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Effects of Cellulase Supplementation on Nutrient Digestibility, Energy Utilization and Methane Emission by Boer Crossbred Goats
- Source :
- Asian-Australasian Journal of Animal Sciences, Vol 29, Iss 2, Pp 204-210 (2016)
- Publication Year :
- 2016
- Publisher :
- Asian-Australasian Association of Animal Production Societies, 2016.
-
Abstract
- 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
Details
- Language :
- English
- ISSN :
- 10112367 and 19765517
- Volume :
- 29
- Issue :
- 2
- Database :
- Directory of Open Access Journals
- Journal :
- Asian-Australasian Journal of Animal Sciences
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.bb34a4d2f5414ba58a0127a8e1e3e8e0
- Document Type :
- article
- Full Text :
- https://doi.org/10.5713/ajas.15.0094