Simulating the effects of grassland management and grass ensiling on methane emission from lactating cows
نویسندگان
چکیده
A. BANNINK *, M. C. J . SMITS, E. KEBREAB , J. A. N. MILLS , J. L. ELLIS , A. KLOP , J. FRANCE 4 AND J. DIJKSTRA 5 1Department of Animal Production, Animal Sciences Group, Edelhertweg 15, 8219 PH Lelystad, The Netherlands Department of Animal Science, University of California, Davis CA 95616, USA 3School of Agriculture, Policy and Development, University of Reading, Earley Gate, Reading RG6 6AR, UK 4Centre for Nutrition Modelling, University of Guelph, Guelph, Ontario N1G 2W1, Canada Animal Nutrition Group, Wageningen University, Marijkeweg 40, 6709 PG Wageningen, The Netherlands
منابع مشابه
The effect of degree of grass wilting prior to ensiling on performance and energy utilisation by lactating dairy cattle
Thirty lactating Holstein Friesian cows were used in a three treatment randomised block design experiment to investigate the influence of degree of grass wilting prior to ensiling on animal performance and energy utilisation. The three forage treatments were produced from perennial ryegrass swards either ensiled directly or mown, conditioned, spread and tedded to ensure rapid wilting, and ensil...
متن کاملruMinanT nuTriTiOn v 0643 Methane emissions from lactating and dry dairy cows fed diets differing in forage source and NDF concentration
Methane emission factors are lacking from different livestock species in various production states fed varying diets. The objectives of the present study were to measure effects of physiological state, silage type, and supplemental NDF on DMI, DM digestibility (DMD), and methane emissions of lactating and dry dairy cows using two 4 × 4 Latin squares (5-wk periods) with four lactating (114 DIM ±...
متن کاملIn vitro Ruminal Acid Load and Methane Emission Responses to Supplemented Lactating Dairy Cow Diets with Inorganic Compounds Varying in Buffering Capacities
Using 24 hours in vitro cultures of rumen microorganisms, this study investigates the effect of buffering capacity of 2 inorganic compounds (M1=119.43 and M2=116.50 meq/L) on the in vitro rumen acidogenic value (AV), medium pH, dry matter disappearance (INVDMD) and methane emission of lactating dairy cow diets containing various forage to concentrate ratios as 40:60 (FC40:60) and 30:70 (FC30:70...
متن کاملEffects of Incremental Dietary Levels of Ground Flaxseed on Milk Production, Ruminal Metabolism, and Enteric Methane Emissions in Organic Dairy Cows
Ground Flaxseed (Linum uitatissimum) is a lipid supplement that is commonly fed to dairy cows. It is believed that supplemental lipid can change the Fatty Acid (FA) composition in the milk, and decrease methane production. Twenty lactating organic Jersey cows, housed at the UNH Organic Dairy Research Farm (ODRF), were randomly assigned to five replicated 4 × 4 Latin squares to investigate the e...
متن کاملEffects of inoculation of high dry matter alfalfa silage on ensiling characteristics, ruminal nutrient degradability and dairy cow performance
The objective of this study was to determine the effects of a homolactic acid inoculant on ensiling characteristics and nutritive value of high dry matter (DM) alfalfa. The ensiling characteristics were determined by ensiling inoculated and untreated alfalfa haylage in mini-silos for 0, 2, 4, 8, 16 and 45 days. Two lactating cows fitted with ruminal fistulas were used to determine ruminal degra...
متن کامل