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The Effects of Feed and Light Restrictions on Broiler Chickens: A Comparative Study | ||
| Al-Qadisiyah Journal of Veterinary Medicine Sciences | ||
| Volume 22, Special issue: Proceedings for the Scientific Conference of the College of Veterinary Medicine, University of Al-Qadisiyah (7th National/2nd International-2023), December 2023, Pages 55-62 PDF (365.09 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.29079/qjvms.2023.183458 | ||
| Author | ||
| Mushtaq Talib Bakr AL-Zuhariy | ||
| Department of Pathology and Poultry Diseases, College of Veterinary Medicine, University of Baghdad, Baghdad, IRAQ | ||
| Abstract | ||
| The feed and light restriction programs are two of the main growth curves that influence methods for improving productivity in broiler chickens. However, when birds are fed unlimited amounts, their rapid growth rate is accompanied by body fat accumulation, mortality, and a high frequency of metabolic problems that also weaken their immune system. The current research studied the effects of feeding and light restrictions on broiler productivity, humoral immunity (IgG), and histological changes in the liver, spleen, kidney, and intestine of Ross 308 broilers. The experiment involved 110 broiler chicks (divided into four groups, each with 25 chicks) with the following conditions: G1 served as a negative control group since they were not subject to restrictions or vaccination. G2: served as a positive control and received vaccination without any restriction. G3: Chicks were under feeding restriction for one hour every three hours. G4: Chicks were under light restriction for one hour every three hours. The chicks were vaccinated against Newcastle disease, influenza and Gumboro disease. Feed restriction was far superior to light restriction in terms of increasing growth performance and the immunological response to vaccination in broiler chickens. Compared to the first group, the fourth and second groups exhibited the highest pathological abnormalities in the liver, spleen, kidney, and intestine. Feeding limits of one hour every three hours improve the immune response and enhance broiler performance. | ||
| Keywords | ||
| Feed restriction; NDV; IgG; ELISA; Histopathological changes | ||
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