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Öğe Addition of avilamycin, mannanoligosaccharide and organic acids mixture to corn-soybean meal based broiler diets(2005) Sarica, S.; Erdogan, S.; Koc, A.; Erdogan, Z.This study was conducted to compare the effects of mannanoligosaccharide (MOS) and organic acids mixture (OAM) alone or in combination as alternative feed additives to an antibiotic growth promoter (avilamycin) on the growth performance, some plasma parameters and histological parameters of the small intestine of male broiler chickens. The chicks were randomly assigned to 5 dietary treatments: control, avilamycin, MOS, OAM and MOS plus OAM supplemented diets. The dietary treatments did not significantly influence the body weight gain, feed intake and feed efficiency from 7 to 42 day. No significant effect on some plasma parameters was observed by the dietary treatments. Crypt depths in the duodenum were not influenced by the dietary treatments. However, the depths of the crypts in the jejenum of the treatment groups decreased significantly (P<0.05) compared with control. The depths of the crypts in the ileum were significantly reduced by supplementation of dietary avilamycin, MOS and MOS plus OAM in comparison to the control and diet supplemented with OAM only (P<0.05). It is possible that the level of mannanoligosaccharide and organic acids mixture used in the study was not sufficient to elicit a significant response.Öğe The effects of dietary garlic powder on performance, egg yolk and serum cholesterol concentrations in laying quails(Czech Academy Agricultural Sciences, 2010) Canogullari, S.; Baylan, M.; Erdogan, Z.; Duzguner, V.; Kucukgul, A.This study was conducted to investigate the effects of garlic powder on the performance, egg traits, egg cholesterol and serum parameters of laying Japanese quails. One hundred and twenty 10-weeks-old quails were allocated to four dietary treatments. Quails were caged individually and fed diets supplemented with 0 (control), 1, 2, 4% garlic powder for 12 weeks. There were significant (P < 0.05) differences among the diets in feed consumption, feed efficiency and egg production as averaged over 12 weeks. The better values for these parameters were obtained from the 1% garlic powder supplemented group. Garlic powder addition did not significantly affect egg yolk index, egg shell weight and egg shell thickness. However, there were significant differences (P < 0.05) in egg albumen index, egg shell index and Haugh unit. There was a significant (P < 0.05) reduction in the egg yolk cholesterol concentration when the dietary level of garlic powder was increased from 0 to 4 g/kg. Plasma high density lipoprotein (HDL) cholesterol concentrations increased (P < 0.05) with increasing levels of dietary garlic powder. Plasma cholesterol (P < 0.05) and triglyceride (P < 0.05) concentration decreased with garlic powder supplementation. It was concluded that garlic powder in the diet of laying quails reduced the plasma and egg yolk cholesterol concentration.Öğe Effects of dietary live yeast culture on fattening performance on some blood and rumen fluid parameters in goats(Ecole Nationale Veterinaire Toulouse, 2013) Ozsoy, B.; Yalcin, S.; Erdogan, Z.; Cantekin, Z.; Aksu, T.The objectives of this study were to evaluate the effects of live yeast culture supplementation as a natural feed additive on fattening performance, some blood and rumen fluid parameters in male goats. Totally 48 hybride male goat kids (Saanen x Sami breeds) were divided into one control and three treatment groups each containing 12 kids. Concentrates of groups were formulated as isonitrogenic and isocaloric. Live yeast culture (RumiSacc, Integro Food Industry and Trade Co., Istanbul, Turkey; Live yeast cell: 1.4 x 10(8) cfu per gram) was included in the concentrates at 0 (CON), 1.5 (YC15), 3.0 (YC30) and 4.5% (YC45) on fed basis, respectively. Concentrates were given ad libitum and 100 g per day per animal of lentil straw was given as roughage. Dietary yeast culture at the level of 4.5% increased total weight gain (+15.5% regarding control group). Rumen ammonia-N level was increased with 3 and 4.5% of live yeast culture (+30.9 and +30.5% regarding control group). Ruminal total and individual VFA and blood plasma levels of total protein, albumin, urea nitrogen, total cholesterol, triglyceride and the activities of alanine amino transferase, aspartate amino transferase and gamma-glutamyl transferase were not affected from the dietary treatments. Coliform bacteria count in ruminal fluid and faeces was decreased with yeast culture supplementation. It is concluded that live yeast culture can be included in male goat diets at the level of 4.5% with positively affecting performance.