Animal Production Department, Agricultural & Biological Research Division, National Research Center, Dokki, Egypt.
Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt.
Anim Biotechnol. 2022 Feb;33(1):150-158. doi: 10.1080/10495398.2020.1864389. Epub 2021 Jan 7.
The current investigation was conducted to test the potential effects of feeding of vitamin A, L-carnitine, and folic acid on embryonic growth and post-hatch performance. A total of 450 fertile duck eggs were randomly distributed into two experiments of five groups/experiment (255 eggs/experiment and 45 egg/group). The experimental groups were: negative control (non-injected eggs), positive control (eggs were injected with 0.1 ml sterile deionized; DI water/egg), and three other treatments in which vitamin A, L-carnitine, and folic acid were injected (1 mg of each nutrient dissolved in 0.1 ml sterile DI water/egg). All- injected groups with vitamin A, L-carnitine, and folic acid increased the embryo weight, residual yolk weight, heart weight, hatchability percentage, and embryo length at the 25th day of incubation. At hatching, all micronutrients- injected treatments increased the duckling's weight, levels of blood hemoglobulin, plasma triiodothyronine, and thyroxin, insulin-like growth factor1, total protein, albumin, and globulin, compared with the controls in both experiments. Conclusively, the feeding of the present micronutrients showed positive impacts on embryonic development, hatchling health status of ducklings.
本研究旨在测试维生素 A、左旋肉碱和叶酸喂养对胚胎生长和孵化后性能的潜在影响。将 450 枚受精鸭蛋随机分为两个实验，每个实验分为五组（每组 255 枚鸭蛋，每组 45 枚鸭蛋）。实验组为：阴性对照组（未注射组）、阳性对照组（注射 0.1ml 无菌去离子水/枚鸭蛋）和另外三组，每组分别注射维生素 A、左旋肉碱和叶酸（每种营养素 1mg 溶解在 0.1ml 无菌去离子水中/枚鸭蛋）。所有注射维生素 A、左旋肉碱和叶酸的组在孵化第 25 天增加了胚胎重量、剩余蛋黄重量、心脏重量、孵化率和胚胎长度。孵化时，与对照组相比，所有微量营养素注射处理组的雏鸭体重、血液血红蛋白水平、血浆三碘甲状腺原氨酸、甲状腺素、胰岛素样生长因子 1、总蛋白、白蛋白和球蛋白水平均有所增加。综上所述，本研究中微量营养素的喂养对胚胎发育和雏鸭的健康状况有积极影响。
