Microalgal-based feed: promising alternative feedstocks for livestock and poultry production

Saadaoui, Imen; Rasheed, Rihab; Aguilar, Ana; Cherif, Maroua; Jabri, Hareb Al; Sayadi, Sami; Manning, Schonna R.

doi:10.1186/s40104-021-00593-z

Cited by 97 publications

(56 citation statements)

References 144 publications

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“…Microalgae are photosynthetic organisms that have high potential as carbon neutral producer and alternative feedstocks for livestock [1] and aquaculture [2]. Prediction of biomass in cultivation of microalgae is a difficult task due to the complex interplay of growth conditions such as light flux, medium concentration, and temperature [20].…”

Section: Discussionmentioning

confidence: 99%

“…Microalgae, which grow faster and show higher carbon fixation rates than higher plants, are excellent candidates for carbon neutral producer. Some species of microalgae have been used as live feed for fish larvae and are expected as alternative feedstocks for livestock [1] and aquaculture [2] because of their high nutritional quality. Other species of microalgae were reported as superior producers of bioactive chemicals [3], biofuels [4,5], and biohydrogen [6], which would potentially revolutionize the production of cosmetics, health foods, and fossil-based energy.…”

Section: Introductionmentioning

confidence: 99%

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A parametric logistic equation with light flux and medium concentration for cultivation planning of microalgae

Kambe

Hirokawa²,

Koshi

et al. 2022

Preprint

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Microalgae are considered to be promising producers of bioactive chemicals, feeds, and fuels from carbon dioxide by photosynthesis. Thus, the prediction of microalgal growth profiles is important for the planning of cost-effective and sustainable cultivation-harvest cycles. This paper proposes a mathematical model capable of predicting the effect of light flux into culture and media concentration on the growth profiles of microalgae by incorporating these growth-limiting factors into the logistic equation. The specific form of the equation is derived based on the experimentally measured growth profiles of Monoraphidium sp., a microalgal strain isolated by the authors. Using a cross-validation method, it is shown that the proposed model has the ability to predict necessary incident light flux into culture and initial media concentration for harvesting target biomass at target time. Finally, the model-guided cultivation planning is performed and is evaluated by comparing the result with the experimental data.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A parametric logistic equation with light flux and medium concentration for cultivation planning of microalgae

Kambe

Hirokawa²,

Koshi

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Microalgae, which grow faster and show higher carbon fixation rates than higher plants, are excellent candidates for carbon neutral producers. Some species of microalgae have been used as live feed for fish larvae and are expected as alternative feedstocks for livestock [ 1 ] and aquaculture [ 2 ] because of their high nutritional quality. Other species of microalgae were reported as superior producers of bioactive chemicals [ 3 ], biofuels [ 4 , 5 ] and biohydrogen [ 6 ], which would potentially revolutionize the production of cosmetics, health foods and fossil-based energy.…”

Section: Introductionmentioning

confidence: 99%

A parametric logistic equation with light flux and medium concentration for cultivation planning of microalgae

Kambe

Hirokawa²,

Koshi

et al. 2022

J. R. Soc. Interface.

View full text Add to dashboard Cite

Microalgae are considered to be promising producers of bioactive chemicals, feeds and fuels from carbon dioxide by photosynthesis. Thus, the prediction of microalgal growth profiles is important for the planning of cost-effective and sustainable cultivation–harvest cycles. This paper proposes a mathematical model capable of predicting the effect of light flux into culture and medium concentration on the growth profiles of microalgae by incorporating these growth-limiting factors into a logistic equation. The specific form of the equation is derived based on the experimentally measured growth profiles of Monoraphidium sp., a microalgal strain isolated by the authors, under 16 conditions consisting of combinations of incident light fluxes into culture and initial medium concentrations. Using a cross-validation method, it is shown that the proposed model has the ability to predict necessary incident light flux into culture and initial medium concentration for harvesting target biomass at a target time. Finally, model-guided cultivation planning is performed and is evaluated by comparing the result with experimental data.

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“…Overall, microalgae are considered a sustainable protein source for animal diets that do not require farmland. With future advances in biomass harvesting technology and efficiency, microalgae may provide a cost-effective protein alternative that does not hinder growth performance (Saadaoui et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Laser Environmental Enrichment and Spirulina Algae Improve Broiler Growth Performance and Alter Myogenic Gene Expression and pectoralis major Dimensions

2021

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Sustainability in poultry production is evident in efforts to reduce inputs and a focus on bird welfare and livability. Dietary protein alternatives to traditional sources such as soybean meal aim to meet or exceed efficiency benchmarks and be cost-effective. Environmental enrichment encouraging activity may reduce the occurrence of the predominant breast muscle myopathy, woody breast (WB); interventions to minimize muscle damage and economic loss have yet to be established. The study objectives were to maintain or improve broiler performance and breast quality through environmental enrichment and partially replacing dietary soybean meal with Spirulina. Twelve hundred Ross 708 broilers were randomly assigned to enrichment (LASER; laser enrichment, or CON; no laser enrichment) and diet (algae; 2.5% Spirulina algae, or control) in a 2 × 2 factorial design for 49 days. The same 70 randomly selected birds were examined for contact dermatitis wk 1–6. Breast width was measured weekly on 200 growing broilers beginning on d22. On d42 and 49 slaughter, WB score was assigned using a tactile 0–3 scale and the right breast filet was weighed (n = 200). RNA isolated from 30 breast muscle samples each at d42 and 49 was analyzed using real-time qPCR. Laser enrichment increased body weight at all timepoints (d49: 0.148 kg, P < 0.001). Feed conversion ratio was improved in LASER-enriched birds by 3 points in the starter period (P = 0.003). Breast width was increased at all timepoints in LASER-enriched birds compared to CON (d49: 0.47 cm, P < 0.001). Algae inclusion increased body weight at d28 (0.059 kg, P = 0.005). At d42, 12% more LASER-enriched WB scores were 0 (normal) compared to CON, and at d49, 15% more enriched scores were 0. At d42, 5% more algae-fed broiler scores were 0 compared to control. LASER-enriched broiler breast tissue showed upregulated expression of myogenin, muscle regulatory factor 4, insulin-like growth factor 1, and myostatin compared to CON (P < 0.01). Both laser enrichment and algae inclusion improved broiler performance without negatively impacting environmental or physiological outcomes. LASER enrichment decreased severity of WB score and positively shifted myogenic gene expression in the breast muscle at slaughter.

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Microalgal-based feed: promising alternative feedstocks for livestock and poultry production

Cited by 97 publications

References 144 publications

A parametric logistic equation with light flux and medium concentration for cultivation planning of microalgae

A parametric logistic equation with light flux and medium concentration for cultivation planning of microalgae

A parametric logistic equation with light flux and medium concentration for cultivation planning of microalgae

Laser Environmental Enrichment and Spirulina Algae Improve Broiler Growth Performance and Alter Myogenic Gene Expression and pectoralis major Dimensions

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