Öğe Effects of dietary supplementation of synbiotics and phytobiotics on performance, caecal coliform population and some oxidant/antioxidant parameters of broilers(Wiley, 2010) Erdogan, Z.; Erdogan, S.; Aslantas, O.; Celik, S.P>The current study was conducted to evaluate the effects of dietary supplementation of synbiotics and phytobiotics on performance, small intestine weight, pH and caecal coliform counts of broilers. The influences of synbiotics and phytobiotics on oxidant/antioxidant status in the blood of broilers were also assessed. A total of 200 broiler chicks were randomly allotted to four dietary treatments, either fed a basal diet or the same diet supplemented with 1 g/kg synbiotic, 1 g/kg phytobiotic or 1 g/kg synbiotic plus 1 g/kg phytobiotic. The diet supplemented with both synbiotic and phytobiotic had no effect on body weight, body weight gain, feed intake and feed efficiency of broilers at the end of the study (p > 0.05). Neither small intestine weight nor pH was affected by any of the treatments. Supplementation of both synbiotic and phytobiotic to diet decreased the caecal coliform count (p < 0.01). Addition of synbiotics and phytobiotics in combination significantly increased plasma malondialdehyde (MDA) levels (p < 0.05), whereasphytobiotic addition alone showed only a slight increase. Similarly, elevated nitric oxide (NO) level was recorded in the synbiotic- and phytobiotic-fed group and in the phytobiotic-fed group (p < 0.001). Superoxide dismutase (SOD) activities did not differ between the groups. In conclusion, dietary supplementation of synbiotic and phytobiotic improved the gut health by decreasing the caecal total coliform count, but growth performance was not affected by the supplementations. Further investigations are needed to determine the effects of phytobiotics on oxidative/antioxidative metabolism as regards their compositional analysis.Öğe The Effects of Licorice (Glycyrrhriza glabra) Root on Performance, Some Serum Parameters and Antioxidant Capacity of Laying Hens(Facta-Fundacio Arnco Ciencia Tecnologia Avicolas, 2018) Dogan, Canogullari S.; Baylan, M.; Erdogan, Z.; Kucukgul, A.; Bulancak, A.The current study was conducted to determine the effects of the licorice root (Glycyrrhriza glabra) in laying hens diets on performance, egg cholesterol, some plasma parameters and antioxidant capacity. One hundred, 40-week old laying hens were divided into four groups, each group consisted of 25 hens and were placed in individual cages. The mean of the initial body weight of laying hens was 1829.18 +/- 9.595 g. Commercial laying hen diet was supplemented with 0, 0.5, 1.0 and 2.0% levels of licorice root powder and four different dietary groups were formed. From the experimental findings, it was ascertained that the licorice root supplementation had no significant effect on egg weight and feed conversion ratio (p>0.05), but feed consumption decreased with increasing licorice root (p<0.05).Egg yield was recorded as 88.94%, 89.56%, 86.82% and 85.02% in the groups of 0, 0.5, 1.0 and 2.0, respectively (p<0.05).Plasma low density lipoprotein (LDL) and egg yolk cholesterol level decreased with the addition of licorice root, while plasma high density lipoprotein (HDL) level was increased with licorice root addition (p<0.05). Licorice root addition had a positive effect on total antioxidant capacity (TAS) of plasma. It was determined that the total antioxidant capacity was increased by increasing amount of licorice root. From the overall findings, it can be concluded that licorice root could be used as a feed additive without any adverse effect on performance. It has been demonstrated that the licorice root enables the production of functional eggs.Öğe The response of broilers to dietary organic acid mixture(Indian Veterinary Journal, 2007) Aksu, T.; Ates, C. T.; Erdogan, Z.; Baytok, E.Organic acids are an alternative to antibiotic to be used exclusively as a growth stimulant and for improvement of the feed conversion rate in farm animals (Esteive et al., 1997). Organic acids reduce production of toxic components by bacteria and change the morphology of the intestinal wall and reduce colonization of pathogens on the intestinal wall, thus preventing damage of the epithelial cells (Langhout, 2000). The objectives of this study were to investigate the effect of supplementation of different levels of organic acid mixture on broiler performance, carcass characteristics and meat composition.
