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    Differences in performance, carcass characteristics and meat quality between fast- and slow-growing broiler genotypes
    (Mattioli 1885, 2019) Dogan, Sibel Canogullari; Baylan, Mikail; Bulancak, Aycen; Ayasan, Tugay
    This study was conducted to determine the differences in performance, carcass characteristics and meat quality between fast- and slow-growing broilers. Ross-308 genotype was used as the fast-growing genotype, while local T2-Y2 genotype was used as the slow-growing genotype. The study continued until both genotypes reached acceptable market weight (2 kg). Both genotypes consisted of 4 subgroups, each containing 50 broiler chicks. Fast-growing broilers reached market weight (2 kg) on day 38, while slow-growing broilers reached the same weight on day 72. Fast-growing broilers consumed less feed to attain 2 kg live weight compared with slow-growing broilers. The feed conversion ratio of the fast-growing broilers was 1.63, while that of the slow-growing broilers was 2.67. Significant differences were observed between the genotypes with regard to the percentage weights of the gizzard, liver, leg and breast. The percentage weights of the leg and abdominal fat were higher in slow-growing broilers, while the percentage weight of the breast was higher in fast-growing broilers. No difference was observed between the genotypes with regard to cooking loss in leg and breast meats, whereas differences were recorded with regard to the water holding capacity (%) in leg meat. The slow-growing genotype had lower pH values in breast and leg meats. The values of leg meat brightness (L*), redness (a*) and yellowness (b*) were higher in the slow-growing broilers, but the differences were not statistically significant. The L* and a* values of breast meat were found to be higher in slow-growing broilers. These results showed that in the slow-growing genotype, breast and leg meat color L, a and b value are enhanced. However, the fast-growing genotype has better performance and carcass characteristics compared to the slow-growing genotype.
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    Effect of Dietary Supplementation of Black Cumin Seeds (Nigella sativa) on Performance, Carcass Traits, and Meat Quality of Japanese Quails (Coturnix coturnix japonica)
    (Mdpi, 2022) Asghar, Muhammad Umair; Dogan, Sibel Canogullari; Wilk, Martyna; Korczynski, Mariusz
    Simple Summary Over the last decade, there has been a surge of interest in the use of natural herbs as antibiotic alternatives or natural feed additives in diets to boost animal productivity and optimize the potential production. One of the natural feed additives is black cumin powder (BCP), which is characterized by high antioxidant activity and high phenolic contents. The aim of this study was to evaluate the influence of varying levels of BCP added to the Japanese quail diet on the growth, slaughter carcass, sensory features, and some meat preservation properties. It is worth noting that BCP lowered the overall quantity of bacteria and increased the quality of meat preservation. According to our findings, the supplementation of BCP had a positive influence on the quail growth, lipid profile, antioxidant, immunity, meat storage quality, pH, and decrease in pathogenic bacteria content. The current study was conducted to determine the effect of adding black cumin (Nigella sativa) powder (BCP) to the Japanese quail diet on the carcass characteristics and meat quality. In this research, 240 Japanese quail chicks (mean initial body weight 9.15 +/- 0.12) were divided into four groups of four replications each. Treatments consisted of the addition of BCP at levels 1, 2, and 4% to the mixed feed and control group without the BCP additive. Compared to the other groups, the group with the 2% BCP diet had a higher live weight (LW), body weight gain (BWG), and a better feed conversion ratio (FCR, p < 0.05). BCP administration had no impact on the carcass characteristics, however, BCP had a significant effect on the thigh and breast meat. The animal study protocol was approved by the Nigde Governorship, Provincial Directorate of Agriculture and Forestry, Turkey (protocol code: E-15018773-050.01.04-75932 and date of approval: 26 April 2021) for studies involving animals. Lower thiobarbituric acid (TBA), pH, peroxide, and total psychrophilic bacteria levels were found in the BCP added groups compared to the control group (p < 0.05). When compared with the control, the sensory properties such as color, juiciness, softness, and flavor were significantly higher in the BCP treated groups, especially when fed the 2% BCP diet. It can be concluded that BCP as an additive to quail feeds had a significant effect on the performance of quails as well as on the shelf life of the meat. In order to avoid health and environmental concerns, it was concluded that BCP can be used as a natural additive to replace synthetic antimicrobials and antioxidants at the level of 1-2% in quail compound feeds.
