Browsing Production Animal Studies by Supervisor "Irons, Pete Charles"

Now showing items 1-8 of 8

Early determination of the reproductive potential of beef heifers using reproductive tract scoring, pelvimetry and transrectal ultrasonography

Holm, Dietmar Erik (University of Pretoria, 2013)

A series of 4 observational studies was performed on a Bovelder herd at Johannesburg Water’s Northern Farm. The heifer and cow breeding seasons started on 15 October and 1 November every year, and consisted of 50 d and ...
The economic effects of an oestrus synchronisation protocol using prostaglandin and reproductive tract scoring in beef heifers in South Africa

Holm, Dietmar Erik (University of Pretoria, 2006)

In this study 272 beef heifers were studied from just prior to their first breeding season (15 October 2003), through their second breeding season and until just after they had weaned their first calves in March 2005. The ...
Effect of Tritrichomonas foetus infection on the vaginal bacterial microbiota of heifers

Salles-Martins, Isabela (University of Pretoria, 2017)

Trichomonosis is a venereal disease responsible for extensive economic losses. Tritrichomonas foetus, deposited during copulation, adheres to the vaginal mucosa where it proliferates. The vaginal bacterial microbiota ...
Epidemiological studies of brucellosis, campylobacteriosis and trichomonosis, and other factors affecting calving rate in cattle herds in northern Nigeria

Mai, H.M. (Hassan Mohammed) (University of Pretoria, 2012)

Livestock production, of which cattle production is a major component, plays a key role in the socio-economic development of Nigeria, with 70-80% of the nation’s population of over 150 million engaged in agriculture and ...
The impact of training using a structured primary animal health care model on the skills of rural small scale farmers

Moerane, Rebone (University of Pretoria, 2013)

Primary animal health care (PAHC) programs are aimed at the provision of basic animal health services at local level. No single approach has emerged as the one of choice. The aim of this study was to evaluate the impact ...
Mechanisms by which lumpy skin disease virus is shed in semen of artificially infected bulls

Annandale, C.H. (Cornelius Henry) (University of Pretoria, 2007-12-17)

Lumpy skin disease (LSD) is a disease of significant economic importance in Africa. It causes considerable production losses and its presence in semen is a constraint to international trade. Recent findings that LSDV viral ...
Semen quality and the excretion of lumpy skin disease virus in semen following vaccination and experimental challenge of vaccinated bulls

Osuagwuh, Uchebuchi I. (University of Pretoria, 2007-03-30)

The aim of this study was to determine the efficacy of vaccination in preventing LSDV excretion in semen and negative effects on semen quality. Lumpy skin disease (LSD) is caused by a virus in the genus Capripoxvirus of ...
The sensitivity and specificity of three pregnancy-associated glycoprotein ELISA assays and factors affecting test accuracy in South African dairy cows

Motimele, Boitumelo (University of Pretoria, 2016)

The ruminant trophoblast produces pregnancy-associated glycoproteins (BPAGs) starting at day 25 after conception and continuing until parturition. These glycoproteins are detectable in the blood and milk of pregnant females ...

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Browsing Production Animal Studies by Supervisor "Irons, Pete Charles"

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