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| 11. |
ECONOMIC ASPECTS OF THE INCLUSION OF DRIED GRASS IN DAIRY‐COW RATIONS |
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Grass and Forage Science,
Volume 26,
Issue 1,
1971,
Page 63-70
J. R. Crabtree,
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PDF (2846KB)
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摘要:
ABSTRACTA linear programming model was formulated to calculate a least‐cost ration for lactating dairy cows with respect to certain nutritional constraints. The model was used to derive the price at which dried forage of a stated digestihle crude protein content (DCP) and metabolizable energy content (ME) would just become included in a least‐cost feed. Marginal costs for DCP and ME of £0.057/ kg and £0.0096/Mcal, respectively, were calculated. These were found to be fairly Insensitive to changes in milk yield. Inclusion prices were slightly lower than current market p
ISSN:0142-5242
DOI:10.1111/j.1365-2494.1971.tb00635.x
出版商:Blackwell Publishing Ltd
年代:1971
数据来源: WILEY
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| 12. |
BOOK REVIEWS |
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Grass and Forage Science,
Volume 26,
Issue 1,
1971,
Page 71-71
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PDF (130KB)
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摘要:
Books review in this article:HANSON, A. A.; JUSKA, F. V.Turfgrass science.STEWARD, F. C. [Ed.]Plant physiology: A treatise. Vol. 5. Analysis of growth. A. Behaviour of plants and their organs. B. The responses of cells and tissues in cultureCAMPBELL, J. B. [Compiler]Experimental methods for evaluating herhage
ISSN:0142-5242
DOI:10.1111/j.1365-2494.1971.tb00636.x
出版商:Blackwell Publishing Ltd
年代:1971
数据来源: WILEY
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| 13. |
CONVERSION TABLES FOR BRITISH AND METRIC WEIGHTS AND MEASLIRES |
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Grass and Forage Science,
Volume 26,
Issue 1,
1971,
Page 73-73
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PDF (59KB)
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ISSN:0142-5242
DOI:10.1111/j.1365-2494.1971.tb00637.x
出版商:Blackwell Publishing Ltd
年代:1971
数据来源: WILEY
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首页
Volume 26 issue 1