In this study, it was aimed to investigate the effects of red lighting on blood and milk melatonin levels, and milk quality. The experiment was carried out on 6 lactating Holstein Dairy cows, which were being reared at the Hümeyra Özgen Research and Application Farm, affiliated to Selcuk University Faculty of Veterinary Medicine. After a control period of 15 days in which night lighting was not applied (control group), night lighting was provided by LED bulbs emitting red light with a wavelength of 652 nm during the following 15-day trial period (experimental group). On days 5th, 10th and 15th days of the control and experimental groups, milk and blood samples were taken at the 06:00 am and at 06:00 pm.Serum and milk melatonin concentrations in the morning of the control, on days 5th, 10th and 15th; were 8.64±1.4, 7.02±0.97, 8.71±2.3, and 5.01±0.92, 5.23±0.35 , 3.93±0.81pg/ml, respectively while control evening group were respectively 8.59±1.8,7.53±2.14,8.35±0.94, 6.91±1.73, 6.8±1.27. It was obtained as 3.67±0.97 pg/ml. Serum and milk melatonin levels in the trial morning group were 10.93±2.06, respectively, on the same days; 15.37±2.6; 11.25±1.71 and 2.97±0.64; 5.7±1.06; While it was measured as 3.33±0.73 pg/ml, it was 14.83±3.11 in the trial evening group; 14.5±3.57; 12.95±4.09 and 4.42±0.61; 2.51±0.56; It was obtained as 2.48±0.79 pg/ml.It was observed that serum and milk melatonin levels and milk parameters were not adversely affected in the use of red LED lamps (652 nm) at night for 12h.

Amaç: Bu çalışmada kahverengi ve sarı tüy renkli Japon bıldırcınlarında büyüme eğrisi parametrelerinin tahmini ve en uyumlu modelin tespit edilmesi amaçlanmıştır. Gereç ve Yöntem: Araştırma materyali olarak 80 adet kahverengi ve 80 adet sarı tüy renkli Japon bıldırcını kullanılmıştır. Bıldırcınlar 0, 7, 14, 21, 28, 35 ve 42 günlük yaşlarda tartılmıştır. Büyüme eğrilerini belirlemek için Gompertz, Logistic, Von Bertalanffy ve Richards modelleri kullanılmıştır. Bulgular: Uyum iyiliği açısından Gompertz modeli kahverengi ve sarı tüy renkli Japon bıldırcınları için en iyi model olarak tespit edilmiştir. Belirleme katsayısı (R2), düzeltilmiş belirleme katsayısı (R2adj), Akaike Bilgi Kriteri (AIC), Bayesian Bilgi kriteri (BIC) ve hata kareler ortalaması (HKO) kahverengi ve sarı tüy renkli bıldırcınlarda sırasıyla 0,9968; 0,9952; 24,8801; 24,7179 ve 25,9657; 0,9975; 0,9963; 22,9149; 22,7527 ve 19,6099 olarak tespit edilmiştir. Modele ait β0, β1 veβ2 parametreleri kahverengi ve sarı tüy renkli bıldırcınlar için sırasıyla 234,89; 3,630; 0,072 & 236,58; 3,516 ve 0,069 bulunmuştur. Bükülme noktası yaşı ve bükülme noktasındaki canlı ağırlık ise sırasıyla 17,91 gün ve 86,41 g; 18,15 gün ve 87,03 g olarak hesaplanmıştır. Öneri: Sonuç olarak, bu çalışmada hem kahverengi hem de sarı tüy renkli Japon bıldırcınlarında Gompertz modeli en iyi model olarak belirlenmiştir. Farklı tüy renklerindeki Japon bıldırcınlarının büyüme eğrisi özelliklerinin belirlenmesinde sonraki araştırmalarda kullanılması önerilebilir. Öte yandan, Japon bıldırcınlarının bir alt türü olan Jumbo bıldırcın yetiştiriciliği, kahverengi tüy renkli Japon bıldırcınlarının yanı sıra yüksek erginleşme indeksi nedeniyle bıldırcın eti üretiminde dikkate alınmalıdır.

