Apparent metabolisable energy and amino acid digestibility of microalgae Spirulina platensis as an ingredient in broiler chicken diets
| Autor: | Marcio Luis Busi da Silva, Diovani Paiano, Marcos J. Migliorini, Lft Albino, F. de C. Tavernari, C. Sordi, D. Surek, Lenilson F. Roza, Marcel M. Boiago |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Male Nitrogen Crude fibre 03 medical and health sciences Ingredient Feces Microalgae Spirulina Animals Spirulina (dietary supplement) Dry matter Amen Food science Amino Acids chemistry.chemical_classification 0402 animal and dairy science Broiler 04 agricultural and veterinary sciences General Medicine 040201 dairy & animal science Animal Feed Amino acid Diet 030104 developmental biology chemistry Energy density Animal Science and Zoology Animal Nutritional Physiological Phenomena Digestion Food Additives Energy Metabolism Chickens Food Science |
| Zdroj: | British poultry science. 59(5) |
| ISSN: | 1466-1799 |
| Popis: | 1. This work investigates the apparent metabolisable energy (AME), its nitrogen-corrected form (AMEn) and amino acid (AA) digestibility coefficients of the microalgae Spirulina platensis as an ingredient in broiler chicken diets. 2. One group of birds was fed with a basal control diet (BD), and another was fed with a test diet composed of the BD with the addition of the microalgae at a proportion of 200 g/kg. AME and AMEn were assessed by total excreta collection and indigestibility analysis using acid-insoluble ash (AIA) as a marker. 3. The microalgae comprised 888.0 g/kg dry matter (DM), 18.42 MJ/kg gross energy, 514.7 g/kg crude protein, 9.9 g/kg ether extract, 10.6 g/kg crude fibre, 94.4 g/kg ash, 3.1 g/kg Ca and 11.0 g/kg P. 4. The values obtained for AME (13.48 MJ/kg DM) and AMEn (11.72 MJ/kg DM) were higher (p 0.01) than those obtained using the AIA method (9.39-8.29 MJ/kg DM). The microalgae ileal digestibility coefficients were 0.80 ± 0.04 and 0.78 ± 0.04 for essential and non-essential AA, respectively. 5. Overall, the metabolisable energy content and digestibility of AA for S. platensis indicated that the microalgae are potentially an alternative nutrient source for broilers. The AIA method underestimated AME and AMEn in comparison to the total excreta collection method. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|