eChapters

With few species-specific differences in analyte ranges, clinical chemistry instruments originally developed for human and veterinary use are readily adapted for use in fish specimens. However, the development of hematological methods for fish continues to face challenges similar to those encountered during the early applications of complete blood count (CBC) techniques in birds and reptiles. Like their non-mammalian terrestrial counterparts, fish possess nucleated erythrocytes, and several leukocytes—such as thrombocytes, monocytes, lymphocytes, and basophils—exhibit similar morphology when stained with Romanowsky-type stains.
Blood collection and hematological testing are essential techniques in fish pathogen detection and overall health monitoring within India’s aquaculture systems. These approaches help assess physiological responses to infectious agents, environmental stress, and farming practices. Given the wide variety of cultured species—from carps in West Bengal and Andhra Pradesh to catfish in Tamil Nadu and ornamental fish in Kerala—blood-based diagnostics serve as a non-lethal, rapid, and informative method for health evaluation.
Blood is commonly drawn from the caudal vein or heart using sterile syringes, with or without anticoagulants such as EDTA, depending on the intended analysis. In field conditions, particularly in rural hatcheries and pond systems, affordable options like glass capillaries or insulin syringes are frequently employed. For small-sized species such as Danio or ornamental fish, heparinized capillary tubes are used to reduce clotting during blood collection. Fish are typically anaesthetized using clove oil or MS-222—both widely accessible in Indian laboratories—to minimize stress during handling.

With the invention of bitcoin in 2008, the world was exposed to a new technology paradigm called blockchain. Blockchain was conceptualized by an unknown person named as Satoshi Nakamoto in 2008. The identity of Satoshi Nakamoto is still not known. Nakamoto proposed the design of blockchain which uses digital signature and timestamps to enable secure and trusted online transaction without the need of any trusted regulatory or third party.

Introduction

At a present time, Organic farming has an important priority in different areas due to worldwide in look of the growing need for pure and nutritious agriculture food and keep up the feasible and environmental pollution on long time associated with indiscriminate use of chemical fertilizer. The use of synthetic inputs in crop cultivation is necessary to meet the growing need for agriculture food in world. The natural fertilizers are made containing living or veiled cells or their strains of N2 fixation, P2 O5 solubilization bacteria. The biofertilizers are used for seed cramming, soil or vermicomposting region with the objective of rising quantity of such microbes and further those microbial processes which augment the obtainability of nutrients that can be easily digest by plants. Biofertilizers are playing higher role in increase soil productivity by f ixing atmospheric nitrogen, both, in relationship with plant roots and without it, solubilise and insoluble soil phosphorus and produces many plant growth substances in the soil.

INTRODUCTION

Indigenous Technical Knowledge (ITK) represents the treasure trove of wisdom held by indigenous communities, often overlooked yet immensely valuable. Its impact spans various domains, notably aquaculture, where it has been pivotal. Local fisher communities, drawing from their indigenous knowledge, have been crucial in safeguarding wild fish genetics and improving aquaculture yields. Moreover, their Indigenous and local knowledge (ILK) contributes multifaceted insights to fisheries and aquatic ecosystems science, underscoring the need to preserve and honor this invaluable heritage. Additionally, traditional indigenous systems like aub-anbars have historically demonstrated their effectiveness in practical applications such as passive cooling and water storage, further highlighting the relevance and efficacy of ITK.

Importance of ITK in Aquaculture

Indigenous Technical Knowledge (ITK) is essential in aquaculture, providing valuable methods for pond preparation, water quality management, disease control, and post-harvest operations. These traditional practices, backed by scientific validation, can greatly improve fish production sustainability while being environmentally friendly. Moreover, modern biotechnological tools are increasingly used in aquaculture to enhance fish quality, disease resistance, growth rates, and genetic diversity. Additionally, the concept of intelligent fish farms, employing technologies like IoT and artificial intelligence, aims to optimize aquaculture processes for precise feeding, disease control, and harvesting, promoting green and sustainable practices. Combining ITK with modern biotechnology and intelligent technologies is crucial for advancing aquaculture practices towards efficiency, sustainability, and increased productivity.

