The present study was carried out to investigate the effect of using 10 % and 20 % corn distiller's dried grains with solubles (CDDGS) as partial replacement for yellow corn and soybean meal with or without adding 0.05 % Galzym powder on productive performance, some blood plasma parameters and the immune response of broiler chicks. A total number of 240 day-old, unsexed broiler chicks were randomly assigned to six treatments 40 chicks each. The first group was fed basal (starter and grower-finisher) diets without supplements and considered as control (T1) group, the second group was fed as T1 plus 0.05 % Galzym (T2), the third group was fed 10 % CDDGS (T3), the 4 th group was fed as T3 plus Galzym addition, the 5 th group was fed 20 % CDDGS (T5), the 6 th group was fed as T5 plus Galzym (T6). The obtained results showed that final live body weight values increased by CDDGS replacement. The highest final live body weight, total feed intake and total body weight gain values were recorded by the birds fed 20 % CDDGS level with Galzym as compared to other experimental treatments. Also, the lowest total feed conversion values were recorded for the birds fed 20% CDDGS plus Galzym as compared to other experimental birds. The results showed that there were significant increase in the experimental treatments in plasma total protein and total triglycerides values compared with the control treatment. Moreover, there were insignificant increases in total cholesterol values compared with the control group. Also, there were significant decreases in plasma inorganic phosphorus values as compared to the control treatment. The specific immunity against avian influenza disease virus (AIDV) titer was significantly increased when using 10 % CDDGS with Galzym supplementation in the diets after vaccination as compared to other experimental samples. Also, there were insignificant differences in the Newcastle disease virus (NDV) titer after vaccination among all the experimental treatments. It is concluded that using CDDGS up to 20% in broiler diets as partial replacement for yellow corn and soybean meal with or without Galzym supplementation improved growth performance of broiler chicks and enhanced the specific immunity against avian influenza disease virus titer, with no adverse effects on their physiological blood parameters.
Current experiment conducted on 5850 hatching egg (av. 59.5g) purchased from EL-KASABE for investment Shiver® Breeder farms (34 weeks old). A total of 2250 egg were assigned into 5 treatments of 450 egg representing storage periods of (0, 7, 14, 21 and 29 days) and the other 3600 egg were subdivide into 4 groups of 900 egg each according to SPIDES-short period incubation (fresh, 0, 2.5 and 5 hours) at 99.5°F. After SPIDES, treated egg placed for 2.5 hours in setter room and back into storage room at 12-16 o C and 75-85% relative humidity according to the storage time. Egg storage for 7 days had better (P≤0.05) values for fertile egg, hatchability percentages, hatch window, embryonic mortality (early, mid and late), piped and chick quality. However, storage until 29 days showed the lowest significantly (P≤0.05) percent hatchability, hatchability for fertile egg, long incubation time, highest number of total embryonic morality and lowest number of chick quality. SPIDES (2.5 h) recorded higher hatchability traits, but SPIDES 5 hours showed the highest significantly (P≤0.05) number of early embryonic mortality and lowest number of chick quality. Accordingly, when egg stored for more than 7, 14, 21 and 29 days, it should be SPIDES-short period incubation 2.5 h every five days once, twice or fourth time during storage period to minimize the harmful impact of storage.
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