Responses of broiler chicken to different oil levels within constant energy levels from 20 to 40 days of age under hot weather conditions
Open Access
- 1 January 2021
- journal article
- research article
- Published by Taylor & Francis Ltd in Italian Journal of Animal Science
- Vol. 20 (1), 664-676
- https://doi.org/10.1080/1828051x.2021.1906169
Abstract
In total, 144 Arbour Acres broiler chickens were distributed among four treatment groups (six replicates per treatment; six chickens per replicate) during days 20–40 of age. The chickens were offered iso-caloric and iso-nitrogenous diets containing four dietary oil levels (DOL): 0 (oil non-supplemented diet, control), 2, 4, and 6% in a relatively low-energy diet (12.4 MJ ME/kg diet). During the experimental period, the chickens were reared under natural hot weather conditions (32.5 ± 4 °C, 54 ± 7% relative humidity). Growth, feed conversion ratio (FCR), protein (PCR), metabolisable energy (MECR) ratio, and European production efficiency index (EPEI) were similar among groups fed up to 4% DOL but raising DOL to 6% impaired these traits. Besides, DOL at 6% decreased digestibility of dry matter, crude protein, and ash. Furthermore, a 6% DOL showed the lowest digestibility of dry matter, crude protein, and ash. Dressing percentage was the highest in 2%, and abdominal fat percentage showed the same trend in 6% DOL, but the gizzard percentage was the lowest in 6% DOL. The liver percentage increased significantly with fat/oil inclusion compared to the control. Meat dry matter and either extract increased considerably due to offering different DOLs, with maximum values at 6%. The inclusion of dietary oils in diets significantly increased serum malondialdehyde (MDA) but decreased serum total antioxidant capacity (TAC)/MDA ratio compared to the 0% DOL. In conclusion, under natural summer conditions, from 20 to 40 days of age, broilers' best productive characteristics were achieved using 0-2% DOL, and the best immune response was obtained for 4–6% DOL.Keywords
Funding Information
- King Abdulaziz University, Jeddah, Saudi Arabia (G-108-155-)
This publication has 54 references indexed in Scilit:
- Sand intake by laying hens and its effect on egg production parametersJournal of Animal Physiology and Animal Nutrition, 2008
- Influence of Dietary Energy and Poultry Fat on the Response of Broiler Chicks to Heat ThermInternational Journal of Poultry Science, 2008
- Nutrient requirements of poultry at high temperatures.Published by CABI Publishing ,2008
- Effect of Different Levels of Diet Dilution During Finisher Period on Broiler Chickens Performance and Carcass CharacteristicsInternational Journal of Poultry Science, 2007
- Oil and fat in broiler nutritionBrazilian Journal of Poultry Science, 2005
- Energieumsatz wachsender Broiler in Abhängigkeit von der UmgebungstemperaturArchives of Animal Nutrition, 1991
- An Apparently New Disease of Chickens: Avian NephrosisAvian Diseases, 1962
- A simple method for the determination of serum cholesterolClinica Chimica Acta; International Journal of Clinical Chemistry, 1960
- A Specific and Reasonably Accurate Method for Routine Determination of Plasma TriglycerideScandinavian Journal of Clinical and Laboratory Investigation, 1960
- Estimation of Plasma Phosphatase by Determination of Hydrolysed Phenol with Amino-antipyrineJournal of Clinical Pathology, 1954