Yazar "Canogullari, Sibel" seçeneğine göre listele
Listeleniyor 1 - 20 / 21
Sayfa Başına Sonuç
Sıralama seçenekleri
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 EFFECT OF GARLIC POWDER ON EGG YOLK AND SERUM CHOLESTEROL AND PERFORMANCE OF LAYING HENS(Natl Veterinary Research Inst, 2009) Canogullari, Sibel; Karaman, Mesut; Erdogan, Zeynep; Baylan, Mikail; Kucukgul, Altug; Duzguner, Vesile; Ozugur, Ali KemaliThe potential influence of dietary garlic powder on egg yolk and serum cholesterol concentrations, overall performance, and egg traits in laying hens was evaluated. One hundred and forty, 50-week-old, Hy-line white layers were allocated to four dietary groups. Each group comprised seven replicates of five layers in groups of four. The diets were supplemented with 0% (control), 0.5%, 1%, and 2% garlic powder for 12 weeks. There were no significant (P>0.05) differences among the groups in feed consumption and feed efficiency. Egg production increased in the 0.5 and 1% garlic powder supplemented groups compared with the control group and in the 2% garlic powder supplemented group (P<0.05). The supplementation of garlic powder had no significant effects (P>0.05) on egg yolk index and egg yolk weight. However, there were significant differences (P<0.05) in the egg albumen index, egg shell index, and egg Haugh unit. The egg yolk cholesterol concentration decreased (P<0.05) with the addition of garlic powder. Plasma low-density lipoprotein (LDL) cholesterol concentrations also decreased linearly (P<0.05), with increasing levels of dietary garlic powder. Plasma LDL-cholesterol concentrations dropped by 14.45%, 21.76%, and 33.24% in the 0.5%, 1%, and 2%,garlic powder supplemented groups, respectively. Plasma high-density lipoprotein (HDL) cholesterol concentrations were not influenced by dietary garlic powder. The results of this study demonstrate that garlic powder addition decreased egg yolk cholesterol and plasma LDL cholesterol concentrations.Öğe Effect of garlic powder on egg yolk and serum cholesterol and performance of laying hens(2009) Canogullari, Sibel; Karaman, Mesut; Erdogan, Zeynep; Baylan, Mikail; Kucukgul, Altug; Duzguner, Vesile; Ozugur, Ali KemaliThe potential influence of dietary garlic powder on egg yolk and serum cholesterol concentrations, overall performance, and egg traits in laying hens was evaluated. One hundred and forty, 50-week-old, Hy-line white layers were allocated to four dietary groups. Each group comprised seven replicates of five layers in groups of four. The diets were supplemented with 0% (control), 0.5%, 1%, and 2% garlic powder for 12 weeks. There were no significant (P>0.05) differences among the groups in feed consumption and feed efficiency. Egg production increased in the 0.5 and 1% garlic powder supplemented groups compared with the control group and in the 2% garlic powder supplemented group (P<0.05). The supplementation of garlic powder had no significant effects (P>0.05) on egg yolk index and egg yolk weight. However, there were significant differences (P<0.05) in the egg albumen index, egg shell index, and egg Haugh unit. The egg yolk cholesterol concentration decreased (P<0.05) with the addition of garlic powder. Plasma low-density lipoprotein (LDL) cholesterol concentrations also decreased linearly (P<0.05), with increasing levels of dietary garlic powder. Plasma LDL-cholesterol concentrations dropped by 14.45%, 21.76%, and 33.24% in the 0.5%, 1%, and 2% garlic powder supplemented groups, respectively. Plasma high-density lipoprotein (HDL) cholesterol concentrations were not influenced by dietary garlic powder. The results of this study demonstrate that garlic powder addition decreased egg yolk cholesterol and plasma LDL cholesterol concentrations.