Sürdürülebilir Kalkınma Amaçları
Yayınlar
- MakaleAçık Erişim2026Serum and hepatic lipid fractions and total protein status of laying hens supplemented with tarragon (Artemisia dracunculus L.) under different stocking densities
Kaya, Hacer; Karaalp, Musa; Kaynar, Özgür; Elmastaş, Mahfuz
High stocking density can induce metabolic disturbances in laying hens, particularly in lipid metabolism. This study evaluated the effects of dietary tarragon (Artemisia dracunculus L.) supplementation on serum and hepatic total protein and lipid parameters in laying hens reared under different stocking densities. A total of 192 50-week-old Lohmann Brown laying hens were assigned to a 2 × 4 factorial arrangement with two stocking densities, 5 or 7 hens per cage, and four dietary tarragon treatments providing 0, 1, 5, or 10 mmol/kg feed of tarragon-derived additional antioxidant activity for 8 weeks. Serum total protein concentration was not affected by stocking density but increased with tarragon supplementation, rising from 7.5 to 8.3 g/dL. Liver total protein concentration remained unchanged. SDS-PAGE analysis of pooled treatment-group samples identified 24 serum and 39 hepatic protein bands. High stocking density altered the serum lipid profile by increasing cholesteryl ester, free fatty acid, and acylglycerol proportions, as well as total cholesterol and triacylglycerol concentrations, while decreasing triacylglycerol and phospholipid proportions. Tarragon supplementation increased serum cholesteryl ester and phospholipid proportions and reduced serum triacylglycerol and free fatty acid proportions, together with lower total cholesterol and triacylglycerol concentrations. In the liver, high stocking density increased cholesteryl ester and free cholesterol proportions and triacylglycerol concentration, whereas it decreased triacylglycerol and phospholipid proportions and total cholesterol concentration. Tarragon supplementation increased hepatic cholesteryl ester, free cholesterol, and phospholipid proportions and reduced hepatic triacylglycerol proportion and concentration. Significant stocking density × tarragon-derived additional antioxidant activity interactions were observed for serum free fatty acid and hepatic free fatty acid and free cholesterol. Overall, stocking density had a stronger effect on lipid metabolism than on total protein status.
- MakaleAçık Erişim2020The impact of dietary tarragon (Artemisia dracunculus) on serum apelin, brain-derived neurotrophic factor, cardiac troponin concentrations and histopathology of liver tissue in laying hens housed at different stocking densities
Bayraktar, Bulent; Tekce, Emre; Kaya, Hacer; Karaalp, Musa; Turunc, Eylul
Due to its association with several other stress factors (poultry house gases, inadequate ventilation, heat, cold and poor hygiene), the high stocking density is a major stress factor that adversely affects the health and performance of poultry and the quality of the poultry products. Therefore, this experimental study was aimed at analysing the impact of different doses of dietary tarragon (Artemisia dracunculus) on the serum apelin, plasma brain-derived neurotrophic factor (p-BDNF), and cardiac troponin I (cTnI) concentrations, and the correlation between these indicators in laying hens housed at different stocking densities. The aim of this study is to investigate the effects of adding tarragon in different ratios to laying hen rations in the 2ndovulation period on the cTnI, apelin, and BDNF hormone concentrations and the liver histopathology. The experiment was carried out over a period of eight weeks, with 192 Lohman Brown commercial hybrids at 50 weeks of age. Eight groups (four replicates each), composed of laying hens of equal body weight, which were housed at stocking densities of 580 cm2/hen and 810 cm2/hen and received 0, 1, 5 and 10 mmol/kg of tarragon (Artemisia dracunculus) in the feed, were established. At the end of the trial, 96 of the housed egg-laying hens (3 birds in each subgroup, a total of 12 birds in each group) were randomly selected and blood samples were taken from the vena subcutanea ulnaris. The samples collected were analysed for the apelin, p-BDNF, and cTnI contents. The analysis results demonstrated that tarragon supplementation had no effect on the serum apelin, p-BDNF and cTnI concentrations (P > 0.05). The Sub-Groups ST1, ST1.2, and ST6 presented with severe hyperaemia of the sinusoidal, portal and acinar blood vessels, whilst the hyperaemia of these blood vessels was moderate in Sub-Group ST12. Apelin, BDNF, and cTnI can act as protective factors against negative consequences of stress (e.g., stocking density or heat stress).
- Derleme MakaleAçık Erişim2019Effects of Genotype and Production Systems on Chicken Meat Characteristics
Kaya, Hacer; Karaalp, Musa
Increased consumer interest in poultry meat produced in different production systems necessitates more detailed examination and comparison of chicken meat characteristics. Factors such as habit, reliability, product characteristics, animal welfare and sensitivity to environmental problems affect consumers’ preference to these products. Researches report that production systems and genotypes can be effective on protein, fat, fatty acids, vitamins, minerals, tenderness, juiciness, color and flavor. It was investigated that the effects of production systems and genotype on some chemical, physical and sensory characteristics of chicken meat in this review.
- MakaleAçık Erişim2018The effect of apple cider vinegar and mushroom stalk supplementation on laying hens
Karaalp, Musa; Aksakal, Vecihi; Sarikaya, Sevim Beyza Ozturk; Urusan, Hilal; Bayram, Bahri; Zulkadir, Ayhan
The aim of this trial was to study the effects of consuming water with apple cider vinegar (ACV) and feed including mushroom (Agaricus bisporus) stalk (MS) on performance and certain egg characteristics. The hens were separated into four treatment groups (with 4 replicates and 6 hens per replicate). The experimental groups were control (not consumed ACV and MS), ACV (3 ml/l drinking water), MS (20 g/kg feed) and ACV+MS (combination). At the end of the experiment, among the performance criteria tested, body weight, feed intake, egg production and weight of eggs, and feed efficiency were not affected by the treatments (P>0.05). Treatments had no effect on physical external and internal egg characteristics. The amount of yolk malondialdehyde of the ACV and MS groups was lower than the control group (P<0.05) in stored eggs (28 d) (P<0.05).
