eChapters

• General considerations

 • Collection of synovial fluid

• Examination of synoival fluid

 • Physical examination

 • Chemical examination

 • Cytological examination

 • Microbiological examination

 • Examination for immune complexes

 • Miscellaneous examination

 • Inflammatory conditions of joints

 • Non-infectious arthritis

 • Infectious arthritis

 • Immune complex mediated arthritis

• General considerations

 • Indications

 • Collection of cerebrospinal fluid

 • Sub-occipital puncture

 • Lumbar puncture

 • Examination

 • Physical examination

 • Chemical examination

 • Cytological examination

 • Microbiological examination

The following tests are used for microscopic evaluation of semen: 
    
12.1    Sperm motility
12.2     Per cent Live sperm
12.3     Sperm concentration

12.1 Sperm Motility

The following two methods of estimation of sperm motility are followed in routine practice:
 
12.1.1    Mass activity
12.1.2    Progressive sperm motility
12.1.1 Mass Activity

Mass activity can be defined as ‘en-mass activity of the spermatozoa in the semen, immediately after collection’. Mass activity is generally assessed by vigour of swirls and waves motion in undiluted semen under 20 X magnification and expressed on 0 to 5 scale.

Key Points

• Neurologic dysfunction, which can show up as a wide range of perplexing symptoms and indicators, can accompany gastrointestinal disorders that cause malabsorption and the ensuing nutritional deficits.

• Digestive illnesses are among the most common problems in animals living in tropical countries. They often manifest as intestinal blockage, malabsorption, malnourishment, bleeding in the gastrointestinal tract, diarrhea, and stomach pain or distention.

Introduction

Animal digestive problems can be brought on by a range of conditions, including infections, parasites, and other illnesses. In older dogs and cats, gastrointestinal (GI) disorders of the alimentary tract and hepatobiliary system are prevalent. The majority of the time, GI symptoms in affected animals are caused by inflammatory illnesses; however, degenerative lesions and motility issues can also occur. Acute and chronic conditions are two general classifications for gastrointestinal diseases. Dietary errors, or the worsening of long-term gastrointestinal disorders, are the most frequent causes of acute gastrointestinal disorders. Alongside chronic gastrointestinal disease, colitis or inflammatory bowel disease are frequently diagnosed.

• General considerations

 • Steps in validation

 • Step1- Feasibility studies

 • Step 2- Assay development and standardization

 • Step 3- Determining assay performance characteristics

 • Step 4- Monitoring validity of assay performance

 • Step 5- Maintenance and enhancement of validation criteria

 • Measurement of uncertainity of a diagnostic test

Artificial insemination (AI) is the technique of placing sperm into a female’s uterus (intrauterine), or cervix (intracervical) using artificial means rather than by natural copulation. Modern techniques for artificial insemination were first developed for the dairy cattle industry to allow many cows to be impregnated with the sperm of a bull with traits for improved milk production. It is the first generation reproductive biotechnology which has revolutionized the animal productivity. It has now been established as cheapest and fasted mode of genetic improvement of livestock. AI can be done using fresh semen, semen preserved at room temperature, refrigerated (4ºC) and cryopreserved (-196ºC) semen. The use of AI with frozen semen has become very popular and is being successfully used throughout the country.

• General considerations

 • Purpose and goals of laboratory

 • Standards, guides and references

 • Accreditation for competence

 • Identification of scope

 • Test methods

 • Benefits of ISO17025 accreditation

 • Processing of application

After the patient has been radiographed, the exposed X-ray film is processed to produce the consistent quality radiographs. Film processing can be manually, or use an automatic film processor.  Manual film processing is a multi-stage process involving five basic steps in processing X-ray film: 
    i)    Developing 
    ii)    Rinsing 
    iii)    Fixing
    iv)    Washing
    v)    Drying. 

