eChapters

Introduction

Plant products have been used for centuries by humans as food and to treat ailments. Natural medicinal products originating from herbs and spices have also been used as feed additives for farm animals in ancient cultures for the same length of time. Keeping farm animals healthy is necessary to obtain healthy animal products. The main scope in animal husbandry is to ensure good performance of farm animals and get quality animal products, which can be achieved only with the effort to keep the animals healthy. Only quality feed together with proper hygiene, potable water and management can ensure the production of nutritious animal products with desired organoleptic properties (Saxena, 2008). A ban of antibiotics as feed additives in animal nutrition is realized since 1986 in Sweden and later on to various countries. A general ban is foreseen in some years from now, because of the increased occurrence of pathogens resistant against therapeutical antibiotics used in animals and humans. With the restricted use or ban of dietary antimicrobial agents we must explore new ways to improve and protect the health status of farm animals, to guarantee animal performance and to increase nutrient availability (Wenk, 2003). In this aspect, herbs and spices are not just appetite and digestion stimulants, but can, with impact on other physiological functions, help to ensure good health and welfare of the animals, what can positively affect their performance.

ABSTRACT

The Village Knowledge Centre programme was started in January 1998 in the Union Territory of Pondicherry (now Puducherry) in the east coast of South India with the support of IDRC and CIDA. In order to ensure access to all, the VKCs are located in public buildings (Panchayats, SHG’s building, Community Hall, School, Farmers and Fishermen Associations, Women Self-Help Groups, Community Based Organization, etc.,). The information content is developed in close interaction with the local people in a bottom-up manner.

1. Introduction

Recirculatory Aquaculture Systems (RAS) have garnered attention as a sustainable solution to address the environmental and economic challenges associated with traditional aquaculture practices. Recent studies, such as those conducted by Martins et al. (2023) and Chen et al. (2024), have underscored the efficiency and resource conservation benefits of RAS. This section introduces the overarching opportunities and challenges in RAS, laying the foundation for a detailed examination of the latest developments in the field, opportunity presented by RAS lie in its capacity for water conservation. Martins et al. (2023) highlight the continuous filtration and recirculation of water within the system, significantly reducing overall water usage. This not only addresses environmental concerns but also aligns with the broader goals of sustainable aquaculture and provides a unique advantage in biosecurity, as emphasized by Li et al. (2022). The ability to meticulously control water quality parameters minimizes the risk of diseases and contributes to a healthier and more resilient aquaculture system. This enhanced biosecurity is pivotal in mitigating the impact of disease outbreaks on aquaculture operations. Precision control over environmental factors within the RAS facilitates optimal growth conditions, resulting in higher production yields. Anderson and Smith (2023) delved into the advantages of this controlled environment, positioning the RAS as a key driver for meeting the growing global demand for sustainable seafood production.

Farmer Producer Organizations represent a transformative institutional innovation in agricultural development that addresses the fundamental challenges of small-scale farming through collective action and cooperative enterprise development. These organizations emerge from the recognition that individual small farmers face insurmountable obstacles in accessing markets, obtaining fair prices, securing quality inputs, and achieving economies of scale necessary for sustainable agricultural livelihoods in increasingly competitive and globalized food systems. The concept of FPOs builds on the rich tradition of agricultural cooperation while adapting to contemporary market realities and policy frameworks that require formal institutional structures for accessing services, credit, and government support programs. FPOs represent a hybrid institutional form that combines the democratic governance and member ownership characteristics of traditional cooperatives with the business orientation and professional management capabilities of modern enterprises, creating organizations that can operate effectively in comp

Introduction

Mycotoxins are substances produced by fungal infections which in some cases do protect plants or plant seeds against parasites (Schardl et al., 1996). However, upon ingestion, inhalation or dermal contact, these mold producing substances are poisonous to vertebrates. Even with more than 100,000 species of fungi known, only some of them are active mycotoxin producers. The fungi species which are known to produce the most hazardous mycotoxins in agriculture and in animal production are Fusarium, Aspergillus and Pencillium spp. Mycotoxins vary greatly regarding their toxicological effects as they do not belong to a single class of chemical compounds (Jewers, 1987). The environmental conditions in which they are preferably produced also differ. Fusarium toxins, such as trichothecenes, Zearalenone and fumonisins are commonly produced on the field, whereas aflatoxins and ochratoxins are produced by Aspergillus and Penicillium spp. mainly after harvest and during poor storage conditions.

