A2

Question 1

How many possible weaning systems are there for piglets?

Answer 1

1. Traditional
2. Recent system
3. SEW: Segregated Early Weaning

Question 2

If traditional weaning, how old and what is the BW?

Answer 2

6 weeks or more

9-10 kg

Question 3

If recent system weaning, how old and what is the BW?

Answer 3

4-5 weeks old (28 days)

7-9 kg

Question 4

If SEW weaning, how old and what is the BW?

Answer 4

2 weeks

3-4 kg

Question 5

what is the traditional weaning system?

Answer 5

Used in smaller farms.
Piglet are weaned later, making the total duration longer and it will decrease the number of litter and the life cycle

Question 6

What is the recent system weaning?

Answer 6

Good, because there are high litter sizes and low technological.

Immunological protection is weak, so around weaning (4 weeks) the maternal IgG and the piglets own immunoglobulins are low = weak immune system

Question 7

What is the SEW weaning system?

Answer 7

Segregated early weaning

Piglets are weaned before the maternal immunity drops = have high maternal immunoglobulins.

Milk replacers have to be used, so more expensive weaning method.

Question 8

Why give milk replacer when using SEW weaning method?

Answer 8

Diet should be similar to sows milk.

Question 9

Name some problems related to weaning stress:

Answer 9

Nutritional, pshyiological, environmental and social stress.

If too stressfull = sick and die

Question 10

What happens to the DM intake due to stress?

Answer 10

It decreases.

A 10 days adaption period is important at weaning, because the enzyme production decreases before it increases.

Question 11

How many phases is the piglet fed?

Answer 11

Early weaning (before 21 days): 4 phases
- Milk replacer, starter diet, starter, grower

Weaning at 28 days: 3 phases
- starter diet, starter, grower

Question 12

How much CP and DE of prestarter is needed before weaning?

Answer 12

CP: min. 21%
DE: 14 MJ/kg

Question 13

How much CP and DE of prestarter is needed after weaning?

Answer 13

CP: 21%
DE: 14.2 MJ/kg

Question 14

If weaned before 2 weeks, SEW, how much CP does the milk replacer contain?

Answer 14

CP=25-26%

Question 15

DM intake during the weaning period:

Answer 15

• From day 28-38: 4% BW
• From day 43-70: 15 kg/piglet/day

Question 16

What type of feed supplement is given to a piglet that is weaned before 21 days?

Answer 16

Starch
Fat/Oil
Sweet sugar to improve taste

Question 17

What type of feed supplement is given to a piglet that is weaned after 28 days?

Answer 17

Acids
Probiotics, yeast
Clays = binds toxins
Enzymes= helps with digestion
Essential AA