Thursday 24 January 2013

Definitions and Concepts in Biology, zoology and Animal husbandery



1.      Abomasum: The fourth or true stomach of a ruminant where enzymatic digestion occurs.
2.      Allele: The partner of a gene pair is called an allele.
3.      Ampula of Vater: It is broad or swollen end of hepatopancreatic duct which is formed by fusion of pancreatic duct and combined bile duct. The pancreatic duct brings the pancreatic juice from pancreas while common bile duct brings bile from hepatic and cystic duct.
4.      Anthelmintic: A drug that kills parasites.
5.      Antibody: A protein produced by the body's immune system that recognizes and helps fight infections and other foreign substances in the body. 
6.      Artifical Insemmination: The injection of semen into the female’s reproductive tract through the use of a French gun in order for animal to become pregnant.
7.      Biology: The study of life is called Biology.
8.      Biotechnology: The use of biological systems to get product to achieve an end desired by the humans is called biotechnology.
9.      Blackface Breeds: Meat breeds of sheep.
10.  Blood Pressure: Pressure per unit area exerted on the walls of arteries or veins when blood flows through them. The blood pressure of a normal person is 120/80 mmHg where 120 mmHg is the systolic pressure while 80 mmHg is the diastolic pressure.
11.  Bolus: A rounded mass of medicine or food which moves from pharynx into esophagus of animals such as cattle, goats, sheep and human.
12.  Buck (Billy): A male goat used for breeding.
13.  Buckling: A young male.
14.  Butting: A method of fighting by which one animal strikes the head and horns of its opponent.
15.  Callus: Callus is a group of undifferentiated cells formed at the site of wound or cut either in plants or animals.
16.  Cardiac Cycle: The alternating contraction & relaxation of heart is called cardiac cycle.
17.   Circulatory System: A type of system in which the circulatory fluids flows in body and exchange of materials take place. The circulatory fluid can be haemolymph, blood or any other thing.
18.  Cistern: The final temporary storage area of milk in the udder.
19.  Cleats (Clays, Claws, Clees): The two halves of the sheep’s foot.
20.  Colostrums: The first milk the doe or ewe produces after given birth to their offspring. The milk is thick and golden yellow in color and contains rich antibodies. If the newborn does not consume the milk within the first 24 hours of life there is very little chance the animal will survive.
21.  Complementary DNA (c-DNA):  The DNA produced by reverse transcriptase from an m-RNA is called c-DNA.
22.   Cryptorchid: A testicle that fails to descend into the scrotum sac.
23.  Cumulus cells: The cells which remain attached to the egg (ovum) after ovulation are called cumulus
24.   Docking: The removal of the tail.
25.  Doe: A female goat.
26.  Doeling: A young female.
27.  Dystocia: Difficulty in delivering the fetus.
28.  Electrocardiogram: It is a device which displays the rhythm of heart beat in the form of graph which is shown on screen called electrocardiogram.
29.  Ewe Lamb: An immature male ewe is called a “ewe lamb.”
30.  Ewe: The female sheep.
31.  Fecal Flotation: A microscopic procedure used to identify various parasite eggs in a fecal sample.
32.  Fleece: The wool from one sheep.
33.  Freshen: To give birth (kid) and come into milk.
34.  Gene: The unit of inheritance of a particular character consisting of a group of nucleotides is called a gene.
35.  Genetics: The study of pattern of transference of characters from generation to generation is called genetics.
36.  Genotype: The genetic makeup of an organism is called its genotype. e.g ' a tall plant may be phenotypically tall but genotypically dwarf'.
37.  Guttation: The loss of water from the surface of plants in the form of droplets or liquid state.
38.  Heredity: The inheritance of characters is called heredity.
39.  Heterozygous: An individual having different alleles at a particular locus for a particular trait is called heterozygous.
40.  Homologous chromosome: The chromosomes which are similar in shape and size and usually align together at the metaphase spindle are called homologous chromosome.
41.  Homozygous: An individual having both the alleles same or similar for a particular character at a locus is called homozygous.
42.  Hydathodes: Guttation is the loss of water from parts of plants in drops. These water droplets secrete from water of lands called Hydathodes.
43.  Immunity: The capacity of a body to protect against pathogenic or any other harmful substances when they enter in the body or cause an abrupt effect on body. It is controlled by Immune System of the body.
44.  Johne’s disease (Mycobacterium paratuberculosis): A bacteria disease causing severe weight loss and some diarrhea.
