Dietary supplementation of Aspergillus oryzae meal and its effect on performance, carcass characteristics, blood variables, and immunity of broiler chickens
| Autor: | Mirco Corazzin, Magdalena Solka, Mehran Nosrati, Mehdi Zahirian, Alireza Seidavi |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Male
040301 veterinary sciences Aspergillus oryzae Performance Carcass Weight Gain Newcastle disease 0403 veterinary science Animal science Starter Food Animals Immunity medicine Animals Broiler chickens Immune response Meal biology Body Weight 0402 animal and dairy science Broiler Antibody titer food and beverages 04 agricultural and veterinary sciences biology.organism_classification 040201 dairy & animal science Animal Feed Diet Dietary Supplements Body Composition Animal Science and Zoology Animal Nutritional Physiological Phenomena Female medicine.symptom Weight gain Chickens Regular Articles |
| Zdroj: | Tropical Animal Health and Production |
| ISSN: | 1573-7438 0049-4747 |
| Popis: | This study investigated the effect of different levels and consumption periods of Aspergillus oryzae meal on performance, carcass characteristics, blood variables, and immunity of broiler chickens. A total of 270 (male and female) Ross 308 chicks were randomly assigned to 9 treatment groups. Two levels (2 g/kg diet and 4 g/kg diet as-fed) of Aspergillus oryzae meal (AO) and 4 consumption periods of AO (starter, grower, finisher, and entire period) in a 2 × 4 factorial arrangement were used. Compared with control, AO used during the entire rearing period increased weight gain, reduced relative weight of abdominal fat, aspartate aminotransferase (AST), and alanine aminotransferase (ALT) serum levels, and increased antibody titers against influenza and Newcastle disease vaccination and sheep red blood cells injection. Few differences in the variables considered were found if AO was added to broiler diets only during specific consumption periods, and between the two supplementation levels of AO. In conclusion, the addition of AO to the broiler diet can have beneficial effects in terms of performance, carcass composition, and health, but these positive effects were mainly reached adding AO for the entire rearing period. |
| Databáze: | OpenAIRE |
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