+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Enteric and manure-derived methane emissions and biogas yield of slurry from dairy cows fed grass silage or maize silage with and without supplementation of rapeseed

Enteric and manure-derived methane emissions and biogas yield of slurry from dairy cows fed grass silage or maize silage with and without supplementation of rapeseed

Livestock Science 165: 189-199

The aim of this study was to investigate the effect of three different dietary strategies on milk production and composition, enteric CH4 emissions, slurry storage losses of CH4 and total emissions of CH4 with and without biogas production. Fifty-four cows were allocated to three diets according to parity and days in milk. Two diets were based on maize silage with (MS+) or without (MS-) supplementation of crushed rapeseed, and the third diet was based on late cut grass silage without supplementation of crushed rapeseed (GS-). Dry matter intake, milk yield and composition were measured. Enteric methane emissions were measured on 24 cows by means of indirect calorimetry. Slurry was collected the last 10 days of the experiment. Ultimate biogas yield, CH4 emissions at different storage temperatures and yield in a thermophilic biogas digester were determined for the three slurries. Dry matter intake was 22.5 kg/day on MS- and MS+ which was significantly higher than the 20.7 kg/day on GS-. Yield of energy corrected milk (ECM) was 2.8 and 2.5 kg higher on MS+ compared with GS- and MS-, respectively. Enteric CH4 emissions related to dry matter intake or gross energy intake were highest for GS-. Supplementation of crushed rapeseed did not affect enteric CH4 emissions. Ultimate biogas yield and yield of CH4 in the digester were higher for MS+ and MS- than for GS-. Storage emissions from slurry increased with increasing storage temperature. The average total CH4 per kg ECM for the three treatments (mean +/- standard deviation) was 25.3 +/- 2.5, 26.8 +/- 3.3 and 29.0 +/- 4.2 L CH4/kg ECM if manure was stored at 10 degrees C, 15 degrees C or 20 degrees C, respectively. When the slurry was digested in a laboratory scale biogas plant, the lowest total CH4 emissions per kg ECM were observed for MS+ (20.5 L CH4/ECM) and the highest for GS- (24.3 L CH4/ECM) corresponding to the enteric emissions of CH4. It was found that MS+ had a higher yield and a lower milk fat concentration than MS and GS-. Although MS+ had a lower milk fat concentration, the ECM yield was significantly higher for MS+ than for the two other diets. It was furthermore concluded that feed ration induced reductions in enteric methane emissions might be counteracted or complemented by changed methane emissions from slurry storage. The slurry biogas yield was highest (per kg ECM) from cows fed MS+ which also gave the lowest total methane emissions per kg ECM.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 066285923

Download citation: RISBibTeXText

DOI: 10.1016/j.livsci.2014.04.011

Related references

A comparison of low starch maize silage and grass silage and the effect of concentrate supplementation of the forages or inclusion of maize grain with the maize silage on milk production by dairy cows. Livestock Production Science 57(2): 95-111, 1999

The influence of grass silage-to-maize silage ratio and concentrate composition on methane emissions, performance and milk composition of dairy cows. Animal 9(6): 983-991, 2015

Enteric methane emissions from dairy cows fed different proportions of highly digestible grass silage. Acta Agriculturae Scandinavica, Section A - Animal Science 61(3): 128-136, 2011

Voluntary intake and milk production obtained with maize silage, grass silage, prewilted grass silage and grass hay by dairy cows. 1975

Voluntary intake and milk production obtained with maize silage, grass silage, prewilted grass silage and grass hay fed to dairy cows. Revue de l' Agriculture 28(2): 337-355, 1975

Effects of carbohydrate type or bicarbonate addition to grass silage-based diets on enteric methane emissions and milk fatty acid composition in dairy cows. Journal of Dairy Science 101(7): 6085-6097, 2018

Selenium supplementation and selenium status of dairy cows fed diets based on grass, grass silage or maize silage. Journal of Animal Physiology and Animal Nutrition 86(3/4): 74-82, 2002

Enteric and manure-derived methane and nitrogen emissions as well as metabolic energy losses in cows fed balanced diets based on maize, barley or grass hay. Animal 5(3): 450-461, 2011

Studies on the high grass m silage feeding of dairy cows in nemuro kushiro japan district v suitable level of concentrate supplementation for the cows fed much amount of grass m silage. Bulletin of Hokkaido Prefectural Agricultural Experiment Stations (16): 80-95, 1967

Feeding maize silage to dairy cows: implications for methane emissions. Proceedings of the New Zealand Society of Animal Production 65: 356-361, 2005

Milk production and methane emissions from dairy cows fed a low or high proportion of red clover silage and an incremental level of rapeseed expeller. Livestock Science 197: 73-81, 2017

Performance, digestion, nitrogen balance, and emission of manure ammonia, enteric methane, and carbon dioxide in lactating cows fed diets with varying alfalfa silage-to-corn silage ratios. Journal of Dairy Science 98(1): 418-430, 2015

Napier grass silage vs. maize silage, with hay made from molasses grass (Melinis minutiflora) for perennial soya bean, as roughage for dairy cows. Bolm Ind. anim, 71. 27/28: 255-275, 1970

Plant oil supplements reduce methane emissions and improve milk fatty acid composition in dairy cows fed grass silage-based diets without affecting milk yield. Journal of Dairy Science 101(2): 1136-1151, 2018

Maize silage for dairy cows: mitigation of methane emissions can be offset by land use change. Nutrient Cycling in Agroecosystems 89(3): 413-426, 2011