Performance, Carcass Characteristics, and Meat Quality of Broiler Chickens Fed β-Mannanase and Two Levels of Energy
| Autor: | M. A. R. Jalal, H. A. H. Zakaria, F. M. Hayajneh, G. M. Mehyar |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Tropical Animal Science Journal, Vol 46, Iss 2 (2023) |
| Druh dokumentu: | article |
| ISSN: | 2615-787X 2615-790X |
| DOI: | 10.5398/tasj.2023.46.2.190 |
| Popis: | This study aimed at evaluating the response to supplementation of β-Mannanase with two levels of energy on performance, carcass yield, and meat quality of 1600 1-d-old straight run Indian River broilers which were randomly allotted to 4 dietary treatments (10 replicates/treatment, 40 chicks per replicate) in a 35-d feeding trial. The trial consisted of 2 phases, starter (0 to 14 d) and grower (15 to 35 d). The experiment was designed in a 2 x 2 factorial arrangement. The first factor was the energy level of the ration consisted of 2 levels, i.e., a low energy level with 2.900 kcal ME/kg during the starter phase and 3.000 kcal ME/kg during the grower phase; and a normal energy level with 3020 kcal ME/kg during starter phase and 3120 kcal ME/kg during grower phase, with variations based on the content of feed grade soybean oil. The second factor was the level of β-Mannanase in the diet consisted of 2 levels, i.e., ration without β-Mannanase (BETAMINUS: 0%) and ration with 0.05% β-Mannanase (BETAPLUS: 0.05%). Feeding low ME increased feed intake (p |
| Databáze: | Directory of Open Access Journals |
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