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    Evaluation of dietary supplementation of garlic powder (Allium sativum) on the growth performance, carcass traits and meat quality of Japanese quails (Coturnix coturnix japonica)
    (Elsevier, 2024) Jalal, Hassan; Dogan, Sibel Canogullari; Giammarco, Melania; Cavallini, Damiano; Lanzoni, Lydia; Pezzi, Paolo; Akram, Muhammad Zeeshan
    Dietary supplementation with plant- based products may arise as part of an alternative strategy to using antibiotics as growth promoters in the poultry industry. Garlic powder (GP) GP ) possesses antimicrobial and antioxidant properties. The aim was to investigate the effect of dietary supplementation of GP on growth performance, carcass traits and meat quality of the Japanese quail. A total of 240, day-old mixed gender Japanese quail were assigned to 4 treatment groups, each group being replicated 4 times and containing 15 birds in each replication. Birds were provided with either a basal diet (control) or basal diet supplemented with 0.5%, 1% and 2% GP for 5 wk. At slaughter age, birds fed 1% GP had higher (P < 0.05) live weight and body weight gain when compared to the control. Supplementation with different levels of GP had no influence (P P > 0.05) on feed intake, feed conversion ratio except 3rd wk, carcass traits and abdominal fat. Thiobarbituric acid, peroxide and pH values in breast meat of birds receiving GP (1% or 2%) after storage (0, 1, 3, 5, and 7 d) were lower (P < 0.05) than the birds in control. Furthermore, total psychrophilic bacteria count was lower in breast meat of birds supplemented with GP at any dose compared to the birds of control. Sensory characteristics such as color, aroma, juiciness and tenderness were observed significantly better (P < 0.05) in GP supplemented groups especially when fed 1% GP. In conclusion, supplementing the diet with 1% to 2% GP demonstrated growth-promoting effects and positively impacted meat quality, including sensory characteristics.
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    Influence of eggshell colour on egg yolk antibody level, incubation results, and growth in broiler breeders
    (Revista Brasileira Zootecnia Brazilian Journal Animal Sci, 2017) Baylan, Mikail; Celik, Ladine Baykal; Akpinar, Gulsen Copur; Alasahan, Sema; Kucukgul, Altug; Dogan, Sibel Canogullari
    This study was performed to determine the effect of shell colour in eggs acquired from Ross-308 broiler breeders on the interior and exterior quality of the egg, the antibody content of the egg yolk, and growth performance. The shell colours of a total of 1350 eggs were classified, using a colorimeter, into three groups: dark (E < 64), medium (E: 64.00-67.00), and light (E > 67). The difference between groups with respect to egg weight, shape index, shell weight, and Haugh unit value was significant. Egg yolk antibody content (IgY) was 6.658 mg/mL in the dark colour group, 5.130 mg/mL in the medium colour group, and 5.242 mg/mL in the light colour group. Among incubation characteristics, the fertility rate as, in order, 94.66%, 92.14%, and 87.92% in dark, medium, and light shell colour eggs, and the hatchability was 87.00%, 84.28%, and 80.57%, in the same order. No significant difference was observed between groups with respect to hatchability of fertile eggs and embryonic mortality rates. No significant difference was observed between groups for live weight, feed intake, and feed conversion ratio either. The eggshell colour has an effect on yolk antibody content and on the hatchability, but it has no influence on hatchability of fertile eggs, Haugh unit and growth performance.
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    Performance, egg quality and serum parameters of Japanese quails fed diet supplemented with Spirulina platensis
    (Parlar Scientific Publications, 2016) Dogan, Sibel Canogullari; Baylan, Mikail; Erdogan, Zeynep; Akpinar, Gulsen Copur; Kucukgul, Altug; Duzguner, Vesile
    This experiment was conducted to evaluate the influence of Spirulina platensis on growth performance, egg quality and some serum parameters of laying Japanese quails. For this experiment, 100 ten weeks-old, female Japanese quails (Coturnix coturnix Japonica) with similar body weight were caged individually and were randomly divided into four groups of 25 quails each. Quails were fed diets supplemented with 0 (control), 0.5, 1.0 and 2.0% Spirulina platensis for 8 weeks. Spirulina platensis addition did not affect feed conversion ratio, feed intake, egg production, egg weight, shape index, eggshell thickness and haugh unit, significantly (P>0.05). However, there were significant differences (P<0.05) in final body weight, yolk index, albumen index and eggshell weight of experimental groups. There were significant differences (P<0.05) between groups in low density lipoprotein (LDL cholesterol) and high density lipoprotein (HDL cholesterol) concentrations. The LDL cholesterol concentration decreased while HDL cholesterol concentration increased with the increased supplementation of Spirulina platensis. Spirulina platensis supplementation also decreased plasma total cholesterol and trigyliceride levels between groups numerically but not statistically (P>0.05). The mean egg yolk cholesterol levels dropped by 19.65 and 18.93% in the 1.0 or 2.0% Spirulina platensis supplemented groups compared with control group. In conclusion, Spirulina algae can be used safely in laying quails diets with important effects on serum parameters and egg yolk cholesterol. © 2016 PSP.
