Abstract This study was to investigate physicochemical characteristics, fatty acids, minerals and hematological alterations in broiler chickens artificially infected with 1 × 104 sporulated oocysts of Eimeria tenella. Results revealed that pH values were decreased (p ˂ .05) in the infected group (IG) at 7 and 9 days post infection (dpi) than those at 5 dpi, although no significant differences between the non-infected group (NIG) and IG. Infection with E. tenella did not affect meat colour parameters except that redness was lower (p ˂ .05) than that in the NIG. Cooking loss was decreased (p ˂ .05) in NIG and IG at 7 and 9 dpi than that at 5 dpi. Thiobarbituric acid reactive substance (TBARS) value was increased (p ˂ .05) in IG at 7 dpi than 5 or 9 dpi and NIG (p ˂ .01). Total protein (TP) and total cholesterol (TC) were significantly lowered in IG at 5 dpi. Other blood parameter results showed decreases of glucose (GLU), triglyceride (TG), high-density lipoprotein (HDL), low-density lipoprotein (LDL) in infected chicken at 7 dpi compared to those in the NIG without significance. However, albumin (ALB) level was decreased (p ˂ .01) in the IG compared with NIG at 5 dpi. Levels of aspartate aminotransferase (AST) were lowered (p < .05) in the IG than NIG at 7 dpi. Mineral contents of Ca, Mg, Cu, and Zn were lowered (p ˂ .01) in the IG than those in the NIG at 7 dpi. Based on these results indicate that a low dose of E. tenella has no impact on meat quality traits, fatty acids although it can slightly affect blood parameters and mineral contents. HIGHLIGHTS The low dose of Eimeria tenella has no impact on meat quality traits and fatty acids of broiler meat. A significant increase in some blood parameter is observed in infected broiler chickens at 9 dpi. Mineral contents of Ca, Mg, Cu and Zn decreases in infected broiler meat at 7 dpi.

中文翻译：

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肉鸡人工感染孢子化艾美球虫卵囊后肉鸡品质性状、脂肪酸、矿物质含量及血液代谢产物的变化

摘要 本研究旨在研究人工感染1×104个艾美球虫孢子化卵囊的肉鸡的理化特性、脂肪酸、矿物质和血液学变化。结果显示，感染组 (IG) 在感染后 (dpi) 的第 7 天和第 9 天的 pH 值比感染后第 5 天的 pH 值降低 (p˂ .05)，但未感染组 (NIG) 和IG。E. tenella 感染不影响肉的颜色参数，只是发红程度低于 NIG（p ˂ .05）。与 5 dpi 相比，在 7 dpi 和 9 dpi 时，NIG 和 IG 的蒸煮损失降低 (p ˂ .05)。7 dpi 的 IG 中硫代巴比妥酸反应性物质 (TBARS) 值比 5 或 9 dpi 和 NIG (p ˂ .01) 增加 (p ˂ .05)。5 dpi 时，IG 中的总蛋白 (TP) 和总胆固醇 (TC) 显着降低。其他血液参数结果显示，感染鸡 7 dpi 的葡萄糖 (GLU)、甘油三酯 (TG)、高密度脂蛋白 (HDL)、低密度脂蛋白 (LDL) 与 NIG 中的相比降低，没有显着意义。然而，与 5 dpi 的 NIG 相比，IG 中的白蛋白 (ALB) 水平降低 (p ˂ .01)。在 7 dpi 时，IG 中的天冬氨酸转氨酶 (AST) 水平低于 NIG (p < .05)。在 7 dpi 时，IG 中 Ca、Mg、Cu 和 Zn 的矿物质含量低于 NIG 中的 (p ˂ .01)。基于这些结果表明，低剂量的 E. tenella 对肉质性状和脂肪酸没有影响，尽管它会轻微影响血液参数和矿物质含量。亮点 低剂量的艾美球虫对肉鸡的肉质性状和脂肪酸没有影响。在感染后 9 dpi 的肉鸡中观察到一些血液参数的显着增加。在 7 dpi 感染的肉鸡中，Ca、Mg、Cu 和 Zn 的矿物质含量降低。