Supplementation of selenium to sheep grazing kikuyu or ryegrass : I. Selenium status of unsupplemented sheep and animal performance upon supplementation

Van Ryssen, J.B.J.; Coertze, R.J. (Roelof Johannes); De Villiers, J.F. (South African Society for Animal Science, 1999)

The selenium (Se) status of lambs grazing kikuyu (Pennisetum clandestinum) or ryegrass (Lolium multiflorum) in the KwaZulu-Natal Midlands was determined during four trials and their growth response to Se supplementation ...
Supplementation of selenium to sheep grazing kikuyu or ryegrass : II. Effect on selenium concentration in the grass and body tissues

Van Ryssen, J.B.J.; Coertze, R.J. (Roelof Johannes); De Villiers, J.F. (South African Society for Animal Science, 1999)

The investigation entailed four trials in which selenium (Se) was supplemented to lambs grazing kikuyu (Pennisetum clandestinum) pastures during two summer periods or Italian ryegrass (Lolium multiflorum) pastures during ...
Time-dependent effect of selenium supplementation on the relationship between selenium concentrations in whole blood and plasma of sheep

Van Ryssen, J.B.J.; Coertze, R.J. (Roelof Johannes); Smith, Marie F. (Elsevier, 2013-05)

The ratio between selenium (Se) concentrations in pairs of plasma and whole blood of sheep after commencement of Se supplementation was calculated from data obtained from 10 independent investigations. The diets in the ...

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Browsing Research Articles (Animal and Wildlife Sciences) by UP Author "Coertze, R.J. (Roelof Johannes)"

Browsing Research Articles (Animal and Wildlife Sciences) by UP Author "Coertze, R.J. (Roelof Johannes)"

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