Impact of dietary incorporation of spirulina (Arthrospira platensis) and exogenous enzymes on broiler performance, carcass traits, and meat quality
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This study assessed the effect of Spirulina (Arthrospira platensis), individually and in combination with exogenous enzymes, on growth performance, carcass traits, and meat quality of broiler chickens. One hundred and twenty Ross 308 male chickens were allocated into 40 battery brooders, with 3 birds per cage, and fed ad libitum a corn-based diet during the first 21 D of the trial. The experimental period lasted from day 21 to 35, during which birds were fed 4 different diets: a corn-soybean basal diet, taken as the control group, a basal diet containing 15% Spirulina (MA), a basal diet containing 15% Spirulina plus 0.005% Rovabio Excel AP (MAR), and a basal diet containing 15% Spirulina plus 0.01% lysozyme (MAL). Body weight gain (P < 0.001) and feed conversion rate (P < 0.001) were improved in control chickens, when compared with those fed with Spirulina. In addition, Spirulina increased the length of duodenum plus jejunum in relation to the other treatment (P < 0.01). Chickens on the MAL diet showed a considerable increase in digesta viscosity (P < 0.05) compared with the control group. Breast and thigh meats from chickens fed with Spirulina, with or without the addition of exogenous enzymes, had higher values of yellowness (b*) (P < 0.001), total carotenoids (P < 0.001), and saturated fatty acids (P < 0.001), whereas n-3 polyunsaturated fatty acid (P < 0.01) and α-tocopherol (P < 0.001) decreased, when compared with the control. In conclusion, the incorporation of 15% Spirulina in broiler diets, individually or combined with exogenous enzymes, reduced birds' performance through a higher digesta viscosity, which is likely associated with the gelation of microalga indigestible proteins. In addition, cell wall of Spirulina was successfully broken by the addition of lysozyme, but not by Rovabio Excel AP. Therefore, we anticipate that the combination of lysozyme with an exogenous specific peptidase could improve the digestibility of proteins from this microalga and avoid their detrimental gelation.
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High-level Spirulina supplementation can negatively affect chicken performance due to gelation of indigestible proteins causing increased digesta viscosity.
“One of major challenges regarding use of Spirulina as a feed addtitve at high level is that the gelation of its indigestible proteins causing birds to perform worse due to the increased digesta viscosity (32).”
From Potential of Spirulina platensis as a feed supplement for poultry to enhance growth performance and immune modulation (2023) · cites this paper as [32]
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- Authors
- Pestana, J. M., Puerta, B., Santos, H., Madeira, M. S., Alfaia, C. M., Lopes, P. A., Pinto, R. M. A., Lemos, J. P. C., Fontes, C. M. G. A., Lordelo, M. M., & Prates, J. A. M.
- Affiliations
- University of Lisbon (PT)
- Corresponding author
- Prates, J.A.M.
- ORCID
- Venue
- Poultry Science
- Publisher
- Elsevier BV
- Published
- 2020-05
- Volume
- 99
- Issue
- 5
- Pages
- 2519-2532
- ISSN
- 0032-5791 (ISSN-L)
- PMC
- PMC7597389
- OpenAlex
- W3009116358
- Cited by
- 119
- References
- 89
- Citations by year
- 2026: 21 · 2025: 24 · 2024: 23 · 2023: 16 · 2022: 16 · 2021: 14 · 2020: 5
- FWCI
- 9.14
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Poultry Science (publishedVersion, cc-by-nc-nd)
- PubMed Central (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion, other-oa)
- Funders
- Fundação para a Ciência e a Tecnologia (PTDC/CVT-NUT/5931/2014)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Nutrition and Physiology
- Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Meat and Animal Product Quality
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Aquaculture Nutrition and Growth
- Keywords
- Spirulina, Spirulina platensis, broiler chickens, exogenous enzymes, lysozyme, growth performance, carcass characteristics, meat quality, digesta viscosity, carotenoids, fatty acid composition, feed additives, alpha-tocopherol
- MeSH terms
- Animals, Animal Feed, Chickens, Diet, Male, Meat, Muramidase, Spirulina
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