@article { author = {Ibrahim, Samya}, title = {EFFECT OF DIETARY HUMIC ACID SUPPLEMENTATION ON EGG PRODUCTION, EGG QUALITY AND FERTILITY OF TURKEY HENS.}, journal = {Journal of Animal and Poultry Production}, volume = {7}, number = {2}, pages = {59-65}, year = {2016}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3642}, eissn = {2090-3723}, doi = {10.21608/jappmu.2016.48284}, abstract = {This study was conducted to evaluate the effects of dietary supplementation of humic acid (HA) on reproductive performance, egg production, some blood parameters and carcass traits of turkey hens. A total of 160 turkey hens from White Holland strain were employed in a completely randomized block design with one control group and three treatment groups. Each group was divided into four replicates (10 hens in each). Diets of the 1st, 2nd, 3rd and 4th groups were supplemented with 0, 200, 300 and 400 mg HA/kg diet, respectively. Results showed that all HA levels increased (P<0.05) live body weight, feed conversion, egg production and egg quality in terms of increasing (P<0.05) egg yolk index, Haugh units and shell thickness, while albumen, yolk and shell percentages, shape index and yolk color score of eggs were not affected by HA. Fertility and hatchability rates were improved (P<0.05) by all HA levels. Count of red and white blood cells in whole blood and albumin concentration in blood plasma increased (P<0.05) by all HA levels as compared to control, being the highest for HA at a level of 300 mg/kg at all age intervals. Activity of AST and ALT and concentration of thyroid hormone (T3) in blood plasma were not affected by HA. Carcass traits showed in terms of weight of carcass, liver, gizzard, spleen and oviducts relative to live body weight were the highest (P<0.05) in hens fed HA diets at levels of 300 and 400 mg/kg diet. Based on the obtained results, it could be concluded that dietary humic acid supplementation in turkey diet markedly improved reproductive performance, egg quality and carcass traits without adverse effects on healthy status of laying hens.}, keywords = {}, url = {https://jappmu.journals.ekb.eg/article_48284.html}, eprint = {https://jappmu.journals.ekb.eg/article_48284_0edbf514fecc2fb8fd6cc0a89a841bb7.pdf} } @article { author = {Gouda., A. and Tolan, A. and El -Ekiaby, W.}, title = {STUDIES ON SUBSTITUTING GRADED LEVELS OF FERMENTED FISH BYPRODUCTS ON GROWTH PERFORMANCE AND HEALTH STATUS OF NILE TILAPIA FINGERLINGS.}, journal = {Journal of Animal and Poultry Production}, volume = {7}, number = {2}, pages = {67-75}, year = {2016}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3642}, eissn = {2090-3723}, doi = {10.21608/jappmu.2016.48287}, abstract = {This study aimed to evaluate replacing fish meal with graded levels of silage made from fish by-products to feed monosex males of Nile tilapia (Oreochromis niloticus). Three diets were formulated in which fish meal was replaced by fish silage (0,25,50,75, and 100%). Diets were fed to experimental groups of tilapia for 120 days. The highest total weight gain TWG (49.93 g) was recorded for fish fed the control diet (SFB0) followed by those fed the diet SFB25% (44.01g/fish), SFB50% (43.08g/fish), SFB75% (38.65g/fish) and SFB100% (36.38g/fish), respectively and the differences in weight gain among the different fingerling groups were significant (P>0.05). Moreover, the same observation was noticed for specific growth rate SGR. In addition to that, the average feed intake and feed conversion ratio and protein efficiency ratio of Nile tilapia were significantly (P<0.05) affected by the incorporation of fermented fish meal as a substitute of fish meal. The carcass composition parameters of body composition was significantly altered while no significant differences were found among all studied groups concerning the moisture content. Replacing up to 75% of FM by SFB neither affected growth performance nor health state of tilapia but, economically decreased costs of production. Even though replacing up to (100%) was economically favored and gave good growth performance but it was a source of parastic infestation adversely affecting the health condition of tilapia and was cosmopolitan rendering fish esthetically unaccepted for human consumption.}, keywords = {}, url = {https://jappmu.journals.ekb.eg/article_48287.html}, eprint = {https://jappmu.journals.ekb.eg/article_48287_a56e8abdf22fa6bb5d0805af241f731b.pdf} }