Addition of Different Levels of Humic Substances Extracted from Worm Compost in Broiler Feeds
| Autor: | María de Lourdes Angeles, Juan David Latorre-Cárdenas, Luis Humberto López-Hernández, Tércia Cesária Reis de Souza, Guillermo Tellez-Isaias, Alejandra Domínguez-Negrete, Sergio Gómez-Rosales |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Antioxidant
antioxidant medicine.medical_treatment Veterinary medicine Positive control engineering.material Article Eimeria Excretion chemistry.chemical_compound Animal science SF600-1100 medicine General Veterinary biology broilers Chemistry Compost humic substances Broiler food and beverages biology.organism_classification Lactic acid lactic acid bacteria QL1-991 engineering Animal Science and Zoology Zoology Bacteria performance |
| Zdroj: | Animals Volume 11 Issue 11 Animals, Vol 11, Iss 3199, p 3199 (2021) Animals : an Open Access Journal from MDPI |
| ISSN: | 2076-2615 |
| DOI: | 10.3390/ani11113199 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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