Effects of dehydrated lucerne and soya bean meal on milk production and composition, nutrient digestion, and methane and nitrogen losses in dairy cows receiving two different forages

Animal : an International Journal of Animal Bioscience
M DoreauC Martin

Abstract

Dehydrated lucerne is used as a protein source in dairy cow rations, but little is known about the effects of lucerne on greenhouse gas production by animals. Eight Holstein dairy cows (average weight: 582 kg) were used in a replicated 4 × 4 Latin square design. They received diets based on either maize silage (M) or grass silage (G) (45% of diet on dry matter (DM) basis), with either soya bean meal (15% of diet DM) completed with beet pulp (15% of diet DM) (SP) or dehydrated lucerne (L) (30% of diet DM) as protein sources; MSP, ML, GSP and GL diets were calculated to meet energy requirements for milk production by dairy cows and degradable protein for rumen microbes. Dry matter intake (DMI) did not differ among diets (18.0 kg/day DMI); milk production was higher with SP diets than with L diets (26.0 v. 24.1 kg/day), but milk production did not vary with forage type. Milk fatty-acid (FA) composition was modified by both forage and protein sources: L and G diets resulted in less saturated FA, less linoleic acid, more trans-monounsaturated FA, and more linolenic acid than SP and M diets, respectively. Enteric methane (CH4) production, measured by the SF6 tracer method, was higher for G diets than for M diets, but did not differ w...Continue Reading

References

Aug 1, 1997·Journal of Dairy Science·T R CallawayG M Hill
Mar 31, 2009·Journal of the American Dietetic Association·Natalie D RiedigerMohammed H Moghadasian
Nov 4, 2010·Journal of Environmental Quality·V K VaddellaJ L Ullman
Mar 23, 2012·Animal : an International Journal of Animal Bioscience·A M GutiérrezS Martínez-Subiela
Mar 1, 2010·Animal : an International Journal of Animal Bioscience·C MartinM Doreau
Dec 1, 2008·Animal : an International Journal of Animal Bioscience·K E KliemD I Givens
Jul 1, 2010·Animal : an International Journal of Animal Bioscience·K J ShingfieldY Chilliard
Oct 4, 2012·Animal : an International Journal of Animal Bioscience·R L M SchilsG L Velthof

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Citations

Mar 12, 2019·Journal of Pathology and Translational Medicine·Ae Ri AnMyoung Ja Chung
Oct 7, 2015·Journal of Animal Science·J GuyaderC Martin

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