The present study on trichology of domestic and wild animals was conducted in the Postgraduate laboratory of the Department of Veterinary Anatomy and Histol ogy, Nagpur Veterinary College, Nagpur. The study was undertaken with an aim of species differentiation from the guard hair of domestic as well as wild animals. The hair samples were collected from a total of eight domestic animal species and six wild animal species. Six animals from each species were studied and only three animals studied from the Sambar species as only three animals from this species was reported for post-mortem to the Nagpur Veterinary College, Nagpur within the period of research.

India has rich diversity of goat genetic resources and as per 20^th livestock census (2019), there are 148.88 million goats in India. They are mostly found in arid and semi-arid regions of the country and one of the mainstay of dryland agriculture system. Out of 148.88 million, around half of them (75 to 60 million goats) are found in Rajasthan (20.84 m), Uttar Pradesh (14.48 m), Madhya Pradesh (11.06 m), Maharashtra (10.6 m), Tamil Nadu (9.89 m) Karnataka (6.17 m) and Gujarat (4.66 m). Out of total goat population, only 35 % of the goats are of either pure breed or upgraded nature resembling the some of the local breeds. There is huge scope to improve the productivity through use of assisted reproductive tools like artificial insemination and estrus synchronization in field condition to upgrade the non-descript population in relatively shorter period of time as compared to natural services.

1. Introduction
Good Laboratory Practice (GLP) is a systematic quality system essential for
ensuring the reliability, consistency, and integrity of laboratory data, particularly when the findings are used for regulatory decision-making. GLP ensures that laboratory studies are conducted in a scientific manner, maintaining high standards of ethical practice, precision, and reproducibility, with a primary focus on ensuring public and environmental safety. Introduced by the U.S. Food and Drug Administration (FDA) in 1978, GLP gained global recognition through the Organisation for Economic Cooperation and Development (OECD), which established guidelines for its implementation. GLP principles are now widely adopted in regulatory testing for pharmaceuticals, chemicals, food safety, and environmental testing. The OECD’s guidance on GLP has been instrumental in developing standards across the globe, ensuring that test results are scientifically valid and can be accepted internationally. In Asia, particularly in India and other developing countries, GLP compliance has gained increasing importance as pharmaceutical, environmental, and chemical industries expand. Regulatory bodies in these regions have gradually aligned their standards with international norms to ensure their competitiveness in global markets. This chapter discusses the key SOPs necessary for GLP compliance and provides a regional perspective, focusing on India and other Asian nations, where GLP frameworks are evolving to meet international standards.
2. Objective of GLP
The overarching objective of GLP is to ensure that laboratory data is accurate, reliable, and reproducible across different studies. The scientific and regulatory communities rely on GLP to ensure that findings from preclinical studies and safety evaluations can be trusted and utilized for regulatory approval.
The key objectives of GLP include
• Accuracy and Integrity of Data: GLP ensures that every aspect of data collection, analysis, and reporting is conducted with integrity and accuracy, preventing errors or falsification that could affect regulatory decisions.

Introduction
According to the U.S. Food and Drug Administration (FDA), Good Laboratory Practices (GLP) is a quality system that ensures the nonclinical safety studies are appropriately designed, conducted, and documented to generate reliable data. The laboratory techniques are defined as the processes and practices that are recommended for equipment use in the laboratory, while laboratory methods are based on established scientific principles involving biology, chemistry, and physics, and encompass all aspects of the clinical laboratory from testing the amount of cholesterol in blood to analysing DNA to growing microscopic organisms that may be causing an infection. One of the most significant parts of laboratory techniques and laboratory methods is the proper validation of the equipments (old or new equipments) as well as all the testing procedures/ methods (established or newly developed methods). Analytical method validation is a critical process to ensure the quality and safety of products. The objective of the validation of an analytical method is to demonstrate that it is suitable for its intended purpose; the results are authentic and universally acceptable. An analytical method is suitably well considered when the results generated through different method are consistent, reproducible, and thus, reliable.
The validation is required when
• A new method has been developed
• Revision of established method
• Use of established methods in different laboratories and different analysts, etc.
• Comparison of methods required
• When quality control indicates method changes

