Document Type : Research Paper

Authors

1 Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran. E-mail: leilijamshidi70@gmail.com

2 Animal Science Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran. E-mail: hosseini1355@areeo.ac.ir

3 Corresponding Author, Animal Science Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran. E-mail: ah.alizadeh@areeo.ac.ir

Abstract

Introduction: Vitamins play an important role in improving the performance, immune system, and growth of birds. In recent years, due to the increase of the price of synthetic vitamin supplements and also due to the limitation of the use of commercial antioxidants, plant-based antioxidant sources have been considered in the poultry industry. Therefore, this study aimed to investigate the effects of herbal vitamin E supplements on production traits, humoral immune responses, and some blood parameters of broiler chickens.
Material and method: In a completely randomized design 480 Arian broiler chickens (one-day-old, mixed sexes) were allocated to four treatments, four replicates, and 30 birds in each replicate. Experimental treatments included: 1. basal diet (Contains 25 IU of synthetic vitamin E), 2. basal diet + 25 IU synthetic vitamin E, 3. basal diet + 50 mg herbal vitamin E supplement, and 4. basal diet + 100 mg herbal vitamin E Supplement. In this experiment, weight gain, feed intake, and feed conversion ratio (FCR) were measured. On day 40, two birds per replicate were randomly selected, weighed, and killed, and then the entire empty carcass and parts of the carcass including breast, thigh, neck back, and wings, abdominal fat, and some organs including heart and spleen were weighed. One day 40 days, to measure the concentration of total protein, albumin, triglyceride, cholesterol, low-density lipoprotein (LDL), high-density lipoprotein (HDL), and the activity of alanine aminotransferase, aspartate aminotransferase, and alkaline phosphatase enzymes, blood was collected from each replicate of 4 birds. On day 33 to measure antibody titer against Newcastle disease and influenza, 1 ml SRBC was injected into 4 birds in each repetition.
Result and discussion:  The results showed that the experimental treatments had no effects on feed intake, body weight, and FCR. Also, carcass characteristics including carcass percentage, breast, thigh, back, and neck percentage, abdominal fat, heart, spleen, and blood parameters were not affected by experimental treatments. Antibody titer against sheep red blood cell injection had no significant effect.
Conclusion: In total, according to the recommendation of commercial strains, the requirement of vitamin E is 50 IU, therefore in case of providing 25 IU of synthetic vitamin E in the diet, it is possible to provide the rest of the need up to 50 IU by using the herbal vitamin E supplement (at the rate of 50 mg per kilogram of feed) considering there are economic considerations.

Keywords

منابع
قربانی، کریم؛ قربانی، محمدرضا؛ تاتار، احمد؛ احمدوند، حسن (1399). تأثیر جایگزینی ویتامین E باتفاله انگور در جیره‌های حاوی چربی یا روغن بر عملکرد، فراسنجه‌های‌خونی، وضعیت آنتی‌اکسیدانی و ریخت شناسی روده باریک در جوجه‌های گوشتی. فصلنامه زیستشناسی جانوری، 13 (3)، 113-127.
 
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