Abstract

The experiment aimed to determine the effect of substituting 50% of soy protein for lupin protein in feed mixtures intended for the nutrition of high-yield Isa Brown laying hens, on selected biochemical blood plasma indicators. The trial was designed as a long-lasting feeding experiment (51 weeks) and involved a total of 180 hens divided in three experimental groups (control group C and experimental groups WLS and WDLS). At the end of the laying cycle, blood samples were taken from the hens by puncture of the vena basilica and subsequently, the required blood plasma indicators were analysed in the laboratory. The results demonstrated that the long-term feeding of white lupin (variety Zulika) did not affect the molar concentration of plasma inorganic phosphorus (P), magnesium (Mg), sodium (Na), potassium (K), chloride (Cl), uric acid (UAC) and the activity of alanine aminotransferase (AST). By contrast, the substitution of soy protein for lupin protein in the diets of the experimental groups of laying hens led to the statistically significant (p ≤ .05) decrease of total plasma protein (TP), total cholesterol (Chol), calcium (Ca) and triacylglycerides (TAG) and to an increase (p ≤ .05) of alkaline phosphatase activity (ALP).

• Highlights

• Replacement of soya protein with white lupin protein reduced cholesterol and triacylglycerides in blood plasma

• Feedstuff including white lupin protein did not affect negatively the health status of the layers

摘要

该实验旨在确定在饲料混合物中用大豆蛋白中的50％的大豆蛋白代替羽扇豆蛋白的效果，这些混合物旨在为伊莎·布朗高产蛋鸡提供营养，对所选生化血浆指标的影响。该试验被设计为一个长期喂养实验（51周），涉及180只母鸡，分为三个实验组（对照组C和实验组WLS和WDLS）。在产蛋周期结束时，通过刺穿静脉大教堂从母鸡中采集血样，然后在实验室中分析所需的血浆指标。结果表明，长期食用白羽扇豆（品种Zulika）不会影响血浆无机磷（P），镁（Mg），钠（Na），钾（K），氯化物（Cl），尿酸（UAC）和丙氨酸氨基转移酶（AST）的活性。相比之下，在实验组蛋鸡的饮食中用大豆蛋白代替羽扇豆蛋白导致了统计学上的显着性（p  ≤0.05）血浆总蛋白（TP），总胆固醇（CHOL），钙（Ca）和三酰基甘油酯（TAG）和的增加（下降p 碱性磷酸酶活性（ALP）的≤0.05）。

• 强调

• 用白色羽扇豆蛋白代替大豆蛋白可降低血浆中的胆固醇和甘油三酯

• 包含白色羽扇豆蛋白的饲料不会对蛋鸡的健康状况产生负面影响