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Bu araştırmada, damızlık yumurta tavuğu rasyonlarına farklı formda organik ve inorganik çinko ilavesinin kuluçka özellikleri ve civciv kalitesi üzerine etkileri araştırılmıştır. Araştırma Ankara Tavukçuluk Araştırma Enstitüsü’nde yürütülmüş ve araştırmanın hayvan materyalini, toplam 216 adet Barred Rock tavuğu ile 18 adet Rhode Island Red horozu, yumurtacı hattı oluşturmuştur. Denemeye 48 haftalık yaşta başlanmış ve 16 hafta sürdürülmüştür. Rasyona farklı formda organik veya inorganik çinko ilavesi yapılarak 6 deneme grubu oluşturulmuştur. Kontrol ve deneme grupları rasyonları ortalama % 17 ham protein ve 2800 kcal/kg metabolik enerji içerecek şekilde düzenlenmiştir. Kontrol grubu çinko içermeyen mineral karması ile hazırlanmıştır. Çinko içermeyen gruba ek olarak, birinci gruba 60 mg/kg Çinko-Avila, ikinci gruba ZnSO4, üçüncü gruba ÇinkoRedoxMin, dördüncü gruba ZnO, beşinci gruba ZnClkatılmıştır. Araştırma rasyonuna farklı formda 60 mg/kg çinko ilavesinin yumurtadan çıkış gücü, döllülük oranı ve ölüm oranını etkilemediği, 60 mg/kg ZnRedoxMin‘in civciv kalitesi ve ağırlığını iyileştirdiği (P, In the study, the effects of different forms of organic and inorganic zinc minerals supplemented to rations of breeding laying hens were investigated on hatching traits and chick quality. The study was conducted in Ankara Poultry Research Institute and laying line was composed of 216 Barred Rock hens with 18 Rhode Island Red roosters. The study initiated with 48 weeks of age hens and continued for 16 weeks. Totally 6 experimental group was formed by adding different forms of organic or inorganic zinc minerals in rations. The control and experimental group rations were composed of 17% crude protein and 2800 kcal/kg metabolizable energy. The control group rations were prepared by using zinc-free mineral mix. In addition to non-zinc group, the first, second, third, fourth and fifth groups

KAYA, ISMAIL/0000-0002-2570-0877 WOS: 000333080600015 This study examined the estimation of the Dry-Matter Intake (DMIe) and Digestibility (DMDe) and the utilization of the pasture by grazing cattle in different seasons of the Kars region by using alkane indicator technique. Two experiments were carried out, and in the first experiment, 5 male cattle (mean LW. 244.5 +/- 2.3 kg) were used for 20 days. In first experiment, the precision and reliability of alkane indicator technique were determined by comparing the real Dry Matter Intake (DMI) and Dry Matter Digestibility (DMD) which was obtained by the controlled indoor study with DMIe and DMDe estimated by using alkane indicators. The second experiment was conducted with the pasturing cattle in meadow in 5 terms each lasted 20 days. Ten male cattle (mean LW. 164.9 +/- 1.5 kg) were divided in two groups, and different animals were used in each term. The best result for DMIe was obtained by using the alkanes C-33:C-32 couples in mixed (collected in 24 h) samples in indoor study (R-2:0.86). DMDe's calculated by using alkanes C-32 and C-33 were similar to the real DMD, whereas the DMDe's with alkane C-36 were underestimated (P

WOS: 000254709600010 The aim of this study was to determine the effect of vitamin A supplementation on performance, liver and spleen weights, and tibia ash of broilers. A total of 84 one-day-old Ross 308 broiler chicks were randomly assigned to 12 pens each containing seven chicks (4 male, 3 female). Each treatment has 4 replicates. The experiment was conducted with one control and two treatment groups. The chicks in control group were fed a diet without aflatoxin supplementation while the chicks in aflatoxin and aflatoxin+vitamin A groups were fed with the diets 2.5 ppm aflatoxin, and 2.5 ppm aflatoxin + 3866.66 IU vitamin A/kg feed, respectively. The experiment lasted 21 days. In this study, body weight of chicks in aflatoxin and aflatoxin+vitamin A groups were significantly lower (p