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首页> 外文期刊>Archivos Latinoamericanos de Produccion Animal >Nutritional value of yeast ( Saccharomyces cerevisiae ) and its derived products, extract and cell wall, in poultry feeding.
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Nutritional value of yeast ( Saccharomyces cerevisiae ) and its derived products, extract and cell wall, in poultry feeding.

机译：酵母（Saccharomyces cerevisiae）及其衍生产品，提取物和细胞壁在家禽饲养中的营养价值。

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摘要

To assess the nutritional value for poultry of brewer's yeast (Y) ( Saccharomyces cerevisiae ), and that of its derived products: extract (E) and cell wall (CW), after being submitted to a process of autolysis, a balance trial was conducted with 48 adult, cecectomized roosters of the Gold Line strain. True digestibility of dry matter (DMTD), of nitrogen corrected for uric acid (NuTD), and of amino acids (AATD); and true metabolizable energy corrected to zero nitrogen balance (TMEn) were determined. Total nitrogen content in Y, E and CW analyzed 8.4, 11.3, and 3.5 %, respectively. Balance trial results showed highly significant differences among the three feedstuffs evaluated, in favor of E, in almost all the criteria of evaluation. Mean values of Y, E, and CW for DMTD (%) were 45.7 ± 0.8, 59.7 ± 0.8, and 25.0 ± 1.1, respectively; those of Y and E were, for AATD (%), 75.,4 and 91.6; and for methionine digestibility (%), 86.2 and 98.9; but for cysteine digestibility (%), 67.3 and 63.2. Autolysis of the yeast increased the concentration of nutrients, in the extract and favored digestibilities of dry matter; total nitrogen; and aminoacids, except cysteine; it also increased the metabolizable energy value.
机译：为了评估啤酒酵母（Y）（Saccharomyces cerevisiae）及其衍生产品：提取物（E）和细胞壁（CW）的家禽的营养价值，将其置于自溶过程后，进行了平衡试验饲养了48只金线菌株成年的切除公鸡。干物质（DMTD），尿酸校正的氮（NuTD）和氨基酸（AATD）的真实消化率;确定了校正为零氮平衡（TMEn）的真实可代谢能量。 Y，E和CW中的总氮含量分别为8.4％，11.3％和3.5％。平衡试验结果显示，在几乎所有评估标准中，评估的三种饲料之间都存在着显着的差异，其中以E为佳。 DMTD的Y，E和CW平均值（％）分别为45.7±0.8、59.7±0.8和25.0±1.1;对于AATD（％），Y和E分别为75.，4和91.6;蛋氨酸消化率（％）为86.2和98.9;但对于半胱氨酸消化率（％），分别为67.3和63.2。酵母的自溶作用增加了提取物中营养物质的浓度，有利于干物质的消化。总氮和氨基酸，半胱氨酸除外;它也增加了可代谢的能量值。

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