Aufsatz
Effects of exogenous cellulase and xylanase enzyme preparations on feed intake, nutrient digestibility, growth, and economics of rearing Mongolian lambs
Abstract
In a completely randomised design, twenty four 12-months old Mongolian breed male lambs averaging 21.6 ± 0.48 kg of body weight (BW) were used to evaluate the effects of exogenous cellulase and xylanase enzyme preparations on feed intake, digestibility of nutrients, growth and economics of rearing lambs. The lambs were randomly assigned to six treatment groups with four animals per treatment. The treatment combinations comprised: i) two enzyme preparations, i.e. cellulase vs. xylanase (ENZc, ENZx), ii) two ration types, i.e. wheat straw + wheat bran (diet W) vs. barley straw + wheat bran (diet B) and iii) two control diets (diet W and diet B without enzyme preparations, –ENZ). Lambs were fed the cellulase and xylanase treated wheat and barley straws ad libitum whereas the wheat bran was offered at 400 g DM per day. Significant effects were observed for nutrient intake of diet B+ENZc, and for crude protein (CP) and neutral detergent fibre (NDF) digestibility of diet W+ENZc. The average daily gain (ADG) increased in all enzyme treated groups with highest values found in diet B+ENZc, but without significant differences found between the two enzyme preparations. Both enzyme preparations had positive effects on feed conversion ratio (FCR) of both diets, where by the highest values were found for diet B +ENZc. Enzyme preparation had no effect on the total feed cost for both diet types and showed positive effects on other economic parameters, where by cellulase yielded better results than xylanase. These results suggest that cellulase addition is effective for improving digestibility of nutrients, growth performance and net revenue ingrowing lambs.
Collections
Vol 118, No 1 (2017) (Journal of Agriculture and Rural Development in the Tropics and Subtropics (JARTS))Citation
@article{urn:nbn:de:hebis:34-2017010351864,
author={Togtokhbayar, Norovsambuu and Urankhaich, Chuluunbaatar and Ayushjav, Otgonjargal and Tsevegmed, Munkhnasan and Odongo, Nicholas E.},
title={Effects of exogenous cellulase and xylanase enzyme preparations on feed intake, nutrient digestibility, growth, and economics of rearing Mongolian lambs},
year={2017}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2017$n2017 1500 1/eng 2050 ##0##urn:nbn:de:hebis:34-2017010351864 3000 Togtokhbayar, Norovsambuu 3010 Urankhaich, Chuluunbaatar 3010 Ayushjav, Otgonjargal 3010 Tsevegmed, Munkhnasan 3010 Odongo, Nicholas E. 4000 Effects of exogenous cellulase and xylanase enzyme preparations on feed intake, nutrient digestibility, growth, and economics of rearing Mongolian lambs / Togtokhbayar, Norovsambuu 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/urn:nbn:de:hebis:34-2017010351864=x R 4204 \$dAufsatz 4170 7136 ##0##urn:nbn:de:hebis:34-2017010351864
<resource xsi:schemaLocation="http://datacite.org/schema/kernel-2.2 http://schema.datacite.org/meta/kernel-2.2/metadata.xsd"> 2017-04-20T07:54:53Z 2017-04-20T07:54:53Z 2017-03-29 1612-9830 2363-6033 urn:nbn:de:hebis:34-2017010351864 http://hdl.handle.net/123456789/2017010351864 eng Kassel University Press Urheberrechtlich geschützt https://rightsstatements.org/page/InC/1.0/ feed intake nutrient digestibility exogenous enzyme preparations average daily gain Mongolian lambs 630 Effects of exogenous cellulase and xylanase enzyme preparations on feed intake, nutrient digestibility, growth, and economics of rearing Mongolian lambs Aufsatz In a completely randomised design, twenty four 12-months old Mongolian breed male lambs averaging 21.6 ± 0.48 kg of body weight (BW) were used to evaluate the effects of exogenous cellulase and xylanase enzyme preparations on feed intake, digestibility of nutrients, growth and economics of rearing lambs. The lambs were randomly assigned to six treatment groups with four animals per treatment. The treatment combinations comprised: i) two enzyme preparations, i.e. cellulase vs. xylanase (ENZc, ENZx), ii) two ration types, i.e. wheat straw + wheat bran (diet W) vs. barley straw + wheat bran (diet B) and iii) two control diets (diet W and diet B without enzyme preparations, –ENZ). Lambs were fed the cellulase and xylanase treated wheat and barley straws ad libitum whereas the wheat bran was offered at 400 g DM per day. Significant effects were observed for nutrient intake of diet B+ENZc, and for crude protein (CP) and neutral detergent fibre (NDF) digestibility of diet W+ENZc. The average daily gain (ADG) increased in all enzyme treated groups with highest values found in diet B+ENZc, but without significant differences found between the two enzyme preparations. Both enzyme preparations had positive effects on feed conversion ratio (FCR) of both diets, where by the highest values were found for diet B +ENZc. Enzyme preparation had no effect on the total feed cost for both diet types and showed positive effects on other economic parameters, where by cellulase yielded better results than xylanase. These results suggest that cellulase addition is effective for improving digestibility of nutrients, growth performance and net revenue ingrowing lambs. open access In: Journal of Agriculture and Rural Development in the Tropics and Subtropics. Kassel : Kassel University Press. - Vol. 118, No. 1 (2017) S. 81-89 Togtokhbayar, Norovsambuu Urankhaich, Chuluunbaatar Ayushjav, Otgonjargal Tsevegmed, Munkhnasan Odongo, Nicholas E. Gedruckte Ausg. im Verlag Kassel Univ. Press (www.upress.uni-kassel.de) erschienen. </resource>
The following license files are associated with this item:
:Urheberrechtlich geschützt