Vol. 8 & Issue 2 ; Section D : Environmental Sciences

Date : Feb.2018 to April 2018

 

Environmental Assessment of the Production of Nile tilapia Oreochromis niloticus (L.) in Family Fish Farming System in Côte d'Ivoire

Amian A F, Wandan N Eboua, Ble M C, Toko ImorouI, Mikolasek O, Efole Ewoukem T

JCBPS; Section D; February 2018 – April - 2018, Vol. 8, No.2; 042-066

[DOI: 10.24214/jcbps.D.8.2.04266.]

  • Abstract

    This study was conducted in Cote d’Ivoire as part of a three steps study to assessing the environmental impacts of fish production in extensive farming using rice bran feedings, through a life cycle analysis. The feeding results indicated that processed rice bran feeds did not show better yield compared to the non-processed rice bran. Using the nutritional balance method, the rate of N and P uptake by fish were 8.5% - 18% and 21.5% while it was 14.5%-18% and 3%-4.5% using the nutritional balance method. The most important environment potential impacts were non-renewable energies use (84.80 – 119.55%), global warming (5.51 -7.43%), and eutrophication (-26.83 – 8.40%) The impact of one ton of “ready to sale” Tilapia fish ranged from -477,90 to 963,11 kg PO4-eq for eutrophication, 1451,77 to 846,51 kg CO2-eq for global warming potential, and 1451,93 to 10498,03 MJ for non-renewable energy use. For the potential impact for eutrophication,the most important contribution came from the production of fish at the farm level (> 96%) while for non-renewable energies use, rice bran contributed significantly to this impact (47-81%) followed by infrastructures (47 - 81%). For global warming, rice bran production is the major contributor (59 - 76%). These results indicated that LCA is suited for the analysis of various flows of materials and energies that cause environmental pollution of extensive fish farming in Côte d'Ivoire.

Prevalence of mastitis in dairy cows in selected areas of Sylhet district, Bangladesh

Jannatul Mawa Momu, Mahfuz Rahman Adnan, Mowdudul Hasan Talha, Mamun Ur Rahman, Mustaq Ahmad, Akash Khasnobish, Md. Abdus Sabur, Md. Altafur Rahman, Md. Anwar Hossain,

JCBPS; Section D; February 2018 – April - 2018, Vol. 8, No.2; 067-075

[DOI: 10.24214/jcbps.D.8.2.06775.]

  • Abstract

    This study was carried out to determine the prevalence of mastitis in lactating Dairy Cow at District Dairy Farms in Sylhet and UVH, at Jaintapur during the period of January 2016 to December 2016. Mastitis was most frequently seen in cross breed cows. In Jaintapur Upazilla, most of cows were indigenous, but there were many farmers rear cross breed cow for the purpose of selling milk in market. In Dairy Farm, all cows were cross breed. The overall prevalence was higher in crossbred cows than indigenous cows. The prevalence of mastitis was higher in advancing age and in lactation period. The cows were more prone to mastitis during 1st month of lactation. There was significant relationship between prevalence of mastitis and associated risk factors like general physical condition, herd size, frequency of dung removal, floor drainage quality and condition of floor. Reproductive diseases and periparturiant diseases showed higher incidence of mastitis in cows. The overall prevalence of mastitis at Jaintapur was 7.15%. The prevalence of mastitis of dairy cows in Jaintapur Upazilla was more in rainy season and less in winter season. The prevalence of mastitis was 3.47% in summer season, 11.52% in rainy season and 5% in winter season. The overall prevalence of mastitis at Dairy farm was 6.91%. The prevalence of mastitis in dairy farm was more in rainy season and less in summer season. The prevalence of mastitis was 4.97% in summer season; 16.53% in rainy season and 5.29% in winter season