野生和圈养大草原鸡肝脏脂肪酸、矿物质和脂溶性营养素

IF 0.9 4区 环境科学与生态学 Q4 BIODIVERSITY CONSERVATION
E. Dierenfeld, Lena C. Larsson, Aaron C. Pratt, S. Sherrod
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引用次数: 0

摘要

我们测量了大草原鸡(Tympanuchus cupido pinnatus)肝脏组织中的脂肪酸、矿物质和脂溶性营养素,并研究了圈养(未放养的圈养鸡n = 4)、野生(n = 12)和组合(放养的圈养鸡n = 5)的差异。总的来说,我们发现,与未放生的圈养鸟类或野生鸟类相比,放生的圈养鸟类样本中所有脂肪酸的差异更大。多不饱和脂肪酸在圈养鸟类中最低。在矿物质方面,放生的圈养鸟的肝脏钠值较低,放生和未放生的圈养鸟的铜和锰浓度均较低。在被评估的类胡萝卜素中,与野生草原鸡相比,人工饲养的鸟类肝脏中的β-胡萝卜素含量较低。圈养但未放生的鸟类肝脏中的玉米黄质含量最低。三个研究组之间肝脏营养物质浓度的差异可能与膳食成分直接相关。研究结果表明,在未来的放养计划中,可能采取的改善草原鸡营养的管理措施包括:进一步提高圈养商业饲粮中微量矿物质和β-胡萝卜素的含量,在放养方案中添加添加饲料,包括提高多不饱和脂肪酸含量,提高β-胡萝卜素含量的绿色植物材料,在放养地点提供微量矿化盐源。释放的时间与自然资源高可用性的时期相吻合,以更好地复制养分多样性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Liver Fatty Acid, Mineral and Fat-Soluble Nutrients in Wild and Captive Greater Prairie-Chickens
We measured fatty acids, minerals, and fat-soluble nutrients in liver tissues from greater prairie-chickens Tympanuchus cupido pinnatus as an ecological dietary surrogate for endangered Attwater’s prairie-chickens T. c. attwateri, and investigated differences associated with captive (non-released captive-raised n = 4), wild (n = 12), and combination (released captive-raised n = 5) diets. In general, we found more variability across all fatty acids in samples from released captive-raised birds compared with either non-released captive-raised or wild birds. Polyunsaturated fatty acids were lowest in captive-raised birds. Regarding minerals, liver sodium values were uniquely lower in released captive-raised birds, and copper and manganese concentrations were lower for both released and non-released captive-raised birds. Of the carotenoids evaluated, β-carotene was lower in livers from captive-raised birds compared with wild prairie-chickens. Zeaxanthin was lowest in livers from birds that were captive-raised but non-released. Differences in hepatic nutrient concentration among the three study groups may be directly correlated with dietary ingredients. Results suggest possible management actions for improved nutrition of prairie-chickens in future release programs such as further refinement of trace mineral and β-carotene content of captive commercial diets, the addition of supplemental feeds in release protocols that include an elevated polyunsaturated fatty acid profile, green plant materials that elevate β-carotene content, provision of trace mineralized salt sources at release sites, and timing releases to coincide with periods of high natural resource availability to better duplicate nutrient diversity.
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来源期刊
Journal of Fish and Wildlife Management
Journal of Fish and Wildlife Management BIODIVERSITY CONSERVATION-ECOLOGY
CiteScore
1.60
自引率
0.00%
发文量
43
审稿时长
>12 weeks
期刊介绍: Journal of Fish and Wildlife Management encourages submission of original, high quality, English-language scientific papers on the practical application and integration of science to conservation and management of native North American fish, wildlife, plants and their habitats in the following categories: Articles, Notes, Surveys and Issues and Perspectives. Papers that do not relate directly to native North American fish, wildlife plants or their habitats may be considered if they highlight species that are closely related to, or conservation issues that are germane to, those in North America.
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