Estimation of Thiamine Requirement for Optimum Hatchability from the Relationship Between Dietary and Yolk Levels of the Vitamin
| Autor: | Donald Polin, Walther H. Ott, Curt C. Porter, Elizabeth R. Wynosky |
|---|---|
| Rok vydání: | 1963 |
| Předmět: |
Vitamin
animal structures food.ingredient Hatching media_common.quotation_subject food and beverages Embryo Appetite General Medicine Biology chemistry.chemical_compound food chemistry Amprolium Yolk embryonic structures Animal Science and Zoology Thiamine Food science human activities Incubation media_common |
| Zdroj: | Poultry Science. 42:925-928 |
| ISSN: | 0032-5791 |
| DOI: | 10.3382/ps.0420925 |
| Popis: | THE requirement for thiamine for chick growth is well established and quantitated, but the vitamin requirement in hens’ rations for embryo development has not been determined. The vitamin was qualitatively shown necessary for embryo viability when Ellis et al. (1933) fed hens a ration marginal in thiamine and found chicks dying from polyneuritis soon after hatch. Recently, Polin et al. (1962a) added 0.10% or more of amprolium, a weak anti-metabolite of thiamine, to a commercial breeder ration and produced a thiamine deficiency in egg yolks. Associated with the low yolk thiamine values were a peak embryo mortality during the late stage of incubation and numbers of weak and dead chicks in the hatching trays. Additional studies subsequently revealed that the minimum thiamine level in the yolk for optimum hatch was approximately 0.63 p.p.m. (Polin et al., 1962b). The present study was undertaken to determine the relationship between thiamine levels in… |
| Databáze: | OpenAIRE |
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