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    PERFORMANCE, EGG QUALITY AND SERUM PARAMETERS OF JAPANESE QUAILS FED DIET SUPPLEMENTED WITH SPIRULINA PLATENSIS
    (Parlar Scientific Publications (P S P), 2016) Dogan, Sibel Canogullari; Baylan, Mikail; Erdogan, Zeynep; Akpinar, Gulsen Copur; Kucukgul, Altug; Duzguner, Vesile
    This experiment was conducted to evaluate the influence of Spirulina platensis on growth performance, egg quality and some serum parameters of laying Japanese quails. For this experiment, 100 ten weeks-old, female Japanese quails (Coturnix coturnix Japonica) with similar body weight were caged individually and were randomly divided into four groups of 25 quails each. Quails were fed diets supplemented with 0 (control), 0.5, 1.0 and 2.0% Spirulina platensis for 8 weeks. Spirulina platensis addition did not affect feed conversion ratio, feed intake, egg production, egg weight, shape index, eggshell thickness and haugh unit, significantly (P>0.05). However, there were significant differences (P<0.05) in final body weight, yolk index, albumen index and eggshell weight of experimental groups. There were significant differences (P<0.05) between groups in low density lipoprotein (LDL cholesterol) and high density lipoprotein (HDL cholesterol) concentrations. The LDL cholesterol concentration decreased while HDL cholesterol concentration increased with the increased supplementation of Spirulina platensis. Spirulina platensis supplementation also decreased plasma total cholesterol and trigyliceride levels between groups numerically but not statistically (P>0.05). The mean egg yolk cholesterol levels dropped by 19.65 and 18.93% in the 1.0 or 2.0% Spirulina platensis supplemented groups compared with control group. In conclusion, Spirulina algae can be used safely in laying quails diets with important effects on serum parameters and egg yolk cholesterol.
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    The Effect of Quinoa Seed (Chenopodium quinoa Willd.) Extract on the Performance, Carcass Characteristics, and Meat Quality in Japanese Quails (Coturnix coturnix japonica)
    (Mdpi, 2022) Naimati, Shaistah; Dogan, Sibel Canogullari; Asghar, Muhammad Umair; Wilk, Martyna; Korczynski, Mariusz
    Simple Summary There has been a rise of interest in using natural herbs as antibiotic alternatives or natural feed additives in diets to enhance animal productivity and maximize potential production during the last decades. Quinoa seed extract (QSE), which has a high antioxidant activity and phenolic content, is one of the natural feed additives. Quinoa (Chenopodium quinoa Willd.), a gluten-free pseudocereal, has grown in popularity over the years. Quinoa is a good source of protein (vital amino acids like lysine and methionine), carbohydrates, fiber, tocopherols (vitamin E), unsaturated fatty acids, and polyphenols. This research aimed to evaluate the effects of different amounts of QSE in the Japanese quail diet on growth, slaughter carcass, sensory characteristics, and certain meat preservation capabilities. The addition of QSE had a good effect on quail weight gain and growth of animals, lipid profile, antioxidant, immunity, meat storage quality, pH, and pathogenic bacteria content, according to our findings. It is worth mentioning that QSE reduced overall bacteria levels while improving meat preservation quality. According to the presented research, the best results of quail performance were obtained with 0.2 g/kg and 0.4 g QSE/kg of the quail's fodder. While the addition of 0.4 g QSE/kg of the quail's fodder had a significant effect on meat shelf life and could be used in poultry mixed feed to prevent or delay lipid oxidation of meat. This research was conducted to determine the effect of quinoa seed (Chenopodium quinoa Willd.) extract on the performance, carcass parameters, and meat quality in Japanese quails. In this study, 400 quail chicks were divided into a control group (without quinoa seed extract addition) and 3 experiment groups (4 replicates containing 25 quails in each). Commercial feed and the addition of different concentrations of quinoa seed extract (QSE) 0.1 g/kg, 0.2 g/kg, and 0.4 g/kg were used in the study. During the second week of the experiment, the highest feed intake was obtained from the supplemented groups (p < 0.01). After 5 weeks of experimentation, the highest feed consumption was noticed in the group with 0.4 g of QSE additive. The QSE additive affected the live weight gain values of all experimental groups during 1 week of the experiment. The highest values of hot carcass weight were noticed in groups with 0.2 and 0.4 g of QSE additive (p < 0.01). While the highest value of cold carcass weight was noticed in a group with 0.2 g of QSE additive (p < 0.05). Thigh, breast, back and neck ratio, and internal organs (except gizzard) were not affected by the supplementation of QSE. As a result of storage of breast meat at 4 degrees C for 0, 1 days, 3 days, 5 days, and 7 days, it was determined that the number of pH, thiobarbituric acid, peroxide, and total psychrophilic bacteria were lower in the groups with QSE as compared to the control group (p < 0.05). In conclusion, the best results of quail performance were obtained with 0.2 g/kg and 0.4 g QSE/kg of the quail's fodder. While the addition of 0.4 g QSE/kg of the quail's fodder had a significant effect on meat shelf life and could be used in poultry mixed feed to prevent or delay lipid oxidation of meat.