Podcast
Questions and Answers
What is the typical group size of feral pigs?
What is the typical group size of feral pigs?
Which gender primarily composes the feral pig groups?
Which gender primarily composes the feral pig groups?
What type of stimuli are considered important for pigs?
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?
What is one key aspect that has been observed in the social behavior of domesticated pigs?
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What is the primary focus of the dominance hierarchy in pigs?
What is the primary focus of the dominance hierarchy in pigs?
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What is the relationship between teat order and dominance hierarchy among pigs?
What is the relationship between teat order and dominance hierarchy among pigs?
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How do pigs react when unacquainted pigs are put together?
How do pigs react when unacquainted pigs are put together?
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Which rank in the dominance hierarchy submits to all other pigs?
Which rank in the dominance hierarchy submits to all other pigs?
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How much more pellets do baby pigs consume compared to meal of the same composition?
How much more pellets do baby pigs consume compared to meal of the same composition?
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What type of feeding system has a larger within-litter variance in daily gains?
What type of feeding system has a larger within-litter variance in daily gains?
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Which breed of pig is noted for having a greater appetite and growing more rapidly?
Which breed of pig is noted for having a greater appetite and growing more rapidly?
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What is the recommended ratio of feeder cups to pigs for optimum growth?
What is the recommended ratio of feeder cups to pigs for optimum growth?
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How does temperature affect the feed consumption of adult pigs?
How does temperature affect the feed consumption of adult pigs?
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What is a method to reduce unfavourable competition during feeding?
What is a method to reduce unfavourable competition during feeding?
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What happens to daily gains in pigs that are kept in groups according to dominance order?
What happens to daily gains in pigs that are kept in groups according to dominance order?
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Which management practice can modify appetite levels in pigs?
Which management practice can modify appetite levels in pigs?
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What atmospheric condition is associated with an increased incidence of tail-biting in pigs?
What atmospheric condition is associated with an increased incidence of tail-biting in pigs?
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Which factor was shown to reduce the chances of tail-biting in pigs?
Which factor was shown to reduce the chances of tail-biting in pigs?
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What conclusion did Ewbank reach regarding diet and tail-biting?
What conclusion did Ewbank reach regarding diet and tail-biting?
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What was a potential cause of tail-biting, besides poor atmospheric conditions?
What was a potential cause of tail-biting, besides poor atmospheric conditions?
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What was the threshold level of ammonia mentioned as 'irritating' for pigs at 23°C and 80% RH?
What was the threshold level of ammonia mentioned as 'irritating' for pigs at 23°C and 80% RH?
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What additional benefit does straw bedding provide to pigs besides comfort?
What additional benefit does straw bedding provide to pigs besides comfort?
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What did Bowden suggest about tail-biting outbreaks?
What did Bowden suggest about tail-biting outbreaks?
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Which hypothesis was formulated after an extensive survey regarding tail-biting?
Which hypothesis was formulated after an extensive survey regarding tail-biting?
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What significant advantage do high-ranking pigs have during the suckling and post-weaning periods?
What significant advantage do high-ranking pigs have during the suckling and post-weaning periods?
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What is the main mechanism used by pig groups to regulate social behavior?
What is the main mechanism used by pig groups to regulate social behavior?
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What behavior is primarily observed among piglets during the establishment of their suckling order?
What behavior is primarily observed among piglets during the establishment of their suckling order?
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What do adult boars typically do when they are first penned together?
What do adult boars typically do when they are first penned together?
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What is a common behavior seen during a serious encounter between two adult boars?
What is a common behavior seen during a serious encounter between two adult boars?
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What aspect of social behavior in pigs has been notably affected by confinement according to Ewbank's observation?
What aspect of social behavior in pigs has been notably affected by confinement according to Ewbank's observation?
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How do dominant boars typically initiate a fight with each other?
How do dominant boars typically initiate a fight with each other?
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What type of behavior is less common among piglets after the suckling order is established?
What type of behavior is less common among piglets after the suckling order is established?
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Which research focused on the effects of conditioned behavior and environmental factors on plasma corticosteroid levels in pigs?
Which research focused on the effects of conditioned behavior and environmental factors on plasma corticosteroid levels in pigs?
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What was the primary variable investigated by Barber, Braude, and Mitchell regarding pig production?
What was the primary variable investigated by Barber, Braude, and Mitchell regarding pig production?
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Which study analyzed the social dominance behavior in swine?
Which study analyzed the social dominance behavior in swine?
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What aspect of pig reproduction was addressed by Boda in 1959?
What aspect of pig reproduction was addressed by Boda in 1959?
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Which factor was studied by Bryant in relation to the behavior of the growing pig?
Which factor was studied by Bryant in relation to the behavior of the growing pig?
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What relationship was observed by Braude and Mitchell regarding milk ejection in sows?
What relationship was observed by Braude and Mitchell regarding milk ejection in sows?
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Which research addressed the implications of housing conditions on animal health and production?
Which research addressed the implications of housing conditions on animal health and production?
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What did Betteridge & Raeside investigate as an indicator of ovarian activity in pigs?
What did Betteridge & Raeside investigate as an indicator of ovarian activity in pigs?
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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.
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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.
