legumes

Bijeenkomst: EGF2015
Auteur: Gustavsson A-M. and Nadeau E.
ISBN: 978-9090-289-61-8
Jaar van uitgifte: 2015
Producttype: Paper
Forage is a major source of micronutrients for dairy cows. This study examined the concentrations of micronutrients in birdsfoot trefoil (Bf ), red clover (Rc), timothy (Ti) and meadow fescue (Mf ) at different sites, years and cutting dates. Mixtures of Bf+Ti, Rc+Ti and Rc+Mf were established at Skara (58°21’N; 13°08’E) and Umeå (63°45’N; 20°17’E) in Sweden. First-year leys (Umeå 2005, Skara 2005 and 2007) were cut on three occasions in spring relative to the maturity stage of timothy: one week before heading, at heading and one week after heading. Summer growth was cut six weeks after each of the three occasions in spring growth. The results show that there was a need for Cu supplementation in all treatments because of low Cu concentration. The relatively high Mo concentrations compared to the Cu concentration in both grasses at Skara, in Mf in second cut at Umeå, and in Bt in the second cut at Skara may further increase the demand for Cu supplementation in dairy cow rations because there is a risk that Cu can be bound to a sulphate-Mo-complex in the rumen. The Zn concentration was lower than required for dairy cows, except for the mixture with Ti and Rc in the second cut at Umeå. For Mn and Fe, concentration levels were appropriate for expected dairy cow requirements for all treatments.

Bijeenkomst: EGF2015
Auteur: Mosquera-Losada M.R., Rigueiro-Rodríguez A., Ferreiro-Domínguez N.
ISBN: 978-9090-289-61-8
Jaar van uitgifte: 2015
Producttype: Paper
Animal production should be mostly based on farm resources as this reduces animal product costs. Forage legumes like peas are adequate for fulfilling part of the animals’ protein needs. Fertiliser prices have also added to high input costs for farmers in recent years, and this make the use of manures produced on farms more important. This study aims at evaluating the effect of two different rates of pig and beef cattle manure on forage pea yield, compared with the traditional mineral fertiliser used in the area. An analysis of the manures was carried out showing that pig manure has a higher level of nutrients than cattle manure. Both manures resulted in a higher seed yield than was obtained by using mineral fertiliser.