A/2Practical Piglet Weaning Systems, and their Digestion Physiological Background

Question 1

at what age are piglets weaned?

Answer 1

day 28

Question 2

what weight are pigelts at start of weaning?

Answer 2

7-9kg

Question 3

how long does weaning last for?

Answer 3

from day 28-42

Question 4

Describe feeding form day 28-42?

Answer 4

~5kg prestarter/piglet

(the amount is divided on the whole period not per day!)

Question 5

describe feeding from day 42-70?

Answer 5

prestarter+ starter(5 days for change, starter ad libitum)

then ~ 15kg starter/piglet(the amount is divided over the whole period not per day)!

Question 6

Describe the transition from prestarter to starter?

Answer 6

The transition from one diet to another must be gradual because we want the microflora to adopt, usually made over a 5 day period!

• Day 1:80% prestarter 20% starter
• Day 2:60% prestarter 40% starter
• Day 3: 40% prestarter 60% starter
• Day 4 : 20% prestarter 20% starter
• Day 5: 100% new diet

Question 7

Describe Days 71-90?

Answer 7

• piglets fed ad lib
• piglets have feed intake of 1.0-1.2 kg/day/piglet

Question 8

What happens on day 90?

Answer 8

from day 90 piglets are selected for either breeding pigs or fattening pigs.

Question 9

what is the CP % in prestarter, starter and piglet diet?

Answer 9

• Prestarter 21%
• Starter 21%
• piglet diet 18%

Question 10

DE(MJ/KG) Prestarter, starter and piglet diet?

Answer 10

14 MJ/KG for all 3!

Question 11

Why is Lysine important in pigs?

Answer 11

Lysine is the limiting amino acid in pigs!

Question 12

2 benefits of addition of Lysine in the diet of pigs?

Answer 12

→ Lysine is important additive to animal feed because it is limiting amino acid when optimizing the growth of certain animals such as pigs and chickens for the production of meat

→Lysine supplementation allows for use of lower cost plant protein( Maize for instance rather than soy)

while maintaing high growth rates and limiting the pollution from nitrogen excretion

Question 13

Definition of weaning?

Answer 13

Weaning is a big adjustment in social, thermal and physical enviroment and also a huge change in diet from and composition.

Question 14

describe the different types of weaning?(age and solid feed consumptio%)

Answer 14

→Traditional sysyem:

• age at weaning(weeks) 6 or more.
• Solid feed consumption % 70-80

→ Recent system usual

• age at weaning(weeks) 4-5 (28 days)
• Solid feed consumption % 50-60

→ segregated early weaning :

• age at weaning(weeks) : 2 weeks
• Solid feed consumption % very little

Question 15

What is Segregated early weaning?