ABSTRACT:This study was conducted to investigate the effects of garlic powder on the performance, egg traits, egg cholesterol and serum parameters of laying Japanese quails. One hundred and twenty 10-weeks-old quails were allocated to four dietary treatments. Quails were caged individually and fed diets supplemented with 0 (control), 1, 2, 4% garlic powder for 12 weeks. There were significant (P < 0.05) differences among the diets in feed consumption, feed efficiency and egg production as averaged over 12 weeks. The better values for these parameters were obtained from the 1% garlic powder supplemented group. Garlic powder addition did not significantly affect egg yolk index, egg shell weight and egg shell thickness. However, there were significant differences (P < 0.05) in egg albumen index, egg shell index and Haugh unit. There was a significant (P < 0.05) reduction in the egg yolk cholesterol concentration when the dietary level of garlic powder was increased from 0 to 4 g/kg. Plasma high density lipoprotein (HDL) cholesterol concentrations increased (P < 0.05) with increasing levels of dietary garlic powder. Plasma cholesterol (P < 0.05) and triglyceride (P < 0.05) concentration decreased with garlic powder supplementation. It was concluded that garlic powder in the diet of laying quails reduced the plasma and egg yolk cholesterol concentration.

We 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 4°C and 20°C for 0, 15, 30, and 45 days. Extension of the storage time to 45 days at 20°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.

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Bu çalışma, yumurtacı Japon bıldırcınlarının karma yemlerine organik ve inorganik selenyum (Se) katkısının yumurta verim parametreleri ile yumurta akı ve sarısının Se içeriğine etkilerini belirlemek amacıyla yapılmıştır. Denemede 10 haftalık yaşta 90 adet yumurtacı Japon bıldırcını (Coturnix coturnix Japonica) kullanılmıştır. Bıldırcınlar her birinde 18 hayvan bulunan 5 gruba ayrılmış ve tüm hayvanlar bireysel kafeslerde barındırılmıştır. Gruplardan biri Se katkısız bazal yemle (kontrol), ikinci grup bazal yeme + 0.2 mg/kg inorganik Se (sodyum selenit) ilaveli yemle, üç, dört ve beşinci gruplar bazal yeme sırasıyla 0.1, 0.2 ve 0.3 mg/kg organik Se ilaveli yemlerle 8 hafta süreyle beslenmişlerdir. Araştırma sonucunda, deneme sonu canlı ağırlığı, yem tüketimi, yemden yararlanma oranı, yumurta verimi ve yumurta ağırlığı bakımından gruplar arasında önemli bir farklılık olmadığı, ancak yumurta sarısı ve akındaki Se konsantrasyonunun inorganik ve organik Se ilave edilen gruplarda kontrole göre önemli derecede yüksek olduğu (P<0.001), organik Se ilavesinin inorganik Se ilavesine göre daha etkili olduğu tespit edilmiştir.

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-This 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 ºC and 36.84 and 37.18 ºC, respectively. Eggshell temperatures at the equatorial region on days 10 (36.89 ºC) and 14 (37.57 ºC) of embryonic development were lower than the fixed temperature of the incubator (37.6 ºC). 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.