Nutraceutical and preservative potential of <i>Acacia mearnsii</i> and <i>Acacia dealbata</i> leaves for ruminant production and product quality enhancement

Uushona, Tulimo; Chikwanha, Obert C.; Tayengwa, Tawanda; Katiyatiya, Chenaimoyo L.F.; Strydom, P.E.; Mapiye, Cletos

doi:10.1017/s0021859621001015

Cited by 11 publications

(6 citation statements)

References 103 publications

(143 reference statements)

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“…Recently, an interesting investigation on the seasonality effects of Acacia spp. on nutrient content, polyphenols and antioxidant activity showed that A. mearnsii had a nutritional and nutraceutical value higher than that of A. dealbata leaf-meals [87]. This finding was in line with a previous report on the ability of Acacia mearnsii to positively impact animal production, showing an effect on methanogenesis when used at the level of 30 g/kg (equivalent to 15 g total tannin/kg as analysed) [88].…”

Section: Effect Of Polyphenols On Rumen Fermentation Parameterssupporting

confidence: 90%

Polyphenols for Livestock Feed: Sustainable Perspectives for Animal Husbandry?

et al. 2022

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There is growing interest in specialized metabolites for fortification strategies in feed and/or as an antioxidant, anti-inflammatory and antimicrobial alternative for the containment of disorders/pathologies that can also badly impact human nutrition. In this context, the improvement of the diet of ruminant species with polyphenols and the influence of these compounds on animal performance, biohydrogenation processes, methanogenesis, and quality and quantity of milk have been extensively investigated through in vitro and in vivo studies. Often conflicting results emerge from a review of the literature of recent years. However, the data suggest pursuing a deepening of the role of phenols and polyphenols in ruminant feeding, paying greater attention to the chemistry of the single compound or to that of the mixture of compounds more commonly used for investigative purposes.

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Section: Effect Of Polyphenols On Rumen Fermentation Parameterssupporting

confidence: 90%

Polyphenols for Livestock Feed: Sustainable Perspectives for Animal Husbandry?

et al. 2022

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“…A signi cant drop in nutritive value, particularly crude protein (CP) from about 12% in the wet season to as low as < 2% in the dry season (Mapiye et al, 2009;Moyo et al, 2012) result in drastic shortfalls in meeting the protein requirements for both maintenance and production of sheep (NRC, 2007). In addition, the proliferation of invasive alien plants (IAPs), especially Australian Acacias (i.e., Acacia dealbata and A. mearnsii) has reduced rangeland production (Yapi et al, 2018;Gouws and Shackleton, 2019) and impacted negatively on livestock health, meat production and quality (Dezah et al, 2021;Uushona et al, 2021). Invasive Acacias are currently harvested by local communities for timber and fuelwood, and this often yields by-products such as leaves and bark, which currently have limited local value.…”

Section: Introductionmentioning

confidence: 99%

“…Invasive Acacias are currently harvested by local communities for timber and fuelwood, and this often yields by-products such as leaves and bark, which currently have limited local value. Strategies are being developed in the tropics to increase the economic value of invasive Acacias' leaves and bark to local communities, including their use as livestock feed and meat preservatives because they contain moderate to high levels of nutrients and polyphenols (Dezah et al, 2021;Uushona et al, 2021;2022).…”

Section: Introductionmentioning

confidence: 99%

Supplementation of Acacia dealbata versus Acacia mearnsii leaf-meal has potential to maintain growth performance of lambs grazing low-quality communal rangelands in South Africa

Mushunje,

Marandure,

Chikwanha

et al. 2024

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Supplementing livestock grazing communal rangelands with leaf-meals from Acacia trees, which are currently considered as problematic invasive alien plants globally, may be a sustainable way of exploiting their desirable nutritional and anthelmintic properties. The current study evaluated worm burdens and growth performance of lambs grazing low-quality communal rangelands supplemented with leaf-meals prepared from the invasive alien plant species; Acacia mearnsii or A. dealbata. Forty, three-month-old ewe lambs weighing an average of 18.9 ± 0.60 kg were randomly allocated to four supplementary diets: (1) rangeland hay only (control), (2) commercial protein supplement plus rangeland hay, (3) A. mearnsii leaf-meal plus rangeland hay and (4) A. dealbata leaf-meal plus rangeland hay. All the supplementary diets were formulated to meet the lambs’ minimum maintenance requirements for protein. All the lambs were grazed on communal rangelands daily from 0800 to 1400 after which they were penned to allow them access to their respective supplementary diets until 08:00 the following morning. The respective supplementary diets were offered at the rate of 400 g ewe− 1 day− 1 for 60 days. Lambs fed the commercial protein supplement had the highest dry matter intake followed by those fed the Acacia leaf-meals and the control diet, respectively (P ≤ 0.05). Relative to the other supplementary diets, lambs fed the commercial protein supplement and A. dealbata leaf-meal had higher (P ≤ 0.05) final body weight and average daily gains. Dietary supplementation did not affect lamb faecal worm egg counts over the study period (P > 0.05). There was no association between supplementary diets and lamb FAMACHA© scores (P > 0.05). It was concluded that the Acacia dealbata relative to Acacia mearnsii has potential to maintain growth performance of lambs grazing communal rangelands in the dry season.

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“…4,7 Although A. mearnsii wood is used for producing several products, signicant amounts of A. mearnsii leaves are typically discarded due to the lack of suitable processing methods, causing huge waste production and the proliferation of pests and diseases. 8 Hence, developing strategies to utilize A. mearnsii leaves is important for economic as well as environmental benets.…”

Section: Introductionmentioning

confidence: 99%

“…12 Furthermore, A. mearnsii leaves were found to have anti-inammatory, 12 anti-bloat, antioxidant and antimicrobial properties. 8 Flavonoids are important polyphenols consisting of two benzene rings linked by a heterocyclic six-membered pyrone ring (Fig. 1A).…”

Section: Introductionmentioning

confidence: 99%