Abstract

This study aimed to determine the impact of in ovo Astragalus kahericus polysaccharide (AKP) injections on performance, carcass weights, and blood constituents in Cobb chicks. Un-sexed 1 day broiler chicks (250) were divided into five treatment groups with five replicates of 10 chicks per group. The groups were as follows: (1) negative control (without additive), (2) positive control (saline injection), (3) 1.5 mg AKP, (4) 3.0 mg AKP, and (5) 4.5 mg in ovo AKP injections. Apart from the control groups, no significant changes in body weight at 3 and 5 weeks of age, and daily weight gains during 0–3 weeks of age were detected among the treatment groups. Daily feed consumption was decreased in AKP groups, while feed conversion ratio was improved with AKP when compared to the PC. AKP injections significantly altered the lipid profile parameters, including total cholesterol, triglycerides, low-density lipoproteins, and very low-density lipoproteins in the plasma (p < 0.05); but there were no statistical differences in HDL (p > 0.001). AKP injections significantly impacted biochemical blood parameters, including total protein, albumin, and globulin, in broiler chicken plasma (p < 0.05). Liver and kidney functions were influenced by in ovo AKP injections in broilers. Antioxidant enzymes also changed significantly after in ovo injection with AKP. Moreover, in ovo injection of AKP significantly altered immunity (IgG and IgM) in broilers. In conclusion, in ovo injection of AKP significantly improved liver and kidney functions, antioxidant activity, and immune function in broilers.

摘要

本研究旨在确定卵内注射黄芪多糖 (AKP) 对 Cobb 雏鸡生产性能、胴体重量和血液成分的影响。未性别化的 1 日龄肉鸡 (250) 被分成五个处理组，每组 10 只小鸡重复 5 次。分组如下：(1) 阴性对照（无添加剂），(2) 阳性对照（生理盐水注射），(3) 1.5 mg AKP，(4) 3.0 mg AKP，和 (5) 4.5 mg in ovoAKP注射。除对照组外，在治疗组中未检测到 3 周龄和 5 周龄体重的显着变化以及 0-3 周龄期间的每日体重增加。与 PC 相比，AKP 组的每日饲料消耗量减少，而 AKP 组的饲料转化率有所提高。AKP 注射显着改变了脂质参数，包括血浆中的总胆固醇、甘油三酯、低密度脂蛋白和极低密度脂蛋白 ( p  < 0.05)；但 HDL 无统计学差异 ( p  > 0.001)。AKP 注射显着影响肉鸡血浆中的生化血液参数，包括总蛋白、白蛋白和球蛋白（p < 0.05)。肉鸡卵内注射 AKP会影响肝脏和肾脏功能。卵内注射 AKP后，抗氧化酶也发生了显着变化。此外，卵内注射 AKP 显着改变了肉鸡的免疫力（IgG 和 IgM）。总之，蛋内注射AKP显着改善了肉鸡的肝肾功能、抗氧化活性和免疫功能。