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Research Articles (Production Animal Studies): Recent submissions

Now showing items 1-20 of 644

Leptospiral infection in domestic mares in North Queensland

Alayil, A.L.; Horwood, P.F.; Gummow, Bruce; Picard, J.A.; Joone, Carolynne J. (Wiley, 2025)

Leptospira species are found worldwide, favouring tropical regions, and infect a wide range of animal species. Although renal persistence in infected individuals and excretion in urine is thought to be the primary mechanism ...
Protective efficacy of a plant-produced beta variant rSARS-CoV-2 VLP vaccine in golden Syrian hamsters

Lemmer, Yolandy; Chapman, Ros; Abolnik, Celia; Smith, Tanja; Schafer, Georgia; Hermanus, Tandile; Du Preez, Ilse; Goosen, Kruger; Sepotokele, Kamogelo Mmapitso; Gers, Sophette; Suliman, Tasnim; Preiser, Wolfgang; Shaw, Megan L.; Roth, Robyn; Truyts, Alma; Chipangura, John; Magwaza, Martin; Mahanjana, Osborn; Moore, Penny L.; O'Kennedy, Martha (Elsevier, 2024-02)

In the quest for heightened protection against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants, we engineered a prototype vaccine utilizing the plant expression system of Nicotiana benthamiana, ...
Molecular and in vivo characterization of the high pathogenicity H7N6 avian influenza virus that emerged in South African poultry in 2023

Abolnik, Celia; Phiri, Thandeka Precious; Strydom, Christine; Ismail, Zehaad; Jordaan, Frances; Wannenburg, Kaila; Bisschop, S.P.R. (Shahn) (Wiley, 2024-11)

Please read abstract in the article.
Seroprevalence and risk factors of Toxoplasma gondii in sheep and goats of North West Province, South Africa

Masombuka, Mthokozisi; Mphuthi, Malekoba B.N.; Ngoshe, Yusuf Bitrus; Mokolopi, Gloria; Gcebe, Nomakorinte (BMC, 2024-03-26)

BACKGROUND : The protozoan parasite Toxoplasma gondii causes toxoplasmosis, one of the most prevalent parasitic zoonotic diseases with significant economic and public health implications worldwide. Infection with the ...
Ultrastructural changes in the spermatogenic cells of domestic chicken (Gallus gallus domesticus) observed at different reproductive stages

Zakariah, Musa; Majama, Yagana B.; Gazali, Yagana A.; Musa, Esther Z.; Dasa, Josephine J.; Molele, Reneilwe A.; Mahdy, Mohammed A.A. (Elsevier, 2024-12)

Spermatogenesis is a complex process. It is the modification of progenitor spermatogonia into mature spermatozoa. The stages are similar in all-male vertebrates, as well as avian species. However, studies on spermatogenesis ...
Undegradable dietary protein limits growth and carcass yields in crossbred Boer kids fed desmanthus hay or rhodes grass (Chloris gayana) hay supplemented with urea and/or cottonseed meal

Aoetpah, Aholiab; Gardiner, C.; Gummow, Bruce; Mialon, A.; Walker, Glen (CSIRO Publishing, 2024-09)

CONTEXT: Low-protein tropical forages required protein supplementation, which might affect growth of meat goats. AIMS: This study was aimed to compare liveweight gain, carcass/non-carcass yields and meat quality in ...
Toxoplasmosis epidemic in a population of urbanised allied rock-wallabies (Petrogale assimilis) on Magnetic Island (Yunbenun), North Queensland

Bowater, R.O.; Gummow, Bruce; Mackie, T.; Thompson, A.R.; Hayes, D.A.; Goudkamp, K.; Taylor, J.D. (Wiley, 2024-05)

A mortality event involving 23 allied rock-wallabies (Petrogale assimilis) displaying neurological signs and sudden death occurred in late April to May 2021 in a suburban residential area directly adjacent to Magnetic ...
Bovine cysticercosis epidemiology and the economic impact of the triceps brachii incision in a South African export abattoir

Uys, Matthys; Fosgate, Geoffrey T.; Seguino, Alessandro (Elsevier, 2023-11)

Taenia saginata is a zoonotic tapeworm of humans with bovines as its intermediate host (bovine cysticercosis). Traditional meat inspection is the main measure to identify the larval stage in carcasses and prevent ...
Efficacy of a plant-produced infectious bronchitis virus-like particle vaccine in specific pathogen-free chickens

Sepotokele, Kamogelo M.; O’Kennedy, Martha M.; Hayes, M.C.; Wandrag, D.B.R. (Daniel); Smith, Peter W.; Abolnik, Celia (Elsevier, 2023-10)

Infectious bronchitis (IB) Gammacoronavirus causes a highly contagious respiratory disease in chickens that is listed by the World Organisation for Animal Health (WOAH). Its high mutation ability has resulted in numerous ...
Reliability, clinical performance and trending ability of a pulse oximeter and pulse co-oximeter, in monitoring blood oxygenation, at two measurement sites, in immobilised white rhinoceros (Ceratotherium simum)

Mtetwa, Thembeka Kim; Snelling, Edward P.; Buss, Peter Erik; Donaldson, Ashleigh C.; Roug, Annette; Meyer, L.C.R. (Leith Carl Rodney) (BMC, 2024-07)

BACKGROUND: Monitoring blood oxygenation is essential in immobilised rhinoceros, which are susceptible to opioid induced hypoxaemia. This study assessed the reliability, clinical performance and trending ability of the ...
Optimization of infectious bronchitis virus-like particle expression in Nicotiana benthamiana as potential poultry vaccines

