VET space / 수의대생 블로그

B12 Estimation of breeding value in beef cattle Places of investigation: In field- farm, race, place, open range, exhibition. The breeding value estimation done at the farm evaluates the performances at the real place of production. In station- centralized test station, individual feeding, control of live weight, evaluation of meatiness through ultrasound (rib eye area, live weight, cannon girth..

B3 Breeding methods in cattle production: purebred breeding, crossbreeding Breeding Systems Natural: Harem (group of 1-2 males and number of females with their offspring), stud (such as a stud farm) or hand (Hand breeding – where the time & mating individuals are selected by the breeder) Beef production Sex ratio = 40-50 (60-79) ​AI- artificial insemination: Predominantly used in dairy industry ..

A17 Comparison of milk composition in dairy animals ​ Sheep has less water than goat, cattle and horse (lowest  highest) Sheep has more fat than goat, cattle and horse ( highest  lowest) Sheep has more protein than goat, cattle, horse (-.-) Sheep has more lactose than cattle & goat, but less than horse Cow milk: Rich in protein and source of calcium. sheep goat cattle Water 79.9 86.0 87.7 Fat ..

B2 Main reproduction features of cattle, and most important bovine genetic diseases ​ Puberty: ~8 (12-16) months , Full maturity: First breeding usually occurs >15 (13-14 months) or when animal has reached ¾ adult body mass. First calving: around 2-3 years. (Great breed variance) ​ Main Reproduction features Uniparous: single birth, rarely twins Low reproduction potential: long generation interv..

B1. Domestication of cattle, micro-evolutionary consequences, related species, inter-species hybrids Taxonomy of cattle & its relatives: Kingdom: animals (Animalia) Phylum: vertebrates (chordata) Class: mammals (mammalia) sub class: placentalia Order: hoofed animals (ungulates) Sub-order: even toed (Artiodactyla) Section: ruminants Family: cattle like (bovidae) Number of chromosomes vary btw 50-..