Effect of Spirulina supplementation on plasma metabolites in crossbred and purebred Australian Merino lambs

Malau-Aduli, A.E.O., and Holman, B.W.B. (2015) Effect of Spirulina supplementation on plasma metabolites in crossbred and purebred Australian Merino lambs. International Journal of Veterinary Science and Medicine, 3 (1-2). pp. 13-20.

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The effect of supplementing purebred and crossbred Merino lambs with Arthrospira platensis (Spirulina) on plasma metabolite concentrations under pasture-based management system and the influences of sire breed and sex were investigated. A completely randomized experimental design balanced by 4 sire breeds (Merino, White Suffolk, Dorset and Black Suffolk), 3 Spirulina supplementation levels (0, 100 and 200 ml representing the control, low and high, respectively)and 2 sexes (ewe and wether lambs) was utilised. All lambs had ad libitum access to the basal diet of ryegrass pastures and barley. Lambs in the treatment groups were individually drenched daily with Spirulina prior to being released with the control group of lambs for grazing over a 6-week period following a 3-week adjustment phase. At the start and completion of the feeding trial, blood samples were centrifuged and plasma metabolites measured. Data were analysed with Spirulina supplementation level, sire breed, sex and their second-order interactions fitted as fixed effects and metabolite concentrations as dependent variables. Gamma-glutamyl transferase (GGT) concentrations decreased (from 79.40 to 69.25 UI) and glucose increased (from 3.81 to 4.19 mmol/L) as the level of Spirulina supplementation increased from0 ml in the control to 200 ml in the high treatment groups (P < 0.05). Lambs supplemented at low Spirulina levels had the highest creatinine concentrations (61.75 micro mol/L). Interactions between sex and supplementation level significantly affected glucose, aspartate aminotransferase (AST) and Mg concentrations (P < 0.05), while sire breed and supplementation level interactions influenced albumin to globulin (A/G) ratio, creatinine and GGT concentrations. It was demonstrated that Spirulina supplementation does not negatively impact lamb health and productivity.

Item ID: 41091
Item Type: Article (Research - C1)
ISSN: 2314-4599
Keywords: Arthrospira platensis; protein-rich supplementation; plasma metabolites; sheep; ovine
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© 2015 Faculty of Veterinary Medicine, Cairo University. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Funders: Australian Wool Education Trust (AWET), University of Tasmania (UTAS)
Date Deposited: 27 Oct 2015 03:42
FoR Codes: 07 AGRICULTURAL AND VETERINARY SCIENCES > 0707 Veterinary Sciences > 070709 Veterinary Pathology @ 10%
07 AGRICULTURAL AND VETERINARY SCIENCES > 0702 Animal Production > 070201 Animal Breeding @ 50%
07 AGRICULTURAL AND VETERINARY SCIENCES > 0702 Animal Production > 070204 Animal Nutrition @ 40%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8303 Livestock Raising > 830310 Sheep - Meat @ 100%
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