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Sammanfattning

Sixty-three younger (Exp. 1, live weight (LW) 119 kg) and 48 older (Exp. 2, LW 414 kg) pen-housed dairy steers were used in twelve-week long trials to investigate effects of maturity stage of whole-crop barley silages (WCBS) on animal performance. Precision-chopped WCBS harvested at heading (H), milk- (M) and dough stage (D) of maturity were fed ad libitum and supplemented with concentrates at 0.6-1 kg head-1 d-1. Feed intake and LW were registered continuously and data were analysed by ANOVA using GLM. Silage DM intake was highest for D in both experiment; 20.5a vs. 19.1b and 17.7c g kg-1 LW d-1 in Exp. 1 and 20.2a vs. 17.5b and 17.1b g kg-1 LW d-1 in Exp. 2 for D, M and H silages, respectively (P<0.001). Feed conversion, expressed as kg silage DM intake kg-1 LW gain, was lowest for H in Exp. 1; 3.7b vs. 4.4a and 4.3a kg kg-1 and lower than M in Exp. 2; 8.6b vs. 11.8a and 10.7ab kg kg-1 for H, M and D silages, respectively (P<0.05). The results indicate that WCBS should be harvested at heading or dough stage for good animal performance

Nyckelord

whole-crop cereal silage; dairy steers; feed intake

Publicerad i

Grassland Science in Europe
2008, volym: 13, sidor: 852-854
Titel: Biodiversity and Animal Feed : Future Challenges for Grassland Production
Utgivare: Organising Committee of the 22nd General Meeting of the European Grassland Federation and Swedish University of Agricultural Sciences

Konferens

The 22nd General Meeting of the European Grassland Federation

SLU författare

UKÄ forskningsämne

Husdjursvetenskap
Veterinärmedicin

Publikationens identifierare

  • ISBN: 978-91-85911-47-9

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/19172