Mary‐Cathrine Madekurozwa's research while affiliated with University of Pretoria and other places

Publications (5)

Article
Full-text available
Intermediate filaments belong to a large family of proteins which contribute to the formation of the cytoskeleton. The immunolocalization of cytoskeletal proteins has been used extensively in the diagnosis of various renal pathologies. The present study described the immunolocalization of the cytoskeletal proteins vimentin, desmin, smooth muscle ac...
Article
The purpose of the present study was to determine the histological and ultrastructural changes in the luminal epithelium of the shell gland associated with natural moulting. Samples of the shell gland from laying (32 weeks old) and moulting (75 weeks old) hens were studied using histological, histochemical and electron microscopic techniques. In ad...
Article
Full-text available
This study was conducted to investigate the effects of dietary supplementation of a probiotic (Bacillus subtilis), acidifiers, and their combination on the mucosa of the broiler small intestine. A total of 220 straight run 1-day-old broiler chicks (Ross 308) were distributed into 4 experimental treatments with 5 replicates per treatment as a 2 × 2...
Article
This study describes ciliated, nonciliated and mitochondrial luminal epithelial cells of the isthmus in laying and moulting domestic fowls using histological and ultrastructural techniques. The ciliated cells were nonsecretory, while numerous electron‐dense secretory granules were present in the nonciliated cells of laying birds. Mitochondrial cell...
Article
The study investigated the ultrastructural characteristics of tubular gland and duct cells, as well as luminal gland cells in the isthmus region of the oviduct of laying and natural moulting hens. Tubular glands in laying birds were composed of type 1 and 2 cells. Based on the preponderance of each cell type, in relation to the location of a develo...

Citations

... The TUNEL-positive cell counting was performed according to previously described methods (Dutta et al., 2012;Madekurozwa and Mpango, 2020). An image analyzer system (CellSens dimension software) tethered to an Olympus BX-63 microscope was used to count the TUNEL-positive cells. ...
... The use of feed additives and supplements, such as acidifiers, has generally resulted in beneficial changes to gut morphology and growth performance of poultry species (Elhassan et al., 2019). Currently, many researchers are investigating different feed additives that may be used to alleviate the problems associated with the withdrawal of antibiotics from the feed. ...
... An image-analyzer system (CellSens dimension software, Tokyo, Japan) linked to an Olympus BX-63 microscope (Tokyo, Japan) was used to count the TUNEL-positive nuclei. This was conducted according to the method described by Mpango and Madekurozwa [79]. ...
... However, a lack of calcium inhibits the secretion of pituitary luteinizing hormone (LH), resulting in a decrease in plasma LH level or even cessation of estrogen secretion. Consequently, hens decrease in weight and immunity [10], the oviduct isthmus degenerates [11,12], and ovarian aging and atrophy occur [13], resulting in reduced ELR and eggshell quality. ...