Effects of Cellulase Supplementation on Nutrient Digestibility, Energy Utilization and Methane Emission by Boer Crossbred Goats

This study examined the effect of supplementing exogenous cellulase on nutrient and energy utilization. Twelve desexed Boer crossbred goats were used in a replicated 3×3 Latin square design with 23-d periods. Dietary treatments were basal diet (control, no cellulase), basal diet plus 2 g unitary cel...

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Main Authors: Lizhi Wang, Bai Xue
Format: Article
Language:English
Published: Asian-Australasian Association of Animal Production Societies 2016-02-01
Series:Asian-Australasian Journal of Animal Sciences
Subjects:
Online Access:http://www.ajas.info/upload/pdf/ajas-29-2-204.pdf
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spelling doaj-bb34a4d2f5414ba58a0127a8e1e3e8e02020-11-24T21:05:36ZengAsian-Australasian Association of Animal Production SocietiesAsian-Australasian Journal of Animal Sciences1011-23671976-55172016-02-0129220421010.5713/ajas.15.009423288Effects of Cellulase Supplementation on Nutrient Digestibility, Energy Utilization and Methane Emission by Boer Crossbred GoatsLizhi WangBai XueThis study examined the effect of supplementing exogenous cellulase on nutrient and energy utilization. Twelve desexed Boer crossbred goats were used in a replicated 3×3 Latin square design with 23-d periods. Dietary treatments were basal diet (control, no cellulase), basal diet plus 2 g unitary cellulase/kg of total mixed ration dry matter (DM), and basal diet plus 2 g compound cellulase/kg of total mixed ration DM. Three stages of feeding trials were used corresponding to the three treatments, each comprised 23 d, with the first 14 d as the preliminary period and the following 9 d as formal trial period for metabolism trial. Total collection of feces and urine were conducted from the 4th d of the formal trial, and gas exchange measures were determined in indirect respiratory chambers in the last 3 d of the formal trial. Results showed that cellulase addition had no effect (p>0.05) on nutrient digestibility. Dietary supplementation of cellulase did not affect (p>0.05) N intake and retention in goats. Gross energy (GE) intake, fecal energy and urinary energy excretion, heat production were not affected (p>0.05) by the cellulase supplementation. Total methane emission (g/d), CH4 emission as a proportion of live weight or feed intake (DM, organic matter [OM], digestible DM or digestible OM), or CH4 energy output (CH4-E) as a proportion of energy intake (GE, digestible energy, or metabolizable energy), were similar (p>0.05) among treatments. There was a significant (p<0.001) relationship between CH4 and live weight (y = 0.645x+0.2, R2 = 0.54), CH4 and DM intake (y = 16.7x+1.4, R2 = 0.51), CH4 and OM intake (y = 18.8x+1.3, R2 = 0.51) and CH4-E and GE intake. Results from this study revealed that dietary supplementation of cellulase may have no effect on nutrient digestibility, nitrogen retention, energy metabolism, and methane emission in goat.http://www.ajas.info/upload/pdf/ajas-29-2-204.pdfCellulaseDigestibilityEnergyGoatNutrientsMethane
collection DOAJ
language English
format Article
sources DOAJ
author Lizhi Wang
Bai Xue
spellingShingle Lizhi Wang
Bai Xue
Effects of Cellulase Supplementation on Nutrient Digestibility, Energy Utilization and Methane Emission by Boer Crossbred Goats
Asian-Australasian Journal of Animal Sciences
Cellulase
Digestibility
Energy
Goat
Nutrients
Methane
author_facet Lizhi Wang
Bai Xue
author_sort Lizhi Wang
title Effects of Cellulase Supplementation on Nutrient Digestibility, Energy Utilization and Methane Emission by Boer Crossbred Goats
title_short Effects of Cellulase Supplementation on Nutrient Digestibility, Energy Utilization and Methane Emission by Boer Crossbred Goats
title_full Effects of Cellulase Supplementation on Nutrient Digestibility, Energy Utilization and Methane Emission by Boer Crossbred Goats
title_fullStr Effects of Cellulase Supplementation on Nutrient Digestibility, Energy Utilization and Methane Emission by Boer Crossbred Goats
title_full_unstemmed Effects of Cellulase Supplementation on Nutrient Digestibility, Energy Utilization and Methane Emission by Boer Crossbred Goats
title_sort effects of cellulase supplementation on nutrient digestibility, energy utilization and methane emission by boer crossbred goats
publisher Asian-Australasian Association of Animal Production Societies
series Asian-Australasian Journal of Animal Sciences
issn 1011-2367
1976-5517
publishDate 2016-02-01
description This study examined the effect of supplementing exogenous cellulase on nutrient and energy utilization. Twelve desexed Boer crossbred goats were used in a replicated 3×3 Latin square design with 23-d periods. Dietary treatments were basal diet (control, no cellulase), basal diet plus 2 g unitary cellulase/kg of total mixed ration dry matter (DM), and basal diet plus 2 g compound cellulase/kg of total mixed ration DM. Three stages of feeding trials were used corresponding to the three treatments, each comprised 23 d, with the first 14 d as the preliminary period and the following 9 d as formal trial period for metabolism trial. Total collection of feces and urine were conducted from the 4th d of the formal trial, and gas exchange measures were determined in indirect respiratory chambers in the last 3 d of the formal trial. Results showed that cellulase addition had no effect (p>0.05) on nutrient digestibility. Dietary supplementation of cellulase did not affect (p>0.05) N intake and retention in goats. Gross energy (GE) intake, fecal energy and urinary energy excretion, heat production were not affected (p>0.05) by the cellulase supplementation. Total methane emission (g/d), CH4 emission as a proportion of live weight or feed intake (DM, organic matter [OM], digestible DM or digestible OM), or CH4 energy output (CH4-E) as a proportion of energy intake (GE, digestible energy, or metabolizable energy), were similar (p>0.05) among treatments. There was a significant (p<0.001) relationship between CH4 and live weight (y = 0.645x+0.2, R2 = 0.54), CH4 and DM intake (y = 16.7x+1.4, R2 = 0.51), CH4 and OM intake (y = 18.8x+1.3, R2 = 0.51) and CH4-E and GE intake. Results from this study revealed that dietary supplementation of cellulase may have no effect on nutrient digestibility, nitrogen retention, energy metabolism, and methane emission in goat.
topic Cellulase
Digestibility
Energy
Goat
Nutrients
Methane
url http://www.ajas.info/upload/pdf/ajas-29-2-204.pdf
work_keys_str_mv AT lizhiwang effectsofcellulasesupplementationonnutrientdigestibilityenergyutilizationandmethaneemissionbyboercrossbredgoats
AT baixue effectsofcellulasesupplementationonnutrientdigestibilityenergyutilizationandmethaneemissionbyboercrossbredgoats
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