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 dietary Ferula elaeochytris root powder on the growth and reproductive performance of Japanese quail (Coturnix coturnix japonica): It is not recommended in a breeder diet(2009) Canogullari, Sibel; Baylan, M.; Copur, Gulsen; Sahin, A.This study was conducted to investigate the effect of dietary Ferula elaeochytris (FE) root powder on the growth and reproductive performance of Japanese quail (Coturnix coturnix japonica). In the first stage of the experiment (2-5 weeks), 135 two-week old quail chicks were divided into three experimental groups, each including 45 birds: control, FE5 (5 g FE root powder per kg grower diet) and FE10 (10 g FE root powder per kg grower diet). These groups were subdivided into three replicates. Grower diet included 220 g CP and 13.0 MJ ME kg-1. In the second stage of the experiment (5-12 weeks), the quails were treated with the respective FE doses within a layer diet containing 160 g CP and 10.9 MJ kg-1. In the first stage of the experiment (growth period), addition of FE root powder to the grower diet did not affect body weight gain, feed intake or feed conversion ratio (P > 0.05). In the second stage of the experiment (reproductive period), there was no effect on age at sexual maturity, body weight of quail at 50% egg production, the first ten egg weights, mean egg weight, egg production or egg quality characteristics (P > 0.05). Even though the testis weight of male quail was increased by FE treatment in a dose-dependent manner (7.02 g, 9.72 g and 9.57 g in respective groups), fertility and hatchability were totally depressed by FE treatment. In conclusion, FE root powder had no oestrogenic effect on quail hens, but caused infertility in males, suggesting that FE root powder must not be used in breeder quail flocks. © Verlag Eugen Ulmer.Öğe Effects of dietary Ferula elaeochytris root powder on the growth and reproductive performance of Japanese quail (Coturnix coturnix japonica): it is not recommended in a breeder diet(Eugen Ulmer Gmbh Co, 2009) Canogullari, Sibel; Baylan, M.; Copur, Gulsen; Sahin, A.This study was conducted to investigate the effect of dietary Ferula elaeochytris (FE) root powder on the growth and reproductive performance of Japanese quail (Coturnix coturnix japonica). In the first stage of the experiment (2-5 weeks), 135 two-week old quail chicks were divided into three experimental groups, each including 45 birds: control, FE5 (5 g FE root powder per kg grower diet) and FE10 (10 g FE root powder per kg grower diet). These groups were subdivided into three replicates. Grower diet included 220 g CP and 13.0 MJ ME kg(-1). In the second stage of the experiment (5-12 weeks), the quails were treated with the respective FE doses within a layer diet containing 160 g CP and 10.9 MJ kg(-1). In the first stage of the experiment (growth period), addition of FE root powder to the grower diet did not affect body weight gain, feed intake or feed conversion ratio (P > 0.05). In the second stage of the experiment (reproductive period), there was no effect on age at sexual maturity, body weight of quail at 50% egg production, the first ten egg, weights, mean egg weight, egg production or egg quality characteristics (P > 0.05). Even though the testis weight of male quail was increased by FE treatment in a dose-dependent manner (7.02 g, 9.72 g and 9.57 g in respective groups), fertility and hatchability were totally depressed by FE treatment. In conclusion, FE root powder had no oestrogenic effect on quail hens, but caused infertility in males, suggesting that FE root powder must not be used in breeder quail flocks.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 Effects of Different Selection Methods for Body Weight on Some Genetic Parameters in Japanese Quail(Medwell Online, 2009) Baylan, Mikail; Canogullari, Sibel; Sahin, Ahmet; Copur, Gulsen; Baylan, MakbuleThe aim of this study was to investigate the effects on some genetic parameters of different selection methods for Body Weight (BW) in Japanese quail. For this aim, line M-55 was subjected to individual selection for 5 weeks BW while a reciprocal recurrent selection method was applied to lines R-33 and S-55 Selection lasted 2 generations. In individual lines, the percentage deviation of body weight was an average of 1.41, 1.73 and 2.19% in the 1st generation males, females and mixed sex, respectively. These parameters reached 5.57, 7.44 and 6.29% in the 2nd generation. In