Rabbit teeth serve as a calcium source for rabbits (Oryctolagus cuniculus)

IF 2.3 2区农林科学 Q1 VETERINARY SCIENCES

Veterinary journal Pub Date : 2024-11-16 DOI:10.1016/j.tvjl.2024.106268

J. Mäkitaipale , H. Opsomer , J.-M. Hatt , B. Riond , M. Clauss , A. Liesegang

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引用次数: 0

Abstract

Rabbits have hypselodont (ever-growing) teeth; dental growth constantly replaces dental tissue lost due to abrasion and attrition. It has been suggested that rabbits must have high mineral requirements, in particular for calcium, to fuel this constant tooth growth. However, this assumption ignores the fact that tooth wear represents finely ground tissue that is not lost to the body but swallowed during food processing. No studies exist regarding the possible recycling of dental enamel and dentin calcium. In this cross-over study, eight-months old intact female rabbits were fed with a complete pelleted diet containing either calcium carbonate/dicalcium phosphate (control) or ground rabbit teeth as calcium sources for 15 days each. After 11 days of adaptation, intake, urinary and faecal losses were quantified in a 4-day period in metabolism cages, and blood mineral levels were determined in a final blood sample. There were few relevant, significant differences between the treatments, with the exception of calcium digestibility (20 ±8 % on the control vs. 33 ±6 % on the tooth meal diet, P = 0.002) and total calcium retention (0.10 ±0.13 vs. 0.33 ±0.10 g/d, P = 0.004). The results suggest that rabbits are well able to recycle the minerals from dental tissue lost during dental wear.

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兔牙是兔子（Oryctolagus cuniculus）的钙源。

兔子的牙齿是不断生长的；牙齿的生长会不断补充因磨损和损耗而失去的牙齿组织。有人认为，兔子对矿物质的需求量很大，尤其是对钙的需求量，这样才能促进牙齿的不断生长。然而，这种假设忽略了一个事实，即牙齿磨损代表的是细磨组织，这些细磨组织不会流失到体内，而是在食物加工过程中被吞食。目前还没有关于牙釉质和牙本质钙可能循环利用的研究。在这项交叉研究中，八只八个月大的完整雌兔被喂食含有碳酸钙/磷酸二氢钙（对照组）或磨碎的兔牙作为钙源的全颗粒食物，每种食物喂食 15 天。经过 11 天的适应期后，在新陈代谢笼中对摄入量、尿液和粪便损失进行了为期 4 天的量化，并对最终血液样本中的血液矿物质水平进行了测定。除了钙消化率（对照组为 20 ±8% vs. 牙粉日粮为 33 ±6%，P = 0.002）和总钙保留率（0.10 ±0.13 vs. 0.33 ±0.10g/d，P = 0.004）之外，其他处理之间几乎没有相关的显著差异。结果表明，兔子能够很好地回收牙齿磨损过程中牙齿组织中流失的矿物质。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Veterinary journal 农林科学-兽医学

CiteScore

4.10

自引率

4.50%

发文量

审稿时长

40 days

期刊介绍： The Veterinary Journal (established 1875) publishes worldwide contributions on all aspects of veterinary science and its related subjects. It provides regular book reviews and a short communications section. The journal regularly commissions topical reviews and commentaries on features of major importance. Research areas include infectious diseases, applied biochemistry, parasitology, endocrinology, microbiology, immunology, pathology, pharmacology, physiology, molecular biology, immunogenetics, surgery, ophthalmology, dermatology and oncology.