动物营养学报 >

2016 , Vol. 28 >Issue 11: 3464 - 3472

DOI: https://doi.org/10.3969/j.issn.1006-267x.2016.11.013

禽营养 Poultry Nutrition

评定菜籽粕的肉鸭净能的研究

  • 王泽法 ,
  • 贾刚 ,
  • 赵华 ,
  • 陈小玲 ,
  • 刘光芒 ,
  • 王康宁
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  • 四川农业大学动物营养研究所, 雅安 625014

收稿日期: 2016-05-25

  网络出版日期: 2016-11-18

基金资助

四川省科技支撑计划（2013NZ0054）；四川农业大学双支计划

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Study on Evaluating Net Energy of Rapeseed Meal for Meat Ducks

  • WANG Zefa ,
  • JIA Gang ,
  • ZHAO Hua ,
  • CHEN Xiaoling ,
  • LIU Guangmang ,
  • WANG Kangning
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  • Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an 625014, China

Received date: 2016-05-25

  Online published: 2016-11-18

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摘要

本试验旨在实测菜籽粕的肉鸭净能（NE），并通过相关、回归分析建立菜籽粕NE与其常规组分之间的回归模型。试验采用析因法将菜籽粕的NE剖分为其提供给肉鸭的维持净能（NEm）和沉积净能（NEp），NEm用肉鸭禁食产热（FHP）来估计，NEp用比较屠宰法测定。选用760只7日龄、平均体重为（130.48±3.01）g的樱桃谷肉鸭进行试验：首先选择100只肉鸭进行NEm评定试验，设自由采食、限饲15%、限饲25%、限饲35%和限饲45%共5个处理，建立产热（HP）和食入代谢能（MEI）的回归关系，外推到MEI为0时求得FHP；然后选择640只鸭进行NEp评定试验，试验前屠宰20只肉鸭测定初始体能量作为起始对照，设基础饲粮组和菜籽粕替代基础饲粮组31个处理，所有处理均设5个重复，每个重复4只肉鸭，15日龄时将肉鸭全部屠宰测定体能量；最后将菜籽粕NE与其常规组分进行相关、回归分析并建立预测模型。结果表明：1）樱桃谷肉鸭的NEm为0.557 MJ/（kg W0.75·d）。2）31种不同菜籽粕的NE有较大差异，经套算法得到菜籽粕的NE为4.18~6.05 MJ/kg DM，NE/表观代谢能（AME）为0.56±0.06。3）菜籽粕NE与其常规组分高度相关，多元线性逐步回归建立的回归模型如下：NE=0.416AME+0.041CP-0.020NDF+0.110CF-1.093（R2=0.901，RSD=0.06，P<0.01），式中：CP为粗蛋白质，NDF为中性洗涤纤维，CF为粗纤维。由此可见，不同来源的菜籽粕的常规组分和肉鸭NE有较大差异，菜籽粕NE与其常规组分高度相关，并具有回归关系。

关键词： 菜籽粕; 樱桃谷肉鸭; 净能; 常规组分

本文引用格式

王泽法 , 贾刚 , 赵华 , 陈小玲 , 刘光芒 , 王康宁 . 评定菜籽粕的肉鸭净能的研究[J]. 动物营养学报, 2016 , 28(11) : 3464 -3472 . DOI: 10.3969/j.issn.1006-267x.2016.11.013

Abstract

This experiment was conducted to measured the net energy (NE) of rapeseed meal for meat ducks, and establish predition models for net energy of rapeseed meal based on its conventional composition for Cherry Valley duck by correlation and regression analysis. A factoral analysis procedure was used to estimate net energy of rapeseed meal that combines net energy for maintenance (NEm) and production (NEp). NEm was estimated by fasting heat production (FHP) of meat ducks, NEp was measured using the comparative slaughter technique. A total of 760 seven-day-old Cherry Valley ducks with an average weight of (130.48±3.01) g were selected, firstly, a total of 100 ducks was seclected for the experiment of NEm, the five treatments including ad libitum and restricted feeding by 15%, 25%, 35% and 45%, respectivily; the FHP measured was by establishing regression equation between heat production (HP) and metabolic energy intake (MEI) extrapolated to MEI for 0. A total of 640 ducks were seclected for the experiment of NEp which were measured by substitution method with 31 rapeseed meal groups and a basal diet group. The remaining 20 ducks of the experimental were slaughtered at the beginning of the experiment to determine the initial body energy. Each treatment contained 5 replicates with 4 ducks per replicate, at the end of experiment all ducks were slaughtered to determined the body energy. Correlation and multiple linear stepwise regression analyses were conducted to establish the models for predicting NE of rapeseed meal by conventional compositions. The results showed as follows:1) the NEm of Cherry Valley ducks was 0.557 MJ/(kg W0.75·d). 2) The NE of 31 different meals were quite different, the NE of rapeseed meal was 4.18 to 6.05 MJ/kg DM using the conversion method, the NE/apparent metabolizable energy (AME) was 0.56±0.06. 3) The NE of rapeseed meal was highly revelvant with its conventional composition, multiple linear regression to establish regression model as follows, NE=0.416AME+0.041CP-0.020NDF+0.110CF-1.093 (R2=0.901, RSD=0.06, P<0.01), in the formula, CP was crude protein, NDF was neutral detergent fiber, CF was crude fiber. It is concluded that the NE and conventional composition of rapeseed meal is quite different. The NE of rapeseed meal is highly revelvant with its conventional composition and has regression relationship.

Key words： rapeseed meal; Cherry Valley ducks; net energy; conventional composition

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