TERMINOLOGY Attack rate: A variant of an incident rate, applied to a narrowly defined population observed for a limited period of time, such as during an epidemic. Carrier: A person or animal without apparent disease who harbors a specific infectious agent and is capable of transmitting the agent to others. Crude mortality rate: The mortality rate from all causes of death for a population. Cumulative frequency cu [...]
Biochemistry is the study of the chemical processes in living organisms. It deals with the structures and functions of cellular components such as proteins, carbohydrates, lipids, nucleic acids and other bio-molecules SOME CONCEPT ON BIOCHEMISTRY The most abundant molecule in the cell is Water (H2O). Roughly 70% of a cell consists of water. Inorganic molecules in the cell are: Sodium chloride (NaCl), potassium chloride ( [...]
FORMATION OF THREE GERM LAYERS All the embryonic germ layers originate from the epiblast, which divides into the endoderm, mesoderm, and ectoderm by a process called gastrulation. Christian Heinrich Pander (1794-1865) first identified this three layered organization in the blastoderm of embryonic chicks. In the process of gastrulation, a primitive streak first appears on the dorsal surface of the epiblast. As cells mov [...]
TERMINOLOGY Acetabulum is present in pelvic girdle Aponeurosis is fusion of muscle with muscle (May with bone sometimes) Appendicular means bone of limbs Axial skeleton means Bones of skull, vertiveral column, and ribs and sternum Bulbus glandis is present in the penis of dog Caudal indicates the structure being described is closer to the tail Clavicle is absent in cattl [...]
FACTORS AFFECTING THE CHEMICAL COMPOSITION OF FEED STUFFS Following are the factors: Soil types: It is the major factor affecting the chemical composition of feed stuffs. Soil with rich nutrients, plants has also high and vice-versa. Irrigation: It determines the nutrients solubility but heavy irrigation wastes away nutrients. Fertilizer: Type and amount of fertilizer determines the nutrients contents of the fee [...]