- MakaleYalnız künye2017Organik Olarak Üretilen Yumurtaların Bazı Besinsel ve Duyusal Özelliklerinin İyileştirilme Olanakları
Kaya, Hacer; Aksakal, Vecihi; Karaalp, Musa
Organik olarak üretilen tavuk yumurtasının daha fazla besleyicilik ve duyusal özelliklere sahip olmasının yanı sıra sağlığa zararlı herhangi bir madde içermemesi, tüketicinin öncelikli beklentilerindendir. Araştırmalar, beklenenin aksine; kafes yumurtaları ile organik yumurtaların kuru madde, lipit ve yağ asitleri arasında önemli bir farklılık bulunmadığını göstermektedir. Organik yumurtanın kafes yumurtasına göre yaklaşık iki kat fiyata satılmasının sadece psikolojik ve etik motivasyon taşıdığı bildirilmektedir. Avrupa Birliği Konseyi organik yumurta üretiminde tavukların bazal rasyonun yanı sıra yeşil kaba yem materyallerine erişimini de gerekli görmektedir. Ancak bu erişimin sağlanması durumunda, organik olarak üretilen yumurta tüketici beklentilerine karşılık verebilir. Araştırmalar ülkemiz Organik Tarım Kanuna göre tavuk başına ayrılan 4 m2 'lik gezinti alanının bu talepleri karşılamada yeterli olmadığını göstermektedir. Bu durum tavuklara ayrılan gezinti alanının çeşitli yem bitkileri ile rotasyona uygun olarak ekili olmasını sağlayacak şekilde artırılmasını veya gezinti alanına dışarıdan ilave yeşil kaba yem materyallerinin getirilmesini zorunlu kılmaktadır. Böylece fonksiyonel gıda özelliği olan bir ürün elde etmenin yanı sıra gagalama ve kanibalizmin azalarak hayvan refahının arttığı bir üretim tarzına ulaşılmış olacaktır. Bu derlemede organik yumurta üretiminde başta karotenoidler olmak üzere yağ asitleri gibi kimyasal içeriklerin artırılması ile renk, koku ve tat gibi duyusal özelliklerin iyileştirilme olanaklarına yönelik uygulamalara yer verilmiştir.
- MakaleYalnız künye2014The effect of Saccharomyces cerevisiae on milk yield, milk compositions and body condition score raised organically in dairy cows
Bayram, Bahri; Aksakal, Vecihi; Karaalp, Musa; Mazlum, Halit
The objective of this study was to evaluate the effect of Saccharomyces cerevisiae (SC) on milk yield, milk compositions and the body condition score raised organically in dairy cattle. For this aim, 120 lactating Holstein Friesian dairy cows were randomly divided into group control (n = 60) and treatment (n = 60) in a private organic dairy farming in the Kelkit District of the Gumushane Province in Turkey. The diet of group treatment each cow was supplementation with 6 g SC per day. The experimental was started after 30 days of calving and lasted 45 days after. The average daily milk yield production (p<0.01) was higher in the SC group (34.6±0.31 vs. 31.8±0.44kg day-1 in the treated and control group, respectively). The effect of SC on some milk compositions as non-fat solids (%), milk fat (%), protein (%) and lactose were statistically non-significant. Body condition score in the treated group (2.74±0.016) was higher than control group (2.58±0.017) (p<0.01). It was concluded that milk yield capacities in organic dairy cattle farming in case that the similar results are confirmed with additional studies can be substantially increased.
- MakaleAçık Erişim2011Bay laurel (Laurus nobilis L.) in Japanese quails feeding 1. Performance and egg quality parameters
Karaalp, Musa; Elmasta, Mahfuz; Genc, Nusret; Sezer, Metin; Yavuz, Musa; Ozkan, Mehmet
The aim of this study was to evaluate the effect of supplemented bay laurel (Laurus nobilis L.) leaves to a conventional diet of laying Japanese quail on the performance and some egg quality. A total number of 60 and 54 days old laying type quails were distributed into individual cages for three different treatments. The control diet did not containLaurus nobilis (LN) leaves (LNG) and the other diets were supplemented with 2 g (LN2) and 4 g (LN4) leaves kg-1, respectively. The trial lasted for a total of 10 weeks. Supplemented leaves of LN (2 or 4 g kg-1 feed) had no effect on any performance parameters, external and internal egg quality traits of quails. The diets have not changed the amount of egg yolk total cholesterol at 121 days old. However, egg yolk triglyceride concentration of quails fed LN4 diet was lower (p<0.01) than quails fed with the other diets at 121 days old. Besides, the amount of total cholesterol and triglyceride of egg yolk increased (p<O.01) in all of the groups with age. In egg yolk in the group receiving diet LN4, the level of palmitic acid was lower (p<0.05) and oleic acid was higher (p<0.05) than those of the other 2 groups at 118 days. Besides at that age, the level of pahnitic acid was lower and oleic acid was >55, 76 and 97 days. There was no change in the other fatty acids. The changes in total saturated and total monounsaturated fatty acids were parallel with palmitic acid and oleic acid, respectively. Total polyunsaturated fatty acid content in the present study did not change with diet and age. The results of this study demonstrated that supplemented a conventional diet with LN could change some biochemical parameters of quail egg yolk.