the reciprocal recurrent selection, heterosis of BW in the crossbred birds occurred in the positive direction and was 3.22 and 1.95% for R3S5 and S5R3, respectively in the 1st generation. In the 2nd generation, heterosis was calculated as 6.50 and 7.31% in R3S5 and S5R3, respectively, higher than the 1st generation. At the end of the 2 generations, R3S5 had higher heterosis than S5R3 BW increase was similar in the 2 selection methods. Heritability of BW in the individual lines was 0.27 and 0.73 in the 1st and 2nd generation, respectively. In the reciprocal selection, heritability of BW was estimated as 0.37 and 0.19 in the 1st generation and 0.17 and 0.27 in the 2nd generation for R3S5 and S5R3, respectively. As a result, at the end of the 2 generations of selection, an improvement in BW increase was obtained in both selection methods. If selection is continued in these lines, this may be important especially with regards BW.Öğe Effects of divergent selection methods based on body weights of quail on improvement of broiler quail parents(2009) Baylan, Mikail; Canogullari, Sibel; Sahinler, Suat; Uluocak, A. Nazim; Copur, GulsenThe purpose of this study, was to investigate the effects on body weight, weight gain, feed intake and feed efficiency of different selection methods for Body Weight (BW) in Japanese quail. For this purpose, line M55 was subjected to individual selection for 5 week BW while, a reciprocal recurrent selection method was applied to lines R33 and S55. Selection lasted 2 generations. Five weeks body weights in the parents of M55, R33 and S55 lines were obtained and were 273.5, 258.9 and 259.0 g in the beginning generation; 282.9, 284.8 and 279.5 g in the first generation and 284.6, 285.5 and 284.3 g in the 2nd generation. Average 5 weeks old body weights in the offspring of mass selection lines (M55) and offspring of cross-bred lines (R3S5 and S5R3) obtained from reciprocal mating were 279.5, 267.3 and 264.0 g in the 1 st generation and the values obtained were 300.7, 300.5 and 300.2 g in the 2nd generation. In the 2nd generation, body weight increases were higher than the 1st generation, especially in the reciprocal selection lines. Feed consumption of the 1st generation in M55, R3S5 and S5R3 lines were 768.62, 682.61 and 674.18 g and in the 2nd generation were 776.77, 790.64 and 791.71 g, respectively. Feed conversion efficiency was also calculated and was 2.83, 2.63 and 2.63 in the 1st generation and 2.66, 2.71 and 2.73 in the 2nd generation. Applying different selection methods in the present study seeking to increase body weight in quails either in parents or in offspring showed that reciprocal selection lines resulted in higher body weight than initial body weight. Feed consumption and feed conversion efficiency are similar to in the reciprocal selection lines both in the 1st and 2nd generations. © Medwell Journals, 2009.Öğe Effects of Divergent Selection Methods Based on Body Weights of Quail on Improvement of Broiler Quail Parents(Medwell Online, 2009) Baylan, Mikail; Canogullari, Sibel; Sahinler, Suat; Uluocak, A. Nazim; Copur, GulsenThe purpose of this study, was to investigate the effects on body weight, weight gain, feed intake and feed efficiency of different selection methods for Body Weight (BW) in Japanese quail. For this purpose, line M(55) was subjected to individual selection for 5 week BW while, a reciprocal recurrent selection method was applied to lines R(33) and S(55). Selection lasted 2 generations. Five weeks body weights in the parents of M(55), R(33) and S(55), lines were obtained and were 273.5, 258.9 and 259.0 g in the beginning generation; 282.9, 284.8 and 279.5 g in the first generation and 284.6, 285.5 and 284.3 g in the 2nd generation. Average 5 weeks old body weights in the offspring of mass selection lines (M(55)) and offspring of cross-bred lines (R(3)S(5) and S(5)R(3)) obtained from reciprocal mating were 279.5, 267.3 and 264.0 g in the first generation and the values obtained were 300.7, 300.5 and 300.2 g in the 2nd generation. In the 2nd generation, body weight increases were higher than the 1st