This chapter introduces artificial intelligence, machine learning, computer vision and spectroscopy for rapid, automated and non-destructive egg-quality assessment. It covers machine-vision fundamentals, image acquisition and preprocessing, feature extraction, machine-learning models, deep learning, convolutional neural networks, hyperspectral methods and defect detection. Applications include crack detection, freshness prediction and internal-quality assessment. The chapter also examines model validation, transfer learning, sensor integration, commercial grading-line requirements and the practical limitations of deploying AI systems at industrial scale.

Introduction

Remarkable increase in fruit and vegetable crops cultivation under arid region of western India lead to drastic changes in the pest population dynamics. The productivity is concern, it is low because of harsh environment (high temperature, low precipitation, high PET, high wind velocity), poor soil fertility and salinity. Beside these, the biotic pressure like pests and diseases also play a critical role, which cause significant loss and adds to the cost of production.

A disease is characterized by the sum total of symptoms as expressed by the host plant and the signs of the pathogen involved. As stated earlier, it is the core part of disease diagnosis because in every diseased plant there are some symptoms/signs of the problem regardless of the ease in their visibility. Even in latent infections there are certain clues or at least presence of the pathogen inside the host serves as sign of the pathogen. However, the term, ‘disease’ itself refers to an uncomfortable situation of the concerned host. It reflects in the form of reduction in the vitality and performance of the host to varying degrees depending on the quality and quantity of the factors involved in production of the disease. Study of the characteristics of disease is, therefore, important for its quick and accurate identification.

Abstract

Classification of the hundreds of possible dryers is essential to the logical selection of appropriate dryer for a given application. Diverse criteria for classification as well as selection of dryers are presented and discussed briefly. The advantages and limitations of different dryer types must be taken into consideration. Initial capital cost is often the key deciding criterion in industrial dryer selection. This is not a good strategy as the user must pay for the operating costs over a long period of life of the dryer. In general several different dryer types are suitable for a given product. Careful selection is essential for cost-effective operation of the dryer.

Abstract

The disease is an output of the interaction among host, pathogen, and the environment over a period of time. Given that a susceptible host and an aggressive pathogen are available, weather determines the intensity of the disease over time. To capture the dynamics of the interactions among these biophysical variables, efforts have been made in the past to understand the variables per se and their interactions through modeling approaches.  The important weather parameters are temperature; rainfall/dew; leaf wetness period, wind, bright sunshine hours all of which are in turn influenced by soil properties. The important parameters of host that can influence disease development are susceptibility; growth stage and form; structure and density of the plant population and overall health. For pathogen, to cause disease, it should be present in the vicinity, pathogenic, adaptable with reproductive fitness and possess efficiency of survival and dispersal. 

Among various animal husbandry enterprises, poultry production has emerged as number one position and attained industrial status in many countries, including India.

This tremendous growth in poultry production is due to the following reasons:

There is no religious taboo towards poultry and poultry products.

Egg is the most nutritious, natural, unadulterated and easily digestible food with the highest biological value.

Eggs can be consumed by all age groups and economic classes, since it is the cheapest among all the nutritious natural foods on the earth.

Among various meats, poultry meat has the highest protein, lowest fat and cholesterol content.

Poultry is the best converter of feed into meat and eggs. A hen needs only 1.5 kg feed to produce 1 dozen eggs. Similarly a broiler needs less than 2 kg of feed to produce one kg broiler meat whereas other species need more than 3 kg of feed to produce 1kg of meat.

Poultry has the shortest generation interval among various livestocks.

Introduction

Fishing technology is the discipline dealing with the natural sciences and technology for optimizing fish catch and fishing operations, leading to a productive and sustainable capture fishery. The fishes are one of the main exploitable resources of the aquatic ecosystems that provide a cheap source of protein which helps solving the problem of nutritional security particularly in NE region of the country. The rapid development of fishing technology in India during the recent years has paved the way for increased production availability of new synthetic materials, evolution of new designs of fishing craft and gear and avoidance of ignorant harmful fishing techniques etc. It is essential that any developmental activity adopted, should also be base rooted in the objective of uplifting the economy of the fishing communities. This implies that the improvisation of the existing tools and techniques and introduction of new ones to enhance fishing efficiency need a careful study of the traditional technologies.

