Page 321 - Primary Five Science

Advantages of housing pig

 It protects the pigs against bad weather

 Security. It protects the pigs against predators and thieves

 It prevents from getting diseases easily

 It gives the farmer space for keeping record books and feeds

for pig.

Systems of keeping pigs

1. Extensive system

This is where pigs are allowed to move freely and later gather

for feeding and treatment

Advantages of extensive system

 It is cheap to maintain since a farmer does not feed pig regu-

larly.

 The Pigs get a variety of food to eat

 It is not labour intensive

Disadvantages of extensive system

 Security. The animals are not safe from predators or thieves

 The pigs can easily get infected with worms, pests and dis-
ease

 The pigs can destroy crops

 Pigs move a lot. This exercise slows their weight gain

 While out there, pigs may not get enough food