generation, especially in the reciprocal selection lines. Feed consumption of the 1st generation in M(55), R(3)S(5) and S(5)R(3) lines were 768.62, 682.61 and 674.18 g and in the 2nd generation were 776.77, 790.64 and 791.71 g, respectively. Feed conversion efficiency was also calculated and was 2.83, 2.63 and 2.63 in the 1st generation and 2.66, 2.71 and 2.73 in the 2nd generation. Applying different selection methods in the present study seeking to increase body weight in quails either in parents or in offspring showed that reciprocal selection lines resulted in higher body weight than initial body weight. Feed consumption and feed conversion efficiency are similar to in the reciprocal selection lines both in the 1st and 2nd generations.Öğe Effects of propolis and pollen supplementations on growth performance and body components of Japanese quails ( Coturnix coturnixjaponica)(2009) Canogullari, Sibel; Baylan, M.; Sahinler, Nuray; Sahin, A.The present study was carried out to investigate the effects of honey bee propolis and pollen supplementation on growth performance and body components in quail (Coturnix coturnix japonica). Two experiments were conducted. In the first experiment, propolis ethanolic extract (30%, PEE) was supplemented in diets at levels of 0, 5 and 10 ml PEE kg 1 while in the second experiment, pollen was supplemented in diets at four levels (0, 5, 10 and 20 g pollen kg-1). In both experiments, chicks were fed with diet containing 240 g crude protein and 3100 kcal ME per kg diet. During the experimental period, body weight, feed consumption and feed efficiency were determined weekly. At the end of the experiments, 3 female and 3 male quail from each subgroup were killed humanely to determine body components. Experimental results showed that supplementation of PEE and pollen did not significantly affect body weight gain, feed efficiency or body components (P > 0.05). It was concluded that propolis and pollen had no effect at the levels investigated on performance and body components of quail. © Verlag Eugen Ulmer, Stuttgart.Öğe Effects of propolis and pollen supplementations on growth performance and body components of Japanese quails (Coturnix coturnix japonica)(Eugen Ulmer Gmbh Co, 2009) Canogullari, Sibel; Baylan, M.; Sahinler, Nuray; Sahin, A.The present study was carried out to investigate the effects of honey bee propolis and pollen supplementation on growth performance and body components in quail (Coturnix coturnix japonica). Two experiments were conducted. In the first experiment, propolis ethanolic extract (30%, PEE) was supplemented in diets at levels of 0, 5 and 10 ml PEE kg(-1) while in the second experiment, pollen was supplemented in diets at four levels (0, 5, 10 and 20 g pollen kg-1). In both experiments, chicks were fed with diet containing 240 g crude protein and 3100 kcal ME per kg diet. During the experimental period, body weight, feed consumption and feed efficiency were determined weekly. At the end of the experiments, 3 female and 3 male quail from each subgroup were killed humanely to determine body components. Experimental results showed that supplementation of PEE and pollen did not significantly affect body weight gain, feed efficiency or body components (P > 0.05). It was concluded that propolis and pollen had no effect at the levels investigated on performance and body components of quail.Öğe Egg Weight but Not Egg Shape Index, Determines the Hatchability in Japanase Quail (Coturnix coturnix japonica)(Medwell Online, 2010) Copur, Gulsen; Baylan, Mikail; Canogullari, SibelThis study was carried out to investigate the effect of egg Shape Index (SI) and Egg Weight (EW) on hatchability parameters, hatching weight and weekly live weight in Japanese quails (Coturnix coturnix japonica). Quail eggs were divided into three groups according to their SI (SI-1:<= 76: SI-2:77-78 and SI-3:>= 79%) and into three groups according to their weight (A1:<13.00 g, A2:13.01-14.00 g and A3:>= 14.01 g), respectively. The mean values of hatching weight were found as 8.41, 9.40 and 10.27 g in A1, A2 and A3 egg weight groups and as 8.97, 