A biogas plant is an anaerobic digester that produces biogas from organic materials such as animal waste,sewage slurry, vegetable waste and others waste materials. Sahiwal Cattle Farm, College of veterinaryScience, AAU, Khanapara has developed a small-scale biogas plant in farm complex. The objectives of thisplant is to promote green technology and zero waste concepts on animal farming and to mitigate adverseeffects on the environment due to unsystematic management of animal waste disposal. The biogas producedis used as fuel for biogas stove, biogas water heater. Furthermore, the residual solid waste produced at theend of the process has been used as organic fertilizer in the fodder plot of the sahiwal farm complex.Although the hydro-carbons which are derived from direct chemical processes, bio-gas is produced througha bio-chemical process in which some bacteria convert the biological wastes into useful bio-gas comprisingmethane through chemical interaction. Such methane gas is renewable through continuous feeding ofbiological wastes and which are available in plenty in rural areas in the country. Since the useful gasoriginates from biological process, it has been termed as bio-gas in which methane gas is the main constituent.The gas which is produced by the above process in a bio-gas plant does not contain pure methane and hasseveral impurities containing methane, carbon dioxide, Nitrogen, Hydrogen, Carbon monoxide, Oxygenand Hydrogen sulphide.
Background: The favorable climatic condition and fertile land resources of Assam plays a significant role for agricultural and livestock production in the region. Assam is one of the regions of north-eastern India, famous for different varieties of indigenous ducks reared by farmers under traditional system. Due to hot-humid climatic condition of Assam along with extensive availability of resources like ponds, river, marshy wet lands etc. provides a suitable natural habitats for duck rearing in rural areas of the states. Pati Duck was recognized as a breed by the National Bureau of Animal Genetic Resources in the year 2017. Methods: The study was conducted at Govt. Duck and Poultry Farm, Joysagar, Sivasagar district of Assam. Ducklings were hatched at the Hatchery unit present at the farm. Eggs were been collected from different farmer’s house where they reared ducks in the backyard systems. Ducklings born were been studied for the different morphological characteristics and their body weight were been measured in weekly interval. All ducks received adlibitum feed from day one onwards. Result: Pati ducks were divided into five major groups based on their body coat colour. They are Whitish light brown, White, Blackish brown, Black and white and Khaki coloured. The different body measurement shows the male to be superior to the females in different parameters with different coat colour. The major colour pattern of bill, shank and feet was found to be yellow, whereas skin was mostly white in colour and plumage colour pattern found to be white, black and brown in different parts of the body.
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