eChapters

Introduction

India is a vast country comprised of different agro-ecological regions with diverse climate, natural vegetation resources, topography, possesses almost all domesticated animal species, landraces and crops with different production systems. Domestic animals provide a considerable amount of   food requirements for mankind. India ranks first in milk production with 112.5 million tonnes milk produced in 2010-11. As India is a tropical country, in summer the temperature hikes about 40-48°C in various parts of the country. Such a temperature is certainly not within the comfort range of animals and thus the animals respond to the stress imposed by temperature on them in various ways to combat the stress and to maintain the homeostasis.

This chapter introduces genetic principles used to improve wool production and quality. It examines heritable traits including fibre diameter, clean fleece weight, staple length, staple strength, diameter variability and freedom from faults. Selection differential, response to selection, selection indices and crossbreeding strategies are discussed. The chapter also introduces objective measurement, genomic selection, reproductive technologies and electronic recording systems as modern tools for accelerating genetic improvement and producing more valuable and uniform fleeces.

Introduction

Animals have delicate balance of heat production and heat loss, which is maintained by thermoregulatory mechanisms in response to environmental temperature and humidity combinations. When the heat loss is overrun by heat gain, heat stress occurs. During heat stress, increase in the core body temperature due to failure of homeostatic mechanism reduces productivity of the animals below their original genetic potential in growth, milk production, milk constituents and reproduction (Ravagnolo and Misztal, 2002). Impending climate change scenario is a unanimously accepted reality. Increase in the anthropogenic greenhouse gases (CO₂, CH₄and NO₂) cause radiation leading to excess warming of the earth’s environmental system. According to IPCC, the predicted temperature rises for the end of 21^st century may be in the range of 1.8^oC to 4^oC (IPCC, 2007). The climate change has complex impact on the livestock production. Temperature or heat stress will be one of the major environmental factor to in?uence the health and productivity of livestock population. The least tropically adapted livestock may be severely affected by heat stress. The manage mental and ameliorative practices can deal with the heat stress in short term, however the long term focus of developing genetic heat stress tolerance in livestock population will be a significant and impactful strategy.

Shoot borer: Conogethes punctiferalis: Pyraustidae

The main damage done by the caterpillar of this pest is to bore holes in the pseudostem and to plug it with excreta, causing dead hearts. Larva is pale greenish with pinkish tinge and dark head and has fine hairs on the body with a pro thoracic shield. Adult is a medium sized moth, pale yellowish with small black spots on the fore and hind wings.

Management involves spraying dimethoate or malathion 1.5 ml/lit or phosphamidon 0.75 ml/lit of water. This is mainly intended to manage the adults flying in the crop canopy and the first instar caterpillars that are seen on the outside of the plants and before thsy enter the pseudostem. The spray has to be given at the very first spotting of dead haearts.

Thrips : Taeniothrips simplex : Thripidae

Yellow coloured nymphs and black adults damage leaves and spikes by rasping tissues and sucking the sap.  Affected leaves and spikes develop silver streaks, turn brown, get deformed and dry when attack is severe.  Corms in storage are also attacked. Infested corms are sticky, get shriveled and produce weak plants.

This chapter introduces the specialized terminology used throughout wool production, evaluation, processing and trade. It provides an alphabetically organized glossary covering technical terms associated with fibres, fleece preparation, grading, processing, textile manufacture and wool commerce. The glossary is designed to improve technical communication and examination preparation by giving readers precise definitions of commonly used terms. Cross-referencing with relevant chapters further helps readers connect terminology with the underlying scientific and technological concepts.

(Method of Froesch and Renold, 1956; Froesch et al., 1957)
Enzymatic with Glucose-oxidase / Peroxidase

Introduction

Glucose oxidase enzyme specific for the oxidation of glucose, was discovered in a fungus preparation by Müller in 1928. This enzyme is present in bacteria and in moulds such as (Pencillium notatum), which promotes the oxidation of glucose (b-ring form) to gluconic acid with the production of an equivalent amount of hydrogen peroxide. Normal values for whole blood glucose oxidase are 60 to 90 mg/100 ml. Results by the enzyme methods are lower than by the best “true  sugar” reduction methods largely because of their specificity, but inhibition of glucose oxidase by uric acid may be a contributory factor. In suspected cases of diabetes, values below 120 mg per 100 ml call for further investigation, for example, by glucose tolerance test. Due to the presence of glycolytic enzymes in red cells, blood must be collected into an antiglycolytic/anti-coagulant preservative, if there is to be a delay of more than 1 to 2 h. in processing or estimation. A fluoride/oxalate mixture, containing 2 mg of fluoride per ml of blood, is suitable and the glucose content will then remain unchanged for upto 3 days at 4ºC.

