Effect of feeding wet pressed beet pulp on milk yield of dairy cows.
In: Journal of Animal Science, Jg. 84 (2006-08-02), S. 83-83
academicJournal
Zugriff:
Beet pulp is the solid residue remaining after sugar is extracted from sugar beets. Typically, the pulp is mechanically pressed to 25% DM content and then artificially dried for storage and feeding. Wet pressed beet pulp (WBP) is an inexpensive alternative that would expend less fossil fuel during processing. The objective of this study was to determine the effect of feeding WBP (24.3% DM, 11.1% crude protein, 28.4% ADF, 46% NDF) on milk yield of dairy cows. Dairy cows (n = 379) greater than 30 days in milk were randomly allotted to receive a diet that contained WBP or a control diet (CON) for 11 weeks. On a dry basis, the WBP ration contained 1.35 kg of wet pressed beet pulp, 6.2 kg earlage, and .95 kg corn silage, whereas the CON ration contained 7.2 kg earlage and 1.2 kg corn silage. All other feedstuffs and amounts fed (dry basis) were the same for the treatment and control groups. Samples of the WBP TMR averaged 54.8% DM; 16.2% crude protein; 21.4% ADF; 32.8% NDF. Samples of the CON TMR averaged 58.3% DM; 16.9% crude protein; 20.3% ADF; 30.9% NDF. All cows were milked 3x, and milk yield data was collected electronically at each milking. Seven day average milk yield was analyzed as repeated measures ANOVA, using the Mixed Procedures of SAS. Separate analyses were carried out for cows between 30 to 135 days in milk (DIM) and 136 to 305 DIM. Milk yield did not differ between the WBP and CON groups (48.2 ± .71 kg/d vs. 48.7 ± .78 kg/d, mean ± SEM, respectively) for cows between 30 to 135 DIM. For cows between 136 and 305 DIM, milk yield differed (P<.05) between the WBP and CON groups (45.7 ± .87 kg/d vs. 41.7 ± 1.07 kg/d, mean ± SEM, respectively). Results from this study suggest that the inclusion of WBP in the diet of lactating dairy cows increased the milk yield of cows between 136 and 305 DIM, but not cows between 30 to 135 DIM. [ABSTRACT FROM AUTHOR]
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Effect of feeding wet pressed beet pulp on milk yield of dairy cows.
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Autor/in / Beteiligte Person: | Dalton, J. C. ; Rimbey, N. ; Shafii, B. ; Price, W. J. ; McGuire, A. ; Costesso, D. ; Stewart, J. |
Zeitschrift: | Journal of Animal Science, Jg. 84 (2006-08-02), S. 83-83 |
Veröffentlichung: | 2006 |
Medientyp: | academicJournal |
ISSN: | 0021-8812 (print) |
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