Modern Semen Evaluation Methods

1. Fluorescent Microscopic Evaluation
2. In-vitro Fertility Test
3. Enzyme Estimation

1. Fluorescent Microscopic Evaluation

1.1. Acrosomal Integrity (Giemsa method and FITC-PSA assay)

The acrosomal integrity of the spermatozoa was detected using Fluorescence isothiocyanate – Pisum sativum agglutinin (FITC-PSA) staining procedure adopting method of Mendoza et al. (1992). Pisum sativum agglutinin (PSA) when conjugated to Lectin FITC marks the intact acrosome with bright green fluorescence. PSA is an agglutinin from edible pea that binds to glycoconjugates of acrosomal matrix or outer acrosomal membrane. It has affinity for terminal α –D-glucosyl and α-D-mannosyl residues of glycoproteins and it binds specifically to sugar α-mannoside found in acrosomal content.

Goats remain an important and instant source of income as well as livelihood for the majority (70-90 %) of small and marginal farmers in India. Goats are the animals with multiple utility like milk, meat, hide, fibre and manure. They are more tolerant to harsh environment (better resistance to heat stress and drought, better utilization and digestibility of pastures) and give more production per unit investment. Goats are spontaneously ovulating, poly-estrous animals and show seasonal pattern in reproductive activity related to the annual variations of photoperiod. Onset and length of their breeding period throughout the year is dependent on different environmental and physiological factors viz. latitude and climate, feed and fodder availability, breed and breeding system. This in turn affects round the year availability of meat and milk to full fill the market demands. When kids are born out of season, adequate supply of pastures along with good management practices must be ensured in order to minimize kid’s mortality and promote their optimum growth.

Introduction 
Good Laboratory Practices (GLP) serve as the foundation of any efficient and high-functioning laboratory, ensuring data reliability, patient safety and adherence to regulatory standards. In an environment where accuracy, consistency and data integrity are critical, comprehensive GLP training becomes the driving force behind operational excellence. A well-structured training program strengthens the capabilities of laboratory professionals, enabling them to navigate complex regulatory landscapes while upholding the highest standards of quality and safety. In today’s rapidly evolving scientific and industrial sectors, maintaining stringent laboratory standards is imperative rather than optional. GLP provides a structured approach that ensures every test, analysis and experimental procedure is carried out with precision, ethical rigor and strict adherence to safety measures. However, beyond simply following GLP principles, continuous assessment of laboratory personnel’s competency is essential to sustaining long-term proficiency and compliance. Competency assessment in GLP plays a crucial role in verifying whether laboratory staff possess the requisite expertise to perform tests accurately and generate reliable, scientifically valid results. As a framework designed to uphold the credibility of non-clinical laboratory studies, GLP is instrumental in reinforcing research integrity and ensuring compliance with regulatory authorities. Laboratories that rigorously follow GLP guidelines contribute to reproducible and verifiable scientific findings, which are vital for regulatory approvals and critical decision-making in pharmaceuticals, healthcare and research sectors. Competency assessments function as both a quality assurance mechanism and a professional development tool, guaranteeing that laboratory personnel not only comprehend standard protocols but can also execute them effectively in real-world scenarios. With the continuous evolution of laboratory sciences, training and assessment methodologies must also advance to meet new challenges. This chapter explores the transformation of GLP training and competency evaluation, emphasizing their significance, diverse methodologies and essential components. Additionally, it highlights best practices for implementation and introduces innovative strategies designed to complement established global standards, such as those outlined by the Clinical and Laboratory Standards Institute (CLSI) and the Indian Council of Medical Research (ICMR). By embracing these advancements, laboratories can not only achieve regulatory compliance but also cultivate a culture of excellence, ensuring that their workforce remains agile, skilled and prepared to meet the demands of modern scientific landscapes.

