Addition of Different Levels of Humic Substances Extracted from Worm Compost in Broiler Feeds

Different sources and inclusion levels of humic substances (HS) have been tested in broiler rations as an alternative to the addition of growth promoter antibiotics (GPA) with promising results. The current study was carried out to assess the influence of HS extracted from worm compost on broiler pr...

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Published in:Animals (Basel) 2021-11, Vol.11 (11), p.3199
Main Authors: Domínguez-Negrete, Alejandra, Gómez-Rosales, Sergio, Angeles, María de Lourdes, López-Hernández, Luis Humberto, Reis de Souza, Tercia Cesaria, Latorre-Cárdenas, Juan David, Téllez-Isaias, Guillermo
Format: Article
Language:English
Subjects:
Animal manures
Animals
Antibiotics
antioxidant
Antioxidants
Bacteria
broilers
Composting
Composts
Conversion ratio
Diet
Feed conversion
Feeds
Humic substances
Humification
Jejunum
Lactic acid
Lactic acid bacteria
Manures
Meat
Oocysts
Organic matter
Poultry feed
Promoters
Scavenging
Tibia
Variance analysis
Ventilation
Vermicomposting
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Summary:Different sources and inclusion levels of humic substances (HS) have been tested in broiler rations as an alternative to the addition of growth promoter antibiotics (GPA) with promising results. The current study was carried out to assess the influence of HS extracted from worm compost on broiler production parameters, carcass yield, tibia characteristics, lactic acid bacteria (LAB) counts, excretion of Eimeria oocysts, and antioxidant status of breast meat. A total of 1200 broilers were used, housed in groups of 30 per pen, and assigned to five treatments: 1 = basal diet with GPA (positive control), 2 = basal diet without GPA (negative control), 3–5 = basal diet with 0.15, 0.30, and 0.45% HS, respectively. The data was subjected to a variance analysis and orthogonal contrasts. The FI decreased linearly (p < 0.05) from 1–14, 29–42, and 1–42 days as the inclusion of HS in the feed increased. The FCR had quadratic responses (p < 0.01) from 29–42 and 1–42 days concerning the HS inclusion levels. Lactic acid bacteria was higher (p ˂ 0.05) in ten-day-old chicks with 0.45% HS in the diet. The 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity antioxidant potential decreased linearly (p < 0.05) concerning increasing HS in the feed. The results indicate that HS can be used as growth promoters in broiler feeds.
ISSN:2076-2615
2076-2615
DOI:10.3390/ani11113199