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Öğe Dietary threonine supplementation for improving growth performance and edible carcass parts in Japanese quails, Coturnix coturnix Japonica(2006) Baylan, Mikail; Canogullari, Sibel; Ayasan, Tugay; Sahin, AhmetThe present study was conducted to evaluate the effects of dietary threonine amino acid supplementation on growth performance and carcass characteristics of Japanese quails. Day old, two hundred and seventy quail chicks were divided into six dietary treatment groups comprising 45 birds each, which consisted of 3 subgroups containing 15 birds for each replicate. Experimental diets were prepared and contained 0.81, 0.86, 0.91, 0.96, 1.01 and 1.06 % threonine amino acid, respective to groups 1-6, on fresh matter basis. Birds were fed these experimental diets respective to treatment for 35 days. Total feed intakes and the changes in body weights were determined on weekly basis. At the end of experiment 35-d, birds were killed humanly to determine their edible carcass parts. Results showed that threonine supplementation to the diet did not affect growth performance and edible carcass parts (p>0.05), assuming that birds can make metabolic adaptation to current dietary threonine supplementations. © Asian Network for Scientific Information, 2006.Öğe The Effect of Organic and Inorganic Selenium Supplementation on Egg Production Parameters and Egg Selenium Content of Laying Japanese Quail(Kafkas Univ, Veteriner Fakultesi Dergisi, 2010) Canogullari, Sibel; Ayasan, Tugay; Baylan, Mikail; Copur, GulsenThis study was carried out to determine the effects of organic and inorganic selenium on egg production parameters and egg yolk and egg albumin's selenium contents of laying Japanese quails. A total of ninety 10-week-old quails (Coturnix coturnix Japonica) were allocated to five dietary groups of 18 quails in each. Quails were caged individually and fed diets without supplementation (basal diet), basal diet with inorganic Se (sodium selenite) 0.2 mg/kg Se containing diet and basal diet with 0.1 mg/kg Se, 0.2 mg/kg Se and 0.3 mg/kg Se containing diets for 8 weeks. At the end of the study, there were no significant differences between the groups in final body weight, feed intake, feed efficiency, egg yield and egg weight. Se concentration in egg yolk and egg albumin were higher in Se supplemented groups than control group (P<0.001) and it is established that organic Se supplementation was more effective than the inorganic Se supplementation for increase Se content of quail eggs.Öğe Effects of an antibiotic and two phytogenic substances (cinnamaldehyde and 1,8-cineole) on yolk fatty acid profile and storage period -associated egg lipid peroxidation level(Revista Brasileira Zootecnia Brazilian Journal Animal Sci, 2020) Cimrin, Tulay; Tunca, Rahsan Ivgin; Avsaroglu, M. Dilek; Ayasan, Tugay; Kucukersan, SeherThis study was aimed at determining the effects of two phytogenic antioxidants, namely, cinnamaldehyde and 1,8-cineole, and an antibiotic added to laying hen feed on the fatty acid profile of egg yolk and the weight loss and lipid peroxidation levels of eggs stored for different periods. Ninety-six 48-week-old Bovans White hens were randomly assigned to four groups, each with four replicates of six hens per replicate. The four groups were provided with the following feeds: maize and soybean-based laying hen feed, basal ration (control group); basal ration added 500 mg/kg of an antibiotic; basal ration added 100 mg/kg of cinnamaldehyde; and basal ration added 100 mg/kg of 1,8-cineole. At the end of an eight-week feeding schedule, 48 eggs, including 12 from each group, were used for yolk fatty acid analysis. In total, 240 eggs, including 48 eggs for each of the five different storage periods tested (1, 14, 28, 42, and 56 days), were collected for the detection of egg weight loss and yolk malondialdehyde (MDA) levels. The feed supplements cinnamaldehyde and 1,8-cineole were determined to have significantly reduced lipid peroxidation in the yolk of eggs stored for 14, 28, 42, and 56 days, when compared with the results of the control group and antibiotic-treated group. Furthermore, dietary cinnamaldehyde supplementation was determined to have decreased the yolk level of myristic acid, a saturated fatty acid, and to have increased the yolk level of oleic acid, the major unsaturated fatty acid found in egg yolk (46.28%) in comparison with the levels measured in the other three groups. Cinnamaldehyde and 1,8-cineole were determined to extend the shelf life of eggs by providing protection against free oxygen radicals. Cinnamaldehyde could be used as an alternative feed supplement to enrich the yolk fatty acid profile in unsaturated fatty acids.Öğe Effects of boric acid supplementation on egg production and quality of Japanese quails (Coturnix coturnix Japonica)(2011) Ayasan, Tugay; Yurtseven, Sabri; Baylan, Mikail; Kutlu, H.R.The present study was carried out to determine whether dietary boric acid would affect egg production parameters and egg shell quality of Japanese quail (Coturnix coturnix japonica). In the study, 135 female Japanese quails at 8 weeks of age were used. The quails were divided into 3 groups randomly, each treatment group contained 3 subgroup containing 15 birds each. Commercial maize-barley based standard layer diets were formulated as basal diets for the control treatment, basal diets were supplemented with 200 and 400 ppm boric acid. The experiment lasted 8 weeks. The results obtained in this experiment showed that boric acid supplementation to the diet significantly affected egg weight, egg shell thickness and feed conversion efficiency, but there was no significant difference between the control and the boric acid supplemented groups in feed intake, egg production, egg shell weight, egg shape index.