Further, selection of fishing methods and gear are influenced by various factors such as physiography of the water body, nature of fish stock, characteristics of the material from which gear are fabricated and standard of living. Therefore, variation in application of fishing devices can be observed in different type of water bodies, which have characteristic of their own due to unique nature of the water resources of the region. The success of these fishing techniques depends on various factors like selection of site, time, efficiency of materials used and availability of fish, etc. For successful fishing some attractant as a lure is popularly employed.

The North Eastern Region of the Country is very rich in the indigenous knowledge and techniques of fishing. The fishing gear and craft vary from one state to other states in terms of technical specification, materials and method of fishing. The type and size of water bodies also determine design fishing gear and craft to be used for fishing. The present day fishing methods and fishing devices which are in use in the region are the result of continuous efforts and knowledge inherited through generations of fishing community. Hence, fishing methods and fishing devices in the region was developed by the community according to their need, availability of the material, type of water bodies and target species. In this presentation, an assessment, compilation and documentation of these indigenous fishing technologies of the Tripura which is important for academicians, researchers and other stake holders, is made.

Introduction

Adversities of climatic factors in arid and semi-arid regions accelerate soil moisture deficit and chance of crop failure throughout the world (Lawless et al., 2008). Increasing human population is placing unprecedented demand for food and natural resources. It has been estimated that an increasing population and changing dietary intake will lead to about 80–120% increase in global food requirement by 2050 (FAO 2006; Foley et al., 2012). This large amount of food production cannot be achieved by the agricultural sector alone, rather through a combination of technological innovations and involvement of other natural ecosystems (Licker et al., 2010).Traditional tree-integrated farming systems are adopted since time immemorial for security of food, fodder and fuel wood in drought-prone arid region (Harsh et al.,1992; FAO 2013), but are unable to meet the requirement of the ever increasing population.

A systems approach to pest management based on an understanding of pest ecology is referred to as Biointensive Integrated Pest Management (BIPM). It is more dynamic and ecologically informed as compared to IPM that considers the farm as part of an agro ecosystem. Accurate diagnosis of the pest problem is the first step, which then relies on a range of preventive tactics and biological controls to keep pest populations within acceptable limits. It also considers ecological and economic factors into agricultural system design and decision - making and addresses public concern about environmental quality and food safety. As a last resort, the reduced – risk pesticides are used if other tactics have not been adequately effective.

The earlier concept of IPM has failed because of ease of applicability to easy availability of chemical pesticides. Hence, the present concept of BIPM, with more intensive use of biological and other biorational means has emerged. The flexibility and environmental compatibility of BIPM strategies make it useful in all types of cropping system. BIPM would likely decrease chemical use and costs entailing them. BIPM ultimately provides resistance / immunity to the entire system so that no foreign elements (insect pests or disease causing organisms) survive or gain upper hand. BIPM if followed for years shall enhance the natural control system, thus suppressing pest populations below those causing economic injury.

1.    The basic building block(s) of proteins is/are

(a) Amino acids

(b) Phenolics

(c) Carboxylic acids

(d) Fatty acids

2.    Alpha helix and ?- pleated sheet are characteristic of protein structure?

(a) Primary

(b) Secondary

(c) Tertiary

(d) Quaternary

ABSTRACT

Among the challenges of 21^st century, to make the food supply sustainable, the impact of climate change is largely unconceivable. The climate on earth has increased by 0.74° C over the past 100 years. Best estimate for low scenario of global warming is 1.8°C and for high scenario is 4°C. Last decade recorded the hottest in the century and 2009 has been rated hottest since 1900. Retreating glaciers have been confirmed in various parts of the world. Further, the current greatest challenge is to perceive the biological impact of such climate changes. Efforts have been initiated by Intergovernmental Panel on Climate Change (IPCC) to assess the impact of climate change on biological systems across the globe. Since 1950’s, the change in carbon dioxide content in the atmosphere is being monitored. Almost a decade later, computer models were employed to assess the possible impact of change in temperature and enhanced CO₂. By the 1980’s consensus was almost achieved on possible doubling of atmospheric CO₂ concentration due to emission from fossil fuels and rise in the global temperature. Since then quantitative estimates on the biological impacts of climate change have been taken up by scientific community world wide. Presently, ample of evidence on impact of climate change from marine to terrestrial environment, from species to communities, ecosystems and hierarchies have been gathered for both flora and fauna (Walther et al., 2002I). Parmesan and Yune (2003) reported that meta-analyses of 334 species and global analyses of 1,570 species revealed highly significant and regular patterns of change in relation to observed warming with more than 95 per cent confidence, as fingerprints of climate change.

