Browsing Theses and Dissertations (Production Animal Studies) by Supervisor "Holm, D.E. (Dietmar Erik)"

Now showing items 1-3 of 3

The effect of blood urea nitrogen on reproductive performance of beef heifers on different levels of nitrogen supplementation

Tshuma, Takula (University of Pretoria, 2013)

Ruminants have a unique ability to acquire protein from non-protein nitrogen (NPN) sources, and to recycle nitrogen back into the rumen, instead of excreting all of it via the urine, faeces and milk. However, a high ...
Oocyte quality and viability in Nguni and Hereford cows exposed to a high protein diet

Hamman, Robyn (University of Pretoria, 2015)

Protein is a fundamental part of nutrition in all animals but ruminants have the ability to metabolise and utilise non-protein nitrogen for this use. This allows for an economical alternative source of protein that does ...
A voluntary trichomonosis inter-laboratory comparison study in South Africa

Zangure, Tinashe Alan (University of Pretoria, 2019)

Trichomonosis is currently the most important venereal disease of cattle in South Africa with adverse economic implications to the beef production industry due to cow abortions, infertility and culling of carrier bulls. ...

Now showing items 1-3 of 3

Search UPSpace