45.  Kid: A goat less than one year old.
46.  Lamb: A young sheep up to 5 months of age.
47.  Libido: Usually refers to the mate’s sex drive.
48.  Loin: The muscle that lies between the last rib and the hip bones of the back.
49.  Marbeling: The fat within the muscle.
50.  Metabolism: All the biochemical reactions taking place in a living organism within or outside its cells are collectively termed as metabolism.eg; breakdown of glucose in cytosol (catbolism) and formation of glucose in chloroplasts of plants or algae (anabolism).
51.  Metagenesis: There are some organisms which complete their life cycle in more than on larval forms. This phenomenon is termed as metagenesis. eg; in case of Fasciola hepatica.
52.  Metamorphosis: The developmental changes by which a larva is transformed into an adult are collectively termed as metamophosis. For example a tadpole becomes a frog; glochidium of Fresh water mussel etc.
53.  Metathesis: The ability of an organism to change its colour due to presence of chromatophores is called metathesis.  
54.  Metritis: Inflammation of the uterus.
55.  Mimicry rings: In tropical countries, field research has shown that there are large numbers of species involved in mimicry. 54 species of Heliconius are recognised, with over 700 named colour forms. There are four (or perhaps five) assemblages of butterflies, which include the heliconiines and their mimics. These mimicry rings are called tiger, red, blue and orange for short. Members of each ring tend to roost together at night, fly to similar habitats and at the same time of year. Mimicry rings include both Müllerian and Batesian mimicry.
56.  Mutton: The meat from sheep older than 12 months of age.
57.  Near Threatened: The jaguar, whose numbers in Central and South America have been classified as Near Threatened, acts as a keystone predator by its widely varied diet, helping to balance the mammalian jungle ecosystem with its consumption of 87 different species of prey.
58.  Open: A female that is not pregnant.
59.  Oviparity: The complete development of embryo within the shelled egg which is laid by mother (development of embryo outside the body of mother) as in case of most of the fishes, amphibians, reptiles and birds is called oviparity
60.  Ovoviviparity: The complete development of embryo within the shelled egg, within the body of mother as in case of Duck-billed Platypus Ornithorhynchus aculeata is called as ovoviviparity. (see also viviparity. )
61.  Paedomorphosis:  In some amphibians eg; Axololte, the larva develops its gonads (sex organs) without metmorphosing the other morphological features, this is called as paedomorphosis.
62.  Paternal: Pertaining to the father or sire.
63.  Pelt: The skin of a goat or sheep including the wool from the latter.
64.  Phenotype: The external morphology of an organism is called its phenotype.
65.  Polymerase Chain Reaction (PCR): PCR is used to produce a large no. of copies of gene of interest within a test tube in short time.
66.  Polymerase Chain Reaction (PCR): PCR is used to produce a large no. of copies of gene of interest within a test tube in short time.
67.  Postpartum: An event occurring after birth.
68.  Probe: Probe is a sequence of DNA nucleotides which is used to identify the required gene present in genomic library.
69.  Prolific: Tendency to produce many offspring.
70.  Puberty: When an animal becomes sexually mature.
71.  Quarantine: To confine and keep an animal away from the rest of the herd or flock to prevent the spread of diseases.
72.  Ram: A male sheep. Sometimes a ram may be called a buck.
73.   Septicaemia: A serious infection in which the bloodstream is invaded by a large numbers of causal bacteria which multiply there.
74.  Settled: A female that is pregnant.
75.  Shearing: Removing the wool from a sheep.
76.  Spleenomegaly: Enlargement of spleen is called spleenomegaly.
77.  Teaser: A male that has been vasectomized and is used to indicate which females are in estrus.  
78.  Threatened Species: The species which is at the verge of exyinction is called threatened species. For example Cheeta, Ghazella, Polar bear, Neel gaey, Musk dear, and panda.
79.  Transgenic Organism: The organism processing a foreign gene in their cells is called transgenic organism.
80.  Viviparity: The complete development of embryo within the uterus of mother as in case of mtatherian, like kangaroo, and eutherian mammals, like human is called as viviparity.
81.  Wean: To separate nursing offspring from their mothers so that they no longer receive milk.
82.  Wether: A male sheep or goat that as been castrated.
83.  Yearling: A male or female sheep or goat that are between 1or 2 years old.
84.  Wet Ewe: A ewe that is nursing a lamb.
85.  Zoonosis: Any animal disease that can be spread to humans.

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