Sydney School of Veterinary Science, Poultry Research Foundation, Faculty of Science, The University of Sydney, Camden, NSW 2570, Australia.
Sydney School of Veterinary Science, Poultry Research Foundation, Faculty of Science, The University of Sydney, Camden, NSW 2570, Australia.
Poult Sci. 2020 Apr;99(4):2176-2184. doi: 10.1016/j.psj.2019.11.034. Epub 2020 Jan 27.
Previous work has identified an effect of hatch time on chick femur mineralization. This experiment assessed the impact of hatch time and a 24-h post-hatch unfed time period on chick bone mineralization and yolk mineral utilization. In early hatching chicks, yolk Mg, Zn, K, P, Fe, and Cu decreased by 40 to 50% over the 24-h post-hatch unfed time period, whereas yolk Ca and Na decreased by 25 to 40% (P = 0.026). Yolk Sr was intermediate, decreasing by 37%. Late hatching chicks which had been hatched for no more than 30 h had a higher femur bone ash percentage compared to early hatching chicks which had spent over a 30-hour sojourn unfed in the incubator (P = 0.013). These results indicate that removing chicks from the incubator within 30 h of their hatch is likely to benefit their femoral mineralization.
先前的研究已经确定了孵化时间对雏鸡股骨矿化的影响。本实验评估了孵化时间和孵化后 24 小时未进食时间对雏鸡骨骼矿化和卵黄矿化利用的影响。在早期孵化的雏鸡中，孵化后 24 小时未进食期间，卵黄中的 Mg、Zn、K、P、Fe 和 Cu 减少了 40%至 50%，而卵黄中的 Ca 和 Na 减少了 25%至 40%（P=0.026）。卵黄中的 Sr 则处于中间水平，减少了 37%。孵化时间不超过 30 小时的晚孵化雏鸡的股骨骨灰百分比高于在孵化器中未进食超过 30 小时的早孵化雏鸡（P=0.013）。这些结果表明，在孵化后 30 小时内将雏鸡从孵化器中取出可能有利于其股骨矿化。
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