اثرات مكمل سازي دانه زيره سياه بر عملكرد، كلسترول تخم مرغ، وزن تخم مرغ، كيفيت پوسته و سيستم ايمني در مرغ هاي تخم گذار

چكيده انگليسي :

Effects of Black Cumin Seed Supplementation on Performance Egg Cholesterol Egg Weight Shell Quality and Immune System Laying Hens Seyed Jalal Boka Jalal boka@ yahoo com Date of Submission January 30 2012 Department of animal science Isfahan university of Technology Isfahan 84156 83111 IranDegree M Sc Language FarsiAbdolhosein samie E mail asamie48@cc iut ac irAbstractAntibiotics have been used for years to promote the profitability of poultry production There isincreasing pressure to reduce or eliminate the use of antibiotics in poultry feed because of thenegative human health issue of antibiotic resistance Recently feed additives of plant origin such asessential oils or extracts of aromatic plants have received considerable attention as alternatives tothe traditional antibacterial feed additives Antibacterial feed additives such as antibiotics have beenused for years to improve the profitability of poultry production by helping to control pathogenbacteria in the gut mucosa thereby improving weight gain feed conversion ratio FCR anduniformity However there is a potential development of resistance by several pathogenic bacteriawhen antibiotics are used in the animal diets Therefore the feed industry will have to researchalternatives for the antibiotics One of the alternatives used as feed additives is black cumin Blackcumin Nigella sativa L is also known as black seed and grows in Asian and Mediterraneancountries Black cumin seeds have antioxidant activity antibacterial This study was conducted todetermine the effect of feeding black cumin on performance egg quality cholesterol content yolkegg biochemical parameters Escherichia coli count intestinal morphology and immune system Inthis experiment total of one hundred 49 wk old laying hens Hyline 32 were randomly assignedto 4 treatments with 5 replicates of 5 birds each Experimental diets were as following control 1 2 and 3 black cumin Feed consumption and feed conversion ratio were measured biweekly duringthe 70 days experiment Data on feed intake and egg mass were used to calculate feed conversionratio Feeding black cumin had no effect on period1 2 and3 but Decrease feed intake on period 4 5 and whole period Adding black cumin improved egg mass feed conversion ratio egg shellquality and internal egg quality parameters Black cumin had no effect on Antibody titer againstSRBC at 35d but significantly increased 70d p 0 01 Feeding black cumin improved triglyceride cholesterol and HDL The result of this study shows that use of black cumin in laying hens dietsincrease villi length and decrease crypt depth Also black cumin promotes villi length to crypt depthratio Moreover goblets cell count increased in hen fed with black cumin 3 black cuminspecifically In addition use of black cumin decreased significantly Escherichia coli count in gutlaying hens p 0 05 The use of black cumin increased significantly relative weight pancreas p 0 05 The result of this study showed that different levels of black cumin had no effect on eggproduction egg weight relative weight liver spleen and egg cholesterol content In general resultsof the study showed that black cumin supplementation to the laying hen diet have positive effects onperformance intestinal morphology Escherichia coli count biochemical parameters and immunesystem Key words Antibiotic antioxidant black cumin hen egg immune system

بكا، جلال

اثرات مكمل سازي دانه زيره سياه بر عملكرد، كلسترول تخم مرغ، وزن تخم مرغ، كيفيت پوسته و سيستم ايمني در مرغ هاي تخم گذار