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B3 Most important bovine genetic diseases Genetic mutations as breed traits: Muscle hypertrophy Genetic dysplasia/ achondroplasia ​Immunodeficiency BLAD (bovine lymphocyte adhesion deficiency) ulcers , loss of teeth , chronic pneumonia and diarrhoea —> early death Chediak-Higashi syndrome- autosomal recessive Blood circulation, hemostasis Haemophilia B (factor IX deficiency) Hyperbilirubinaemia ..

B10 Milk production, milking and udder hygiene ​ Fat + protein yield: 600kg/lactation 10,000 kg/lifetime Milking systems: During milking the milk is collected & the amount is registered For hygiene- teats are cleaned and disinfected. Milking systems can be: tied system, un-tied system, robot, carousel, or standing in a line to enter one at a time to the milking facility Milk Meter: Measure the a..

B9 Dairy cattle breeds (classification, characteristics, types), breeds for cheese industry milk production ​ Montbeliarde Red & white pied color Produces milk mainly for cheese industry  high content of kappa casein BB variants Annual yield = 7500 L / year 3.9% butterfat 3.35% protein Bulls 900-1200kg Cows 145cm @ withers, 600-700kg​ Normande Well suited for cheese production - camembert chees..

B8 Dairy cattle breeds (classification, characteristics, types), breeds for production of consumption milk UK single purpose dairy breeds (Channel Island breeds): Produce protein & fat rich milk: Jersey cattle Small breed Cows 360-540kg Bulls 540-820kg High butterfat content (6%) High protein content (4%) Annual yield = 5400kg/ year ​Guernsey cattle Buff coat color with distinct white spots (yel..

B7 Estimation of breeding value in dairy cattle ​ Estimated breeding value: The estimation is done during the animal’s production cycle It is defined as the difference of the individual genetic merit (value) from the mean genetic merit of a reference population The individual breeding value changes according to the value (- the genetic merit) of the reference population or mating partners. BVi –..

B6 Importance of udder evaluation in dairy cattle, udder health, milk hygiene ​ Udder evaluation- importance For breeding Important to check up udders to avoid the “bad breeders habit”: Formalism (Ayrshire cow) Functionalism- bad function ​for Estimation of conformation conformation is estimated based on a Linear conformation scoring system of functional traits. (9 point scale) Somatic cell coun..

B5 Dairy cattle technologies (housing, feeding and milking systems) Dairy cattle (cows)- cattle cows bred to produce large quantities of milk, from which dairy products are made ​Technology of dairy cattle keeping: Life of a cattle: a dairy cattle life starts with birth: the cow & calf are most commonly together during the first 3-4 days (colostral period) milk feeding period: the calf Is separa..

B4. Breeding goals and characteristics (traits) of dairy cattle, milk properties ​ • The estimation of the breeding value is one of the stations of the animal production’s cycle. • On the course of the breeding value estimation we grade our candidate individuals according to their estimated value. Then, we designate the real future parents from this ordinal list of candidate individuals (in most..