Mansoura University, Faculty of AgricultureJournal of Animal and Poultry Production2090-36427520160501Evaluation of Complete Substituion of Sieving Wastes of the Egyptian Clover's Seeds Instead of Soybean Meal and Maize in Rabbit's Diet تقييم إحلال مُخلفات غربلة بذور البرسيم المصرى محل مسحوق فول الصويا والذرة فى عليقة الأرانب1531624854410.21608/jappmu.2016.48544ENعبد الحميد محمدعبد الحميدقسم إنتاج الحيوان، کلية الزراعة، جامعة المنصورة، المنصورة، ج.م.ع.رحاب فوزى صدیق عبد الفتاحإسماعيلقسم إنتاج الحيوان، کلية الزراعة، جامعة المنصورة، المنصورة، ج.م.ع.محمد محمدصالحقسم إنتاج الحيوان، کلية الزراعة، جامعة المنصورة، المنصورة، ج.م.ع.Journal Article20190919فى تجربة غذائية على الأرانب لمدة 60 يوما، تم إحلال بروتين مسحوق مخلفات غربلة بذور البرسيم المصرى محل بروتين مسحوق کل من کسب فول الصويا والذرة الصفراء فى علائق الأرانب التجريبية مقارنة بالأرانب الکونترول (المحتوية على بروتين مسحوق کل من کسب فول الصويا والذرة الصفراء). تم تقييم الملاحظات العامة على الأرانب وأدائها فى النمو والاستفادة الغذائية والکفاءة الاقتصادية واختبار الذبح والتحليل الکيماوى للحوم الذبائح وصورة الدم. وخلُصت النتائج الى تفوق العليقة التجريبية على العليقة المقارنة فى کل القياسات محل الدراسة، ومن ثم نستخلص من هذه الدراسة إمکانية استخدام هذا الإحلال الناجح والاقتصادى متى توافرت هذه المخلفات لرخص سعرها وتأثيراتها الإيجابية على صحة وإنتاج وتصافى وترکيب الجسم واقتصادية الإنتاج للأرانب.Mansoura University, Faculty of AgricultureJournal of Animal and Poultry Production2090-36427520160501Effect of Copper Supplementation with Different Energy Levels on Broilers: (A) - Productive Performance1631714854510.21608/jappmu.2016.48545ENS. Z.El-DamrawyAnimal Production Department, Faculty of Agriculture, Tanta University, Egypt.Y. A.MarieyAnimal Production Research Institute, Agricultural Researches Center, Egypt.M. A.El-KatouryAnimal Production Department, Faculty of Agriculture, Tanta University, Egypt.Journal Article20190919An experiment was conducted to determine the effect of dietary supplementation of two Cu sources: inorganic (copper sulfate) and organic (copper yeast) with different levels of metabolizable energy on productive performance of broiler chickens. Three dietary metabolizable energy levels were used in starter period from 1 to 28 days old (2900, 2800 and 3000 kcal/kg); the corresponding values in finisher period (29 to 42 days old) were 3000, 2900 and 3100 kcal/kg, respectively. One-day-old Cobb broiler chicks were randomly assigned into nine experimental groups, each with three replicate groups. Diets containing 2900 and 3000 kcal ME were used as controls for the starter and finisher periods, respectively. In the starter diets (2800 and 3000 kcal ME/kg) Cu was supplemented at 50 and 100 mg/kg as copper yeast and at 50 and 100 mg/kg as copper sulfate. In the finisher diets (2900 and 3100 kcal ME/kg) the same sources and levels of Cu were added. During the whole experimental period, dietary supplementation with organic and inorganic copper caused a significant increase in LBW of birds compared with their controls. Birds fed the high ME diets plus Cu yeast consumed significantly less feed compared with the control group, but chicks fed the low ME diets plus copper consumed approximately similar amounts of feed compared with the control. Birds fed the high ME diets plus organic or inorganic copper displayed significantly better FCR than the control. Dietary Cu supplementation had no significant effect on carcass yield of broilers, expect those fed the high ME diet plus 100 ppm Cu yeast which exhibited significantly higher carcass yield compared with their control group. Birds fed the low ME diets plus 50 ppm Cu yeast or 100 ppm CuSO4 and those fed the high ME diets plus 100 ppm Cu yeast and those given diets plus 50 or 100 ppm CuSO4 displayed significantly higher total edible parts compared with the control group. Broiler fed diets containing the high ME diets supplemented with 50 or 100 mg/kg organic copper had higher means of net revenue and economic efficiency compared with the control birds. It can be concluded that birds fed the high ME diets plus 100 ppm organic copper can improve productive performance of broilers.Mansoura University, Faculty of AgricultureJournal of Animal and Poultry Production2090-36427520160501The Use of Quinoa Seeds Extract as a Natural Antioxidant in Broilers’ Diets and its Effect on Chickens’ Performance and Meat Quality1731804869610.21608/jappmu.2016.48696ENM. M. T.EasssawyRegional Center For Food And Feed – Agricultural Research Center – Giza - EgyptM. A.Abdel-MoneimRegional Center For Food And Feed – Agricultural Research Center – Giza - EgyptGhadir A.El-ChaghabyRegional Center For Food And Feed – Agricultural Research Center – Giza - EgyptJournal Article20190921The present experiment was conducted to evaluate the effect of dietary inclusion of quinoa seeds extract (QSE) as a natural antioxidant on broiler chicken performance, economical efficiency, meat quality and oxidative parameters of chickens’ meat under refrigerated storage conditions. The extract was prepared and subjected to different analysis prior to use in broiler diets. A total number of 135 one-day old chickens of Ross strain were randomly allotted to three dietary treatments and each treatment contained 45 birds of 3 replicates each. The control group was fed a basal diet without supplementation while QSE was supplemented at a rate of 10 and 30 g/100 Kg diet to compose the other two experimental diets (T1 and T2), respectively. The results showed that QSE contains several phytochemical compounds with potential antioxidant activity. Those results were further confirmed by determining the total antioxidant capacity, total phenolic content and the radical scavenging activity of the extract. The dietary inclusion of QSE in broilers’ diet showed that group T2 had significantly (p<0.05) higher body weight, weight gain and feed intake compared to T1 and control group. The proximate analysis results of chickens’ meat showed that breast and thigh meat of the chickens in treatment T2 recorded significantly (p<0.05) higher protein content as compared to the other two groups. Regarding the antioxidant properties, the addition of quinoa seeds extract in broilers’ diet resulted in a significant (p<0.05) improvement of the antioxidative properties of chicken meat. The oxidative stability of chicken meat under refrigerated storage conditions was evaluated at different storage days (1, 4 and 7) and it was shown that the dietary addition of QSE into broilers’ diet succeeded in delaying the lipid oxidation of broilers’ meat up to 7 days of refrigerated storage. The chicken meat of groups T1 and T2 showed no significant (p>0.05) reduction in their free radical scavenging activities at day 7 of storage compared to control group. From the present study, it can be concluded that the dietary inclusion of quinoa seeds extract in broilers’ diet as a natural antioxidant have a positive effect on broilers performance, meat quality and also improved the chicken meat oxidative stability during refrigerated storage up to 7 days.Mansoura University, Faculty of AgricultureJournal of Animal and Poultry Production2090-36427520160501Estimation of Genetic and Phenotypic Parameters for Some Milk Traits on Egyptian, Friesian and their Crosses Cows1811844869710.21608/jappmu.2016.48697ENK. HusseinAnimal Production Research Institute, Agriculture, Cairo, EgyptAnas A. A.BadrAnimal Production Research Institute, Agriculture, Cairo, EgyptShimma M.El-KomeyAnimal Production Department, Faculty of Agriculture, Tanta University, Egypt.Journal Article20190921A total of 1561, 575 and 2337 normal lactation records of Baladi, Friesian and their crosses cows respectively were used in the present study. The three genetic groups belonged toELGemeza farme Animal Production Research, institute, Ministry of Agriculture, during the period from 1975 to 2011. Trait studied are 305 day milk yield (305 d MY) and lactation period (LP). Data were analyzed by using Multi Trait Animal model (MTAM). The model includes the fixed effects of month and year of calving and parity and the random effects of animal, permanent environmental and errors. Average 305 d MY was 1160, 2098 and 1695 kg, for Baladi, Friesian and crossing, respectively. Mean of LP was 210, 272 and 248 d, for the three groups, respectively. Month and year of calving and parity had highly significant effect on 305 d MY and LP. Heritability estimates for 305 d MY ranged from 0.06 to 0.39 for the three groups and LP ranged from 0.05 to 0.28. Genetic correlation among two traits ranged from 0.40 to 0.96<strong>, </strong>while phenotypic correlation ranged from 0.50 to 0.70.Mansoura University, Faculty of AgricultureJournal of Animal and Poultry Production2090-36427520160501Laying Performance and Egg Quality Traits in White and Brown Commercial Hens1851894869910.21608/jappmu.2016.48699ENSaadeya S.MekkyDesert Research Center, Ministry of Agriculture, EgyptA. GalalDepartment of Poultry Production, Faculty of Agriculture, Ain Shams University, EgyptH. I.ZakyDesert Research Center, Ministry of Agriculture, EgyptA. Zein El-DeinDepartment of Poultry Production, Faculty of Agriculture, Ain Shams University, EgyptJournal Article20190921The current study aimed to assess egg production traits and egg quality measurements of brown eggs as compared to white ones for two commercial layer strains under Egyptian environmental conditions. Hy-line brown and Hy-line W-36 layer strains were used in this study. During the first 90 days from the onset of egg production. 