Digestible Arginine Requirements in Hy-Line W-36 Laying Hens: Effects on Performance, Egg Characteristics, and Plasma Parameters During 40 to 46 Weeks of Age
| Autor: | Ahmad Azizi, Aliasghar Saki, Hossein Jahanian Najafabadi, Pouya Zamani, Zeinab Bardel |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Poultry Science Journal, Vol 11, Iss 1, Pp 103-113 (2023) |
| Druh dokumentu: | article |
| ISSN: | 2345-6604 2345-6566 |
| DOI: | 10.22069/psj.2022.20355.1832 |
| Popis: | This study was conducted to estimate digestible arginine (Arg) requirements for performance and egg quality parameters in Hy-Line W-36 laying hens from 40 to 46 weeks of age. A total of 150 laying hens were arranged in a completely randomized design with 5 treatments, 5 replicates and 6 hens in each. These treatments included 0.81, 0.86, 0.91, 0.96, and 1.01 % digestible Arg. At the end of experiment, data were obtained in performance, egg quality, and quantity parameters as well as plasma levels of cholesterol, uric acid, globulin, and insulin-like growth factor (IGF-1). Results have shown that feed conversion ratio, egg production, and egg mass improved by supplementing 0.86 digestible Arg in the diet compared to other treatments (P < 0.05). Moreover, these items significantly affected by the interaction of treatments and weeks. In the last three weeks of this experiment, the use of 0.86, 0.91, 0.96, and 1.01 % digestible Arg significantly increased egg mass and egg roduction. Plasma concentrations of globulin, cholesterol, and uric acid were not affected by dietary Arg levels. However, a significant increase in plasma IGF-1 was shown by supplementation of % 0.91 Arg (P < 0.05). Based on quadratic equations, the optimum levels of digestible Arg for egg production, egg mass, feed conversion ratio, and IGF-1 were 0.917, 0.917, 0.908, and 0.970%, respectively. |
| Databáze: | Directory of Open Access Journals |
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