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Agriculture for Secondary Schools
Vices in pigs: Vices in pigs are commonly caused by poor environment and inadequate
management which leads to aggression. Aggressive pigs will behave differently
from the normal ones. Common vices in pigs include tail biting, ear biting, navel or
penis sucking and flank biting. Figures 6.9(a) and (b) show tail biting in pigs.
Figure 6.9 (a): Tail biting Figure 6.9 (b): Bitten pig tail
Factors encouraging vices in pigs
(a) Change in diets
(b) Extra-long pig tails
(c) Aggressive pig breeds
(d) Too humid environment
(e) Temperature fluctuations
(f) Lack of bedding materials
(g) High stocking density
(h) Lack of water
(i) Inadequate feeder spaces
(j) Poor nutrition especially protein and mineral deficiency
Control measures of vices in pigs
(a) Isolate the affected animal and treat it.
(b) Isolate the aggressive animals which cause problems.
(c) Identify any other cause and resolve it.
Student’s Book Form Three
134
10/01/2025 12:31
AGRICULTURE FORM 3 9.11.2022.indd 134
AGRICULTURE FORM 3 9.11.2022.indd 134 10/01/2025 12:31
