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引用次数: 0
摘要
本研究旨在探讨琉璃苣提取物（BE）对高饲养密度下肉鸡生长性能和免疫系统的影响。总共 330 只雄性罗斯 308 肉鸡被分配在一个完全随机设计的六个试验处理中，每个处理有三次重复。处理为：T1：10只/平方米（阳性对照组）；T2：20只/平方米（阴性对照组）；T3：20只/平方米+150毫克/升琉璃苣提取物（BE）；T4：20只/平方米+300毫克/升BE；T5：20只/平方米+450毫克/升BE；T6：20只/平方米+600毫克/升BE。每周测定增重、采食量和饲料转化率（FCR），并两次检测免疫反应。使用 BE 可提高高饲养密度下肉鸡的增重、采食量和饲料转化率。BE能改善肉鸡的免疫反应。结果表明，使用 600 毫克/升的 BE 有助于降低密度应激的影响。因此，BE 可作为一种营养策略，用于提高肉鸡在应激条件下的生产性能。
The Effect of Borage (Borago officinalis) Extract on Growth Performance and Immune System of Broilers at High-Density Conditions.
The present study was conducted to investigate the effects of borage extract (BE) on growth performance and the immune system of broilers at high-stocking-density. A total of 330 male Ross 308 broilers were distributed in a completely randomized design with six experimental treatments each with three replications. Treatments were T1: 10 broilers/m2 (positive control group), T2: 20 broilers/m2 (negative control group), T3: 20 broilers/m2 + 150 mg/l of borage extract (BE), T4: 20 broilers/m2 + 300 mg/l of BE, T5: 20 broilers/m2 + 450 mg/l of BE, and T6: 20 broilers/m2 + 600 mg/l of BE. Weight gain, feed intake, and feed conversion ratio (FCR) were measured weekly and immune responce were examined twice. The use of BE could improve weight gain, feed intake, and FCR in broilers reared at a high-stocking-density. BE treatment improved the immune response of broilers. According to the results, the use of BE at 600 mg/l is useful in reducing the effects of density stress. Therefore, BE can be used as a nutritional strategy to improve the bird performance in stressful conditions.
期刊介绍：
Journal of Applied Animal Welfare Science (JAAWS) publishes articles on methods of experimentation, husbandry, and care that demonstrably enhance the welfare of nonhuman animals in various settings. For administrative purposes, manuscripts are categorized into the following four content areas: welfare issues arising in laboratory, farm, companion animal, and wildlife/zoo settings. Manuscripts of up to 7,000 words are accepted that present new empirical data or a reevaluation of available data, conceptual or theoretical analysis, or demonstrations relating to some issue of animal welfare science. JAAWS also publishes brief research reports of up to 3,500 words that consist of (1) pilot studies, (2) descriptions of innovative practices, (3) studies of interest to a particular region, or (4) studies done by scholars who are new to the field or new to academic publishing. In addition, JAAWS publishes book reviews and literature reviews by invitation only.
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