Sepotokele, Kamogelo M.; O’Kennedy, Martha M.; Wandrag, D.B.R. (Daniel); Abolnik, Celia (Public Library of Science, 2023-07-20)

Infectious bronchitis (IB) is a highly contagious, acute respiratory disease in chickens, with a severe economic impact on poultry production globally. The rapid emergence of regional variants of this Gammacoronavirus ...
Spillover of an endemic avian Influenza H6N2 chicken lineage to ostriches and reassortment with clade 2.3.4.4b H5N1 high pathogenicity viruses in chickens

Abolnik, Celia (Springer, 2024-04)

Prior to 2017, chicken production in South Africa had only ever been affected by an endemic strain of H6N2 low pathogenic avian influenza (LPAI), but since 2017, an outbreak of Goose/Guangdong clade 2.3.4.4b H5N8 high ...
Orthognathic surgery to improve malocclusion in a chimpanzee (Pan troglodytes)

Steenkamp, Gerhard; Hoogendijk, Christiaan Fritz; Ruiz, José Carlos Almansa; Koeppel, Katja Natalie (Wiley, 2024-03)

Malocclusion is a common finding in both companion animals and humans due to dental or maxillofacial discrepancies. Treatment depends on the complications and the species it presents in. In humans, orthognathic surgery is ...
Prevalence of co-infections with Ehrlichia spp. or Theileria spp. in dogs naturally infected with babesiosis in the Eastern Cape province

Cloete, Henry P.P.; Rautenbach, Yolandi; Leisewitz, Andrew L.; Mellanby, Richard J.; Thompson, P.N. (Peter N.); Schoeman, Johan P. (Elsevier, 2024-09)

BACKGROUND : Canine babesiosis and ehrlichiosis are tick-borne infections of great significance in South Africa. Theileriosis in dogs in South Africa is still poorly understood. Co-infection with multiple tick-borne diseases ...
Molecular characterization of Leptospira species detected in the kidneys of slaughtered livestock in abattoirs in Gauteng Province, South Africa

Dogonyaro, Banenat Bajehson; Van Heerden, Henriette; Potts, Andrew D.; Fasina, Folorunso Oludayo; Casanovas-Massana, Arnau; Kolo, Francis Babaman; Lotter, Christine; Byaruhanga, Charles; Ko, Albert I.; Wunder, Jr.Elsio A.; Adesiyun, Abiodun Adewale (MDPI, 2023-04-30)

Leptospira was investigated in kidneys (n = 305) from slaughtered livestock in the Gauteng Province abattoirs, South Africa, using a culture medium to isolate Leptospira, followed by the LipL32 qPCR to detect Leptospira ...
Identification of Listeria species and multilocus variable-number tandem repeat analysis (MLVA) typing of Listeria innocua and Listeria monocytogenes isolates from cattle farms and beef and beef-based products from retail outlets in Mpumalanga and North West Provinces, South Africa

Manqele, Ayanda; Gcebe, Nomakorinte; Pierneef, Rian E.; Moerane, Rebone; Adesiyun, Abiodun Adewale (MDPI, 2023-01-15)

In this study, Listeria isolates (214) were characterized as follows: L. innocua (77.10%), L. monocytogenes (11.21%), L. welshimeri (5.61%), L. grayi (1.40%), L. seeligeri (0.93%), and L. species (3.73%) that were not ...
Genomic characterization of Listeria innocua isolates recovered from cattle farms, beef abattoirs, and retail outlets in Gauteng Province, South Africa

Gana, James; Gcebe, Nomakorinte; Pierneef, Rian Ewald; Chen, Yi; Moerane, Rebone; Adesiyun, Abiodun Adewale (MDPI, 2023-08-18)

Whole-genome sequencing (WGS) was used for the genomic characterization of one hundred and ten strains of Listeria innocua (L. innocua) isolated from twenty-three cattle farms, eight beef abattoirs, and forty-eight retail ...
Approaches to increase recovery of bacterial and fungal abortion agents in domestic ruminants

Jonker, Annelize; Thompson, P.N. (Peter N.); Michel, Anita Luise (AOSIS, 2023-01-11)

Abortions in domestic ruminants cause significant economic losses to farmers. Determining the cause of an abortion is important for control efforts, but it can be challenging. All available diagnostic methods in the ...
Ex vivo biomechanical evaluation and comparison of lateral femoro-fabella ligament suture and lateral suture with bone anchor for cranial cruciate ligament repair in cats

Tassani, Chiara; De Witt, Anika A.; Fosgate, Geoffrey Theodore; Elliott, Ross C. (American Veterinary Medical Association, 2024-08)

OBJECTIVE : To compare the biomechanical properties of lateral femoro-fabella ligament suture (FFLS) and lateral suture with a bone anchor suture (BAS) for management of feline cranial cruciate ligament disease. ANIMALS ...
Whole-genome sequencing of human and porcine Escherichia coli isolates on a commercial pig farm in South Africa

Strasheim, Wilhelmina; Lowe, Michelle; Smith, Anthony Marius; Etter, Eric Marcel Charles; Perovic, Olga (MDPI, 2024-06)

Escherichia coli is an indicator micro-organism in One Health antibiotic resistance surveillance programs. The purpose of the study was to describe and compare E. coli isolates obtained from pigs and human contacts from ...

Now showing items 1-20 of 644

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