Rasha Fajer Al-Jebory(1)* and Fadhil Rassol Al-Khfajy(1)
(1). Department of Animal Science, Agriculture College- Al-Qasim Green University, Iraqi.
(*Corresponding author: Rasha Fajer Al-Jebory. E-Mail: Rahsa.fajer1989@agre.uoqasim.edu.iq ).
Received: 21/10/2023 Accepted: 24/12/2023
Abstract:
This experiment was conducted in the farm of Al-Anwar Poultry Company in Babylon/Al-Muradiyah Government, for the period from 7/25/2023 to 8/29/2023, where 300 broiler chickens (Ross 308) were used, divided into 5 treatments, with 3 replicates for each treatment and each replicate. 20 chicks, and nano-methionine-zinc was added to the diet at a concentration of 0, 1, 2, 3, and 4 mg/kg feed for treatments T1, T2, T3, T4, and T5, respectively. All birds in the treatments were exposed to heat stress (35±1 degrees Celsius) for the duration of the experiment (35 days). The results showed a significant decrease in the concentration of glucose, cholesterol, uric acid, triglycerides, and MDA (Malondialdehyde) in nano-methionine-zinc addition treatments compared to the control treatment. A significant improvement occurred for treatments T3, T4, and T5 in the concentration of LDL (Low-density lipoprotein), and the two treatments T4 also improved. In addition, T5 in the concentration of VLDL (Very low-density lipoprotein) compared to the control treatment. A significant increase in the concentration of glutathione peroxidase was shown in favor of the treatments T2, T4 and T5 compared to the control treatment. A significant increase in the level of the enzymes AST (Aspartate aminotransferase) and ALT (Alanine aminotransferase) was shown in the blood of the T1 treatment birds compared to the rest of the study treatments. There was a significant increase in the level of antibodies against infectious bronchitis in favor of the T4 treatment birds. The level of antibodies against Newcastle disease also increased in the blood of the T3 and T5 treatment birds compared with the T1 control treatment.
Keywords: amino acid nanoparticles, thermal stress, broiler chickens, nanotechnology.
Full paper in Arabic: pdf