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首页> 外文期刊>Revista Brasileira de Ciência Avícola >Femur Properties of Embryo in the Layer Hybrid and Pure Breeds
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Femur Properties of Embryo in the Layer Hybrid and Pure Breeds

机译：杂种和纯种蛋鸡的股骨特性

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Layer hybrids are more superior in the egg yield than pure breeds. But this superiority causes some problems in the bones during the production period. There are a lot of differences among genotypes in the production period that have been examined extensively, however, the differences throughout incubation period aren’t known yet. Thus, the objective of this study was to evaluate the differences in femur properties of pure breed and layer hybrid embryos during the incubation period. A total of 354 fresh hatching eggs were used from one hybrid (Lohman White) and two pure breeds (Denizli & Gerze). The eggs were incubated. Hatching eggs from each genotype at the beginning of embryonic days (E) 19 and E21 were examined. At these embryonic ages, 12 eggs were selected from each genotype. The eggs were opened and embryos were sacrificed by cervical dislocation. Both femurs were dissected from each embryo and then structure, mineral composition and mechanical properties of femur were determined. The genotype affected the length, width and Zn level in the femur of embryos. Weight, length, width, load of yield and ultimate, ash and all examined minerals increased with embryonic development. These results showed that some femur properties of embryos were influenced by the genotype and layer hybrid embryos are beginning to be advantageous in terms of Zn level in the femur at E21. This study leads to better understanding femur development during the incubation period in layer hybrid and pure breeds.
机译：与纯种相比，杂种杂种的产蛋率更高。但是这种优越性在生产期间在骨头上造成了一些问题。在生产期间，基因型之间存在许多差异，对此进行了广泛研究，但是，整个孵化期间的差异尚不清楚。因此，本研究的目的是评估潜伏期纯种和层杂种胚胎的股骨特性差异。一个杂种（Lohman White）和两个纯种（Denizli＆Gerze）总共使用了354个新鲜孵化蛋。将卵孵育。在胚胎天（E）19和E21开始时检查每种基因型的孵化卵。在这些胚胎年龄，从每种基因型中选择了12个卵。打开卵，通过颈脱位处死胚胎。从每个胚胎解剖两个股骨，然后确定股骨的结构，矿物质组成和力学性能。基因型影响胚胎股骨的长度，宽度和锌水平。重量，长度，宽度，产量和终极负荷，灰分以及所有检验的矿物质都随着胚胎发育而增加。这些结果表明基因型影响胚胎的某些股骨特性，并且在E21的股骨中锌水平方面，层间杂种胚胎开始具有优势。这项研究使人们更好地了解了在杂交和纯种蛋鸡孵化期间的股骨发育。

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