The Copper, Cobalt, Iron, Selenium and Zinc Status of Cattle in the Sanyati and Chinamhora Smallholder Grazing Areas of Zimbabwe

Mpofu, I.D.T.; Ndlovu, L.R.; Casey, N.H.

doi:10.5713/ajas.1999.579

Cited by 8 publications

(4 citation statements)

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“…In lactating buffaloes, plasma Fe 2+ showed a marked excretion through faeces during winter. Mpofu et al (1998) demonstrated a marked seasonal effect in plasma Fe 2+ concentration that increased during the wet months and a decrease was noticed towards the end of the rainy season. According to Grant (1989), this could be of practical significance in communal areas where there is no dosing and poor dipping regimes for blood-sucking parasites.…”

Section: Article In Pressmentioning

confidence: 95%

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Studies on the transfer of mineral nutrients from feed, water, soil and plants to buffaloes under arid environments

Ashraf

Khan

Zafar

2006

Journal of Arid Environments

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Section: Article In Pressmentioning

confidence: 95%

“…After digestion, the volume was made up to 25 ml with double distilled water. For macro-nutrients a further dilution was prepared, while trace elements were analysed following the method of Mpofu et al (1998).…”

Section: Bloodmentioning

confidence: 99%

Studies on the transfer of mineral nutrients from feed, water, soil and plants to buffaloes under arid environments

Ashraf

Khan

Zafar

2006

Journal of Arid Environments

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“…With the exception of Cu, other micro minerals in the grass species are subsequently higher than the critical requirement levels for tropical beef cattle (McDowell et al 1983;Mpofu et al 1999). Also, the values are higher than those reported for tropical grass and legume/browse species (Little et al 1988;and Kabaija and Little 1991).…”

Section: Discussionmentioning

confidence: 93%

Nutrient characterisation and in vitro digestibility of grass and legume/browse species - based diets for beef cattle in Vanuatu

Aregheore¹,

Steglar²,

Ng’ambi³

2006

S. Pac. J. Nat. App. Sci.

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Some grasses, Buffalo (Panicum Coloratum), Guinea (Panicum maximum), Setaria (Setaria sphacelata), Embu (Panicum maxum), Elephant (Pennisetum Purpureum), Koronivia (Brachiaria humidicola), and Signal (Brachiaria decumben); and legumes/browses Gliricidia sepium, Glycine wightii, Green desmodium and Leucaena leucocephala grazed by beef cattle in Vanuatu were characterized for crude protein (CP), fibre fractions, macro and micro minerals (phosphorus, calcium, magnesium, potassium, copper, iron, manganese and zinc) and energy. Also in vitro digestibility study was carried out to predict the utilization of available nutrients. Data obtained were discussed in light of whether available nutrients would satisfy requirements of grazing beef cattle of different age and physiological function. The CP of grass and legume/browse species ranged from 7.9-17.8% and 10.5-23.9% respectively. L. leucocephala has a higher CP while Green leaf desmodium had the lowest CP content. DM and NDF were higher (P<0.05) in the grasses while CP was higher in the legume/browse species. Organic matter (OM) within and between the grass and legume/browse species varied. Mean concentrations of calcium (Ca) and phosphorus (P) in the grass species was 5.7 g/kg DM and 2.6 g/kg DM, respectively and this resulted in an average Ca:P ratio of 2.2:1 for the grasses while the legume /browse species had Ca:P ratio of 5.3:1. Ca was low while K was high in the grasses compared to the legume/browse species. Among the microminerals Cu was critically low in both the grass and legume/browse species. In vitro DMD, OMD and CPD between and within the grass and legume/browse species were not significantly different (P>0.05) from each other, however NDFD and ADFD were higher (P<0.05) in the grasses than in the legumes/browses. In conclusion, the results of these analyses and the in vitro digestibility study have provided information on nutrients that are adequate and/or inadequate in the grass and legume/browse species components grazed to sustain beef cattle production in Vanuatu. The very low concentration of Cu in both the grass and legume/browse species therefore demonstrates the need to supplement grazing beef cattle with mineral lick blocks to overcome its deficiency.

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“…Commonly consumed foods with Se concentrations less than 45 μg kg −1 WW were regarded as having low Se concentration (Courtman et al ., 2012 ). Livestock was considered Se deficient if the plasma Se concentration was less than 30 μg L −1 (Mpofu et al ., 1999 ) and marginally deficient if less than 60 μg L −1 (Dermauw et al ., 2014 ). In the human body, deficiency of Se was noted when its amount in plasma was less than 70 μg L −1 (Thomson, 2004 ; Phiri et al ., 2019 ; Belay et al ., 2020 ).…”

Section: Methodsmentioning

confidence: 99%

Linkages between soil, crop, livestock, and human selenium status in Sub‐Saharan Africa: a scoping review

Mutonhodza

Joy

Bailey

et al. 2022

Int J of Food Sci Tech

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Selenium (Se) is essential for human health, however, data on population Se status and agriculturenutrition-health linkages are limited in sub-Saharan Africa (SSA). The scoping review aims to identify linkages between Se in soils/crops, dietary Se intakes, and livestock and human Se status in SSA. Online databases, organisational websites and grey literature were used to identify articles. Articles were screened at title, abstract and full text levels using eligibility criteria. The search yielded 166 articles from which 112 were excluded during abstract screening and 54 full text articles were assessed for eligibility. The scoping review included 34 primary studies published between 1984 and 2021. The studies covered Se concentrations in soils (n = 7), crops (n = 9), animal tissues (n = 2), livestock (n = 3), and human Se status (n = 15). The evidence showed that soil/crop Se concentrations affected Se concentration in dietary sources, dietary Se intake and biomarkers of Se status. Soil types are a primary driver of human Se status and crop Se concentration correlates positively with biomarkers of Se dietary status. Although data sets of Se concentrations exist across the food system in SSA, there is limited evidence on linkages across the agriculture-nutrition nexus. Extensive research on Se linkages across the food chain is warranted.

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The Copper, Cobalt, Iron, Selenium and Zinc Status of Cattle in the Sanyati and Chinamhora Smallholder Grazing Areas of Zimbabwe

Cited by 8 publications

References 0 publications

Studies on the transfer of mineral nutrients from feed, water, soil and plants to buffaloes under arid environments

Studies on the transfer of mineral nutrients from feed, water, soil and plants to buffaloes under arid environments

Nutrient characterisation and in vitro digestibility of grass and legume/browse species - based diets for beef cattle in Vanuatu

Linkages between soil, crop, livestock, and human selenium status in Sub‐Saharan Africa: a scoping review

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