Ensiled pulp from biorefining increased milk production in dairy cows compared with grass-clover silage

Journal of Dairy Science
Vinni Kragbæk DamborgM R Weisbjerg

Abstract

The objective of the current study was to examine the effect of fibrous pulp and partial substitution of soybean meal with green protein concentrate from biorefining of grass-clover on dry matter intake, milk production, digestibility, and eating behavior in dairy cows compared with untreated grass-clover silage and soybean meal. Biorefining of grass-clover occurred right after harvest in a production-scale twin-screw press. The twin-screw pressing separated the grass-clover into a pulp and a green juice. The green juice was fermented using lactic acid bacteria for protein precipitation and then decanted, and the precipitate was heat dried to constitute the green protein concentrate. From the same field, grass-clover was harvested 6 d later due to rainy weather and was prewilted before ensiling. The pulp and the grass-clover were ensiled in bales without additives. The production trial consisted of an incomplete 6 × 4 Latin square trial (3-wk periods; 12 wk total) including 36 lactating Holstein cows. The trial had 6 treatments in a 2 × 3 factorial design with 2 forage types (grass-clover silage and pulp silage) and 3 protein treatments (low protein, high protein with soybean meal, and high protein with a mixture of soybean mea...Continue Reading

References

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Jul 4, 2018·Journal of Agricultural and Food Chemistry·Mohammed Rashed ChowdhuryMartin Riis Weisbjerg

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Citations

Dec 24, 2019·Animal : an International Journal of Animal Bioscience·O SavonenM Rinne

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