Introduction

Growing waste production globally is a serious threat to a sustainable ecosystem. A World Bank analysis estimates that in 2016 alone, cities globally produced over 2.01 billion tonnes of solid waste or 0.74 kg per person each day. The amount of waste generated annually is predicted to rise by 78% from 2019 levels to 3.40 billion tonnes in 2050 due to fast urbanisation and growing populations (Chandra Paul et al., 2019). The wastes include radioactive substances, agricultural wastes, food wastes, industrial wastes, municipal wastes, garbage, paper waste etc. The extensive use of land for commercial, industrial, and residential reasons has resulted in a decline in the amount of open ground available for waste disposal. Proper waste collection, transportation, recycling, and disposal must be done to decrease the amount of waste on earth. To manage waste in developing nations and urban areas sustainably, integrated waste management systems that are effective, economical, efficient, and socially inclusive are crucial.

There is wastage and loss of food during its journey from production to consumption. Approximately one-third of the massive 1.3 billion tonnes of food produced annually goes to waste due to various factors such as poor
handling after harvesting, unfavorable storage conditions, insect infestations, and diseases. To combat these losses, synthetic chemicals have historically been used to control pathogens and pests, but concerns over their potential health risks have led to restrictions on their usage. In response, researchers are now focusing on developing safer and more effective physical treatments for disinfecting and protecting horticultural produce. This chapter specifically explores the advantages of using heat treatment as one such method, discussing how it helps maintain the quality of fruits and vegetables while simultaneously reducing postharvest losses.
Some of the heat processing methods are discussed below:
Fruit juices, RTS and nectars are preserved by pasteurization or by using chemical preservatives. Squashes, crushes, syrups and cordials are preserved by adding chemical preservative like potassium metabisulphite or sodium benzoate.

Conflict represents an inevitable and potentially constructive dimension of community mobilization that emerges when individuals and groups with different interests, values, perspectives, or needs interact in pursuit of shared or competing goals. Rather than viewing conflict as purely destructive or problematic, effective community mobilization requires sophisticated understanding of conflict dynamics and skilled application of management strategies that can transform disagreements into opportunities for learning, innovation, and strengthened relationships that enhance collective capacity and democratic participation. The complexity of contemporary community challenges requires bringing together diverse stakeholders with varying backgrounds, experiences, priorities, and approaches to problem-solving, creating natural conditions for disagreement and tension that must be navigated skillfully to maintain group cohesion while harnessing the creative potential that emerges from diverse perspectives and approaches. Understa

Providing balanced nutrition to different groups of dairy cows with varying production levels is a significant challenge for commercial dairy farmers. The production performance of dairy cows is directly influenced by the type of feed provided. Ensuring balanced nutrition is crucial to optimize productivity in milk production and reproduction while minimizing feed costs. Dairy cow rations should consist of high-quality forages, a balanced mix of grains and protein sources, essential minerals, vitamins, and other feed supplements. Proper feeding practices are essential to prevent under or overfeeding and ensure that cows receive the right amount and combination of feed ingredients.
Formulating well-balanced rations that meet the nutrient requirements of cows results in optimal feed digestion and utilization. Transitioning from traditional feeding systems to a total mixed ration (TMR) feeding system is recommended for efficient and profitable feeding of dairy cows. TMR feeding systems have been widely adopted in developed countries due to their effectiveness. Each mouthful of TMR provides a complete and balanced ration for the cows, reducing feed selection by the animals and promoting synchronization of carbohydrate and protein availability in the rumen, leading to lower rumen acidity.
TMR feeding systems offer benefits such as labor savings, the ability to feed various types of feeds, and ensuring a nutritionally balanced ration at all times. While TMR may pose challenges in meeting individual nutrient requirements for each cow, larger dairy farms with multiple groups of cows can effectively manage this issue. By providing a nutritionally balanced ration consistently, TMR feeding systems help cows consume energy close to their requirements while maintaining the physical characteristics of roughage necessary for proper rumen function, ultimately leading to optimal production and economic efficiency.

21.1 Introduction

The industrial revolution, which began in the early 18th century in some countries of Europe, set in motion new forces in the environment and greatly changed the pattern of social life. Rapid industrialization and urbanization subsequently brought many changes in the environment and ecosystem. India also witnessed a phenomenon of industrial growth in the post independent era. Progress in the industrial development in Tamil Nadu during recent past is appreciable. New industries developed, existing industries expanded and new technologies are introduced.

