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Chemical processing of wheat straw and cotton by-products for fattening cattle 3. Performance of animals receiving material in complete feeds
Year:
1980
Source of publication :
Animal Production
Authors :
הולצר, צבי
;
.
פולמן, ישעיהו
;
.
Volume :
31
Co-Authors:
Levy, D., Nve Ya'ar Regional Experiment Station and the Volcani Center Agricultural Research Organization, Bet Dagan, Israel
Holzer, Z., Nve Ya'ar Regional Experiment Station and the Volcani Center Agricultural Research Organization, Bet Dagan, Israel
Folman, Y., Nve Ya'ar Regional Experiment Station and the Volcani Center Agricultural Research Organization, Bet Dagan, Israel
Facilitators :
From page:
27
To page:
33
(
Total pages:
7
)
Abstract:
The fibrous roughages, wheat straw (WS) and cotton stalks (CS), were left untreated or treated with 30 g sodium hydroxide per kg, and residual alkali was either neutralized with sulphuric acid or left unneutralized. All roughages were pelleted and used either in complete feeds or separately. The effects of these treatments on the nutritive value of the roughages were examined in digestibility trials in vitro and in vivo, and in a 7·month feeding trial of a factorial arrangement of 2 × 3 × 2, in which the roughages constituted 350 g/kg of the diets. Approximately 150 g/kg of the neutral-detergent fibre (cell wall) constituents of both roughages was solubilized by sodium hydroxide treatment, while the changes in acid-detergent fibre components (cellulose and lignin) were much smaller, although evident. In vitro-dry matter digestibility of wheat straw was 22 % higher than that of cotton stalks, and its increase due to NaOH treatment was 50% and 30% for wheat straw and cotton stalks, respectively. In vivo digestibility of organic matter of wheat straw was increased from 0·47 to 0·59, and that of cotton stalks from 032 to 037. The increase was evident in all components except protein, in which digestibility was reduced. The increase in the metabolizable energy values of wheat straw from 6·86 to 7·45MJ/kg dry matter and that of cotton stalks from 4·77 to 5·10MJ/kg dry matter following sodium hydroxide treatment was not reflected in daily live-weight or carcass-weight gain in the feeding trial. The animals offered NaOH-treated roughages had significantly more fat trim, and more fat in the large depots. Including roughages in complete feeds revealed no advantage in metabolizable energy conversion into live weight. © 1980, British Society of Animal Science. All rights reserved.
Note:
Related Files :
עוד תגיות
תוכן קשור
More details
DOI :
10.1017/S0003356100039714
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
23097
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:56
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Scientific Publication
Chemical processing of wheat straw and cotton by-products for fattening cattle 3. Performance of animals receiving material in complete feeds
31
Levy, D., Nve Ya'ar Regional Experiment Station and the Volcani Center Agricultural Research Organization, Bet Dagan, Israel
Holzer, Z., Nve Ya'ar Regional Experiment Station and the Volcani Center Agricultural Research Organization, Bet Dagan, Israel
Folman, Y., Nve Ya'ar Regional Experiment Station and the Volcani Center Agricultural Research Organization, Bet Dagan, Israel
Chemical processing of wheat straw and cotton by-products for fattening cattle 3. Performance of animals receiving material in complete feeds
The fibrous roughages, wheat straw (WS) and cotton stalks (CS), were left untreated or treated with 30 g sodium hydroxide per kg, and residual alkali was either neutralized with sulphuric acid or left unneutralized. All roughages were pelleted and used either in complete feeds or separately. The effects of these treatments on the nutritive value of the roughages were examined in digestibility trials in vitro and in vivo, and in a 7·month feeding trial of a factorial arrangement of 2 × 3 × 2, in which the roughages constituted 350 g/kg of the diets. Approximately 150 g/kg of the neutral-detergent fibre (cell wall) constituents of both roughages was solubilized by sodium hydroxide treatment, while the changes in acid-detergent fibre components (cellulose and lignin) were much smaller, although evident. In vitro-dry matter digestibility of wheat straw was 22 % higher than that of cotton stalks, and its increase due to NaOH treatment was 50% and 30% for wheat straw and cotton stalks, respectively. In vivo digestibility of organic matter of wheat straw was increased from 0·47 to 0·59, and that of cotton stalks from 032 to 037. The increase was evident in all components except protein, in which digestibility was reduced. The increase in the metabolizable energy values of wheat straw from 6·86 to 7·45MJ/kg dry matter and that of cotton stalks from 4·77 to 5·10MJ/kg dry matter following sodium hydroxide treatment was not reflected in daily live-weight or carcass-weight gain in the feeding trial. The animals offered NaOH-treated roughages had significantly more fat trim, and more fat in the large depots. Including roughages in complete feeds revealed no advantage in metabolizable energy conversion into live weight. © 1980, British Society of Animal Science. All rights reserved.
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