Goat anatomy

Understanding of the basic structure and functioning of goats is required to maintain the health and productivity of goats. Anatomy deals with the form and structure of the animal whereas physiology deals with the mechanism of body functions.

The skeleton of goat is made up of the vertebral column, ribs and skull, the limbs, and the joints. There are 7 neck (cervical) vertebrae, 13 chest (thoracic) vertebrae, 6 or 7 lumbar vertebrae, 4 pelvic (sacral) vertebrae and between 4 and 8 tail (coccygeal) vertebrae.The ribs are elongated, curved bones that form the ribcage, which is the skeleton of the thoracic cavity (chest). There are 13 pairs of ribs attached to each side of the thoracic vertebrae. Most of them are fixed i.e. they are joined to the sternum (breastbone) at the front of the chest but the last two pairs are not attached at the front and are called floating ribs.The skull includes all the bones of the head. It consists of a number of flat bones that form immovable joints, most of which disappear with age; and a lower jaw bone (mandible), which forms movable joints with the other parts of the skull.The limbs include forelegs (thoracic limbs) and hindlegs (pelvic limbs). The forelegs consist of shoulder,forearm and a lower limb made up of carpus,metacarpus and phalanges. The hind legs consist of pelvic girdle, thigh, and a lower limb made up of tarsus, metatarsus and phalanges.

The joints are where two or more bones of cartilages meet. There are two main kinds of joints.Fixed or immovable joints have no joint cavity and are united by fibrous tissue or cartilage. Many of these are temporary joints which become fixed as calcium accumulates in the flexible tissues and turns to bone (calcifies) with age. Examples are the joints in theskull, the joints of ribs to vertebrae, and the pelvic and mandibular symphyses (midline joints).Movable joints have a joint cavity surrounded by ajoint capsule. There are two opposing bone surfaces,which have smooth surfaces of very dense bone.

Movable joints have cartilages between the bones to reduce friction and absorb concussion. The inner lining of the joint capsule is the synovial layer, which produces synovial fluid (joint fluid). Examples include joints of the limbs, such as the shoulder and the hip, and the joint between the skull and the vertebral column.

Historical background of dairy goats

Small ruminants sector plays an important role in the national economy. This enterprise is associated with social and cultural fabric of millions of resource poor farmers. Small ruminant especially goats gain importance mainly on account of their short generation intervals, higher rates of prolificacy and the ease with which they can be marketed. They are very useful in semi-arid and arid zone where they can sustain themselves on sparse vegetation and esteemed climatic conditions.
 
There are four main breeds of dairy goats commonly found in Western Country, namely, Alpine, Nubians, Saanens and Toggenburgs. They are considered to be the best milking breeds of the world. All these four breeds have recently been introduced in India for improvement of milk quality of local goats. These breeds have been improved by selection, upgrading, and the wise use of pedigree records and registration over a period of more than half a century in Europe and North America.

Origin and Domestication of Goat

Goat is a cloven-hoofed, hollow-horned ruminant which is comparatively smaller in size and belongs to class Mammalia, order Artiodactyla, family Bovidae and genus either Capra (2N=60) or Hemitragus/tahrs (2N=48). The distinction between these two genera was previously based on horn structure but the distinction has been confirmed genetically. The domestic goat (Capra hircus/Capra aegagrus hircus) belongs to the genus Capra and has possibly developed from five wild ancestors. On the basis of available information, it is most likely that bezoar is the main ancestor of most domestic goats. However, there is slight likelihood that Markhor has been involved in the parentage of some of the Indian goat breeds.

Evolutionary biology indicates that domestication of goats started during Neolithic age and it was perhaps the first ruminant and first animal after dog to be domesticated by the man around 9000-7000 BC. Domestication was associated with three of the oldest civilizations namely- (i) the Nile in northeast Africa, (ii) the Tigris-Euphrates in west Asia, and (iii) the Indus in the Indian subcontinent. Archaeologists indicate that the goat was first domesticated in the “Fertile Crescent” (landmass which extends between the Black and Caspian seas along the coast of Palestine and forms arc like a quarter moon towards the Persian Gulf) of the eastern Mediterranean. Since their domestication, goats remained associated with variety of functions in various aspects of human life including food, employment, economics, folklore and religion.