In the recent years, proper animal welfare practices in dairy farming have become an urgent topic to investigate in the animal sciences fields. Practices made in accordance with the five principles of freedom (hunger, thirst, well-being etc.), which are important for animal welfare, will improve the levels of animal welfare and the level of product (milk yield, fertility etc.) quality. There is a multitude of technologies to be selected to achieve proper animal welfare practices. One of the most complex and newest technologies is nanotechnology. Nanotechnology is used in many different fields such as nanomaterials, nano-bio system, nanomedicine, nano mineral, nanoimaging, nanoencapsulation, nano lubricants, nanocoating, nano paint, nano insulation, etc. Since animal welfare practices in dairy cattle affect yield, research have been carried out to improve animal welfare nowadays. But the limited information available on the use of nanotechnology as an alternative approach to improve animal welfare has made this research necessary. The purpose of this review is to shed light on further research in this area, and to better understand and select useable nanotechnologies for dairy cattle to improve animal welfare.

This study examined the hatchability performance of the offspring and some egg quality characteristics, which will be obtained from crossing Leghorn breed chickens and five different genotypes. The study's experiment was carried out in the XXXX . In the present study, which was designed to have one male and twelve females belonging to each genotype, a total of 200 eggs from each flock were examined. No adverse results were found in the incubation results of the crosses made with our local breed Denizli and Araucana, Brahma, and Cornish breeds, whose breeders increased locally. When egg quality characteristics were examined, the difference in egg weight between F1 genotypes was insignificant and ranged between 46.91-51.54 g on average. When the F2 generation was investigated, egg weight differed between genotype groups, and the average weights ranged between 57.6-67.14 g. In addition, the effect of genotype on strength, bark thickness, and point blunt up shell thickness values was significant. However, the effect on the Haugh Unit and yellow height were insignificant in the same generation. As a result, hybridizing genotypes with low yield performance with commercially important genotypes could provide a genotype for alternative production systems for future generations.

The aim of this study was to investigate the effect of different age and plumage color on the egg quality traits and cholesterol levels, in addition to which traits can be used for egg weight prediction in Japanese quails. The eggs obtained from 23-week-old original plumage colored Japanese and Jumbo quails, and 39-week-old Jumbo quails; 40, 40, and 20 eggs were used respectively as the research material. The eggs obtained from 23-week-old original plumage colored Japanese and Jumbo quails, and 39-week-old Jumbo quails; 40, 40, and 20 eggs were used respectively as the research material. In terms of plumage color difference, when Japanese quails were compared to Jumbo quails; yolk weight, yolk height, yolk diameter were higher, and likewise the cholesterol level was lower (P<0.01). The lowest cholesterol content was found in eggs from 23-week-old Japanese quail (P<0.01). Egg width, shape index, yolk height, and shell weight in group 1; albumen weight, yolk diameter, and egg volume in group 2; egg volume and egg length data in group 3 have determined the best fit for estimation of the egg weight. As a result, the plumage color is a factor that affected the egg quality traits and cholesterol level in quails. Furthermore, some egg quality traits may be used to establish the equations for estimation of the egg weight. Keywords: Age; Egg quality traits; Egg weight estimation; Plumage color; Quail

In this study, the external quality characteristics of eggs belonging to Linda accidents, a poultry species, were investigated with a data mining approach. The 288 Linda goose eggs used in the study were 36 weeks old; Their width was 52.34 mm, egg length was 76.8 mm, egg weight was 120.43 g, and shape index value was 68.26. Eggs were clustered according to shape index and weight measurements using the K-means clustering algorithm, a data mining approach. Statistically significant differences were found between the clusters in width, height, shape index, and weight (p<0.05). The findings of our study showed that eggs with a low index had high- weight; eggs with a high index were low-weight eggs. According to the results of this study, it was concluded that the shape index value might be related to egg weight. More detailed inferences can be made using data mining algorithms for different poultry species.