9.37 and 8.90 g in SI-1, SI-2 and SI-3 SI groups, respectively. The differences between groups in terms of these traits were statistically significant (p<0.01). The fertility rate was not affected significantly by egg weight. The hatchability of fertile eggs was not affected by (SI) groups but it was affected by egg weight groups (p<0.01). The highest hatchability of fertile eggs was observed in A1 group (79.47%) and this was followed by A2 (78.67%) and A3 (74.86%) groups. The difference in hatchability between egg weight groups was statistically significant (p<0.01) and the mean value of this trait in A3 group was lower (64.31%) than those in A1 (72.12%) and A2 (70.45%) groups. The differences between SI groups in terms of hatchability of total eggs, embryonic mortality rates, pipped and discarded chick rates were not statistically significant. The average Body Weights (BW) for the first 2 weeks between egg weight groups were statistically significant (p<0.01) but these differences were not statistically significant after 3 weeks of age.Öğe Egg Weight but not egg shape index, determines the hatchability in Japanase quail (Coturnix coturnix japonica)(2010) Copur, Gulsen; Baylan, Mkail; Canogullari, SibelThis study was carried out to investigate the effect of egg Shape Index (SI) and Egg Weight (EW) on hatchability parameters, hatching weight and weekly live weight in Japanese quails (Coturnix coturnix japonica). Quail eggs were divided into three groups according to their SI (SI-1: <76: SI-2:77-78 and SI-3: > 79%) and into three groups according to their weight (Al: <13.00 g, A2:13.01-14.00 g and A3: > 14.01 g), respectively. The mean values of hatching weight were found as 8.41, 9.40 and 10.27 g in Al, A2 and A3 egg weight groups and as 8.97, 9.37 and 8.90 g in SI-1, SI-2 and SI-3 SI groups, respectively. The differences between groups in terms of these traits were statistically significant (p<0.01). The fertility rate was not affected significantly by egg weight. The hatchability of fertile eggs was not affected by (SI) groups but it was affected by egg weight groups (p <0.01). The highest hatchability of fertile eggs was observed in Al group (79.47%) and this was followed by A2 (78.67%) and A3 (74.86%) groups. The difference in hatchability between egg weight groups was statistically significant (p <0.01) and the mean value of this trait in A3 group was lower (64.31%) than those in Al (72.12%) and A2 (70.45%) groups. The differences between SI groups in terms of hatchability of total eggs, embryonic mortality rates, pipped and discarded chick rates were not statistically significant. The average Body Weights (BW) for the first 2 weeks between egg weight groups were statistically significant (p <0.01) but these differences were not statistically significant after 3 weeks of age. © Medwell Journals, 2010.Öğe The impact of eggshell colour and spot area in Japanese quails: I. eggshell temperature during incubation and hatching results(Revista Brasileira Zootecnia Brazilian Journal Animal Sci, 2016) Alasahan, Sema; Akpinar, Gulsen Copur; Canogullari, Sibel; Baylan, MikailThis study was carried out to investigate the effects of eggshell colour and spot properties (colour and size of the spot area) on eggshell incubation temperature and hatching outcomes of Japanese quail eggs (Coturnix coturnix japonica). Study material was allocated to five groups according to their eggshell and spot colours: black spots on greyish white coloured eggshell (I), blue spots on greyish white coloured eggshell (II), diffuse brown spots on greyish brown coloured eggshell (III), brown spots on light green coloured eggshell (IV), and small brown spots on greyish brown coloured eggshell (V). The size of the spotted area was determined in each egg group using digital image analysis. Mean relative weight losses of hatched and unhatched eggs between days 0-10 and 0-14 of embryonic development were 4.76% and 10.48% and 9.17% and 15.46%, respectively. The mean eggshell temperatures of hatched and unhatched eggs measured at the equatorial region on days 10 and 14 during embryonic development were 36.92 and 37.79 degrees C and 36.84 and 37.18 degrees C, respectively. Eggshell temperatures at the equatorial region on days 10 (36.89 degrees C) and 14 (37.57 degrees C) of embryonic development were lower than the fixed temperature of the incubator (37.6 degrees C). Fertility, hatchability of fertile eggs, and hatchability and embryonic mortality rates do not vary in relation to eggshell colour or the size of the spotted area.