ABSTRACT:The present study aimed to investigate the effect of dietary green tea and dried seaweeds supplementation for local Sinai hens at late phase of production (52-64 wks of age) on egg production, egg quality, physiological and immunological performance. Two hundred and seventy Sinai hens-52 wks-old were randomly assigned to 9 equal experimental treatments (30 hens each were divided into equal three replicates). Experimental groups were fed as follows: the first group fed a basal diet (control group),the second and third groups were fed a basal diet supplemented with green tea by 0.1% and 0.2%, respectively, the fourth and fifth groups were fed a basal diet supplemented with brown seaweed by 0.1% and 0.2%, respectively, the sixth and seventh groups were fed a basal diet supplemented with green seaweed 0.1% and 0.2% , respectively and the eighth and ninth group were fed a basal diet supplemented with red seaweed by 0.1% and 0.2%,.The obtained results indicated that, live body weight (LBW) of Sinai hens at 64 wks of age and change in body weight (CBW) during the experimental period were significantly improved with green tea as compared with the control diet. Laying rate, and egg mass were significantly improved by green tea and dried seaweed supplementation as compared to the control group. Feed consumption (FC) was increased by supplementing green tea and dried seaweed, however, feed conversation ratio was improved compared to the control without significant differences during the experimental period. Serum total cholesterol, LDL, VLDL, triglycerides and total lipids values were significantly decreased, while, HDL cholesterol was significantly increased for different dietary supplementations as compared to the control group. Supplementing green tea and dried green seaweed had a significant effects on serum total protein, albumin and globulin as compared to the control group. Liver and kidney functions were improved by addition of green tea and seaweed to hen's diet. Therefore, dietary supplementation of green or red seaweeds by 0.1% to laying hens diet at the late phase of production could be used to improve egg production, egg quality, physiological and immunological performance of Sinai laying hens.
The goal of this research was to find out more about the effect of spraying garlic oil solution before incubation as natural products for egg disinfection of hatching eggs on hatching traits, post-hatch chick growth and physiological response of hatched Sinai chicks. Six hundreds of hatching eggs were randomly separated into 4 treatments (each treatment represented with three replicates). The experimental groups were arranged as follows, the 1st group (T1) used as positive control (which eggs were fumigated with formaldehyde, the second group (T2) was sprayed with distilled water as a negative control, third group (T3) was sprayed with garlic oil solution 2ml/litter and the fourth group (T4) sprayed garlic oil solution 3 ml/litter. Results revealed that chick weight, chick shank length, chick body length and hatchability tended to be significantly higher (P<0.05) in eggs treated with garlic oil solutions when compared to control group. Embryonic mortality and egg weight loss ratio during 18 days of incubation were considerably (P0.05) lower in eggs sprayed with garlic oil solutions as compared with control group. Blood haematological parameters (RBCs, Hb, and WBC) were unaffected at hatch and at 28 days, with the exception of a modest rise in WBC count at 28 th day in response to spraying with garlic oil solution. In response to spraying garlic oil solutions, carcass contents of chicks at hatch and growth performance (body weight, feed intake, and body weight gain) of chicks during the experimental period (28 days showed significantly higher values and feed conversion improvement, while the residual yolk of chicks at hatch, , was lower than those in the control group. Comparing to control groups, garlic oil application had a substantial impact on TAOC at hatch and after 4 weeks of age. Cholesterol, triglyceride, plasma total protein, albumin, LDL and HDL were significantly differed (p<0.05). We concluded that pre-incubation spraying of eggs with garlic oil solution as a natural disinfectant is an effective way to improve hatchability, post-hatch chick development, and physiological response of hatched Sinai chicks.
An experiment was designed on 165 local Sinai laying hens (150 females + 15 males), 47 wk-old, were equally divided into five dietary treatments to determine possible benefits from dietary supplementation with proanthocyanidins to the layer's diet of grape pomace and green tea extracts (GPGT extract) at levels (0, 50, 100, 150 and 200 mg/kg diet) on productive and reproductive performance during the laying period from 47 to 62 wk of age. Results illustrated that egg number/hen or laying rate (%) significantly (P≤0.05) improved due to feeding the diet supplemented with 150 mg GPGT extract/ kg diet as compared to the control group. Also, the hens fed diet supplemented with 150 mg GPGT extract recorded the highest value of egg mass when comparing with the control and other dietary treatments. Fertility % of eggs from hens fed diet supplemented with 100 and 200 mg GPGT extract / kg diet was significantly (P≤0.05) increased compared to the low level of extraction (50 mg/ kg diet) and control diet. The diet supplemented with 100 mg GPGT extract / kg diet had higher hatchability % and chick weight than the control diet. In addition, total antioxidant capacity yolk content in was significantly increased as a result of feeding on diet with 150 mg GPGT extract/ kg diet compared to the control diet. It could be concluded that supplementation 150 mg GPGT extract / kg diet in Sinai hen's diets can be used to maximize the egg production performance, quality of egg yolk and economic efficiency from 47 to 62 wk of age. Moreover, these results suggest that 100 mg GPGT extract/ kg layer diet can be applied for optimal performance of reproductive traits.
