Effect of dietary supplementation with algae extracts on growth performance and caecal microbiota of broiler chickens

1. The objective of this study was to test the dose response of dietary supplementation with algae extracts rich in marine-sulphated polysaccharides (MSP1 and MSP2) on the growing performance, body composition at slaughter and caecal microbiota of broiler chickens. 2. Male broiler Ross 308 chicks 1-...

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Published in:	British poultry science Vol. 65; no. 4; pp. 403 - 414
Main Authors:	Coudert, E., Baeza, E., Zemb, O., Bousleh, A., Cauquil, L., Farizon, Y., Hondelatte, A., Germain, K., Boulmane, R., Nyvall-Collen, P., Berri, C.
Format:	Journal Article
Language:	English
Published:	England Taylor & Francis 03-07-2024
Subjects:	algae extracts Animal Feed - analysis Animal Nutritional Physiological Phenomena - drug effects Animals Body Composition - drug effects caecal microbiota Cecum - microbiology Chicken Chickens - growth & development Chickens - microbiology Chickens - physiology Diet - veterinary Dietary Supplements - analysis Dose-Response Relationship, Drug Gastrointestinal Microbiome - drug effects growth Life Sciences Male meat quality Polysaccharides - administration & dosage Polysaccharides - pharmacology Random Allocation short-chain fatty acids meat quality caecal microbiota Chicken growth algae extracts short-chain fatty acids Growth
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Summary:	1. The objective of this study was to test the dose response of dietary supplementation with algae extracts rich in marine-sulphated polysaccharides (MSP1 and MSP2) on the growing performance, body composition at slaughter and caecal microbiota of broiler chickens. 2. Male broiler Ross 308 chicks 1-d-old were distributed into eight groups, a control group (unsupplemented), four groups supplemented with increasing doses of algae extract MSP1 (40, 81, 121 and 162 g/ton feed) and three groups supplemented with increasing doses of algae extract MSP2 (40, 81 and 162 g/ton feed). Each group comprised six pens of 56 chickens. 3. All chickens were reared under challenging conditions, i.e. high rearing density of 42 kg/m 2 , fed growing and finishing diets containing, palm oil, rye and high levels of wheat and subjected to short daily fasting periods. The growth performance was recorded during rearing. At 10, 22 and 31 d of age, 12 chickens per group were euthanised to collect the caecal contents and determine microbiota composition and short-chain fatty acid levels. At d 35, the quality of litter and the condition of feathers, footpads and tarsals were scored. At d 36, 7 chickens per pen were slaughtered under commercial conditions to determine carcass composition and breast meat quality (ultimate pH and colour). 4. Algal extract MSP1 increased the weight of the caeca and butyrate concentration in the caeca at d 22 (p ≤ 0.05). It increased the ultimate pH of breast fillet measured after slaughter at d 36 (p ≤ 0.05). Moreover, the group receiving 162 g/t MSP1 had a more diverse microbiota at d22. However, algal extract MSP2 had negligible effect on the different measured parameters.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0007-1668 1466-1799 1466-1799
DOI:	10.1080/00071668.2024.2328676