Bone marrow is a soft, gelatinous tissue that fills the medullary cavities of bones. It plays a crucial role in the production of blood cells. It makes up about 3% of body mass in rats, 2% in dogs, and 5% in humans. Bone marrow develops in the embryo during the second trimester of pregnancy. This tissue is vital because it contains stem cells that can differentiate into various cell types. Bone marrow is of red and yellow types. In young mammals, the marrow is red and active (with minimal fat). With aging, accumulation of adipose tissue, and long bones transition turn bone marrow to yellow, fatty, inactive. In adult mammals, active hematopoiesis continues in flat bones, such as the sternum, ribs, pelvis, vertebrae, and skull, as well as the epiphyses of long bones. Erythropoiesis in these regions contributes significantly to red blood cell production, with the axial skeleton accounting for about 35% and the appendicular skeleton for 65%. In birds, hematopoiesis is mainly restricted to bone marrow, while in reptiles, it occurs in the bone marrow, spleen, liver, and thymus. Indications

1. Introduction
 Laboratories form the backbone of research, clinical diagnostics and industrial quality control. Good Laboratory Practices (GLP) serve as the foundation for ensuring the quality, integrity, and reliability of scientific research, particularly in different pharmaceuticals drug testing, environmental studies and chemical testing. Good Laboratory Practices (GLP) in animal husbandry and dairy research play a crucial role in ensuring the accuracy and reproducibility of scientific studies related to livestock management, dairy production animal health and promoting animal welfare. Originally developed to prevent fraud and ensure regulatory compliance, GLP has evolved in response to advancements in technology, increased regulatory demands and the growing human and animals need for sustainability in laboratory operations. Laboratory settings are inherently fluid, with regulatory frameworks and technological progress constantly reshaping the environment. Studies indicate that even minor lapses in quality control can trigger significant inconsistencies in test results, outcomes that can have serious repercussions in both clinical and research domains. Therefore, cultivating a philosophy of ongoing improvement is crucial for addressing these evolving challenges, meeting the rising demand for safe, superior dairy products and embracing innovation. This article, synthesize the latest research findings and guidelines, delve into trusted best practices and outline practical strategies for embedding continuous improvement into everyday laboratory operations. A study published in the Journal of Laboratory Quality demonstrated that the adoption of structured quality indicators significantly minimized error rates and bolstered patient safety in clinical laboratories. Their research also provided a comparative analysis of different continuous improvement strategies, including the Plan-Do-Check-Act (PDCA) cycle and Lean Six Sigma, highlighting their respective benefits in lab environments. Based on these insights, the authors advocate for a comprehensive quality management system that seamlessly integrates automation, comprehensive staff training and routine audits to enhance process efficiency. Ultimately, the findings underscore that continuous improvement is an enduring journey, one that evolves along with advances in science, technology and regulatory standards.

Reduced capacity or incapacity to fertilize by males/Impotentia generandi: Fertility is the normal functioning of the testes, accessory sex glands and ducts to deliver sperm of normal quantity and quality. Infertility or sterility in males is usually characterized by normal sexual desire and the ability to copulate and ejaculate but a complete or abnormally high percentage of failure of fertilization or conception. It may be seen when semen is normal on examination and on the other hand, the semen is abnormal in sperm morphology, concentration, motility and other qualities.

Advantages and limitations of artificial insemination

Artificial insemination is the first great biotechnology applied to improve reproduction and genetics of domestic animals. Artificial insemination includes the collection of semen from the male, semen assessment for quantity and quality, dilution with extender, preservation and then insemination. Artificial insemination (A.I.) is a breeding technique where semen with living sperm is deposited into the reproductive tract of a female who is in estrus by use of instruments. Artificial insemination is the most important single technique widely used worldwide to upgrade the genetic makeup of the farm animals. Artificial insemination can be performed in most of the domestic animals like cow, buffalo, mare, sow, bitch, queen cat, lambs, does etc. Due to invention of frozen semen technology, the extended semen doses can be preserved for years together and permit wide spread use of superior germplasm. Artificial insemination is a powerful tool mostly employed for livestock improvement. The advantages and limitations of frozen semen technology are enlisted below:

The idea behind semen dilution is to extend its volume without affecting its fertility so that many females can be bred from an ejaculate. The basic components of semen extender are Tris buffer, fructose, glycerol, egg yolk and antibiotics.