A seaweed residue unsuitable as a major source of energy or nitrogen for growing Pigs

Whittemore, C. T.; Percival, John K.

doi:10.1002/jsfa.2740260212

Cited by 6 publications

(4 citation statements)

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“…Supplementation of Mg and S is not commonly required for monogastric diets, but may be valuable in diets for grazing ruminants in tropical regions (Machado et al 2015). Considering the high osmotic capacity of specific minerals, the use of this U. lactuca sample would increase the risk of low faecal consistency, diarrhoea and wet droppings in pigs and poultry as shown for high inclusion of an Ascophyllum nodosum residue in pigs (Whittemore and Percival 1975). In addition, interaction between minerals and trace elements may reduce the absorption of specific nutrients from the digestive tract.…”

Section: Discussionmentioning

confidence: 99%

Biorefinery of the green seaweed Ulva lactuca to produce animal feed, chemicals and biofuels

et al. 2016

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The growing world population demands an increase in animal protein production. Seaweed may be a valuable source of protein for animal feed. However, a biorefinery approach aimed at cascading valorisation of both protein and non-protein seaweed constituents is required to realise an economically feasible value chain. In this study, such a biorefinery approach is presented for the green seaweed Ulva lactuca containing 225 g protein (N × 4.6) kg−1 dry matter (DM). The sugars in the biomass were solubilised by hot water treatment followed by enzymatic hydrolysis and centrifugation resulting in a sugar-rich hydrolysate (38.8 g L−1 sugars) containing glucose, rhamnose and xylose, and a protein-enriched (343 g kg−1 in DM) extracted fraction. This extracted fraction was characterised for use in animal feed, as compared to U. lactuca biomass. Based on the content of essential amino acids and the in vitro N (85 %) and organic matter (90 %) digestibility, the extracted fraction seems a promising protein source in diets for monogastric animals with improved characteristics as compared to the intact U. lactuca. The gas production test indicated a moderate rumen fermentation of U. lactuca and the extracted fraction, about similar to that of alfalfa. Reduction of the high content of minerals and trace elements may be required to allow a high inclusion level of U. lactuca products in animal diets. The hydrolysate was used successfully for the production of acetone, butanol, ethanol and 1,2-propanediol by clostridial fermentation, and the rhamnose fermentation pattern was studied.Electronic supplementary materialThe online version of this article (doi:10.1007/s10811-016-0842-3) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

Biorefinery of the green seaweed Ulva lactuca to produce animal feed, chemicals and biofuels

et al. 2016

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“…recorded weight loss in pigs fed 100 g kg −1 of a meal produced from A. nodosum , an alga that characteristically contains less than 100 g kg −1 of protein in the DM. Similarly, Whittemore and Percival concluded that the residue from A. nodosum after extraction of alginate was poorly digested and unsuitable as a protein and energy source for pigs. There are few published reports on the inclusion of brown macroalgae in formulated compound feed for fish.…”

Section: Effects On Growth Performance Protein Utilization and Carcamentioning

confidence: 99%

Marine macroalgae as sources of protein and bioactive compounds in feed for monogastric animals

2018

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Marine macroalgae are considered as promising sustainable alternatives to conventional terrestrial animal feed resources. The advantages include high growth rate, potential cultivation in saltwater, and no occupation of arable land. Macroalgae are broadly classified as brown (Phaeophyta), red (Rhodophyta) and green (Chlorophyta) algae, and are a diverse group of marine organisms. The nutritional value of macroalgae is highly variable. The protein and essential amino acid content can be low, especially in brown species, and indigestible polysaccharides adversely affect the energy value. Optimal use of macroalgae in feeds requires suitable processing, and biorefinery approaches may increase protein content and improve nutrient availability. Macroalgae are rich in unique bioactive components and there is a growing interest in the potentially beneficial health effects of compounds such as laminarin and fucoidan in different macroalgal and macroalgal products. This review summarizes current literature on different aspects of the use of macroalgae as sources of protein and health-promoting bioactive compounds in feed for monogastric animal species.

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“…This could be explained partially by a possible increased metabolic fecal nitrogen loss in association with a zero utllization of the kelp nitrogen, which is strongly bound to cellulose (Whyte and Englar 1975b Whittemore and Percival (1975) The value of kelp as a stimulator of feed intake has been documented. Morris (1932) showed increases of up to 30% in food consumption and an 87o increase in the growth of rats fed a high protein diet with 6Vo added Macrocystis pyrifera meal.…”

Section: Resultsmentioning

confidence: 99%

Nutrient Utilization Experiments With Growing Pigs Fed Diets Containing From 0 to 20% Kelp (Nereocystis Luetkeana) Meal

Beames¹,

Tait²,

Whyte³

et al. 1977

Can. J. Anim. Sci.

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rient utilization experiments with growing pigs fed diets containing from 0 to 2OVokelp (Iiereocystis luetkeana) meal. Can. J. Anim. Sci. 57: l2l-129.Two groups, each of six male castrated pigs, ranging in weight from 37 to 56 kg, were used in a nutrient balance experiment designed to study the effect of adding different levels of kelp (Nereocystis luetkeana) meal to a mineral-vitamin fortified diet of barlgy and soybean meal. The kelp meal showed a negative nitrogen digestibility ranging from 1.9 to 4.7 g fecal nitrogen loss/100 g dry kelp intake.

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A seaweed residue unsuitable as a major source of energy or nitrogen for growing Pigs

Cited by 6 publications

References 5 publications

Biorefinery of the green seaweed Ulva lactuca to produce animal feed, chemicals and biofuels

Biorefinery of the green seaweed Ulva lactuca to produce animal feed, chemicals and biofuels

Marine macroalgae as sources of protein and bioactive compounds in feed for monogastric animals

Nutrient Utilization Experiments With Growing Pigs Fed Diets Containing From 0 to 20% Kelp (Nereocystis Luetkeana) Meal

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