Mansoura University, Faculty of AgricultureJournal of Animal and Poultry Production2090-364291120181101Effect of Supplementation Dry Yeast or Bentonite and their Combination as Feed Additives on Productive Performance of Lactating Buffalos.4234314115510.21608/jappmu.2018.41155ENA. H.GhoniemAnimal Production Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt.E. A.El – BltagyAnimal Production Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt.A. A.AbdouAnimal Production Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt.Journal Article20190716
The objective of this experiment was to investigate the influence of addition active dry yeast, bentonite or their mixture to lactating buffalos' rations on digestibility, milk yield, milk constituents, some blood metabolites, feed efficiency and economic efficiency. Eight lactating buffalos were used in double 4×4 Latin square design where their live body weight was (612.5±41.19 kg on average) and previous milk yield recorded (8.92±0.47 kg/day on average). Animals were fed individually according to Kearl requirements (1982) requirements, as follows: 40% of their energy requirement as total digestible nutrients (TDN) was covered from concentrate feed mixture (CFM), while the other 60% of energy requirement was covered from Egyptian berseem (Br), with an extra amount of rice straw (RS) was offered at 0.5% of animal's body weight T1 (control ration), while the tested rations were included the control ration plus 10 g/h/d yeast (T2) or 20g bentonite /kg DM intake (T3) or the combination of the two additives (T4). Results showed that positive significant effects respecting most nutrient digestibilities for all supplemented rations based on those control ration, being the better values were mostly occurred with T4. The feeding values as TDN was significantly (p<0.05) increased with supplemented rations compared with that of control one. Similar trend between experimental rations regarding DCP values were observed with the best value was also associated with (T4). The average daily actual milk yield (AMY) was significantly higher (p<0.05) when animals fed the supplemented rations (T2, T3 and T4) in comparison with those fed the free from additives ration (T1). The fat corrected milk (7% - FCM) was behaved the same trend of (AMY), but there were no significant differences among the experimental rations. There were no significant differences between the experimental diets regarding milk composition. The total dry matter intake and TDN intake showed no significant differences among the experimental rations, while, the values of DCP intake was significantly (P< 0.05) better when animals fed T4 ration than those fed the control one. There were no significant differences among experimental rations regarding the measured blood metabolites. The best economic efficiency was occurred with T3 and T4 rations. Generally, from the obtained results, it could be concluded that supplementation of dry yeast or bentonite or both of them to rations of lactating buffaloes had, favorability significant effects on digestibility, feeding value, milk production and composition and economic efficiency.Mansoura University, Faculty of AgricultureJournal of Animal and Poultry Production2090-364291120181101Relationship between Selection for Humoral Immune Response and Productive and Reproductive Traits in Fayoumi Male of Chicken4334374115710.21608/jappmu.2018.41157ENNahla AEl-RAZIKAnimal production Research Institute , ARC, Dokki , Giza , EgyptA. M.RizkAnimal production Research Institute , ARC, Dokki , Giza , EgyptH. A.AbdellatifAnimal production Research Institute , ARC, Dokki , Giza , EgyptM. H.AbdelfatahAnimal production Research Institute , ARC, Dokki , Giza , EgyptJournal Article20190716The present study was conducted to elucidate the relationship between humoral immune response selection and some productive traits in three lines of Fayoumi cocks .A total of 300 male Fayoumi chicks were divided into three lines , control , high and low according to their immune response against SRBC injection . They were fed the formulated diets in adlibitum . Resutts showed that the high line males ND,H9 had significantly higher immune response against NDV and H9 than the other lines . Thyroid hormones concentration in the control and low line were significantly higher than high line . males but non significant effect on T3/T4 ratio between all male lines . The control line had better testosterone hormone level than the high line,while. serum corticosterone hormone concentration was higher in the control and high lines than the low line males . Ejaculate volume ,abnormal sperm percentage and total abnormal sperm / ejaculate did not significantly different between lines studied. the low line in sperm motility (score) was significantly higher than that from the high line. non significantly difference between the low line and the control . Sperm concentration, total sperm /ejaculate and total live sperm / ejaculate were significantly higher in the low and control lines compared by the high line males . Both comb width , and length , wattle width and length did not significantly influenced by Fayoumi – selected lines . Serum total protein , albumin and globulin were significantly improved for the high line followed by the control line while the low line recorded the lowest value . both total cholesterol, triglycerides , ASTand ALT did not significantly influenced by Fayoumi males selected lines . Avrage of immunoglobulins of different lines of Fayoumi males after 10 days from injection of SRBC was significantly higher in the high line males than the other line . It is concluded that the high line males had significantly higher antibody titer against SRBC in terms of higher plasma IgG and IgM compared to males from the control and low line males .Mansoura University, Faculty of AgricultureJournal of Animal and Poultry Production2090-364291120181101Influence of Guar Korma Meal Treated with Acetic Acid on Productive Performance of Dairy Cows4394444115810.21608/jappmu.2018.41158ENH. S.AbbasDepartment of By-products Utilization, Animal Production Research Institute, Agricultural Research Center, Dokki, Giza, EgyptM. H. M.YacoutDepartment of By-products Utilization, Animal Production Research Institute, Agricultural Research Center, Dokki, Giza, EgyptA. A.HassanDepartment of By-products Utilization, Animal Production Research Institute, Agricultural Research Center, Dokki, Giza, Egypt.Journal Article20190716This study was conducted to evaluate the effect of Guar Korma Meal treated with acetic acid (GKMA) on chemical composition, digestibility coefficients, milk yield, degradation kinetics, and some blood parameters of lactating cows,, Guar Korma Meal (GKM) was mixed with 3% acetic acid (v/w), followed by drying at 105<sup>o</sup>C. Treated Guar Korma Meal replaced with untreated GKM in the concentrate feed mixture (CFM) at the rate of 0, 35, 65 and 100% for the tested rations T1, T2, T3 and T4, respectively. Sixteen crossbred Friesian cows in their third or fourth lactation season were used in double 4x4 Latin squares design, whereas 4 cows fed each diet at a period of 28 days (21 as a preliminary period and 7 days as a collecting period)<strong>. </strong>Three rams were consigned for digestibility trials, while other three females with rumen fistula were used for the <em>in situ</em> trials. The obtained results showed that increase GKMA in the experimental rations significantly (P<0.05) increased all nutrients digestibility coefficients, being the highest for T4 (100% GKMA) compared with other experimental rations. Feeding values as TDN and DCP were significantly (P<0.05) higher with increasing GKMA in the experimental rations. Both T3 and T4 (containing 65 and 100% GKMA, respectively) had the highest feeding values, being 66.16 and 66.20% for TDN and 8.10 and 8.23% for DCP, respectively. Average daily milk production as actual or 4% fat corrected milk yield, fat and protein yields, and total solids content were significantly (P<0.05) higher in T3 and T4 than in T1 and T2, being the highest in T4. Average concentration of total VFA, acetic acid and microbial-N yield in rumen liquor significantly (P<0.05) by increasing level of GKMA, being the highest for T4. Concentration of total proteins and their fractions, glucose and urea and AST and ALT activity were at the normal range. Conclusion: Conclusively, it could be recommended that can be used guar korma meal treated with acetic acid in ration formulation of dairy cows at level of 100% as a source of protein which given the best result to highest nutrients digestibility, feeding values, milk production, and feed utilization and economic efficiency.