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首页> 外文期刊>Rangifer >Overwinter changes in urea nitrogen:creatinine and cortisol:creatinine ratios in urine from Banks Island Peary caribou
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Overwinter changes in urea nitrogen:creatinine and cortisol:creatinine ratios in urine from Banks Island Peary caribou

机译：Banks Island Peary驯鹿尿液中尿素氮：肌酐和皮质醇：肌酐的比值变化

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Over 200 snow urine samples were collected from Banks Island Peary caribou between March 1993 and May 1998. Most (n = 146) samples were collected during 3 time periods in 5 successive years: early winter (3 November-3 December), mid-winter (9 February-1 March), and late-winter (23 April-2 May). We determined the ratios of urea nitrogen:creatinine (U:C) and cortisol:creatinine (C:C) for each sample. U:C ratios had significant year, time, and year x time interaction effects. Mid-winter ratios were higher than early or late-winter ratios. U:C ratios ranged from 0.53 to 19.05 mg/mg, and were lowest in 1997-98. Five calf caribou sacrificed in February 1994 had significantly (P 60-fold higher than those indicative of prolonged undernutrition in barren-ground caribou were common. This difference is likely because the winter diet of Peary caribou has a higher crude protein content than that of barren-ground caribou. C:C ratios had significant year and year x time interaction effects, and were highest in 1996-97 and 1997-98. C:C ratios of sacrificed caribou were similar to those of other animals during early and mid-winter. C:C ratios for Peary caribou ranged from 0.0120 ug/mg to 0.2678 ug/mg; ratios indicative of morbidity in mule deer were common. C:C and U:C ratios from the same individuals were not correlated (R = -0.073). Monitoring U:C ratios of Banks Island Peary caribou may provide useful management information.
机译：在1993年3月至1998年5月之间，从班克斯岛Peary驯鹿身上收集了200多个雪尿液样本。大多数（n = 146）样本是连续5年的3个时间段：冬初（11月3日至12月3日），冬中（2月9日至3月1日）和冬季后期（4月23日至5月2日）。我们确定了每个样品的尿素氮：肌酐（U：C）和皮质醇：肌酐（C：C）的比率。 U：C比率具有重要的年份，时间和年份x时间交互作用。冬季中期的比率高于冬季初期或后期的比率。 U：C比率范围从0.53至19.05 mg / mg，在1997-98年最低。 1994年2月牺牲的5头小驯鹿有显着性（通常比贫瘠的驯鹿长期营养不良的P高60倍。这种差异很可能是因为Peary驯鹿的冬季饮食中的粗蛋白含量高于贫瘠的驯鹿）地面驯鹿C：C比具有显着的年和年x时间交互作用，在1996-97年和1997-98年最高，被牺牲的驯鹿的C：C比与其他动物在初冬和初冬相似。 Pe驯鹿的C：C比值介于0.0120 ug / mg到0.2678 ug / mg之间;指示indicative鹿发病率的比值很常见;同一个人的C：C和U：C比值没有相关性（R = -0.073 ）。监视班克斯岛Peary驯鹿的U：C比率可能会提供有用的管理信息。

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