663 laying hens were used in this experiment to determine egg production characteristics (447 brown Hy-line layers and 216 W-36 Hy-line layers). Results indicated that Brown Hy-line layers had significantly heavier body weight than the white ones. Concerning some body measurements brown Hy-line layers had highly significant shank length compared to the white ones. However, W-36 Hy-line layers had highly significant comb length and wattle length compared to brown hens. Regarding egg production traits, the brown layers reached to sexual maturity earlier than the white ones. The brown layers produced significantly heavier egg weight than W-36 Hy-line layers. Furthermore, the brown layers produced significantly higher egg mass than the white counterpart. However, strain had no significant effect on egg number and egg production mean. Concerning external egg quality, brown eggs recorded higher egg shape index, shell thickness compared to white eggs. Regarding internal egg quality, it could be noticed that the brown eggs had higher albumen percentage and yolk index compared to those estimated by white eggs. However, the white eggs had higher Haugh units and yolk percentage than the brown eggs. It can be concluded that brown Hy-line layers had higher body weight, egg weight, egg mass, yolk index, albumen percentage and shell thickness compared to white ones. However, white eggs recorded higher Haugh units and yolk percentage than brown eggs. Mansoura University, Faculty of AgricultureJournal of Animal and Poultry Production2090-36427520160501In vitro Maturation of Rabbit Oocytes as Affected by Donor Age and Type of Serum From Mated Does in Maturation Medium1911964870010.21608/jappmu.2016.48700ENM. A.El-HarairyAnim. Prod. Dept., Fac. Agric., Mansoura Univ., Egypt.Sh. M.ShamiahBiotech. Dept., Anim. Prod. Res. Instit. Agric. Res. Center, Egypt.Fakhry M.FakhryAnim. Prod. Dept., Fac. Agric., Mansoura Univ., Egypt.Journal Article20190921This study was designed to examine the effect of the age of rabbit and addition of serum at different reproductive status (pre-, at and post-mating doe serum) in maturation medium (TCM-199) as compared as hormonal addition (10 IU eCG and 20 IU hCG/ml) on <em>in vitro</em> maturation of rabbit oocytes. Results show that frequency distribution of oocytes at MII stage was higher (P<0.05) for oocytes recovered from old (59.58%) than young (51.69%) rabbits. Frequency distribution of oocytes at MI stage showed an opposite trend, being significantly (P<0.05) lower for oocytes recovered from old (9.58%) than the small (14.89%). Frequency distribution of oocytes at MII was the highest (62.11%, P<0.05) for oocytes <em>in vitro</em> maturated in maturation medium supplemented with post-mating serum, but did not differ significantly from those <em>in vitro</em> matured in media supplemented with hormones (57.54%) or pre-mating serum (55.87%), while oocytes matured with mating serum showed significantly the lowest values (46.78%). Frequency distribution of oocytes at MI stage showed an opposite trend to that at MII. The interaction between age of oocyte donors and type of serum was not significant on frequency distribution of oocytes at all maturation stages. Such effect was reflected in higher maturation rat (oocyte at MII) for oocytes matured with Post-mating serum for young or old doners, but <em>in vitro</em> maturation rate was the highest (67.5%) for oocytes recovered from older doners and <em>in vitro</em> matured in medium supplemented with post-mating serum. Results of the current study revealed that the highest percentage of oocytes at metaphase-II (matured oocytes) and the lowest percentage of degenerated oocytes were obtained when rabbit oocytes were recovered at older ages and cultured in TCM-199 supplemented with serum from post-mating doe serum or hormones (eCG and hCG).