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Addition of Different Levels of Humic Substances Extracted from Worm Compost in Broiler Feeds.
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.
Afiliação
  • Domínguez-Negrete A; Faculty of Natural Sciences, Autonomous University of Queretaro, Av. de las Ciencias S/N, Juriquilla, Queretaro 76230, Mexico.
  • Gómez-Rosales S; National Center of Disciplinary Research in Animal Physiology and Genetics, INIFAP, Km 1 Carretera a Colon Ajuchitlán, Queretaro 76280, Mexico.
  • Angeles ML; National Center of Disciplinary Research in Animal Physiology and Genetics, INIFAP, Km 1 Carretera a Colon Ajuchitlán, Queretaro 76280, Mexico.
  • López-Hernández LH; National Center of Disciplinary Research in Animal Physiology and Genetics, INIFAP, Km 1 Carretera a Colon Ajuchitlán, Queretaro 76280, Mexico.
  • Reis de Souza TC; Faculty of Natural Sciences, Autonomous University of Queretaro, Av. de las Ciencias S/N, Juriquilla, Queretaro 76230, Mexico.
  • Latorre-Cárdenas JD; Department of Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA.
  • Téllez-Isaias G; Department of Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA.
Animals (Basel) ; 11(11)2021 Nov 09.
Article em En | MEDLINE | ID: mdl-34827930
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.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Animals (Basel) Ano de publicação: 2021 Tipo de documento: Article País de afiliação: México País de publicação: Suíça

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Animals (Basel) Ano de publicação: 2021 Tipo de documento: Article País de afiliação: México País de publicação: Suíça