Öğe The effects of dietary inclusion of probiotic protexin on egg yield parameters of Japanese quails (Coturnix coturnix Japonica)(2006) Ayasan, Tugay; Ozcan, Bahri Devrim; Baylan, Mikail; Canogullari, SibelThe present study was conducted to investigate the effects of grower diets, dietary three different levels of probiotic (protexin) in grower diet on egg production parameters and egg shell quality of Japanese quail (Coturnix coturnix Japonica). In this study, 225 female Japanese quails were used. The experimental quails were divided into three dietary groups of similar mean weight comprising 75 birds each, consisted of 3 subgroup containing 25 birds each. Treatment groups were assigned control Group A (unsupplemented diet), Group B (0.5 kg per tonne "Protexin" supplemented diet) and Group C (1.0 kg per tonne "Protexin" supplemented diet) for 5 weeks. After 5 weeks, probiotic treatment was ceased and then all groups were allowed to nourish standard layer diet. Results showed that age and body live weight of quails at the first laying was found significant (P<0.05) but the first 10 eggs weight and shape index of the first 10 eggs were not found significant (P>0.05) different between groups. During the egg production period, probiotic supplementation to the diet did not affect feed intake, feed conversion efficiency, average egg weight, egg shell thickness and egg shape index (P>0.05), but affected egg production and egg shell weight (P<0.05). © Asian Network for Scientific Information, 2006.Öğe Effects of Dietary Selenium Source, Storage Time, and Temperature on the Quality of Quail Eggs(Humana Press Inc, 2011) Baylan, Mikail; Canogullari, Sibel; Ayasan, Tugay; Copur, GulsenWe report the effects of time of storage, temperature, and supplementation with sodium selenite- and selenium-enriched yeast on the quality of quail eggs. For this study, 90 10-week-old female Japanese quails (Coturnix coturnix japonica) with similar body size were caged individually and randomly divided into five groups of 18 quails each. One group was fed a normal diet and served as control. A second group was supplemented with 0.2 mg/kg sodium selenite (In-Se) and three groups supplemented with 0.1, 0.2, and 0.3 mg/kg of a commercially available selenium-enriched yeast (O-Se1, O-Se2, and O-Se3, respectively). The eggs were collected at third and fourth weeks of the experiment and were stored at 4A degrees C and 20A degrees C for 0, 15, 30, and 45 days. Extension of the storage time to 45 days at 20A degrees C resulted in significant deterioration of egg quality. The albumen Haugh unit (HU), pH, albumen index, yolk index, and egg weight loss were the most important parameters influenced by the nature of the selenium sources, storage time, and temperature. Storage time and temperature were also significant for egg weight loss, HU, and albumen and yolk indexes. The results show that supplementation with selenium yeast significantly affected shell weight, shell thickness, HU, albumen index, yolk index, and pH. The HU decreased with increased storage time and temperature. Higher levels of Se-yeast administration resulted in greater HU compared to the selenite and control groups.Öğe The effects of dietary yucca schidigera on egg yield parameters and egg shell quality of laying Japanese quails (Coturnix coturnix japonica)(Asian Network for Scientific Information, 2005) Ayasan, Tugay; Yurtseven, Sabri; Baylan, Mikail; Canogullari, SibelThe present study was carried out to determine whether dietary Yucca schidigera powder would affect egg yield parameters and egg shell quality of laying Japanese quail (Coturnix coturnix Japonica). In this study, 30 female Japanese quails were used. The experimental quails were divided into two dietary treatment groups of similar mean weight comprising 30 birds each, which was divided into 3 subgroups of birds each. A standard layer feed, basal diet of the trial was supplemented with 0 or 120 ppm Yucca schidigera powder. Feed and water were supplied ad libitum and light was provided 16 hours (from 8.00 to 24.00) each day. Laying performance was determined daily by measuring feed intake, feed conversion efficiency (feed intake/egg weight), egg production (number and weight). Egg quality, length, width, shape index (width/length), shell weight, shell thickness of each egg obtained on the sixth days of every week were recorded. After measuring width and length, the egg was broken was then separated and then weighted. Shell samples from top, middle and bottom sites of the egg were measured for thickness using a micrometer and the mean was calculated prior to statistical analysis. The results obtained in this experiment showed that Yucca schidigera supplementation to the diet tended to improve feed conversion efficiency, egg weight (P<0.05), while reducing egg shell thickness but not affected on feed intake, egg production, egg shell weight, egg shape index, number of eggs (42 days) (P>0.05). © Asian Network for Scientific Information, 2005.Öğe Threonine Requirement of Laying Japanese Quails(Medwell Online, 2009) Canogullari, Sibel; Baylan, Mikail; Ayasan, TugayIn order to determine the threonine requirement of laying Japanese quails, one experiment was conducted using laying performance as parameters. In the study, a total of 40 female Japanese quails at 8 weeks of age were used. The quails were divided into four groups randomly. Experimental treatments consisted of four concentrations of total threonine using diets that ranged from 0.74-1.04% in progressive increments of 0.10%. Feed and water were supplied ad libitum and light was provided 16 h (from 8.00-24.00) each day. Laying performance was determined daily by measuring feed intake, feed conversion efficiency (feed intake/egg weight), egg production (number and weight). The experimental period lasted 9 weeks. Increasing threonine level in the diets increased feed conversion efficiency, total egg production (g/bird/63 days), egg weight (g/bird/day) and number of eggs (bird/63 days). However, there were no significant differences among the groups (p>0.05). About 1.04% threonine level in diet increased egg production 9.79% and number of eggs 9.30% compared with the basal diet (0.74% threonine). The results suggest that the current NRC recommendation of 0.74% threonine for laying quails is not adequate to support comparable laying performance.
