Introduction: This research was conducted with the aim of investigating the effects of intra-egg injection on breast fatty acid profile in production broilers.
Materials & Methods: In total, 320 fertile eggs from Ras 308 beef mother herd at the age of 55 weeks with similar average weight (65 ± 1 g) were selected for intraovarian injection. Experimental treatments for intra-egg injection include, respectively, treatment 1: negative control (no injection), treatment 2: positive control (injection of 0.272 ml of normal saline solution), treatment 3: 40.8 micrograms of organic zinc, and treatment 4: 81.6 micrograms of organic zinc were planned. In total, 160 healthy chicks born from each treatment were selected in the form of a completely random design including 4 treatments and 4 repetitions of ten birds during three breeding periods, respectively, the initial period (1-14 days old), growth (15-28 days old) and final (29-42 days old) were reared based on the recommended requirements of the breeding authority and diets based on corn-soybean meal.
Results: The results showed that the numerical average of the groups injected with organic zinc compared to the non-injected group was lower for the ratio of unsaturated to saturated fatty acids (UFA/SFA) and for the ratio of omega-6 to omega-3 (ω- ω-3/6) more values were obtained. The total amount of saturated fatty acids (SFA) in the four studied treatments was 26.79, 30.24, 27.93 and 30.11, respectively. Also, the total amount of fatty acids with a double bond (MUFA) in the four studied treatments was 43.10, 43.42, 43.93 and 40.75, respectively. On the other hand, the total amount of unsaturated fatty acids with two double bonds (PUFA, n-6) in the four studied treatments was 21.18, 23.73, 22.68 and 25.93, respectively. Also, the total amount of unsaturated fatty acids with three double bonds (PUFA, n-3) in the four studied treatments was 0.80, 0.35, 0.47 and 0.92, respectively. On the other hand, the ratio of omega-6 to omega-3 in the four studied treatments was 28.04, 56.91, 51.55 and 32.75, respectively. In addition, the total unsaturated fatty acids in the four studied treatments were 65.83, 67.48, 67.05 and 67.82, respectively. Also, the ratio of unsaturated fatty acids to saturated fatty acids (UFA/SFA) in the four studied treatments was 2.46, 2.23, 2.40 and 2.25, respectively.
Conclusion: Injection into the egg yolk caused changes in the profile and quality of broiler chicken meat. |
