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פותח על ידי קלירמאש פתרונות בע"מ -
The relative value of concentrates and roughage for fattening cattle
Year:
1971
Source of publication :
Animal Production
Authors :
הולצר, צבי
;
.
Volume :
13
Co-Authors:
Levy, D., The Volcani Institute of Agricultural Research, Bet Dagan, Israel
Holzer, Z., The Volcani Institute of Agricultural Research, Bet Dagan, Israel
Facilitators :
From page:
569
To page:
579
(
Total pages:
11
)
Abstract:
In three similar experiments, 2 or 3 kg of a commercial concentrate mixture, forming part of a high concentrate ration, were replaced by an equal weight of dry matter of one of four roughages: hay, straw, silage and green soilage. The metabolizable energy content of the concentrate was 2-4 Mcal/kg. Expected daily gain was calculated according to the following energy systems: Scandinavian feed units (SFU), starch equivalent (SE), total digestible nutrients (TDN), the U.K. Agricultural Research Council system (ARC), and the U.S. National Research Council net energy system (NRC). The replacement of 2 kg of concentrate significantly reduced daily gain only in the straw treatment. Reduction of the fat content of the carcasses was significant for all roughage treatments. The differences between the observed daily gain and the expected, as calculated by the SFU, SE and NRC systems, were highly significant, while those between the observed and those cal culated by the TDN and ARC systems were not significant. The TDN system overestimated the nutritional value of the roughages, while the SFU and SE systems underestimated it. © 1971, British Society of Animal Science. All rights reserved.
Note:
Related Files :
עוד תגיות
תוכן קשור
More details
DOI :
10.1017/S0003356100000039
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
21969
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:48
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Scientific Publication
The relative value of concentrates and roughage for fattening cattle
13
Levy, D., The Volcani Institute of Agricultural Research, Bet Dagan, Israel
Holzer, Z., The Volcani Institute of Agricultural Research, Bet Dagan, Israel
The relative value of concentrates and roughage for fattening cattle
In three similar experiments, 2 or 3 kg of a commercial concentrate mixture, forming part of a high concentrate ration, were replaced by an equal weight of dry matter of one of four roughages: hay, straw, silage and green soilage. The metabolizable energy content of the concentrate was 2-4 Mcal/kg. Expected daily gain was calculated according to the following energy systems: Scandinavian feed units (SFU), starch equivalent (SE), total digestible nutrients (TDN), the U.K. Agricultural Research Council system (ARC), and the U.S. National Research Council net energy system (NRC). The replacement of 2 kg of concentrate significantly reduced daily gain only in the straw treatment. Reduction of the fat content of the carcasses was significant for all roughage treatments. The differences between the observed daily gain and the expected, as calculated by the SFU, SE and NRC systems, were highly significant, while those between the observed and those cal culated by the TDN and ARC systems were not significant. The TDN system overestimated the nutritional value of the roughages, while the SFU and SE systems underestimated it. © 1971, British Society of Animal Science. All rights reserved.
Scientific Publication
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