In India, the past decades have witnessed population explosion and increase in per capita consumption of food and consumer goods. These have led to the proportionate increase in the domestic and industrial wastes. The waste is continuously increasing at an alarming rate. By the end of this century, India’s population is likely to increase from the present level of 700 million to about billion. Similarly the per capita consumption of food has been estimated to increase by 40% resulting in double production and disposal of industrial and domestic wastes (Manivanan, 2004).

Apart from the quantitative increase there will be also a qualitative change in the waste product, which are likely to contain greater amount of oil, toxic chemicals, detergents and dyes. A large number of these compounds are non-degradable and are cumulative, thus rendering the toxic products. Certain group of plants like algae and bacteria are selective in their functions and can executive certain toxic chemicals and heavy metals. The microorganism communities are helping in effective recycling of industrial effluents.

The government is taking serious efforts to keep the production of toxic substances under strict control at production centers. It carefully watches the efforts that are made to discharge the toxic waste from industries within the permissible limits and usages of toxic chemicals within the prescribed limits. The majority of rural population being uneducated is prone to excessive use of water which has become pollutant. The pollutant ultimately is drained into the natural aquatic environment, the rivers and the oceans. A part of these wastes are recycled and they again enter the food chain and cause detrimental effects to human health. Thus in nature, long and short term chain reactions are continuously in progress and these are required to be understood. Even when the best available yardsticks are applied to conserve the environment. It is a stupendous task to enforce these regulations.

In addition to production of more waste the coming years will see a qualitative change in the composition of waste. These wastes are likely to contain greater amount of toxic chemicals, detergents, non-degradable products based on hydrocarbons, and its derivatives. Large amount of wastes which are non degradable and cumulative in nature produce a series of new and complex problems. Therefore, alternative methods should develop for treatment and disposal of cumulative and nondegradable chemicals and pollutants.

Uses of Microorganisms in Biotechnology

Somatostatin was the first human peptide hormone produced by recombinant bacteria

Many important medicines are produced by recombinant microorganisms

Bacterial species can be used as biological control agents

The release of recombinant microorganisms into the environment is sometimes controversial

Microorganisms can reduce environmental pollutants

Abstract

Agricultural development in India provides support to a large section of farmers who operate on small holdings and have very limited risk bearing capacity. Farmers are often exposed to natural vagaries, which adversely affect their agricultural production and farm income. Moreover, there is huge financial exclusion in rural sector of the nation. If there is a crop failure, farmers are crushed under the burden of debt. Farmers seek to avoid risk in terms of various managerial and institutional mechanisms. But it is widely believed that ‘Crop Insurance’ is the only institutional mechanism available against production risk in farming. Unfortunately, penetration of crop insurance schemes in India has been low in terms of the area of land insured and the number of farmers covered. There are the problems of low risk awareness and lack of insurance culture among the farmers. In this backdrop, the paper documents the findings of a survey of 140 farmers, which was taken up in some selected villages of North 24 Parganas district of West Bengal. The study shows that likelihood of this awareness increases with increase in landholding size, education level, borrowing history and social participation of the farmers, whereas it decreases with the non-farm income and livestock of the farmers. The author proposes measures to promote and spread awareness of crop insurance among the farmers as a risk mitigation tool in farming, which will increase farm production and stabilize the fluctuation in farm income. The study provides valuable policy measures to the government in better designing of their crop insurance products and will also help the private agro-insurance business, which is recently taking off in the country.

INTRODUCTION

Plant diseases caused by microbial plant pathogens and sub microscopic entities including virus and viroids induce both quantitative and qualitative losses of high magnitude in yields. The extent of loss may range from slight to 100% depending on the susceptibility/resistant level of the cultivars and prevailing favourable environmental conditions (Narayanasamy, 2011). With the introduction of high yielding cultivars, adoption of modern production techniques such as high input agronomic practices, changes in cultural practices, free movement of planting materials and changes in weather conditions over the years have led to increase in pest and disease problems, several of which have become major constraints in their successful cultivation (Gupta and Thind, 2006). The challenge is how to feed the growing population by producing more on a stagnant or shrinking landscape; with lesser input cost and with lesser hazards to the eco-system. The detection and management of diseases prior to economic loss will help to minimize the yield loss of the crops. Physical and chemical techniques have been applied either alone or in combination with certain cultural practices to enhance the effectiveness of reducing pathogen inoculums and consequent reduction in disease incidence.

The term essential element was proposed by Arnon and Stout (1939).They concluded three criteria must be met for an element to be considered essential. These criteria are:

1.A plant must be unable to complete its life cycle in the absence of the mineral element.

2.The function of the element must not be replaceable by another mineral element.

3.The element must be directly involved in plant metabolism.

