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Maharaja Ganga Singh University (2013)

Studies on industrial mineral wastes of arid region of Western Rajasthan and their utilization in live stock

Sawal, Renu

Titre : Studies on industrial mineral wastes of arid region of Western Rajasthan and their utilization in live stock

Auteur : Sawal, Renu

Université de soutenance : Maharaja Ganga Singh University

Grade : Doctor of Philosophy (PhD) 2013

sommaire partiel
Certain mineral elements are required for normal physiological functions of livestock and human beings. Staple diets in human beings ; pasture resources and forages contain substantial quantities minerals which can cater to requirements of non producing individuals/ animals. Ca and P are essentially required for dairy animals in large amounts than other minerals, secondly over 70% of total minerals in the body are Ca and P, while 99% of Ca and over 80%) P found in the animal is in the bones and teeth. Higher quantities are required during growth, pregnancy, lactation and for physical work as in case of athletes/ draft animals. Ca and P are major constituents of milk, thus both elements are required in higher quantities in the supplements compared to other elements. Apart from drinking water, supplementary feeds, cultivated forages and browse materials from fallow lands/ pastures are used as resource by the animals which form primary source of minerals in domesticated animals. Major diet of milch animals in the western arid region is poor quality crop residues as wheat straw which are poor source of minerals. Soil of the region is also deficient in macro and micro minerals. Deficiency of these minerals in the diet can be ameliorated by supplementation. Price of the supplements varies depending use of cost of salts used for its preparation and their purity. Feed grade chemicals are less expensive however, mineral wastes of ores originating from excavation/ processing industries are comparatively cheaper resources. Such resources need to be tapped for their potential and availability, with a caution to monitor presence/ levels of toxic elements in these resources. Higher contents of Ca and P are recommended in poultry feeds for egg production and in case of domesticated ruminants to take care of higher requirements during growth, milk production, work etc. This increases cost of input as supplements are expensive. Cost of mineral supplements varies depending upon the source of ingredients used for their preparation. Mineral wastes are generated in all processes related to excavation and processing in the industries, some among them are rich source of minerals and these could be effectively used for formulation of mineral supplements/ mixtures for human/ livestock. Wastes generated by limestone and associated industries are often dumped unscrupulously resulting in environmental problems and health hazards in the vicinity, in some cases adverse effects on the fertility of land have also been observed. Some of the minerals wastes may contain salts of heavy metals which could be harmful for the work force engaged in these industries. Drainage problems are also likely to arise when dumped along the drain passage ; contamination of water resources, air pollution as the dry powder becomes air borne on windy days. Problems relating to extension of mines arise when wastage of valuable natural resources of calcareous stones are dumped in mining area, which further aggravates handling and disposal problems. In the present era of economic liberalization, though industrial policies related to minerals have been revised from time to time, yet there is a scope to develop eco-friendly enterprises for the country. Hence there is a need for assessment of mineral content of available mineral wastes of the region and use them for the benefit of mankind.

Mots clés : Common salt Industrial mineral wastes Live stock Physical Sciences,Chemistry,Chemistry Organic Rock phosphate

Présentation et version intégrale (Shodhganga)

Page publiée le 26 février 2021