Yazar "Akyildiz, Serhat" seçeneğine göre listele

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    APPLICATION OF PLANT EXTRACTS AS FEED ADDITIVES IN POULTRY NUTRITION
    (Univ Agricultural Sciences & Veterinary Medicine Bucharest, 2016) Akyildiz, Serhat; Denli, Muzaffer
    Various kinds of antibiotics have been used extensively as growth promoters in animal feeds for a large number of years, especially in the fields of poultry production. As a result of the decision to ban of the antibiotics in livestock production researches on plant extracts as alternatives to the use of growth promoters (antibiotics) has significantly increased. Many novel natural candidate replacements including probiotics, prebiotics, organic acids and plant extracts and essential oils have been applied to maintain good production. Recently, herb and plant extracts have been received a great attention to be fed to poultry as feed additives to improve and increase production. The most commonly studied plants to be used in animal nutrition are cinnamon, oregano, cumin, garlic, sumac, cloves, anise, mint, coriander and ginger. Researchers have shown that these extracts are the powerful stimulators of the immune and animal digestive systems as well as highly beneficial effects in poultry nutrition due to their antioxidant, antimicrobial, antiviral, anticoccidial and anthelmintic properties. The aim of this review is to provide an overview of the recent knowledge on the use of plant extracts in poultry feeds as feed additives and their effects on the poultry performance.
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    EFFECTS OF DIETARY ADDITION OF CHLOROGENIC SUBSTANCES ON GROWTH PERFORMANCE, INTESTINAL MICROFLORA POPULATION AND SERUM BIOCHEMISTRY IN BROILERS
    (Univ Agricultural Sciences & Veterinary Medicine Bucharest, 2016) Denli, Muzaffer; Akyildiz, Serhat; Alp, Simten Yesilmen; Cardozo, Paul W.
    The aim of this study was to evaluate dietary effects of chlorogenic substances (Igusafe) on growth performance, intestinal microflora population and serum biochemistry in broilers. A total of 144 Ross 308 one-day-old male broiler chicks were randomly allocated to 3 treatment groups consisting of 8 replications of 6 chicks per pen for 42 days. There treatments were used: chicks were fed by basal diet as control group, basal diet plus 80 mg Igusafe/kg diet, and basal diet and 160 mg Igusafe/kg diet. Results showed that the addition of 80 mg Igusafe to the diet resulted in significantly higher body weight gains and lower aspartate amino transferase (AST) and serum total protein (TP) concentrations compared with control group (P < 0.05). Intestinal tract weight was also significantly higher in the group fed 160 mg Igusafe/kg diet (P < 0.05). Supplementing both levels of Igusafe significantly reduced Escherichia coli count (P < 0.05). There were no treatments effects on carcass yield, liver weight and Lactic acid bacteria population (P > 0.05). In conclusion, our results indicated that supplementation of Igusafe may be useful as enhancer of growth performance by reducing Escherichia coli count with a positive trend to decrease the broilers mortality.
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    EFFICACY OF HERBAL EXTRACTS ON GROWTH PERFORMANCE, SERUM BIOCHEMISTRY AND INTESTINAL SELECTED BACTERIAL POPULATION IN BROILERS
    (Univ Agricultural Sciences & Veterinary Medicine Bucharest, 2017) Akyildiz, Serhat; Ozcan, Nida; Denli, Muzaffer
    This study was conducted to evaluate the effects of two herbal extracts (Emerald and Gundelia tournefortii L. Seed) on growth performance, serum biochemistry and intestinal bacterial population in broilers. A total of 280 Ross 308 1-day-old male broiler chicks were distributed into 5 groups of 7 in each consisting 8 replicates per treatment for 42 days. Five treatments were used; control group received basal diet (without any herbal extract supplementation), the Emerald at 100 mg/kg diet and G. tournefortii L. seed extracts (GTE) at 2, 4 and 8 g/kg diet were added to basal diet. The addition of 4 and 8 g GTE to the diet resulted in significantly higher body weight compared with control group (P<0.05). Moreover, supplementing the highest level of GTE (8 g/kg diet) significantly increased intestinal lactic acid bacteria counts (P<0.05). However, no differences were observed among treatments for feed intake and feed conversion rate at the end of the study (P>0.05). In addition, serum uric acid (UA) and glucose (Glu) concentrations and aspartate amino transferase (AST) and alkaline phosphatase (ALP) activities were not affected by any treatment (P>0.05). In conclusion, our results showed that different dietary levels of GTE may improve the growth performance by increasing intestinal lactic acid bacteria counts.