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首页> 外文期刊>The Journal of Agricultural Science >Comparison of responses to dietary protein and lysine in broiler chicks reared before and after 2000 via neural network models.
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Comparison of responses to dietary protein and lysine in broiler chicks reared before and after 2000 via neural network models.

机译：通过神经网络模型比较2000年前和2000年前饲养的肉鸡雏鸡中膳食蛋白和赖氨酸的比较。

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摘要

The current study was conducted to compare the responses of broiler chicks (average daily gain (ADG) and feed efficiency (FE)) raised before and after 2000 to dietary protein and lysine through neural networks (NN). The available lysine dose-response data were extracted from the literature and arbitrarily divided into two sets of before and after 2000. The training and testing data sets derived from each group were used to develop the NN models. The developed models were subjected to a sensitivity analysis test to assess the relative importance of dietary protein and lysine on chicks' responses. An optimization algorithm was used to find the dietary protein and lysine required for maximum ADG and FE, based on each dataset. The results showed that the NN models developed could predict ADG and FE efficiently in broiler chicks of before and after 2000, and the higher accuracies of prediction were attained by these models compared to those of regression models. Sensitivity analysis indicated that ADG and FE were more sensitive to dietary lysine, compared to protein, in both time periods. Based on the optimization results, the protein and lysine requirements for maximum ADG or FE for birds reared after 2000 were lower and higher, respectively, compared to those reared before 2000. The protein requirements for maximum ADG and FE for birds reared before 2000 were 241.3 and 247.0 g/kg diet and for lysine 10.76 and 11.18 g/kg diet, respectively. In birds reared after 2000, maximum ADG was obtained when the diet contained 224.30 g protein/kg diet and 11.75 g lysine/kg diet, whereas maximum FE was achieved with a diet containing 228.3 g protein and 13.1 g lysine.
机译：进行目前的研究以比较肉鸡雏鸡的反应（通过神经网络（NN）在2000年之前和之后提出的2000年和膳食蛋白和赖氨酸的饮食效率（Fe））。可用的赖氨酸剂量 - 响应数据从文献中提取，并任意分为2000年之前和之后的两组。从每个组培训和测试数据集用于开发NN模型。开发模型进行了敏感性分析试验，以评估膳食蛋白和赖氨酸对小鸡反应的相对重要性。基于每个数据集，使用优化算法用于找到最大ADG和Fe所需的膳食蛋白和赖氨酸。结果表明，开发的NN模型可以在2000年之前和之后有效地预测ADG和FE，并且与回归模型相比，这些模型实现了更高的预测精度。敏感性分析表明，与蛋白质相比，ADG和Fe对膳食赖氨酸更敏感，两次蛋白质。基于优化结果，与2000年前饲养的人相比，2000后饲养的鸟类的最大ADG或FE的蛋白质和赖氨酸的要求分别较低，更高。2000年之前饲养的鸟类的最大ADG和FE的蛋白质要求为241.3和247.0g / kg饮食和赖氨酸10.76和11.18g / kg饮食。在2000年后饲养的鸟类中，当饮食含有224.30g蛋白/ kg饮食和11.75g赖氨酸/ kg饮食时，获得了最大ADG，而最大的Fe是通过含有228.3g蛋白和13.1g赖氨酸的饮食来实现的。

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    Faridi A.; Golian A.; Ahmadi H.;

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    Centre of Excellence in the Animal Sciences Department Ferdowsi University of Mashhad Mashhad 91775-1163 Iran;

    Centre of Excellence in the Animal Sciences Department Ferdowsi University of Mashhad Mashhad 91775-1163 Iran;

    Centre of Excellence in the Animal Sciences Department Ferdowsi University of Mashhad Mashhad 91775-1163 Iran;

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  • 正文语种 eng
  • 中图分类 农业科学;
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