Crusting soils

What is soil crusting?

Soil crusting refers to formation of a compact thin layer having high bulk density and high penetration resistance at the soil surface when dries after dispersion of fine particles and clogging of pores due to beating action of rain drop and slaking of irrigation water.

In arid and semiarid regions, crust formation occurs due to the destruction of soil aggregates. Crust formation occurs in all types of soils except sand. It is characterized by high bulk density, low non capillary pores, low hydraulic conductivity and aeration and high penetration resistance.

Introduction In today’s environment, the greatest challenge for the food industry is to develop health promoting foods; it is determined by the raw materials used and its impact on consumer health. Furthermore, people lifestyle has changed greatly, resulting in a change in food eating patterns. In today’s world, people are moving towards eating foods that are nutrient base and tasty (Bonciu, 2018). of all the nutrient based products available in market, expanded snacks have become a popular snack all over the world because of its crunchy texture and low density making it consumer’s acceptance (Grasso, 2020). The basic idea for developing any expanded snacks is utilizing a starch-based material for a better crispy and crunchy product, but to make it more nutritious incorporation of protein and fibre rich raw materials is recommended (Gu et al., 2017). Along with the raw materials, the other important parameters for developing any extruded product is the particle of the flour, its physicochemical and rheological properties of the extrudates are much concentrated (Bouasla & Wójtowicz, 2021) Thereby, extruded snack is considering as functional food with major health benefits.

Group contact method in communication involves engaging with multiple individuals simultaneously to convey information, facilitate discussions, or stimulate collective action. It encompasses various techniques such as group meetings, result demonstrations, method demonstrations, and study tours, among others. The primary aim of group contact methods is to leverage the power of collective engagement to disseminate knowledge, foster collaboration, and promote the adoption of desired behaviors or practices within communities. These methods enable extension workers to reach larger audiences efficiently, promote peer learning, and create supportive environments conducive to positive behavioral change.

Result Demonstration

Result Demonstration involves showcasing the superior outcomes of a new agricultural practice to motivate its adoption within a community. It serves as an effective means of technology transfer, inspiring farmers to experiment with innovations themselves.

Objectives include illustrating the practical advantages of newly recommended practices, motivating community groups to adopt them, bolstering confidence among farmers and extension agents, and fostering innovation leadership.

Techniques

Planning and Preparation • Analyze the local farming context. • Select cooperative farmers with adequate resources and community acceptance. • Choose representative demonstration sites. • Establish a clear schedule of operations.

INTRODUCTION

The aquaculture sector expands and environmental regulations become stricter, waste management has emerged as a significant responsibility for managers of aquaculture farms. Waste generated by aquaculture facilities usually comes in the form of either effluent or sludge. Effective management and disposal of wastewater in aquaculture are becoming progressively crucial due to the strict regulations concerning the discharge of waste into natural water systems. The worldwide expansion of aquaculture industries has led to a rise in adverse environmental effects due to the release of significant quantities of polluting effluents containing uneaten feed and fecal matter (Chávez Crooker and Obreque-Contreras, 2010) Efficient management of wastewater in aquaculture is crucial for fostering sustainable practices. A variety of innovative methods have been developed to treat aquaculture wastewater effectively. These encompass eco-sensitive systems such as aquaponics and integrated multi-trophic systems, along with biofilm technologies that exploit the mutual growth of algae and fungi to remove nutrients. Furthermore, the reuse of wastewater via oxidation ponds can both provide natural sustenance for fish and treat household sewage effectively. Technologies like constructed wetlands and recirculation systems have proven highly effective in removing nutrients and recycling water, thus aiding in sustainable aquaculture practices. Additionally, specialized continuous automatic treatment equipment has been devised specifically for aquaculture wastewater, ensuring efficient purification processes. Together, these diverse strategies collectively strive to address the challenges posed by nutrient pollution and resource depletion in managing aquaculture wastewater.