نتایج جستجو برای: leghorn

تعداد نتایج: 1677  

Journal: :Indian Journal of Animal Sciences 2023

To understand the optimal requirement of d.lysine and threonine in White Leghorn (WL) layers (25-44 weeks), two independent experiments were executed. For d. lysine study, birds (N=528) categorized into eleven dietary groups (11×6×8) fed with different protein levels (13.36 15.78%) each containing five concentrations Lys. optimize Thr, (N=390) allotted to thirteen (13×5×6) these diets formulate...

Journal: :Veterinarski Arhiv 2021

The aim of this study was to investigate beak surface temperature changes stress induced by fear resulting from tonic immobility using infrared thermography in laying hens. It also examined whether temperatures differed among brown and white lines. based on 89 hens both lines: 45 White Leghorn birds 44 Hy-Line birds. Beak measured with immediately before after testing. average obtained the uppe...

Journal: :پژوهش های علوم دامی ایران 0
اکبر زمانی حمید رحمانی جواد پور رضا

this experiment was carried out to study the effect of manganese in four levels (30, 60, 90 and 120 mg/kg) and zinc in four levels (50, 100, 150 and 200 mg/kg) on shells with translucent areas, haugh unit, mortality, percentage of ash in eggshell and composition of eggshell in laying hens, in a completely randomized design and in a 4×4 (16 treatment) factorial arrangement, three hundred and twe...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید