Effects of multiple antibiotics residues in broiler manure on composting process

The practices of risk communication on the problem of residues of antibiotics in foodstuffs in modern Russia are described based on the results of in-depth expert interviews. Several risk communication problems connected with the lack of relevant information about the theme, low efficiency of traditional information channels, and insufficient activity of key informants have been identified. The algorithm and basic principles of risk communication between authorities, food producers and consumers are proposed. It is proved that using of social media, social networking services and «new opinion leaders» (such as bloggers) can increase the effectiveness of health risks communication in modern society.

Download Full-text

Mode d’utilisation des antibiotiques dans les élevages de bovin laitier sédentaires au nord-ouest du Bénin

Journal of Animal & Plant Sciences ◽

10.35759/janmplsci.v42-2.2 ◽

2019 ◽

Vol 42.2 ◽

pp. 7198-7206

Author(s):

Mensah Serge Egide Paulin ◽

Sessou Philippe ◽

Nata Christie ◽

Adjahoutonon Koomlan Yélindo Kadjinou Brice ◽

Lahamy Olivier ◽

...

Keyword(s):

Antibiotic Treatment ◽

Dairy Farms ◽

Cow Milk ◽

Veterinary Services ◽

Cross Sectional Survey ◽

Cross Sectional ◽

Antibiotics Residues ◽

Lait De Vache

Une enquête transversale a été faite pour évaluer l’utilisation des antibiotiques dans les élevages de production de lait de vache des communes de Natitingou, Kérou, Pehunco, Kouandé et Djougou au nord-ouest du Bénin. Sur 452 éleveurs enquêtés, 347 (76,7%) utilisaient des antibiotiques sans assistance vétérinaire pour le traitement des affections respiratoires (19,0%), les entérites néo natales (19,0%), les dermatoses (18,0%), les plaies (17,0%), les mammites (17,0%) ou d’autres maladies (10,0%). Les tétracyclines (100,0%), les pénicillines (100,0%), les sulfamides (47,1%) et les macrolides (16,8%) étaient les familles d’antibiotiques les plus utilisées. 35,6% des éleveurs achetait les antibiotiques au marché contre 84,4% chez un vétérinaire et 35,1% les achetait sans le conseil d’un vétérinaire. Plus de 50% des éleveurs ne consulte pas un vétérinaire pour l’administration des antibiotiques ou n’adapte jamais la posologie selon le poids des bovins traités. Enfin, 83,6% des éleveurs faisaient traire les vaches sous traitement antibiotiques tout comme les vaches sans traitement. Les services vétérinaires du Bénin devraient mieux contrôler de l’utilisation des antibiotiques en production de lait de vache et sensibiliser les éleveurs sur le risque représenté par la présence de résidus d’antibiotiques dans le lait de vache consommé. ABSTRACT A cross sectional survey was conducted to assess the use of antibiotic in dairy farms in the municipalities of Natitingou, Kérou, Pehunco, Kouandé and Djougou in northwestern Benin. Three hundred and Forty seven 347 (76.7%) of the 452 surveyed farmers used antibiotics without veterinary assistance against neonatal enteritis (19.0%), dermatitis (18.0%), wounds (17.0%), mastitis (17.0%) or others diseases (10.0%). Tetracyclines (100.0%), penicillins (100.0%), sulfonamides (47.1%) and macrolides (16.8 %) and were the most used families of antibiotics. 35.6% of breeders bought antibiotics at the market against 84.4% at a veterinarian and 35.1% bought them without the advice of a veterinarian. More than 50% of breeders do not consult a veterinarian for the administration of antibiotics or never adapt the dosage according to the weight of the treated cattle. Finally, 83.6% of breeders milked cows under antibiotic treatment as cows without treatment. Benin veterinary services should more control the use of antibiotics in dairy farms and inform the farmer about the risk associated with the presence of antibiotics residues in consumed cow milk.

Download Full-text

Assessment of content and chemical forms of arsenic, copper, lead, and chromium in sewage sludge compost as affected by various bulking agents

Main Group Metal Chemistry ◽

10.1515/mgmc-2020-0006 ◽

2020 ◽

Vol 43 (1) ◽

pp. 56-66

Author(s):

Mahboub Saffari ◽

Vahid Reza Saffari ◽

Hojatollah Khabazzadeh ◽

Hormazd Naghavi

Keyword(s):

Sewage Sludge ◽

Total Concentration ◽

Bulking Agents ◽

Chemical Forms ◽

Organic Fraction ◽

Specific Kind ◽

Composting Process ◽

Mobility Factor ◽

Arsenic Copper ◽

Different Levels

AbstractIn current study, the effect of various organic substances as bulking agents (BAs) including wheat straw, pistachio hull wastes, and tree leaves at different levels (10, 25, 45% v/v) were investigated on total concentration and chemical forms of Cu, Pb, Cr, and As in sewage sludge (SS) compost prepared by windrow method. According to the results, the composting process (with/without BAs), due to losses of SS mass and volume, increased the total concentration of heavy metals (HMs) compared to the un-composted SS sample (RSS). Evaluation of HMs chemical forms in prepared compost sample without BAs application (CSS) showed that the composting process reduced the mobility factor of As (from 28% to 20%), Pb (from 11.6% to 9.3%), and Cr (from 14.5% to 9.2%) compared to the RSS. Application of three BAs considerably decreased the mobility factor of As (17.5-18.8%), Pb (4.8-7.9%), and Cr (1.4-6.8%) compared to CSS and RSS. Changes of Cu mobility in prepared compost samples showed an unclear trend, however in some treatments, due to transferred organic fraction into exchangeable and carbonate fractions, increasing of this factor was obvious. Generally, the composting appeared to reduce As, Pb, and Cr availability by stabilizing the three metals and making them more stable and less mobile. In addition, the BAs application effect on HMs behavior of SS compost samples were so different and no specific kind of BAs can be recommended as a superior BAs in SS composting process.

Download Full-text