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Calving Interval/ Dairy Calving/Udder, Mr P Reynolds - Coggle Diagram
Calving Interval/ Dairy Calving/Udder
Calving
Scour
Vaccination
Hygeine
Colostrum
Within 2 Hours
Energy Source
Heat Source
Antibodies against disease
Calving Interval
365 Days Target
Impact of Poor Calving Interval
Longer intervals = Longer dry = Less Time producing milk = Less Income
Longer intervals = Longer Dry = Longer feeding period = Higher Cost
Longer Intervals = More AI/Bull = Higher Cost
Each day slippage in calving date reduces net profit by €3.81 per cow per day.
Total cost amounts to €57.50 per heat missed
Compact Calving
Syncing Cow Cucle
CIDR
Breed
Bull Gestation
Nutriton
Factors that affect it
Fertility – Low fertility = Longer CI
BCS – High/Low BCS = Difficulty getting in calf
Breed/Genetics – Holstein breed puts too much energy in milk not in fertility
Diet – poor diet = low BCS = Low Cycling Rate
Health – Cow health will reduce cow cycling
"the period from one calving to the next calving"
measuring the fertility performance
How to Improve Calving Interval
Genetics– Choose high Fertility bulls/Cows with better reproductive performance = Shorter CI
Short Gestation Bulls – Calves carried less than 288 days = Shorter CI
BCS/Diet – Manage diet to increase energy -> Easier for cows to go in calf = Shorter CI
Health - Vaccinate/Dose to prevent disease = Better Health = Higher Fertility = Shorter CI
Heat Detection – Use Heat aids or bull – Higher chance of cow pregnant = shorter CI
Management Pre – Calving
Steaming Up (6 Weeks Prior to Calving)
Fed High Energy Diet (75% DMD Silage + Concentrates)
Supplement Minerals/Vitamins
Low BCS at Calving Causes:
Poor Lactation Yield
Poor Fertility (Poor Conception)
High BCS at Calving Causes
Milk Fever
Calving Difficulties
Ketosis (High energy use and low energy feed intake)
Udder
Specialised cells of the alveoli.
Alveoli duct
Gland cistern.
Teat cistern.
Streak canal.
The udder is made up of four independent quarters.
separated by the medial suspensory ligament.
Milk let down
Teat are stimulated by milking machine or calf – sends message to brain.
Pituitary gland produces hormone oxytocin that travels to udders causing the alveoli to contract forcing milk out.
Adrenaline produced if cow disturbed -stopping “let down.”
Mr P Reynolds