Characterization of Mineral Element Profiles in Animal Waste and Tissues from Cattle Fed Animal Waste. I. Heifers Fed Broiler Litter

Livestock management practices have evolved considerably in the E. E. C. during the last two decades. The development of intensive confined rearing without using litter results in the production of vast quantities of animal waste slurries, which create serious disposal problems. Yet these wastes possess a fertilizing value that should be used as much as possible to replace increasingly expensive chemical fertilizers. The Commission of the European Communities sponsored a coordinated research programme on livestock effluents to assess the levels of fertilizing elements in slurries and to establish mathematical models aimed at predicting environmental effects as well as specifying the economic aspects of the land spreading of slurries, and to enable livestock production management to be included in the context of planning and regional policies. The main results obtained on the characterization of slurry and on its use for arable crops, grassland and forage crops are presented, together with some recommendations for administrative action.

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Criterious preparation and characterization of earthworm-composts in view of animal waste recycling. Part I. Correlation between chemical, thermal and FTIR spectroscopic analyses of four humic acids from earthworm-composted animal manure

Journal of the Brazilian Chemical Society ◽

10.1590/s0103-50532000000200011 ◽

2000 ◽

Vol 11 (2) ◽

Cited By ~ 12

Author(s):

Antonio S. Mangrich ◽

Maria A. Lobo ◽

Carlos B. Tanck ◽

Fernando Wypych ◽

Edina B. S. Toledo ◽

...

Keyword(s):

Humic Acids ◽

Animal Manure ◽

Waste Recycling ◽

Animal Waste ◽

Spectroscopic Analyses

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Quali/quantitative characterization of biogas produced in batch digesters supplied with six distinct substrates

Engenharia Agrícola ◽

10.1590/s0100-69162011000400017 ◽

2011 ◽

Vol 31 (4) ◽

pp. 795-802 ◽

Cited By ~ 1

Author(s):

João A. Galbiatti ◽

Anaira D. Caramelo ◽

Denise A. Chiconato ◽

José R. Araújo ◽

Eliana A. B. Girardi

Keyword(s):

Biogas Production ◽

State University ◽

Quantitative Characterization ◽

Broiler Litter ◽

Paulo State ◽

Wood Shavings ◽

Peanut Hulls ◽

Peanut Hull

The present research was carried out at the DER/FCAV, São Paulo State University - Brazil, with the purpose of analyzing the quantity and quality of biogas produced by six types of substrates. The substrates used in the anaerobic digestion were characterized as: 1- Litter of broiler (LB); 2- Grinded broiler litter (GBL); 3- Broiler litter with wood shavings (BLWS); 4- Grinded broiler litter with wood shavings (GBLWS); 5- Broiler litter with peanut hulls (BLPH); 6- Grinded broiler litter with peanut hull (GBLPH). It was concluded from the collected data that: the (GBL) substrate showed a superior biogas accumulated production in relation to the other substrates, while the BLWS presented an inferior accumulated production; the grinded substrates showed higher quantities of accumulated biogas in relation to the non-grinded substrates, except for GBLPH, with 20.9 m³ inferior than BLPH; the period of maximum biogas production started from 45 to 60 days, declining after 120 days; at 57 days after filling up the digesters the biogas produced had levels of CH4 superior than 53%, and from 99 days all of them produced biogas with levels of CH4 superior than 70%; LB and GBL presented higher concentrations of CH4 in the biogas.

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