动物营养学报 >

2019 , Vol. 31 >Issue 4: 1781 - 1788

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.04.036

饲料科学与技术 Feed science and technology

等比回归法测定全粒木薯生长猪消化能和代谢能

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  • 湖南农业大学动物科学技术学院, 饲料安全与高效利用教育部工程研究中心, 湖南畜禽安全生产协同创新中心, 长沙 410128
孙鑫东(1997-),男,湖南邵阳人,硕士研究生,从事单胃动物营养与饲料科学研究。E-mail:862331393@qq.com

收稿日期: 2018-09-12

  网络出版日期: 2019-04-16

基金资助

国家重点研发计划（2016YFD0501209）；湖南省科技支撑项目（2015JC3100）；湖南省教育厅重点项目（13A035）；湖南农业大学"双一流"建设项目资助（SYL201802015）

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Digestible Energy and Metabolizable Energy of Full Cassava Pellet for Growing Pigs Determined Using Same Ratio Regression Method

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  • Hunan Co-Innovation Center of Animal Production Safety, Engineering Research Center for Feed Safety and Efficient Utilization of Education, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China

Received date: 2018-09-12

  Online published: 2019-04-16

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摘要

本试验旨在分析和测定全粒木薯的常规养分及其生长猪消化能（DE）、代谢能（ME）。试验选用体重为（51.9±1.8）kg的"杜×长×大"三元杂交健康去势公猪12头，采用交叉设计并分配3种饲粮。饲粮设计采取等比回归法，包括1组玉米-豆粕型基础饲粮和2组由全粒木薯分别等比替代15%、30%基础饲粮的试验饲粮，所有饲粮中除待测原料外，其余能量原料间均保持着相同的比例；回归过程以全粒木薯摄入量为回归因子，对生长猪DE、ME摄入量作回归方程，进而得到全粒木薯生长猪DE、ME。结果表明：1）全粒木薯总能为15.02 MJ/kg，干物质含量为88.58%，粗蛋白质含量为2.62%，粗脂肪含量为0.62%，粗纤维含量为17.66%，粗灰分含量为7.97%，淀粉含量为45.16%。2）基础饲粮组DE显著高于30%全粒木薯替代饲粮组（P<0.05），但与15%全粒木薯替代饲粮组差异不显著（P>0.05）；基础饲粮组ME显著高于30%全粒木薯替代饲粮组（P<0.05），但与15%全粒木薯替代饲粮组差异不显著（P>0.05）；15%与30%全粒木薯替代饲粮组间DE差异显著（P<0.05），但15%与30%全粒木薯替代饲粮组间ME差异不显著（P>0.05）。3）全粒木薯摄入量与其生长猪DE、ME摄入量关系的回归方程分别为：Y=0.61+12.50X（R2=0.96，CV=0.17），Y=0.16+11.82X（R2=0.93，CV=0.23）。综上所述，全粒木薯能量利用价值一般，其生长猪DE、ME分别为12.50、11.82 MJ/kg DM，建议用其替代玉米-豆粕型饲粮的最佳水平为15%，不影响生长猪DE、ME，但还需平衡饲粮中氨基酸水平。

关键词： 生长猪; 全粒木薯; 消化能; 代谢能; 回归法

本文引用格式

孙鑫东, 田莎, 赵月香, 吕宏伟, 李瑞, 宋泽和, 范志勇, 贺喜 . 等比回归法测定全粒木薯生长猪消化能和代谢能[J]. 动物营养学报, 2019 , 31(4) : 1781 -1788 . DOI: 10.3969/j.issn.1006-267x.2019.04.036

Abstract

The digestible energy (DE), metabolizable energy (ME) of full cassava pellet for growing pigs were determined using regression method. Twelve "Duroc×Landrance×Large White" castrate male pigs with an initial body weight of (51.9±1.8) kg were allotted to one crossing-over experiment design in which assigned to 3 diets. There were 3 diets in each experiment consisting of a corn-soybean meal basal diet and 2 test diets. The test diets consisted of each of the 2 full cassava pellet samples that partly replaced the basal diet at 15% or 30%, and the same ratios were maintained for all energy ingredients across all experimental diets. Full cassava pellet intake used as a regression factor, the DE and ME of the test ingredients were determined by the regression method. The results showed as follows:1) full cassava pellet gross energy value were 15.02 MJ/kg, dry matter content was 88.58%, crude protein content was 2.62%, crude fat content was 0.62%, crude fiber content was 17.66%, ash content was 7.97%, and the starch content was 45.16%. 2) The DE of basal diet group was significantly higher than that of 30% full cassava pellet replacement diet group (P<0.05), but that of 15% full cassava pellet replacement diet group was not significantly different (P>0.05); the ME of basal diet group was significantly higher than that of 30% full cassava pellet replacement diet group (P<0.05), but that of 15% full cassava pellet replacement diet group was not significantly different (P>0.05); the DE between 15% and 30% full cassava pellet replacement diet groups for pigs had significant difference (P<0.05); there were no significant difference in ME between 15% and 30% full cassava pellet replacement diet groups (P>0.05). 3) As dry matter basis, the regression equations of full cassava pellet intake to DE and ME intake showed below:Y=0.61+12.50X (R2=0.96, CV=0.17) and Y=0.16+11.82X (R2=0.93, CV=0.23), respectively. In conclusion, full cassava pellet energy utilization value is low, and the DE and ME for growth pigs are 12.50 and 11.82 MJ/kg DM, respectively. The current study suggestes that the optimal replacement level of full cassava pellet that not affect the DE and ME for pigs is 15% in the diet, meanwhile, need to balance amino acid levels of diets.

Key words： growing pigs; full cassava pellet; digestible energy; metabolizable energy; regression method

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