Propolis is a sticky resin produced by worker honeybees from substances collected from plants, and it has strong antibacterial and antifungal properties. The purpose of this study was to establish the effects of propolis on egg weight loss, hatchability, chick performance, and to control microbial activity naturally occurring on eggshells. A total of 750 fresh eggs was randomly divided into 5 groups. Eggs from the first group were sprayed with ethyl alcohol (70%, A), the second group was sprayed with benzalkonium chloride (B), and the third, fourth, and fifth groups were sprayed with propolis at 3 doses: 5, 10, and 15%. Eggs sprayed with propolis had lower egg weight loss than eggs from groups A and B (P < 0.001). Bacterial activity was reduced significantly in all propolis groups. There were no significant differences between treatments for hatchability, embryonic mortality, BW gain, and relative growth. Results of the present study indicated that propolis could be an alternative hatching egg disinfectant versus a chemical disinfectant, without adverse effects on hatchability and performance of quail chicks.
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.
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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