The objective of this study was to determine the ideal amino acid ratio for Japanese quail based on egg quality. In total, 120 Japanese quail were used. A completely randomized design was used with 12 treatments and 10 replicates per treatment. The treatments consisted of a balanced protein (BP) and the subsequent 11 diets were obtained by the 40% deletion of the BP a specific test for Lys, Met + Cys, Thr, Trp, Arg, Gly + Ser, Val, Ile, Leu, His, and Phr + Tyr. The trial lasted for 25 days. At the end of the trial, egg weight (EW), albumen height, albumen diameter, albumen index, yolk height, yolk diameter, yolk index, Haugh unit, eggshell weight (ESW), and eggshell percentage were measured. The ideal ratio was calculated when a statistical difference was detected using Dunnett’s test. Only the EW and ESW variables differed from those of BP. The ideal amino acid ratios considering Lys as 100 for EW and ESW were Met + Cys 82 and 83, Thr 60 and 68, Trp 18 and 21, Arg 109 and 112, Gly + Ser 99 and 102, Val 77 and 87, Ile 61 and 67, Leu 155 and 141, His 34 and 37, Phe + Try 134 and 133, respectively.
Objective: The studyʼs goal was to compare, apparent metabolizable energy corrected for nitrogen, apparent nitrogen retention, apparent fat digestibility and apparent protein digestibility (APD). Materials and Methods: Four isocaloric and isonitrogenous diets were fed to 80 Shaver hens for six weeks. Diets had a 2% inclusion of Celite indigestible marker. The four diets were (1) Conventional corn-soybean control, (2) 8% inclusion of high oleic peanut, (3) 4% inclusion of sweet potato by-product and (4) 4% sweet potato by-product +4% high-oleic peanut inclusion. Results: Control and birds fed a high-oleic peanut containing diet had greater apparent metabolizable energy values than other treatments, while diets containing sweet potatoes and high oleic peanuts had the least (p<0.0001). Apparent nitrogen retention for hens fed a diet containing sweet potatoes was significantly lower (p<0.0001) than other treatments. The diet containing both sweet potatoes and high oleic peanuts had highest apparent fat digestibility (p<0.0001) than other treatments. Control had the lowest apparent fat digestibility with the high oleic containing diet being slightly higher. The apparent protein digestibility of the diet containing sweet potatoes was higher than all treatments (p<0.0001). Control and the birds fed a diet containing high oleic peanuts were lower than the birds fed a diet with sweet potatoes included. Conclusion: This study implicated that diets containing sweet potato are a reasonable alternative feed ingredient for layers and sustainable utilization of a considerable agricultural waste by-product.
Objective: The present is study was conducted to determine the effect of feeding whole-in-shell peanuts or high-oleic peanuts to laying hens on ileal nutrient digestibility. Materials and Methods: A total of 16 birds per treatment were utilized for 6 weeks with ileal and fecal content being collected at trial termination. Apparent metabolizable energy corrected for nitrogen, apparent nitrogen retention, and apparent protein and fat digestibility were examined. Results: There were no significant differences in egg production, feed intake, or feed conversion between treatments. Apparent metabolizable energy and the apparent nitrogen retention was significantly lower in diets containing whole in shell peanuts than the other two treatment diets. Apparent fat digestibility was significantly higher for the treatment with whole in shell peanuts than the other diets, and the high oleic peanut containing diet was significantly higher than the control. Apparent protein digestibility was greater for control diet than the other treatments and the diet containing whole in shell peanuts had significantly lower protein digestibility compared to the diet with high oleic peanuts in it. With the apparent metabolizable energy and the apparent nitrogen retention for high oleic peanut containing diet being statistically the same as the control diet results could indicate that these hens can use the energy and nitrogen for their production. Conclusion: Results indicate that 8% inclusion of high oleic peanuts in diet could be beneficial however feeding whole in shell peanuts may have poorer digestibility results, but not reduce production performance. Both high oleic and whole in shell peanuts could be good alternative feed ingredients.
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