Works matching AU Van Ryssen, J. B. J.

Results: 18

Assessing nutrient adequacy from the crop contents of free-ranging indigenous chickens in rural villages of the Venda region of South Africa.

Published in:

South African Journal of Animal Science, 2015, v. 45, n. 2, p. 143, doi. 10.4314/sajas.v45i2.5

By:

Raphulu, T.;
Jansen van Rensburg, C.;
van Ryssen, J. B. J.

Publication type:

Article

Different levels of macadamia oil cake meal, and wood ash vs. feed lime as dietary sources of calcium on bone characteristics of slow-growing chickens.

Published in:

South African Journal of Animal Science, 2014, v. 44, n. 1, p. 71, doi. 10.4314/sajas.v44i1.10

By:

van Ryssen, J. B. J.;
Phosa, M. A.;
van Rensburg, C. Jansen

Publication type:

Article

A South African perspective on livestock production in relation to greenhouse gases and water usage.

Published in:

South African Journal of Animal Science, 2013, v. 43, n. 3, p. 247, doi. 10.4314/sajas.v43i3.2

By:

Scholtz, M. M.;
van Ryssen, J. B. J.;
Meissner, H. H.;
Laker, M. C.

Publication type:

Article

A balanced perspective on animal production, from environment to human health.

Published in:

South African Journal of Animal Science, 2013, v. 43, n. 3, p. 229

By:

van Ryssen, J. B. J.

Publication type:

Article

Selenium concentration of maize grain in South Africa and possible factors influencing the concentration.

Published in:

South African Journal of Animal Science, 2012, v. 42, p. 455, doi. 10.4314/sajas.v42i5.2

By:

Courtman, C.;
van Ryssen, J. B. J.;
Oelofse, A.

Publication type:

Article

Changes in nutrient composition of kikuyu foggage as winter progressed.

Published in:

South African Journal of Animal Science, 2008, v. 38, n. 4, p. 342

By:

Rautenbach, E.;
van Ryssen, J. B. J.;
van Niekerk, W. A.

Publication type:

Article

Potential benefit of trace element supplementation of sheep on a low level of nutrition.

Published in:

South African Journal of Animal Science, 2006, v. 36, n. 1, p. 20

By:

Cronjé, M. C.;
van Ryssen, J. B. J.;
Coertze, R. J.

Publication type:

Article

Effect of method of sample preparation on ruminal in situ disappearance of dry matter and nitrogen in annual ryegrass in dairy cows.

Published in:

South African Journal of Animal Science, 2005, v. 35, n. 2, p. 126

By:

Van der Merwe, B. J.;
Dugmore, T. J.;
Van Ryssen, J. B. J.;
Thurtell, L. M.;
Morning, S. J.

Publication type:

Article

Ash from fireplaces at homestead in rural regions of South Africa as potential source of minerals to goats.

Published in:

South African Journal of Animal Science, 2004, v. 34, n. 5, p. 111

By:

Van Ryssen, J. B. J.;
Ndlovu, H.

Publication type:

Article

Ash from fireplaces at homesteads in rural regions of South Africa as potential source of minerals to goats.

Published in:

South African Journal of Animal Science, 2004, v. 34, p. 111

By:

Van Ryssen, J. B. J.;
Ndlovu, H.

Publication type:

Article

Geographical distribution of the selenium status of herbivores in South Africa.

Published in:

South African Journal of Animal Science, 2001, v. 31, n. 1, p. 1, doi. 10.4314/sajas.v31i1.3840

By:

van Ryssen, J. B. J.

Publication type:

Article

Effect of dietary molasses on the site and extent of digestion of nutrients in sheep fed broiler litter.

Published in:

South African Journal of Animal Science, 2001, v. 31, n. 1, p. 33, doi. 10.4314/sajas.v31i1.3845

By:

Mavimbela, D. T.;
van Ryssen, J. B. J.

Publication type:

Article

Sensory characteristics of meat and composition of carcass fat from sheep fed diets containing various levels of broiler litter.

Published in:

South African Journal of Animal Science, 2000, v. 30, n. 1, p. 26, doi. 10.4314/sajas.v30i1.3871

By:

Mavimbela, D. T.;
Webb, E. C.;
Van Ryssen, J. B. J.;
Bosmanc, M. J. C.

Publication type:

Article

Wood ash in livestock nutrition: 2. Different uses of wood ash in animal nutrition.

Published in:

Applied Animal Husbandry & Rural Development, 2018, v. 11, n. 1, p. 62

By:

van Ryssen, J. B. J.

Publication type:

Article

Wood ash in livestock nutrition: 1. Factors affecting the mineral composition of wood ash.

Published in:

Applied Animal Husbandry & Rural Development, 2018, v. 11, n. 1, p. 53

By:

van Ryssen, J. B. J.;
Ndlovu, H.

Publication type:

Article

A glance at achievements of SASAS and animal scientists in southern Africa over more than 50 years.

Published in:

South African Journal of Animal Science, 2018, v. 48, n. 5, p. 801, doi. 10.4314/sajas.v48i5.1

By:

van Ryssen, J. B. J.

Publication type:

Article

Copper (Cu) metabolism in domestic herbivores as guide to criteria for predicting the Cu nutritional status of wild ruminants in southern Africa.

Published in:

Journal of the South African Veterinary Association, 2024, v. 95, n. 1, p. 26, doi. 10.36303/JSAVA.580

By:

van Ryssen, J. B. J.;
Bath, G. F.

Publication type:

Article

Liver moisture content in animals and possible causes of variations in hepatic dry matter content.

Published in:

Journal of the South African Veterinary Association, 2023, v. 94, n. 1, p. 7, doi. 10.36303/JSAVA.518

By:

van Ryssen, J. B. J.;
Webb, E. C.;
Myburgh, J. G.

Publication type:

Article