Effect of adding different concentrations of mix-oil solution to drinking water of broiler chickens Ross 308 and breeders at elevated temperatures on productive performance

Background: The mix-oil solution added to broiler drinking water was tested at Al-Anwar Poultry Station in Babil Governorate, Iraq, from 10/7/2022 to 14/8/2022.Methods: 300 Ross 308 broiler chicks, one day old and unsexed, A cohort of chicks, possessing an average mass of 40 g, were subjected to random allocation into five distinct treatments. Each treatment was replicated thrice, with each replicate consisting of 20 chicks. and given mix-oil in their drinking water from day one: T1: control. T2: 0.25 ml MIX-OIL L-1, T3: 0.50, T4: 0.75, T5: 1. The experimental birds received 28–35–28 c.Results: Treatment T5 and all addition treatments outperformed the control treatment in live weight (p < 0.01). Total weight gain was significantly better for treatment T5 (p < 0.01) than T1 and T4, but not significantly different. T3, T2.The total consumption rate was much higher (p < 0.01). The T3 therapy outperformed all other added therapies.The T5 treatment had a "significant" improvement in total feed conversion coefficient (p < 0.01) over the T4 treatment, but not the control treatment.The addition treatments had 11.66% fewer deaths than the control treatment (p < 0.05).Conclusion: High temperatures can reduce spent feed, increase the growth of harmful bacteria, and infect the digestive system, affecting broiler performance. However, adding a balanced mixture of highly concentrated fatty acids can reduce bacteria growth and numbers, increasing intestinal cell activity and surface area. It enhances nutrition uptake and boosts broiler output in heat stress.