This research was done to find out the effect of in ovo injection of Coenzyme Q10 (CoQ10) at various incubation ages on the physiological and immunity performance of Mamora chickens. A total of 630 hatching eggs were divided into 7 equal treatments (90 eggs per each). The first group was as a negative control, the second group was as a positive control (injected in air sac with 0.3 ml/egg of distilled water at day 1 of incubation), the third and fourth groups were injected with 0.3 ml/egg of distilled water contained 0.1 and 0.2 ml coenzyme Q10 / egg respectively at day1 of incubation, the fifth group was as a second positive control (injected in air sac with 0.3 ml/egg of distilled water at day18), the six and seven groups were injected with 0.3 mL/egg solution of sterile distilled water contained 0.1 and 0.2 mL coenzyme Q10 / egg, respectively at day18 of incubation, Hatched chicks of each treatment were reared till 28 days of age.Results obtained could be summarized as follow: improving the hatchability percentage and decreasing embryonic mortality by in ovo CoQ10 at the 1st and the 18th day of incubation period as compared with negative control group. In ovo injection with CoQ10 led to improve the subsequent growth traits after hatch within the period of 1-28 day of age. Lymphocytes (L, %) was elevated, while heterophils (H, %) was decreased for chicks hatched from eggs injected with 0.2 ml CoQ10 / egg at the 1st day of incubation. All chicks produced from injected eggs with CoQ10 had higher serum catalase enzyme value and lower liver enzymes (AST & ALT) compared with those of negative or positive control. Therefore, in ovo CoQ10 (0.1 or 0.2 ml/egg) injection improve hatchability, post-hatch chick development, and physiological response of hatched Mamora.
ABSTRAT: A total number of 180 Sinai laying hens at 25 weeksold were used, weighed and divided into six treatments of three replicates each and housed in individual layer cages to investigate the effect of using two levels of energy (2760 or 2660 Kcal/Kg diet) and synthetic (s) or natural source (n) of Coenzyme Q10 (CoQ10) at levels of (0, 7.5 mg/kg diet CoQ10(s) or 7.5 mg/kg diet CoQ10 (n) ) in 2x3 factorial design on the productive performance, profile fatty acids in egg yolk, nutrients digestibility and economical efficiency of local laying hens. Resulted obtained could be summarized in the following:1-Egg weight of hens fed diet contained low ME significantly increased (P≤0.05) as compared to control diet. While, no significant influence (P≥0.05) of dietary CoQ10 and interaction between CoQ10 and ME on egg weight. 2-Egg production % and egg mass for hens with low ME was significantly (P≤0.05) higher than hens fed diet with the control diet. 3-Hens fed 7.5 mg CoQ10(s) had significantly higher (P≤0.05) egg mass by about 5.76% than CoQ10 (o) (control diet). The best egg mass was recorded by the interaction between 2660 Kcal / Kg and 7.5 mg CoQ10(s). 4-Feed intake was increased by about 7.49% for hens fed the low level of ME (2760Kcal/Kg) as compared the control diet. While, the diet with CoQ10(s) was the highest amount of feed intake comparing with CoQ10 (n). 5-Feed conversion was improved by 6.20% for hens fed diets with 2660 Kcal /Kg compared to 2760 Kcal /Kg. But, no significant influence of dietary CoQ10 and interaction between CoQ10 and ME on feed conversion ratio. 6-The dietary supplemented with CoQ10(s) and the interaction between dietary CoQ10(s) or (n) + the low level of ME resulted in a significant increase (P≤0.05) in shell thickness compared to the control diet. 7-The diet contained low level of ME caused a significant decrease (P≤0.05) in heterophil (H) % and heterophil / lymphocyte (L) compared to the control diet. 8-The percentage of C18:2ω6 and C18:2ω3 with7.5 mg/Kg CoQ10 (n) is significantly higher (P≤0.05) than those of the control diet. On the other hand the percentages of C20:4ω6 was significantly reduced (P≤0.05) in response to the diet contained with7.5 mg/Kg CoQ10(s) comparing with the control and CoQ10 (n).M.M. Beshara et al. 178The interaction between 2760 or 2660 Kcal/Kg diet and 7.5 mg/Kg CoQ10 (n) recorded the best percentage of C18:2ω6 and C18:2ω3 as compared to control and other groups. While, the diet contained ME 2760 Kcal/Kg diet+ 7.5 mg/Kg CoQ10 (s) recorded significantly the lowest (P≤0.05) value of C20:4ω6 compared to the control diet.9-Generally SFA (C14:0, C16:0 and C18:0) were decreased in response to the low dietary ME, Co Q10 and by the interaction between ME and CoQ10 compare to the control diet. 10-The percentage of C18:1ω9, C16:1ω9 and C18:1ω7 of yolks from diet supplemented with 7.5mg CoQ10(s) /Kg diet were significantly higher (P≤0.05) than the control diet. The interaction between low ME and 7.5 mg CoQ10 (n) had the highest value of C18:1ω9 by about 13.15% comparing...
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