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Project No: PS4

Title: To determine the optimum grazing capacity for the arid karoo
Project Leader: T Buys & Dr PCV du Toit Starting date: 1989
Partners: Closing date: indefinate
 
Objectives: The objective is to determine a realistic grazing capacity for the arid karoo by making use of different sheep breeds, the trial started off by using Afrino sheep, it is currently being run using Dorper sheep. Since climatic factors play such an over-riding effect on animal production in response to the vegetation response to the prevailing climate. The vegetation is monitored on annual basis, to determine the effects of the combined climate and grazing on its development
Location: Carnarvon Experimental Research Station
Strategic Objectives Addressed:

 

Progress reports:

 

 

Publications:

 

Author Year Title Publication
du Toit PCV 2002 Die seisoenale dieet wat deur Dorperskape in die bossieveld van die ariede Karoo geselekteer word Dorpernuus No 61, 2002
Du Toit PCV 2000 Weidingswaarde en verspreiding van Stipagrostis obtusa en die voorspelling van weidingskapasiteite in die Nama-karoo Grootfontein Agric Vol2, No 2, 2000 (14-16)
Du Toit PCV, Blom CD 1994 Diet selection by different small stock species in the Arid Karoo Karoo Agric, Vol. 6, No 1, 1994 (25-27), Arid zone ecology forum 1994:19-20
Du Toit PCV 2000 Wat vreet verskillende skaaprasse in die Dorre Karoo? Grootfontein Agric, Vol 2, No 2, 2000 (12-13)
Du Toit PCV 1993 Stocking rate vs defloliation of karoo bushes Karoo Agric nr 5 (1) p 17 -21
Du Toit PCV 1993 Verwantskap tussen belading en die intensiteit van ontblaring van Karoobossies deur skape. Bulletin Weidingsvereniging Suidelike Afrika 4 (1)
Du Toit PCV 1996 Karoobush defoliation in the Arid Karoo. Journal of Range Management 49(2), March 1996
Du Toit PCV, Blom CD, Immelman 1995 Diet selection by sheep and goats in the Arid Karoo African Journal of Range and Forage Science 12(1)p 16 -26
Du Toit PCV 1997 A Comparison of the diets selected by Merino and Dorper sheep on three range types of the Karoo, South Africa Archivos de Zootecnia / Dorper News
Du Toit PCV, Steynberg, Barnhoorn A 1992 Animal performance on saltbush grazing at Grootfontein and Carnarvon Bulletin van die Weidingsvereniging van suidelike afrika 3(1):35 (1992)
du Toit PCV 2000 Estimating grazing index values for plants from arid regions Journal of Range Management, 53(5) September 2000
Du Toit PCV 1998 Diets selected by Merino and Dorper sheep in Karoo veld Grootfontein Agric, Vol. 2, No 1, 1998
Du Toit PCV 1997 A study of diets selected in three arid veld types Arid sone ecology forum 1997: 15 -16