The aim of the study was to compare morphometric indices and the mineralization level of humerus, femur and tibia in Leghorn (H-22), Sussex (S-66) and Rhode Island Red (R-11) hens at different age (weeks 6., 16., 45. and 64.), as well as some blood parameters. The material for the experiment was one-day old chicks of breeds: Leghorn (H-22), Sussex (S-66) and Rhode Island Red –RIR (R-11), which were separated into three groups. At 6, 16, 45 and 64 weeks of the study, 10 birds selected from each group were weighed, slaughtered, and their right femurs, tibiae and humeri were dissected. After removing soft tissues, the bones were weighed and measured for length, diameter, and the Seedor index (SI) was calculated. The bones were analysed for the content of calcium (Ca), phosphorus (P) and crude ash (CA). At 64 weeks, blood was collected from the hens and analysed for the concentration of Ca, P, pyridinoline and deoxypyridinoline. The study showed that hen breed had an effect mostly on morphometric indices of the bones such as bone weight and diameter, and the Seedor index (SI), while the age of birds had an effect on the bone mineralization level up to 45 weeks of age. The bone mineralization did not decrease in the studied breeds of hens at the end of the laying period. It was also found that heavier birds (RIR) had greater diameter bones and a higher SI, but the content of ash and minerals in the bones of that breed was generally similar to the Leghorn and Sussex hens. RIR hens exhibited higher phosphorus plasma concentration compared to Sussex hens. This may suggest that RIR birds have a slightly stronger bone system compared to Leghorn and Sussex hens.

中文翻译：

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三种母鸡的形态指标，长骨矿化水平和部分血液参数的比较

该研究的目的是比较不同年龄（6周）的来亨鸡（H-22），苏塞克斯（S-66）和罗德岛红（R-11）母鸡的肱骨，股骨和胫骨的形态计量指标和矿化水平。 ，16、45和64），以及一些血液参数。实验的材料是一天大的小鸡：来克亨（H-22），苏塞克斯（S-66）和罗德岛红–RIR（R-11），分为三组。在研究的第6、16、45和64周时，称重，屠宰从每组中选出的10只家禽，并解剖其右股骨，胫骨和肱骨。去除软组织后，称重骨骼并测量其长度，直径，并计算出斯托德指数（SI）。分析骨骼中钙（Ca），磷（P）和粗灰分（CA）的含量。在64周时，从母鸡中采集血液，分析其钙，磷，吡啶啉和脱氧吡啶啉的浓度。研究表明，母鸡品种对骨骼的形态指标（如骨重，直径和种子指数）有很大影响，而禽龄对45周龄的骨矿化水平有影响。 。在产蛋期结束时，研究品种的母鸡的骨矿化没有减少。还发现重禽（RIR）的骨头直径更大，SI更高，但是该品种骨头中的灰分和矿物质含量通常与来格霍恩和苏塞克斯母鸡相似。与苏塞克斯母鸡相比，RIR母鸡的磷血浆浓度更高。这可能表明，与来格霍恩和苏塞克斯母鸡相比，RIR鸟类的骨骼系统略强。