Öğe The impact of eggshell colour and spot area in Japanese quails: II. Slaughter and carcass characteristic(Revista Brasileira Zootecnia Brazilian Journal Animal Sci, 2016) Alasahan, Sema; Akpinar, Gulsen Copur; Canogullari, Sibel; Baylan, MikailThis study was carried out to investigate the effects of eggshell colour and spot properties (colour and size of the spot area) on growth performance and carcass traits of Japanese quail (Coturnix coturnix japonica) eggs. Study material were allocated to five groups according to their eggshell and spot colours: black spots on greyish white coloured eggshell (I), blue spots on greyish white coloured eggshell (II), diffuse brown spots on greyish brown coloured eggshell (III), brown spots on light green colored eggshell (IV), and small brown spots on greyish brown coloured eggshell (V). The size of the spotted area was determined in each egg group using digital image analysis. The groups did not differ for body weight and length of the shank at the end of the growth period. However, the groups differed significantly for carcass yield after slaughter (not eviscerated) and carcass yield. These parameters were highest in Group I (82.08 and 76.09%) and lowest in Group III (80.20 and 73.86%). Digital image analysis demonstrated that heart length, cardiac fat area, gizzard width, and intestine length varied between the groups. Cardiac fat area was largest in Group III (0.86 cm(2)) and smallest in Group V (0.65 cm(2)). Gizzard width was greatest in Group I (2.63 cm) and smallest in Group V (2.47 cm). Intestine length was greatest in Group V (78.45 cm) and smallest in Group IV (72.39 cm). Body weight, shank length, and slaughter and carcass weight do not vary in relation to eggshell colour or the size of the spotted area. The lengths of intestine and heart, gizzard width, and cardiac fat area do vary in relation to eggshell colour or the size of the spotted area.Öğe The Response of Japanese Quails to Dietary Thymbra spicata L. Essential Oil(Ars Docendi, 2018) Aksu, Taylan; Aksu, Devrim S.; Kaya, Durmus A.; Duran, Nizami; Onel, Suleyman E.; Canogullari, SibelIn the present study, the response of Japanese Quails to dietary Thymbra spicata L. essential oil was investigated. A total of 192 Japanese quail chicks, 1-day old and of mixed sexes, were used in the feeding trial. Birds were randomly allocated to four dietary treatments comprising three experimental groups and one control group (basal diet). Each group was divided into four subgroups, with each containing twelve chicks. EO was added daily to the basal diet at levels of 200 (T1), 400 (T2) and 600 mg/kg (T3), respectively. There was a significantly increase in live weight at 35 days when quails were supplemented with increasing level of EO. Moreover, live weight gain significantly increased over ranges of 28-35 and 0-35 days in quails fed the EO at 600 mg/kg level compared to the control group (P<0.05). No differences were observed among treatments for feed intake. A significantly improvement in feed efficiency at 28-35 days (P<0.001) was observed in treated groups. Treatments significantly decreased the number of total bacteria and Escherichia coli in the small intestine. A significantly decrease was observed for TG levels in all treatment groups. TG/TC rate was significantly decreased in supplemented groups (P<0.001). Treatments did not alter serum HDL and LDL levels. In conclusion, dietary T. spicata L. EO enhanced the performance parameters by showing time-depended effects. This property could be important to recommend the implementation time of such compounds to the poultry diets.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.
