Effect Add Different Concentrations of Organic, Inorganic, and Nano-Selenium to Diet of Broiler Chickens (Ross 308) that Exposed to Heat Stress on Certain Productive Traits

Abstract

This study was conducted at Al-Anwar Poultry Station in Babil Governorate Iraq for 35 days, from July 10, 2022 to August 17, 2022, in order to demonstrate the effects of supplementing broiler diets with varying concentrations of organic, inorganic and nano-selenium (Se) on certain production traits and under conditions of heat stress, 560 chicks of one day old (Ross 308) were used without identifying their sex and divided randomly into 7 transactions with 4 replicates for each transaction, and each replicate included 20 chicks. The first transaction, T1, was the control transaction without addition, and organic selenium was added in the second and third transactions (T2 and T3) at a concentration of 1 and 1.5 mg / kg, respectively, while the fourth and fifth transaction (T4 and T5) inorganic selenium was added at a concentration of 1 and 1. 5 mg / kg, respectively, while the sixth and seventh transaction (T6 and T7) included the addition of nano-Se at a concentration of 1 and 1.5 mg / kg, respectively. The results of the study showed the following: (1) Highly significant (P≤0.01) superiority of T2 transaction over all studied transactions in live body weight and overweight. (2) There was a significant (P≤0.01) superiority of the rate of feed consumption for the transactions T2, T5 over the T1, T3, T4, T6, T7. As for the food conversion coefficient, the transaction T4, T6 was more “significant” improvement at a level of (P≤0.01) than the rest of the transactions. The control transaction was the least improved transaction. (3)The data recorded a “significant” decrease for all addition transactions in the percentage of total deaths compared to the control transaction. T5 was similar to T1, but with a lower rate.