The effect of Browse Plus™on nutrient intake, rumen pH and digestibility of a sole diet ofLeucaena leucocephalaforage

Majuva-Masafu, MM; Linington, MJ

doi:10.2989/10220110609485901

Cited by 3 publications

(3 citation statements)

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“…For example, treating Leucaena leucocephala forage with BP was noted to increase its intake by 32% when fed to sheep (Majuva-Masafu & Linington, 2006). Treating Lotus pedunculatus with PEG was shown to deactivate the tannins and increase the intake of forage by sheep (Barry & Duncan, 1984).…”

Section: Discussionmentioning

confidence: 99%

Nutrient intake, digestibility and nitrogen retention in indigenous goats fed on Acacia nilotica fruits treated for condensed tannins

Tshabalala¹,

Sikosana²,

Chivandi³

2014

SA J. An. Sci.

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Polyethylene glycol (PEG 4000), Browse Plus TM (BP), wood ash (WA) and boiling water were evaluated as tannin deactivation methods on tannins in Acacia nilotica fruits. Twenty four Matebele goats of mean body mass, 38.7 ± 3.12 kg, were used in a digestibility and nitrogen balance trial. A completely randomized design was used, and the initial weight was used as a covariate in data analysis. The goats were randomly allocated to the treatments and were fed for 28 days on a basal diet of hay and A. nilotica fruits treated with PEG (MW 4000), BP, WA or boiling water. Acacia nilotica fruits had 4.39% catechin equivalents of condensed tannins, thus the amount of PEG, BP and WA used to treat the fruits was 1.5 parts per part of condensed tannin in the fruits. It was hypothesized that treating the fruits would deactivate the tannins in them and increase intake, digestibility and nitrogen retention. Treating the fruits for condensed tannins had no effect on hay and fruit intake. None of the treatments had an effect on the apparent digestibility of dry matter, organic matter, neutral and acid detergent fibre and nitrogen retention in the goats. The goats that were fed on the boiled fruits had a negative N retention of -1.03 g/day. It was concluded that none of the detannification methods improved feed intake, apparent nutrient digestibility and nitrogen retention. It is recommended that each detannification method should be tested on different types of tannins and at different concentrations before totally dismissing the treatments as not useful.________________________________________________________________________________

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Section: Discussionmentioning

confidence: 99%

Nutrient intake, digestibility and nitrogen retention in indigenous goats fed on Acacia nilotica fruits treated for condensed tannins

Tshabalala¹,

Sikosana²,

Chivandi³

2014

SA J. An. Sci.

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Section: Introductionmentioning

confidence: 99%

Provisioning polyethylene glycol (PEG) to large herbivores in nutrient poor savannas can break food limitation

Schroder,

Van Langevelde,

Schroder

et al. 2024

Preprint

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Reproduction and survival of herbivores in nutrient poor savannas is low due to low nutrient and energy availability, partly caused by high levels of tannins. Polyethylene glycol (PEG) increases the availability of proteins for herbivores by binding tannins. The effect of PEG on the diet of free-roaming herbivores has not been tested. Our hypothesis was deploying lick blocks with the addition of PEG in a nutrient poor savanna, will result in a broadening of the diet of free-roaming herbivores with higher percentages of browse species and higher utilisation per browse species, with higher tannin levels. We further hypothesised that the mineral content in the faeces, once exposed to PEG would increase. We collected faecal samples of five herbivore species with various feeding methods (grazers, browsers or mixed feeders). The study used a Before-After-Control-Impact (BACI) design. The results show that the addition of PEG promotes a change in the browse dietary choices of four of the five herbivore species, and are expressed as a broader choice of diet, coupled with higher numbers of browse species with low edibility and higher tannin levels. The addition of PEG had no noteworthy effect on the concentration of minerals found in the faeces.

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“…Polyethylene glycol (PEG) (with commercial names such as Browse Plus or Movicol) is an inert and unabsorbed molecule, which binds with tannins to form a stable complex, preventing the binding between tannins and proteins (Badran and Jones 1965;Makkar et al 1995;Majuva-Masafu and Linington 2006) and may increase the availability of macronutrients for herbivores and decrease malaise (Provenza et al 2000). To date, several studies showed the effect of chemical defences and PEG on the diet of mammalian herbivores, such as goats (Capra aegagrus hircus), sheep (Ovis aries) and cattle (Bos taurus africanus) (Salawu et al 1997;Decandia et al 2000;Moujahed et al 2000;Landau et al 2003;Mkhize et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Methods to improve forage quality for mammalian herbivores in nutrient poor savannas

Schroder¹

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The effect of Browse Plus^™on nutrient intake, rumen pH and digestibility of a sole diet ofLeucaena leucocephalaforage

Cited by 3 publications

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Nutrient intake, digestibility and nitrogen retention in indigenous goats fed on <i>Acacia nilotica</i> fruits treated for condensed tannins

Nutrient intake, digestibility and nitrogen retention in indigenous goats fed on <i>Acacia nilotica</i> fruits treated for condensed tannins

Provisioning polyethylene glycol (PEG) to large herbivores in nutrient poor savannas can break food limitation

Methods to improve forage quality for mammalian herbivores in nutrient poor savannas

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