Browsing by Author "Katiyatiya, Chenaimoyo L. F."

Now showing 1 - 3 of 3
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    Bioavailability and bioefficacy of hemp by-products in ruminant meat production and preservation: a review.
    (2020) Semwogerere, Farouk; Katiyatiya, Chenaimoyo L. F.; Chikwanha, Obert C.; Mapiye, Cletos
    Plant by-products obtained from agro-industrial processes require valorisation to demonstrate their potential for enhancing animal health, meat production, and shelf life extension. One example is the fast-growing hemp industry, which produces seeds, leaves, seed oil, and cake. Studies on the nutritional value of hempseed cake have shown it can be a valuable source of protein in ruminant diets. However, there is limited documentation on the bioavailability and bioefficacy of hemp phytochemicals for improving ruminant health, production, and extending meat shelf life. The current review provides an overview of existing information on nutrient and phytochemical composition of hemp by-products, their bioavailability, and bioefficacy, and explores current limitations and prospects regarding their valorisation.
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    Sericea lespedeza (Lespedeza juncea var. sericea) for sustainable small ruminant production : feed, helminth suppressant and meat preservation capabilities
    (Elsevier, 2020-10-10) Mahachi, Leo N.; Chikwanha, Obert C.; Katiyatiya, Chenaimoyo L. F.; Marufu, Munyaradzi C.; Aremu, Adeyemi O.; Mapiye, Cletos
    Small ruminants significantly contribute towards livelihood, food and nutrition security for people living in semiarid low-to-middle-income countries. However, their productivity is largely constrained by feed shortages, prevalence of gastrointestinal nematodes (GIN) and postharvest meat losses. The current review explores the possibility of using sericea lespedeza (Lespedeza juncea var. sericea) as a natural helminth suppressant, feed ingredient and meat preservative for improving small ruminant health, meat production and shelf life. Sericea lespedeza has moderate contents of crude protein, fibre, minerals, vitamins, amino acids, and diverse composition of physiologically active substances such as condensed tannins, sterols and flavanols from which it derives nutritional, anti-bloat, helminth suppressant, antimicrobial and antioxidative properties. Overall, the present review demonstrates the potential of feeding sericea lespedeza to small ruminants as a sustainable means of controlling GIN and enhancing meat production and shelf life, while also reducing greenhouse gas (GHG) emissions. However, more research is required to determine optimal feeding strategies and doses for reducing GHG emissions while improving health, meat production and quality of small ruminants.
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    Southern African indigenous fruits and their byproducts : prospects as food antioxidants
    (Elsevier, 2020) Pfukwa, Trust M.; Chikwanha, Obert C.; Katiyatiya, Chenaimoyo L. F.; Fawole, Olaniyi A.; Manley, Marena; Mapiye, Cletos
    The discourse regarding plant-based preservatives for food application has generally revolved around extracts from commercial fruits, vegetables, herbs and spices with indigenous fruits (IFs) on the periphery, with little investment into their valorisation. While being important food sources at community level, IFs and their byproducts are also incorporated into medicinal remedies, combating various diseases. Their ethnomedicinal usage indicates potent bioactive profile that alleviate effects of oxidative stress, which accompany disease in vivo. This is supported by in vitro antioxidant activity of the IFs and their byproducts. As such, the current review explores the potential of bioprospecting extracts from nine IFs and their byproducts as food antioxidants. Evidence presented shows that IFs have high content of bioactive compounds further translating to high antioxidant activity. Research gaps in information concerning in vitro bioactivity warrant further research to provide impetus for valorisation and food application of IFs.