Variation of Gross Endogenous Energy and Its Effect on Value of Ture Metabolizable Energy of Feedstuffs in Roosters

YANG Xia; DANG Fangkun; ZHAO Feng; LI Ke; ZHANG Hu; WANG Yuming; LI Dailin; YIN Liting; ZHANG Hongfu

doi:10.3969/j.issn.1006-267x.2016.07.005

Chinese Journal of Animal Nutrition >

2016 , Vol. 28 >Issue 7: 2005 - 2012

DOI: https://doi.org/10.3969/j.issn.1006-267x.2016.07.005

POULTRY NUTRITION

Variation of Gross Endogenous Energy and Its Effect on Value of Ture Metabolizable Energy of Feedstuffs in Roosters

YANG Xia ,
DANG Fangkun ,
ZHAO Feng ,
LI Ke ,
ZHANG Hu ,
WANG Yuming ,
LI Dailin ,
YIN Liting ,
ZHANG Hongfu

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1. State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
2. New Hope Liuhe Co., Ltd., Beijing 100102, China

Received date: 2016-01-28

Online published: 2016-07-28

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Abstract

This experiment was conducted to investigate the variation of gross endogenous energy (GEE) in different seasons and different batches of determination and its effect on the value of true metabolizable energy (TME) of feedstuffs in roosters. The single-factor completely randomized design was used in the experiment, GEE of 12 batches in roosters was determined across the spring, summer and autumn, and its effect on the value of TME of feedstuffs was studied with 4 replicates per batch and 3 birds per replicate. The feedstuffs contained 3 corn, 3 corn distillers dried grains (DDGS), 3 cassava slice and 3 cassava meal. The mean of GEE determined all batches in each season was used as the GEE of each season, and its effect of different seasons on the TME of 4 different feedstuffs was calculated. The results showed as follows: 1) significant differences were observed on GEE in 48 hours among 12 batches (P<0.05), however, no significant differences were observed on GEE in 48 hours of different batches in the same season (P>0.05). Thus, the values of GEE in 48 hours of different batches in the same season can be merged for a mean as GEE in 48 hours in the season. 2) Contrasted GEE in 48 hours of 3 seasons, the GEE in 48 hours in autumn (67.97 kJ/bird) was significantly lower than that in spring (83.07 kJ/bird) and summer (79.90 kJ/bird) (P<0.01). However, there was no significant difference of GEE in 48 hours between spring and summer (P>0.05). 3) The GEE in 48 hours had extremely significant positive correlation with the endogenous dry matter excretion in 48 hours in the same season (r≥0.91, P<0.01). 4) In 4 feedstuffs, the ratio of maximum variation of GEE in 48 hours to the excretion of feed gross energy in different seasons were 7.36% to 8.38%,2.68% to 2.94%,7.92% to 10.86% and 3.53% to 3.96% for corn, corn DDGS, cassava slice and cassava meal, respectively. The values of TME of feedstuffs were caused by the variation of GEE in 48 hours in different seasons were ranged from 0.28 to 0.36 kJ/g. In conclusion, there is a small variation of GEE in different seasons, but the variation has no significant effect on the TME of feedstuffs in roosters.

Key words： gross endogenous energy; true metabolizable energy; roosters

Cite this article

YANG Xia , DANG Fangkun , ZHAO Feng , LI Ke , ZHANG Hu , WANG Yuming , LI Dailin , YIN Liting , ZHANG Hongfu . Variation of Gross Endogenous Energy and Its Effect on Value of Ture Metabolizable Energy of Feedstuffs in Roosters[J]. Chinese Journal of Animal Nutrition, 2016 , 28(7) : 2005 -2012 . DOI: 10.3969/j.issn.1006-267x.2016.07.005

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