Division of Veterinary Medicine, Department of Health and Life Sciences, Faculty of Health, Medicine, and Life Sciences, Universitas Airlangga, Banyuwangi, Indonesia.
Department of Veterinary Surgery and Radiology, Faculty of Veterinary Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia.
Open Vet J. 2024 Aug;14(8):1850-1857. doi: 10.5455/OVJ.2024.v14.i8.13. Epub 2024 Aug 31.
Due to their efficient insulation, lack of sweat glands, relatively quick metabolic rate, and heightened sensitivity to heat, the poultry industry faces a serious problem with heat stress. Combining vitamins has been demonstrated to be more effective than implementing a single vitamin in reducing the effects of heat stress.
This study aimed to investigate the efficacy of the multivitamin combination in feed on the growth performance, egg quality, and antioxidant enzymes in laying hens exposed to heat stress.
A total of 28 Isa Brown strains aged 18 weeks were randomly designated into seven groups with four replications, i.e., (C-) normal temperature group, (C+) heat stress group, and the others with the administration of vitamin A and E (AE), vitamin K and C (KC), vitamin C and E (CE), vitamin E and selenium (ESE), and vitamin C and folic acid (CAF). Feed intake, feed efficiency, eggshell thickness, shape index, haugh unit (HU), yolk, and albumen index were evaluated at 22, 23, 24, and 25 weeks. Meanwhile, antioxidant enzymes were quantified at 22 and 25 weeks.
As a result, feed intake was reported a significant improvement in the AE and CE groups compared to the C+ group. Meanwhile, the feed efficiency was reported to be efficient in the CE and ESE groups. Based on egg quality evaluation, we reported significant shell thickness in the CE, ESE, and CAF groups compared to the C+; yolk index was reported slightly significant results in the AE and CAF groups; albumen index and HU were reported to increase significantly in the CAF group. Meanwhile, superoxide dismutase (SOD), malondialdehyde (MDA), and GPx activity were ameliorated significantly in the ESE and CAF groups.
Combinations of multivitamins can thereby enhance feed intake, feed efficiency, egg quality, and antioxidant activity. The CE, ESE, and CAF groups were found to have made equivalent improvements in the eggshell thickness, shape index, HU, yolk, and albumen index.
由于家禽缺乏汗腺、代谢率相对较快且对热敏感，隔热效果好，因此家禽业面临严重的热应激问题。研究表明，复合维生素的组合使用比单一维生素的使用更能有效减轻热应激的影响。
本研究旨在探讨在热应激条件下，在饲料中添加复合维生素对产蛋鸡生长性能、蛋品质和抗氧化酶的影响。
将 28 只 18 周龄的 Isa Brown 鸡随机分为 7 组，每组 4 个重复，即（C-）常温组、（C+）热应激组和添加维生素 A 和 E（AE）、维生素 K 和 C（KC）、维生素 C 和 E（CE）、维生素 E 和硒（ESE）、维生素 C 和叶酸（CAF）的组。在 22、23、24 和 25 周时评估采食量、饲料效率、蛋壳厚度、形状指数、哈夫单位（HU）、蛋黄和蛋清指数。同时，在 22 和 25 周时测定抗氧化酶。
结果表明，与 C+组相比，AE 和 CE 组的采食量显著提高，饲料效率显著提高。在蛋品质方面，CE、ESE 和 CAF 组的蛋壳厚度显著增加，AE 和 CAF 组的蛋黄指数略有显著增加，CAF 组的蛋清指数和 HU 显著增加。同时，ESE 和 CAF 组的超氧化物歧化酶（SOD）、丙二醛（MDA）和谷胱甘肽过氧化物酶（GPx）活性显著改善。
复合维生素的组合使用可以提高采食量、饲料效率、蛋品质和抗氧化活性。CE、ESE 和 CAF 组在蛋壳厚度、形状指数、HU、蛋黄和蛋清指数方面的改善效果相当。
