Impact of dietary incorporation of Spirulina (Arthrospira platensis) and exogenous enzymes on broiler performance, carcass traits and meat quality
| Autor: | Paula Lopes, J Prates, José M. Pestana, Cristina M. Alfaia, Marta S. Madeira, Rui Pinto, Helena Santos, J. P. C. Lemos, M.M. Lordelo, B. Puerta, Carlos M. G. A. Fontes |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Male
Meat Biology Body weight Metabolism and Nutrition meat quality 03 medical and health sciences Basal (phylogenetics) chemistry.chemical_compound Animal science Spirulina exogenous enzyme Animals 030304 developmental biology lcsh:SF1-1100 Spirulina (genus) 0303 health sciences growth performance 0402 animal and dairy science Broiler food and beverages 04 agricultural and veterinary sciences General Medicine biology.organism_classification Animal Feed 040201 dairy & animal science Diet broiler chicken chemistry Exogenous enzymes Arthrospira platensis Muramidase Animal Science and Zoology lcsh:Animal culture Lysozyme Corrigendum Chickens |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP Poultry Science Poultry Science, Vol 99, Iss 5, Pp 2519-2532 (2020) Poultry Science, Vol 99, Iss 8, Pp 4100-(2020) |
| Popis: | 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 a-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 info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
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