0~4周龄怀乡鸡饲粮中非植酸磷的适宜水平

陈静文; 梁翠萍; 王润莲; 汪忠艳; 刘添仪

doi:10.3969/j.issn.1006-267x.2019.10.018

动物营养学报 >

2019 , Vol. 31 >Issue 10: 4545 - 4552

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.10.018

猪与禽营养 Swine and poultry nutrition

0~4周龄怀乡鸡饲粮中非植酸磷的适宜水平

陈静文 ,
梁翠萍 ,
王润莲 ,
汪忠艳 ,
刘添仪

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1. 广东海洋大学深圳研究院, 深圳 518108;
2. 广东海洋大学动物科学系, 湛江 524088;
3. 广州爱保农饲料有限公司, 广州 510310

陈静文(1993-),女,河南开封人,硕士研究生,动物营养与饲料科学专业。E-mail:1395580704@qq.com

收稿日期: 2019-03-28

网络出版日期: 2019-10-17

基金资助

深圳市科技计划项目（JCYJ20170818111931279）；广东省研究生教育创新计划项目（2017SFKC22）

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Dietary Optimum Level of Non-Phytate Phosphorous for Huaixiang Broilers Aged from 0 to 4 Weeks

CHEN Jingwen ,
LIANG Cuiping ,
WANG Runlian ,
WANG Zhongyan ,
LIU Tianyi

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1. Shenzhen Institute of Guangdong Ocean University, Shenzhen 518108, China;
2. Department of Animal Science, Guangdong Ocean University, Zhanjiang 524088, China;
3. Guangzhou Applon Technology Co., Ltd., Guangzhou 510310, China

Received date: 2019-03-28

Online published: 2019-10-17

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摘要

本试验旨在通过研究饲粮非植酸磷（NPP）水平对0~4周龄怀乡鸡生长性能、胫骨特性、钙与磷代谢率及血清生化指标的影响，确定其饲粮中NPP的适宜水平。采用单因子完全随机设计，选用健康、体重相近的1日龄怀乡鸡300只，随机分为5组，每组6个重复，每个重复10只鸡。5组试鸡分别饲喂NPP水平为0.32%、0.39%、0.46%、0.53%、0.60%的玉米-豆粕型试验饲粮，试验期28 d。结果显示：1）饲粮NPP水平对怀乡鸡的平均日采食量没有显著影响（P>0.05），但对末重、平均日增重和料重比有显著影响（P<0.05），其与饲粮NPP水平的最佳拟合曲线分别为二次折线（R²=0.852 0）、线性折线（R²=0.854 1）和二次曲线（R²=0.900 1）。2）饲粮NPP水平对怀乡鸡的胫骨抗压强度及灰分、钙含量有显著影响（P<0.05），其与饲粮NPP水平的最佳拟合曲线分别为二次曲线（R²=0.887 2）、二次折线（R²=0.904 3）、线性折线（R²=0.900 7）。3）怀乡鸡的粗灰分、钙、磷代谢率也随饲粮NPP水平的增加发生显著变化（P<0.05），其与饲粮NPP水平的最佳拟合曲线分别为线性折线（R²=0.964 3）、线性折线（R²=0.876 2）、二次曲线（R²=0.941 1）。4）饲粮NPP水平对怀乡鸡的血清磷含量有显著影响（P<0.05），其与饲粮NPP水平的最佳拟合曲线为线性折线（R²=0.946 3）。综上可知，料重比、胫骨灰分和钙含量、粗灰分和磷代谢率及血清磷含量可敏感反映0~4周龄怀乡鸡体内磷营养状况，通过这6个敏感指标的拟合方程求得饲粮NPP适宜水平分别为0.47%、0.46%、0.46%、0.46%、0.49%、0.45%，因此建议0~4周龄怀乡鸡饲粮中NPP的适宜水平为0.45%~0.49%，仅满足怀乡鸡生长的NPP需要量为0.39%，而满足其骨骼发育的NPP需要量为0.46%。

关键词： 怀乡鸡; 非植酸磷; 生长性能; 胫骨特性; 代谢率; 血清

本文引用格式

陈静文 , 梁翠萍 , 王润莲 , 汪忠艳 , 刘添仪 . 0~4周龄怀乡鸡饲粮中非植酸磷的适宜水平[J]. 动物营养学报, 2019 , 31(10) : 4545 -4552 . DOI: 10.3969/j.issn.1006-267x.2019.10.018

Abstract

In this experiment, the effects of dietary non-phytate phosphorous (NPP) level on growth performance, tibia characteristics, the metabolism rates of calcium and phosphorous and serum bio-chemical indices were investigated to determine the dietary optimum level of NPP for Huaixiang broilers aged from 0 to 4 weeks. A total of 300 one-day-old healthy Huaixiang broilers with the similar body weight were assigned to 5 groups with 6 replicates of 10 birds each using a completely randomized design. Broilers in the 5 groups were fed a corn-soybean meal type experimental diets containing 0.32%, 0.39%, 0.46%, 0.53% and 0.60% NPP for 28 days, respectively. The results showed that the dietary NPP level did not significantly affect average daily feed intake (P>0.05), but significantly affected final weight, average daily gain and feed/gain (P<0.05). The best fitted curves of the final weight, average daily gain and feed/gain with dietary NPP level were quadratic broken line (R²=0.852 0), linear broken line (R²=0.854 1) and quadratic curve (R²=0.900 1), respectively. 2) Dietary NPP level had significant effects on tibia broken strength, tibia ash content, tibia bone calcium content (P<0.05). The best fitted curves of the tibia broken strength, tibia ash content, tibia bone calcium content with dietary NPP level were quadratic curve (R²=0.887 2), quadratic broken line (R²=0.904 3) and linear broken line (R²=0.900 7), respectively. 3) The metabolic rates of ash, calcium and phosphorous were significantly changed with the dietary NPP level increasing (P<0.05). The best fitted curves of the metabolic rates of ash, calcium and phosphorous with dietary NPP level were linear broken line (R²=0.964 3), linear broken line (R²=0.876 2) and quadratic curve (R²=0.941 1), respectively. 4) Dietary NPP level had significant effect on serum phosphorous content (P<0.05), and the serum phosphorous content showed a linear broken line (R²=0.964 3) with the dietary NPP level. In conclusion, feed/gain, tibia ash content, tibia calcium content, the metabolic rates of ash and phosphorous and serum phosphorous content are sensitive indicators for estimating phosphorous nutrient status of Huaixiang broilers. Based on the fitted equations of the 6 sensitive indicators, the estimated NPP optimum levels are 0.47%, 0.46%, 0.46%, 0.46%, 0.49% and 0.45%, respectively. So, the recommended dietary NPP optimum level for Huaixiang broilers aged from 0 to 4 weeks is in the range of 0.45% to 0.49%. The NPP requirement for optimum growth can set to be 0.39%, while the NPP requirement for optimum bone development seems to be 0.46%.

Key words： Huaixiang broilers; non-phytate phosphorous; growth performance; tibia characteristics; metabolic rate; serum

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