Kheiri Farshid, Faghani Mostafa, Landy Nasir
Department of Animal Science, Shahrekord Branch, Islamic Azad University, Shahrekord 8813733395, Iran.
Young Researchers and Elite Club, Khorasgan Branch, Islamic Azad University, Isfahan 8155139999, Iran.
Anim Nutr. 2018 Mar;4(1):79-83. doi: 10.1016/j.aninu.2017.09.002. Epub 2017 Sep 18.
The present study was to evaluate thyme and ajwain as antibiotic growth promoter substitutions on growth performance, carcass characteristics and serum biochemistry in Japanese quails (). A feeding trial was conducted over 28 d with 4 groups of Japanese quails fed experimental diets formulated to provide no supplementation (control), or control + 55 mg zinc bacitracin/kg, 2 g thyme/kg, and 2 g ajwain/kg. At 35 d of age, 2 quails from each replicate were sacrificed and eviscerated. Liver, empty small intestine and heart were weighed and calculated as a percentage of live body weight. The carcasses were weighed and the cuts were performed to evaluate the yield of legs and breast. At 35 d of age, 2 quails per replicate were chosen and approximately 1-mL blood samples were collected through brachial vein, and concentrations of albumin, total protein, triglyceride, total cholesterol, and high density lipoprotein (HDL) -cholesterol were determined. Final body weight were not affected by the dietary treatment whereas, it tended to increase in quails supplemented with antibiotic. Overall feed conversation ratio values were similar though it tended to improve in quails supplemented with thyme compared with other groups. Daily feed intake, internal organ weights and carcass traits were not influenced by the dietary treatments. Serum total cholesterol contents were lower ( < 0.05) in quails supplemented with ajwain compared with control and quails supplemented with antibiotic and thyme. The highest serum HDL-cholesterol was seen in the group supplemented with thyme compared with other groups. It was concluded that the addition of 2 g/kg thyme can improve serum biochemistry in quails, although its effects on performance criteria was negligible.
本研究旨在评估百里香和阿育吠陀种子作为抗生素生长促进剂替代品对日本鹌鹑生长性能、胴体特性和血清生化指标的影响。进行了为期28天的饲养试验，将4组日本鹌鹑分别饲喂不添加任何物质的对照日粮（对照组），或对照日粮+55毫克杆菌肽锌/千克、2克百里香/千克和2克阿育吠陀种子/千克的试验日粮。在35日龄时，从每个重复组中选取2只鹌鹑进行屠宰并取出内脏。称取肝脏、空小肠和心脏的重量，并计算其占活体体重的百分比。称取胴体重量，并进行分割以评估腿部和胸部的产量。在35日龄时，每个重复组选取2只鹌鹑，通过肱静脉采集约1毫升血液样本，测定白蛋白、总蛋白、甘油三酯、总胆固醇和高密度脂蛋白（HDL）胆固醇的浓度。日粮处理对最终体重没有影响，不过，添加抗生素的鹌鹑体重有增加的趋势。尽管与其他组相比，添加百里香的鹌鹑的总体饲料转化率有改善的趋势，但各处理组的总体饲料转化率值相似。日粮处理对日采食量、内脏器官重量和胴体性状没有影响。与对照组、添加抗生素和百里香的鹌鹑相比，添加阿育吠陀种子的鹌鹑血清总胆固醇含量较低（P<0.05）。与其他组相比，添加百里香的组血清HDL胆固醇含量最高。得出的结论是，添加2克/千克百里香可改善鹌鹑的血清生化指标，尽管其对生产性能指标的影响可忽略不计。
