Podcast Beta
Questions and Answers
What is the typical group size of feral pigs?
Which gender primarily composes the feral pig groups?
What type of stimuli are considered important for pigs?
What is one key aspect that has been observed in the social behavior of domesticated pigs?
Signup and view all the answers
What is the primary focus of the dominance hierarchy in pigs?
Signup and view all the answers
What is the relationship between teat order and dominance hierarchy among pigs?
Signup and view all the answers
How do pigs react when unacquainted pigs are put together?
Signup and view all the answers
Which rank in the dominance hierarchy submits to all other pigs?
Signup and view all the answers
How much more pellets do baby pigs consume compared to meal of the same composition?
Signup and view all the answers
What type of feeding system has a larger within-litter variance in daily gains?
Signup and view all the answers
Which breed of pig is noted for having a greater appetite and growing more rapidly?
Signup and view all the answers
What is the recommended ratio of feeder cups to pigs for optimum growth?
Signup and view all the answers
How does temperature affect the feed consumption of adult pigs?
Signup and view all the answers
What is a method to reduce unfavourable competition during feeding?
Signup and view all the answers
What happens to daily gains in pigs that are kept in groups according to dominance order?
Signup and view all the answers
Which management practice can modify appetite levels in pigs?
Signup and view all the answers
What atmospheric condition is associated with an increased incidence of tail-biting in pigs?
Signup and view all the answers
Which factor was shown to reduce the chances of tail-biting in pigs?
Signup and view all the answers
What conclusion did Ewbank reach regarding diet and tail-biting?
Signup and view all the answers
What was a potential cause of tail-biting, besides poor atmospheric conditions?
Signup and view all the answers
What was the threshold level of ammonia mentioned as 'irritating' for pigs at 23°C and 80% RH?
Signup and view all the answers
What additional benefit does straw bedding provide to pigs besides comfort?
Signup and view all the answers
What did Bowden suggest about tail-biting outbreaks?
Signup and view all the answers
Which hypothesis was formulated after an extensive survey regarding tail-biting?
Signup and view all the answers
What significant advantage do high-ranking pigs have during the suckling and post-weaning periods?
Signup and view all the answers
What is the main mechanism used by pig groups to regulate social behavior?
Signup and view all the answers
What behavior is primarily observed among piglets during the establishment of their suckling order?
Signup and view all the answers
What do adult boars typically do when they are first penned together?
Signup and view all the answers
What is a common behavior seen during a serious encounter between two adult boars?
Signup and view all the answers
What aspect of social behavior in pigs has been notably affected by confinement according to Ewbank's observation?
Signup and view all the answers
How do dominant boars typically initiate a fight with each other?
Signup and view all the answers
What type of behavior is less common among piglets after the suckling order is established?
Signup and view all the answers
Which research focused on the effects of conditioned behavior and environmental factors on plasma corticosteroid levels in pigs?
Signup and view all the answers
What was the primary variable investigated by Barber, Braude, and Mitchell regarding pig production?
Signup and view all the answers
Which study analyzed the social dominance behavior in swine?
Signup and view all the answers
What aspect of pig reproduction was addressed by Boda in 1959?
Signup and view all the answers
Which factor was studied by Bryant in relation to the behavior of the growing pig?
Signup and view all the answers
What relationship was observed by Braude and Mitchell regarding milk ejection in sows?
Signup and view all the answers
Which research addressed the implications of housing conditions on animal health and production?
Signup and view all the answers
What did Betteridge & Raeside investigate as an indicator of ovarian activity in pigs?
Signup and view all the answers
Study Notes
Quantitative Regulation of Food Intake
- Baby pigs consume 6 times more pellets than meal of the same composition.
- Feeding patterns of weanling and adult pigs are influenced by management systems.
- Pigs may be stimulated to eat by the movement of others from the nesting area to the feeder.
- Group size and interaction of the sexes affect growth and feed consumption.
- Barrows (male pigs castrated before sexual maturity) grow more rapidly than gilts (female pigs) when fed in groups, but the reverse is true for individually fed animals.
- Daily gains do not differ significantly, but the within-litter variance is 4 times larger under group feeding, suggesting influences of dominance order.
- Pigs grow more rapidly when there is competition for space at a self-feeder.
- The optimum number of feeder cups is 1 for each 5 pigs.
- Feed consumption decreases as temperature increases from 40 to 100°F (4·4 to 37·8°C).
- In a cold environment, thermogenesis uses energy from feed that would be converted to meat at higher environmental temperatures.
- Feed requirement does not increase during the winter if nest areas are provided with electrically heated floors.
- Appetite levels can be modified by genetic selection.
Social Behaviour in Pigs
- Feral pigs typically live in herds of less than 10 individuals, but groups with up to 80 animals can form.
- The groups generally consist entirely of females and their young, but boars join the groups during the reproductive season.
- Tactile stimuli are important to pigs, and they usually have bodily contact with other members of the group when resting.
- Social grooming is rare.
Dominance Order
- Piglets establish a teat order when they compete for the preferred anterior teats.
- A dominance hierarchy is established after weaning.
- When unacquainted pigs are put together, they fight and establish a linear dominance hierarchy.
- High-ranking pigs have a significant advantage, and body weight and social status are associated in a positive feedback system.
Agonistic Behaviour
- Piglets fight early in their lives, particularly during the establishment of the suckling order.
- Adult boars engage in agonistic behavior to establish social dominance.
- Tail-biting can be caused by bad atmospheric conditions, including high levels of carbon dioxide and ammonia.
- Tail-biting can also be caused by "boredom" and a lack of environmental enrichment.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz explores the feeding behavior and dietary patterns of pigs, focusing on factors that influence their food intake. Topics include the effects of group dynamics, management systems, and environmental conditions on pig feeding. Learn how these factors impact growth and feed consumption in different pig populations.
