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首页> 外文期刊>Revista Brasileira de Ciência Avícola >Requirement of Digestible Sulfur Amino Acids in Laying Hens Fed Sorghum- and Soybean Meal-Based Diets
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Requirement of Digestible Sulfur Amino Acids in Laying Hens Fed Sorghum- and Soybean Meal-Based Diets

机译：饮料硫氨基酸在饲养母鸡饲喂高粱和大豆膳食饮食中的需求

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Two experiments were done to evaluate the effect of increasing levels of dietary digestible methionine (Met) and Met:cysteine (Met:Cys) ratio on the productivity of Hy-Line W-36 laying hens fed sorghum- and soybean meal-based diets. In Exp. 1, 160 hens from 68 to 75 weeks of age were assigned to four dietary levels of digestible Met (0.20 0.24, 0.28 and 0.32%). The digestible total sulfur amino acids:Lysine (TSAA:Lys) ratios were: 62, 68, 76 and 84%. In Exp. 2, 192 hens from 76-83 weeks of age were assigned to four dietary digestible Met:Cys ratios (160, 116.7, 85.7 and 62.5%). The digestible TSAA:Lys ratio was kept constant across diets (80%). Results were subjected to ANOVA and linear regression analyses. In Exp. 1, optimal egg production, egg mass, and feed efficiency responses were observed at 0.30 and 0.50% of dietary digestible Met and TSAA, respectively (quadratic effect, p<0.05). Live performance was maximized with digestible Met and TSAA in takes of 288 and 478 mg/hen/d, respectively. In Exp. 2, optimal egg production and feed efficiency responses were observed at 151 and 150% of dietary digestible Met:Cys ratios, respectively (quadratic effect, p<0.05). The digestible Met, Cys and TSAA intake to maximize egg production and feed efficiency were 313, 207 and 510 mg/hen/d, respectively. The requirements for sulfur AA in Hy-Line W-36 hens from 68 to 83 weeks of age fed sorghum- and soybean meal-based diets fell inside the range of the requirements previously estimated in hens fed corn-soybean meal based diets.
机译：完成了两项实验以评估饮食消化蛋氨酸水平（MET）和满足水平的效果：半胱氨酸（MET：Cys）比对Hy-Line W-36饮食高粱和大豆膳食的饮食的生产率的比例。在exp。 1,160母鸡从68至75周的年龄分配到四种饮食水平（0.20 0.24,0.28和0.32％）。可消化的总硫氨基酸：赖氨酸（TSAA：Lys）比率为：62,68,76和84％。在exp。 2,192年龄的母鸡从76-83周龄的年龄分配到四个饮食消化MET：CYS比率（160,116.7,85.7和62.5％）。可消化的TSAA：Lys比在饮食中保持恒定（80％）。结果进行ANOVA和线性回归分析。在exp。 1，在0.30和0.50％的膳食消化符合SAT和TSAA（二次效果，P <0.05）中观察到最佳鸡蛋产量，蛋产和饲料效率应答。实时性能最大化，可消化的遇见和TSAA，分别为288和478毫克/毫克/天。在exp。 2，在151和150％的膳食消化符号中观察到最佳卵产量和饲料效率应答：Cys比例（二次效果，P <0.05）。可消化的遇见，CYS和TSAA摄入量，以最大化鸡蛋生产和饲料效率分别为313,207和510 mg / d。 Hy-Line W-36母鸡中硫磺AA的要求从68至83周龄喂养的高粱和大豆膳食的饮食中的68岁以下的饮食范围内下降了母鸡喂养玉米膳食的饮食的要求。

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