WorksheetsAg Science 25 Nutrition and Management of dairy herd 1
Total questions: 33
Worksheet time: 25mins
Which of the following are ways in which a farmer should prepare for calving?
Have an experienced person or vet on hand.
Have all the proper equipment on hand i.e. calving jack, iodine..
Isolate the cow when she shows signs of calving
Assist in the calving if needed
What are the signs a cow is about to calve?
She will move away from the rest of the herd
Her pin bones will drop
There will be mucus and waterbag may will show.
Her vulva will be springing
Her udder will fill up and milk may come out of the teats
What should the farmer do after the calf is born?
Clear the mucus form the nose and mouth.
Ensure the cow licks the calf or rub it with straw.
Dip the navel in iodine
May sure the calf gets 3L of colostrum in the 2 hours
Tag the animal
What causes milk fever?
Lack of iron
Lack of calcium
Lack of magnesium
Lack of nitrogen
What are the ways in which milk fever can be prevented?
Do not let animals graze newly growing grass in spring.
Give the animal Calcium in their diet.
Make sure that the animal get loads for fresh water.
Give the cow an antibiotic injection.
What is ketosis?
A disease where the cow is lacking calcium
A disease caused by a bacterial infection
A disease caused by the lack of energy.
A disease caused by a fungus.
What are the main differences between colostrum and milk?
Colostrum has higher amounts of fat.
Milk has a lower amount of protein.
Colostrum has a lower amount of lactose
Colostrum has a lower amount of water.
What are the advantages of colostrum?
Colostrum has antibodies that will protect the calf from diseases.
Colostrum has a warming effect
Colostrum clears the black lining for the intestines.
Colostrum has a high energy content.
When does colostrum stop being absorbed by the calves intestine?
After 2 hours
After 12 hours
After 24 hours
After 4-5 days
What is the scratch factor?
Where an animal itches itself against gates and causes them to fall over.
Where animals are feed colostrum to build up their rumen.
Where an animal itches itself against fences and causes them to fall over.
Where animals are feed concentrates/hay/straw to build up their rumen.
After how many days should calves get access to concentrates/hay
1 day
5 days
10 days
60 days
What is the target weight a calf must reach before being weaned off milk?
40 kg
65 kg
220 kg
300 kg
Which of the following grazing systems should be used when grazing newly weaned calves.
Paddock
Leader-follower
Strip
Block
What are the advantages of using the leader follower grazing system with young calves?
They get young leafy grass
They have less risk of getting diseases
They do not have the stress of grazing ground bare
What (a) % of replacements should a dairy farm aim for every year?
What are the reason why a dairy cow would need to be replaced?
Disease
Calving/fertility problems
Grading up
Declining milk quality and production
Age
What should a farmer look for in a replacement heifer?
Comes from a high producing mother and high EBI
Is the correct breed and docile
Has good feet, teeth, udders and teats
Has a BCS of 3.25 and is at least 300kg
Is free from disease
How much colostrum should a calf receive in the first 2 hours?
1 L
2L
10% body weight in L
10L
What is the % of fat in colostrum?
6.7%
4%
3.2%
What is the % of protein in colostrum?
6.7%
4%
14.9%
2.5%
What is the length of oestrus cycle for a cow?
17 days
24-36 hours
21 days
18-24 hours
What is the duration of oestrus for a cow?
17 days
24-36 hours
21 days
18-24 hours
What is the gestation period for a cow?
147 days
115 days
21 days
283 dyas
What is the lactation period for a cow?
147 days
305 days
60 days
283 dyas
What is the drying of period for a cow?
147 days
305 days
60 days
283 dyas
What happens when a cow is said to be " milking off her back"
Which of these uses paint being rubbed of the cows back as an indicator of oestrus?
Chin ball and vasectomised bull
Activity monitor
Tail paint
Kamar device/Pressure pad
Which of these uses a GPS tracker to know when cows move more as an indicator of oestrus?
Chin ball and vasectomised bull
Activity monitor
Tail paint
Kamar device/Pressure pad
Which of these uses a bull that can no longer produce sperm and paint as an indicator of oestrus?
Chin ball and vasectomised bull
Activity monitor
Tail paint
Kamar device/Pressure pad
Which of these uses a vile full of paint that changes colour when broken by a cow after mounting as an indicator of oestrus?
Chin ball and vasectomised bull
Activity monitor
Tail paint
Kamar device/Pressure pad
What type of milking parlour is this?
(a)
Draw the shape of the lactation curve for a dairy cow.
What space should a cow have during winter housing with no cubicles?
1m2
2m2
3m2
4m2
