| 0～2周龄肉用仔鸡日粮中锰需要量的研究 |
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| 引用本文： | 朱玉琴,张日俊.0～2周龄肉用仔鸡日粮中锰需要量的研究[J].动物营养学报,1997(3). |
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| 作者姓名： | 朱玉琴 张日俊 |
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| 作者单位： | 中国农业大学动物科技学院!北京，100094 |
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| 摘 要： | 应用5因子5水平部分实施的2次回归几乎正交旋转组合设计，采用玉米-豆粕型口粮，对432只AA（ArborAcres）公雏日粮中锰（Mn）、锌（Zn）、钙（Ca）、磷（P）、维生素D3（VD3）5因素进行研究，通过建立肉仔鸡体重、不同组织中锰浓度以及生化指标与5因子间的多元二次回归模型，预测0～2周龄肉仔鸡生产性能最佳、各组织中锰浓度和锰超氧化物歧化酶（Mn－SOD）活性最大时，日粮中锰的适宜添加量。统计分析结果表明，肾脏、脾脏中锰浓度分别与5因子建立的预测回归方程达到极显著（P＜0．01）和显著（P＜0．05）。获得最大体重、肾脏和胰脏的锰浓度的锰适宜添加量为79～83mg／kg，获得最大Mn－SOD活性的锰适宜添加量为98mg／kg，获得最大肝脏、脾脏锰浓度和最高饲料转化效率（F／G）的锰适宜添加量为118～127mg／kg，以生产性能为目标的锰需要量低于生理需要量。根据本研究结果作者推荐0一2周龄肉仔鸡口粮锰的适宜添加量为79～127mg／kg。
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| 关 键 词： | 肉用仔鸡 锰 需要量 回归方程 组织锰浓度 锰超氧化物歧化酶 血清碱性磷酸酶活性 |
THE MANGANESE REQUIREMENT IN BROILER CHICKS AGED FROM 0 TO 2 WEEKS |
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| Zhu Yuqing, Zhang Rijun.THE MANGANESE REQUIREMENT IN BROILER CHICKS AGED FROM 0 TO 2 WEEKS[J].Acta Zoonutrimenta Sinica,1997(3). |
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| Authors: | Zhu Yuqing Zhang Rijun |
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| Abstract: | According to the second - order regression,. nearlyorthognal roatable composition fivefactoral designs, a study of the requirements of calcium, phosphorus, vitamin D3, manganeseand zinc was conducted with 432 one - day - old Arbor Acres(AA)male broiler chicks in 36groups of 12 replication(control group from 27 to 36). Body weight(BW), feed / gain(F /G), manganese - superoxide dismutase(Mn - SOD) activity of heart tissue and manganesecontent in the tissues were detected. The math models were established between indicatorsand five nutritional factors to predict the optimum supplementation of five factors and toprobe the mutual relationships among factors and indictors. Results showed that there wasvery significant difference(P < 0. 01 ~ 0. 05) in regression equation between manganeseconcentration in kidney and spleen and five factors in the different diets. To obtain maxiumbody weight and the higtest manganese concentration in kidney and pancreas, the optimumdietary manganese level is from 79 to 83 mg / kg. The Mn level to obtain maxium Mn - SODactivity is 98mg / kg, the Mn level to get the highest feed conversion efficiency and man-ganese - content in liver and spleen is 118 to 127 mg / kg. It is suggested that manganesesupplement level of diet in broiler chick aged from 0 to 2 weeks is 79 to 127 mg / kg. |
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| Keywords: | Broiler Manganese requirement Regression equation Manganese concentration in tissue Mn-SOD Alkaline phosphatease(AKP) |
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