Effects of dietary chromium picolinate supplementation on egg production, egg quality and serum concentrations of insulin, corticosterone, and some metabolites of Japanese quails
| Autor: | Orhan Özbey, Kazim Sahin, Osman Küçük, Nurhan Sahin |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
medicine.medical_specialty
Nutrition and Dietetics food.ingredient Cholesterol Endocrinology Diabetes and Metabolism Insulin medicine.medical_treatment Dietary Chromium chemistry.chemical_element Biology Micronutrient Feed conversion ratio chemistry.chemical_compound Chromium Endocrinology Animal science food chemistry Internal medicine Yolk medicine Eggshell |
| Zdroj: | Nutrition Research. 21:1315-1321 |
| ISSN: | 0271-5317 |
| DOI: | 10.1016/s0271-5317(01)00330-x |
| Popis: | The effect of chromium (chromium picolinate, CrPic) supplementation on egg production, egg quality and serum concentrations of insulin, corticosterone and some metabolites of Japanese quails (Coturnix coturnix japanica) was evaluated. One hundred and fifty laying Japanese quails (45-d-old) were divided into five groups, 30 birds per group. The quails were fed either a control diet containing 1285.96 μg chromium (Cr)/kg of diet or the control diet supplemented with either 200 μg of Cr/kg of diet, 400 μg of Cr/kg of diet, 800 μg of Cr/kg of diet or 1200 μg of Cr/kg of diet. Increased supplemental chromium resulted in an increase in body weight ( P = 0.05, linear), feed intake ( P = 0.05, linear), egg production ( P = 0.01, linear), and also improved feed efficiency ( P = 0.01, linear). Increased supplemental chromium decreased ( P = 0.05, linear) egg shape index, whereas linearly increased egg weight ( P = 0.01), eggshell weight ( P = 0.01), eggshell thickness ( P = 0.01), albumen index ( P = 0.01), albumen weight ( P = 0.05), yolk index ( P = 0.05),yolk weight ( P = 0.01), and egg specific gravity ( P = 0.05). Serum insulin concentration linearly increased ( P = 0.01), whereas corticosterone concentration linearly decreased ( P = 0.05) as dietary chromium supplementation increased. Serum glucose and cholesterol concentrations decreased ( P = 0.01), while protein concentrations increased linearly ( P = 0.001) with higher dietary chromium supplementation. The results of the present study show that chromium supplementation, particularly at 1200 ppb, increases the performance, egg quality, and serum insulin concentrations of Japanese quails. |
| Databáze: | OpenAIRE |
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