Government role in marketing of milk

Ever since independence the dairy sector in India has been regulated. The government projects and programmes in place for enhancing dairy development include subsidies for developing infrastructure for milk processing and testing. The Clean Milk Production Programme is a centrally sponsored scheme that is being implemented by the State Department of Animal Husbandry, Dairying and Fisheries with several objectives: i) the creation and strengthening of necessary infrastructure for the production of quality milk and milk products at the farm level up to the points of consumption; ii) improvement of milking techniques; and iii) training to enhance awareness on the importance of hygienic milk production. Several other rural development initiatives support dairying, such as through the District Rural Development Agency and women’s self help groups. An area of government support that has not been capitalized on so far is the investment in promoting the nutritional aspects of milk, particularly pasteurized milk versus loose milk.

Government initiatives are pivotal in advancing natural feed management and sustainable livestock practices across India. As natural and organic farming gain recognition for their environmental benefits, numerous national and state programs are supporting farmers in decreasing their reliance on synthetic inputs, particularly commercial livestock feed. Flagship schemes such as Paramparagat Krishi Vikas Yojana (PKVY) and Bharatiya Prakritik Krishi Paddhati (BPKP) promote integrated, low-input farming systems by offering financial aid, farmer training, and implementation through cluster-based models. These schemes often incorporate livestock integration and development of natural feed resources.
Departments under the Ministry of Agriculture and Farmers Welfare, the Department of Animal Husbandry & Dairying (DAHD), and ICAR institutions actively encourage fodder production, feed preservation, and development of indigenous feed mixtures through research, on-ground trials, and skill-building programs. For instance, the National Livestock Mission (NLM) aids in fodder seed distribution, establishment of silage facilities, and training on scientifically sound yet natural feeding techniques. Institutions like Krishi Vigyan Kendras (KVKs) and State Agricultural Universities (SAUs) contribute through extension services, field demonstrations, and technical advice on formulating natural feed, utilizing medicinal plants, and conserving feed on-farm.
In recent developments, the government has promoted Farmer Producer Organizations (FPOs) and Self-Help Groups (SHGs) to facilitate collective feed processing, shared resource use, and marketing of value-added products like organic milk and free-range poultry. Similarly, the Rashtriya Gokul Mission supports the improvement and conservation of native cattle breeds better suited for natural feeding systems.

This chapter introduces grading and standardization as mechanisms for converting biological variation in eggs into defined commercial specifications. It examines grade factors, quality classes, egg sizing and weight classification, and Indian standards including AGMARK and BIS. International approaches such as Codex, USDA and EU frameworks are compared. The chapter also describes automated grading equipment, candling, packing systems and packaging requirements. Particular attention is given to Indian egg-marketing channels, price behaviour, cold-chain requirements and consumer perception.

Grain engorgement syndrome, also known as grain overload, lactic acidosis, ruminal acidosis, or carbohydrate overload, is a metabolic condition primarily affecting ruminant animals such as cattle, buffalo, sheep, and goats. It occurs when animals consume excessive amounts of readily fermentable carbohydrates, commonly found in grains such as wheat, barley, and corn, or feed concentrates. The sudden overload leads to rapid fermentation in the rumen, causing a cascade of physiological disturbances that can be lifethreatening if not promptly managed.
This condition is of significant importance in livestock farming, particularly where intensive feeding systems, grain supplementation, or unintentional access to stored grains occurs. Proper understanding of the pathophysiology, clinical signs, diagnosis, and nutritional management is crucial for preventing mortality and economic losses in affected herds.
Pathophysiology
Ruminants rely on a microbial ecosystem in their rumen to digest fibre and carbohydrates. The rumen contains a diverse population of bacteria, protozoa, and fungi that ferment ingested feed, producing volatile fatty acids (VFAs) such as acetate, propionate, and butyrate. These VFAs provide energy to the animal. When ruminants ingest a sudden excess of high-starch grains or other fermentable carbohydrates, the balance of the rumen ecosystem is disrupted:
Rapid fermentation: The high starch content is rapidly fermented by grampositive bacteria such as Streptococcus bovis. This leads to a sudden and excessive production of lactic acid.

Grapevine stem girdler:  Sthenias grisator : Cerambycidae

This is a pest that can also survive on mango, rose, cocoa, coffee, almond, and mulberry. The ovipositing adult causes wilting of branches and then the entire vine. Adults are medium-sized, grey coloured beetles with a white spot at the center of each elytron. They are active at night.

Eggs are deposited in clusters of 2-4, underneath loose bark of girdled branches. Eggs are oval and enveloped in a white parchment like covering. Adults emerge out and start ovipositing individual eggs at a point in the vine in a circular fashion so that the vine dries up above this point. Egg period takes about 8 days. The grub has dark brown head and mouth has a pair of prominent mandibles, each with two teeth. The grub continues its life as a semi saprophyte and pupates in the same tunnel. A single generation can occupy one year.

Calorimetry

The process of measuring  the amount of heat generated by the combustion of a substance is known as calorimetry. The first successful calorimeter using oxygen under pressure for the combustion of substance in a closed vessel was devised by Berthelot in 1881. Subsequent development by Mahler in 1992, Atwater in 1899, and Parr in 1912, served to improve and to reduce the cost of the original Berthelot apparatus by variations in mechanical details.

a) Large Unpenetrated Market
According to the sample registration system (SRS) baseline survey, 2014 released by the registrar general of India, 71 percent of Indians over the age of 15 are non-vegetarian.
b) Young Growing Population and Nutritional Security
India as a one of the major young population country in the world (27.4%) according to FAO, OECD 2018 data there is a huge need to address the nutritional security of the people with higher protein diet. Thus, we have high requirement of protein to feed country’s population in up- coming years.
c) Per Capita Consumption & Income
The annual per capita consumption of broiler meat and eggs for India is far below then recommended consumption of 180 eggs and 10.8 kg poultry meat per person per annum by Indian Council of Medical Research. The increase in per capita disposable income has led to an overall increase in food consumption, particularly protein in the form of meat and eggs.
(McKisney and company Report, 2013). The study conducted by Law et al. (2019) suggested that in India the consumer preference has changed and the cereals are now substitute of animal products rather than a complementary product

Spiralling whitefly : Aleurodicus dispersus : Aleyrodidae

A. dispersus originated from the tropical countries in Central and South America. More recently, it has been reported from Asia and Africa. In India, Andhra Pradesh, Karnataka, Kerala, Maharashtra and Tamil Nadu faces its problem. A. dispersus is a highly polyphagous species. Its wide host range includes many vegetable, ornamental and fruit crops, as well as numerous trees and shrubs, including Capsicum, Citrus, Cocos nucifera (coconut), Euphorbia pulcherrima (poinsettia), Glycine max (soybean), Hibiscus, Lycopersicon esculentum (tomato), Mangifera indica (mango), Musa (banana), Persea americana (avocado), Prunus spp., Psidium guajava (guava)and  Solanum melongena (brinjal) etc.

Introduction

The present world wide situation of food items calls for a broad range of poultry alternatives to meet increasing demand of quality protein. Besides, complication involved in managing chicken, emergence of new diseases, increase in feed cost and increasing demand of poultry meat bound us to search for alternative species of poultry. In this circumstance rearing of Guinea fowl framed for centuries to meet poultry production requirements of diversified agricultural milieu. The traditionally reared Guinea fowl could become a significant source of food and also a source for substantial supplement income.

History
 
Guinea fowl a bird of West African origin came to India during mediaeval age. Now guinea fowl are being raised in the districts of eastern Uttar Pradesh and in some parts of Tamilnadu. The birds are very popular with marginal farmers and poor classes and are being largely kept as foragers and insectivorous under semi-range and range conditions.

Introduction

Guinea fowl has been domesticated in the recent past as a meat producing birds. Guinea fowl species are found across sub Saharan Africa. Guinea fowls found fairly in large numbers in wild type. Guinea fowl is from the family Numididae in the order Galliformes. They are endemic to Africa and rank among the oldest of the gallinaceous birds. Guinea fowls are hardy, sociable in habit, move in flock and thrive well in tropical as well as in temperate climates. They survive well even under the subsistence agriculture through scavenging. Guinea fowls are resistant to some of the diseases which may fatal to chicken. Guinea fowl meat is tender but slightly darker than that of chicken. Its special gamey flavor makes it a special table delicacy. Guinea fowl meat is drier and leaner than chicken meat and has a gamy flavor. They have marginally more protein than chicken or turkey roughly half the fat of chicken and slightly fewer calories per gram. Their eggs are substantially richer than those of chicken.

Guinea fowl are the insect and seed eating, ground nesting birds with featherless head. Under natural condition, they are monogamous in nature. Wild guinea fowl are strong flyer. Their breast muscle are dark, enabling them to sustain themselves in flight for considerable distances if hard situation. Guinea fowl hens are not known for good mother, but in the wild the guinea fowl cock may help the young keets during the day by keeping them worm and finding feed. Sometime more than one cock will help to raise the young.