The number of elements considered essential for the growth of higher plants now varies from 16 to 20 or more, depending upon the definition of essentiality. Other scientists such as Nicholas (1961) believed that an element should be considered essential if its addition enhances plant growth even though it merely substitutes for one of the 16 elements that Arnon declares to be essential. For example, sodium can substitute in plant nutrition for some potassium and vanadium for some molybdenum, Nicholas would consider both sodium and vanadium as essential, but Arnon would not. On the basis of the criteria used, Arnon specifies 16 elements and Nicholas 20 elements as being essential for the growth of higher plants. Three other debated nutrients are nickel (urea transformations), cobalt (N₂ fixation) and silicon. These criteria are important guidelines for plant nutrition but exclude beneficial mineral elements. Beneficial elements are those that can compensate for toxic effects of other elements or may replace mineral nutrients in some other less specific function such as the maintenance of osmotic pressure. The omission of beneficial nutrients in commercial production could mean that plants are not being grown to their optimum genetic potential but are merely produced at a subsistence level.

Pituitary
Herlant (1960) Pituitary Stain I
Tissues fix in 10% neutral buffered formalin or Zenker formol and process for routine paraffin sections
Protocol
1) Deparaffinise the paraffin sections with two changes (10 minutes each) of xylene.
2) Descending grades of ethanol from absolute to 50% solution (2 minutes each).
3) Hydrate the sections with water 5 minutes (remove HgCl2 if present).
4) Stain in erythrosine for 5 minutes.
5) Rinse briefly in distilled water.
6) Stain in Mallory II for 5-10 minutes.
7) Rinse briefly in distilled water.
8) Stain in acid Alizarine blue for 5-10 minutes.
9) Rinse briefly in distilled water.
10) Treat with phosphormolybdic acid for 5-10 minutes.
11) Rinse briefly in distilled water.
12) Differentiate in 70% ethanol

Pomegranate is one of the popular fruit crops of tropical and sub tropical in India and enjoys high reputation for its dietetic and medicinal properties. The fruit is native of Iran and is extensively cultivated in Mediterranean countries like Spain, Morocco, Egypt, Iran, Afghanistan. It is also grown to a lesser extent in Myanmar, China, Japan, India and U.S.A.

The area under pomegranate cultivation has increased several folds in the recent past after the introduction of soft seeded varieties. Out of 30,000 hectares under this crop in India, Maharashtra state alone grows over eighty per cent of area with an average production of 8000 kg ha^-1 (Mote et al.,1992). The export of pomegranate fruits was 1790.3 tonnes in 1991-92 valued at rupees 215.3 lakhs which was more than two fold over the previous year’s export earnings (Chadha, 1994). The utility of the crop is gaining importance and at present new orchards of pomegranate are being planted on large acreage. Because of its versatile adaptability, hard nature, low maintenance cost, steady and high yields, fine table and therapeutic values, better keeping quality and very good export potential, there is greater scope for extending its area and increasing the production especially in the hot and semi arid regions of India.

In pomegranate, market preference is for the attractiveness of the fruit which are exhibited through better size, colour with bold and deep coloured arils besides possessing high juice-content. However consumers prefers the softness of the arils with low acidity. While, there are number of cultivated types available with these desirable characters, there are hardly cultivar having a combination of all or atleast a majority of them. Pomegranate improvement work, therefore has to be oriented towards the production of soft seeded type with other desirable characters (Phadnis, 1974).

The term pesticide includes fungicides, bactericides, nematicides, rodenticides, soil fumigants and herbicides. They cover a wide range of formulations: chlorinated hydrocarbons, organophosphates, metallic salts, acetic acid derivatives, thiocarbamates etc. They all have deleterious effects on humans, domestic animals, wildlife and plants.

Indicators are the natural or synthetic chemical compounds that are used to detect the equivalence point in a volumetric analysis where unknown compound in a solution form is quantitatively estimated with the help of a known standard solution. The equivalence point, also known as the stoichiometric end point, is the point or stage of a titration reaction where the equivalent amount of the reacting substances are mixed together, and this point is identified by monitoring the rate of change in pH, conductivity, flow of current, adsorption, fluorescence, changing of solution colour, occurrence or disappearance of turbidity, flocculation or deflocculation, etc.

Centrifugation is a technique that promotes accelerated settling of particles in a solid-liquid mixture by the application of centrifugal force. The device that accelerates the separation with the help of centrifugal force is known as ‘Centrifuge’. The centrifuge consists of a fixed base or frame and a rotating part in which the mixture is placed and is then spun at high speed.