3587

3390

كارشناسي ارشد

علوم دامي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي

1385

يازده، 95، [II] ص.: مصور، جدول، نمودار

ص. ع. به فارسي و انگليسي

عبدالحسين سميع، جواد پور رضا

مهدي محمدعلي پور

24/4/86

نفيسه نيلي، خورشيد رزمجو

1396/02/30

كتابنامه

كشاورزي

مهندسي كشاورزي

ID3390

به فارسي و انگليسي: قابل رويت در نسخه ديجيتال

The effect of Beta glucanase and Virginiamycin in barley based diets on performance and nutrient digestibility of broilersAbstract In order to determine the effects of beta glucanase and virginiamycin in barley basedbroiler diets on performance and digestibility of nutrients an experiment wasconducted using 720 Ross broiler chicks Barley was substituted for corn at levels of0 25 50 and 75 Antibiotic and beta glucanase were used at levels of 30 grams and1000 grams of diet respectively Each experimental diet was fed to three replicates ofbirds 15 birds per replicate Experimental period lasted 6 weeks The experimentwas carried out in a completely randomized design in a 4 2 2 factorial arrangement Weight gain feed consumption and feed conversion ratio were determined at the endof each period of experiment In addition the digestibility of nutrients and digestibleenergy DE of whole diets were measured by ileal collection method Increasingdietary barley reduced body weight gain significantly p 0 05 Enzyme andantibiotic supplementation improved body weight gain significantly p 0 05 At theend of the experiment the feed intake was lowest for diet contained 75 barley thehighest feed intake belonged to diet contained 50 barley and enzyme p 0 05 Feedconversation ratio was increased significantly by increasing dietary barley p 0 05 FCR was improved by antibiotic and enzyme supplementation p 0 05 Antibioticssupplementation had a significant effect on intestine weight Increasing dietary barleyreduced abdominal fat p 0 05 No significant difference was seen by increasingbarley level on carcass weight however due to antibiotic consumption a considerableincrease was seen on the carcass weight p 0 05 It seems that by increasing dietarybarley protein digestibility was decreased p 0 05 Enzyme caused an increase inprotein digestibility p 0 05 Results showed that digestibility of fat increased byusing enzyme p 0 05 Increasing barley reduced DE p 0 05 but using enzyme orantibiotic had significant difference on the DE p 0 05 Overall results showed thataddition of enzyme to the diets contained 50 and 75 barley had significant effectscompared with another levels of barley Enzyme and virginiamycin together in rationswith high barley percentage had better effects on broilers performance Finally resultsshowed that barley is a good and appropriate substitution for corn when enzyme andvirginiamycin were used

عبدالحسين سميع، جواد پور رضا

مهدي محمدعلي پور

نفيسه نيلي، خورشيد رزمجو