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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Asian-Australasian Association of Animal Production Societies
2016-02-01
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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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