TSPSC Veterinary Surgeon key terms

The branch of veterinary anatomy that studies the form, structure, development and functions of bones, including their classification, articulations and species-specific features in domestic animals.

The study of the viscera, covering the digestive, respiratory, urogenital and endocrine organs, their topography, blood supply and species differences relevant to clinical examination and surgery.

The anatomical study of skeletal, cardiac and smooth muscle, including muscle groups, origins, insertions, actions, innervation and their applied importance in locomotion and surgical approaches.

The study of the heart, blood vessels and lymphatic channels, focusing on their arrangement, branching patterns and functional significance in each domestic species.

The microscopic study of tissues and organs, covering epithelial, connective, muscular and nervous tissue, staining methods and organ architecture used to interpret biopsy and necropsy samples.

The coordinated physiological processes that keep the internal environment of the body stable, including pH, temperature, osmolality and electrolyte concentrations, despite changes in the external environment.

The anaerobic microbial breakdown of dietary carbohydrates and proteins in the rumen, producing volatile fatty acids, ammonia, methane and microbial protein that the host absorbs and uses.

Short-chain fatty acids, chiefly acetic, propionic and butyric acid, produced by rumen microbes and absorbed through the rumen wall as the main energy source for ruminants.

The regulation of hydrogen ion concentration in body fluids through buffers, respiration and renal excretion, assessed clinically by blood pH, bicarbonate, pCO2 and anion gap.

The control of water and electrolyte balance by the kidneys, thirst, antidiuretic hormone and aldosterone, maintaining plasma osmolality and extracellular fluid volume within narrow limits.

A laboratory report showing the susceptibility or resistance of a bacterial isolate to a panel of antimicrobials, used to select targeted therapy and monitor resistance trends.

The lowest concentration of an antimicrobial agent that prevents visible growth of a standardized bacterial inoculum under defined laboratory conditions, guiding dose selection and susceptibility categorization.

The ability of microorganisms to survive exposure to antimicrobial concentrations that would normally inhibit or kill them, arising from genetic mutation, horizontal gene transfer or selective pressure from drug use.

Protection acquired by transfer of preformed antibodies, as through colostrum in neonates or antiserum administration, providing immediate but short-lived defence without immunological memory.

Protection produced when an animal's own immune system responds to an antigen from infection or vaccination, generating antibodies and memory cells with delayed onset but long duration.

A substance added to a vaccine to enhance and direct the immune response to the antigen, often by forming a depot, stimulating innate immunity or promoting a particular antibody class.

The microscopic examination of stained tissue sections to identify cellular and architectural changes caused by disease, forming the basis for definitive diagnosis of many neoplastic and inflammatory conditions.

A systematic post-mortem examination of an animal carcass, including external inspection, organ dissection, sampling and record keeping, to establish cause of death and herd-level disease patterns.

A structural change so characteristic of a particular disease that its presence alone permits a definitive diagnosis without further confirmatory testing.

The mandatory interval between the last administration of a veterinary drug to a food-producing animal and the marketing of milk, eggs or meat from that animal, ensuring residues stay below maximum limits.

The maximum concentration of a veterinary drug residue, including its metabolites, legally permitted in or on a food commodity, set from toxicological and consumption data to protect public health.

A substance that counteracts a poison by neutralizing it, blocking its receptor, accelerating its elimination or correcting the physiological effects it produces.

The proportion of an administered dose of a drug that reaches systemic circulation unchanged, determined by route, formulation and hepatic or ruminal first-pass metabolism.

Bedside and laboratory assessment of rumen liquor for colour, odour, pH, protozoal motility, methylene blue reduction time and chloride, used to diagnose rumen acidosis and indigestion.

The percentage of blood volume occupied by red blood cells after centrifugation, used with plasma protein to assess hydration, anaemia and the severity of blood loss.

A complete blood count reporting red cell indices, total and differential leukocyte counts and platelet numbers, interpreted together to classify anaemia, inflammation and stress responses.

The set of practices that prevent microbial contamination of wounds, surgical sites and sterile equipment, including hand scrubbing, sterile drapes, instrument sterilization and careful field discipline.

The combination of drugs and techniques, such as premedication, induction and maintenance agents with analgesia, to produce unconsciousness and pain relief with minimal physiological disturbance.

The precise placement of an animal and cassette relative to the X-ray beam to obtain diagnostic images, minimizing rotation and magnification while protecting personnel and patient.

The recurring sequence of pro-oestrus, oestrus, metoestrus and dioestrus, or anoestrus in seasonal breeders, driven by hypothalamic, pituitary and ovarian hormones and ending in ovulation or luteal regression.

Failure of a female to conceive after three or more services with a fertile male or insemination, despite regular oestrous cycles and no detectable gross genital abnormality.

The first secretion after parturition, rich in immunoglobulins, fat, vitamins and minerals, which must be fed promptly to neonates to confer passive immunity and prevent septicaemia.

A feeding system in which forages, concentrates, minerals and additives are blended into one uniform mixture, preventing selective feeding and stabilizing rumen fermentation.

An infectious disease naturally transmissible between vertebrate animals and humans, controlled through surveillance, vaccination, food hygiene, vector control and occupational precautions.

The interaction of agent, host and environment that determines the occurrence and spread of disease, forming the conceptual basis for investigation and control programmes.

The indirect protection of susceptible individuals that arises when a sufficiently high proportion of a population is immune, reducing effective transmission of an infectious agent.

The process of transferring research-based knowledge and skills to farmers through demonstrations, field days, mass media and group methods, aimed at voluntary adoption of improved practices.

The difference between gross income from a livestock enterprise and its variable costs, used to compare enterprises and plan resource allocation without allocating fixed costs.