Behavioral Characteristics of Weaned Piglets Mixed in Different Groups

Hwang, Hyun-Su; Lee, Jae-Kang; Eom, Tae-Kyung; Son, Seung-Hun; Hong, Ji‐Yeon; Kim, Ki‐Hyun; Rhim, Shin‐Jae

doi:10.5713/ajas.15.0734

Cited by 20 publications

(9 citation statements)

References 17 publications

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“…The frequency of the individual performing the behaviour, as well as the individual receiving the behaviour, was noted. The behavioural time values presented are the means and standard errors of the relative frequencies of each behaviour, calculated from the results obtained from the observation of each group (Rhim et al 2015;Hwang et al 2016).…”

Section: Methodsmentioning

confidence: 99%

Effect of toys on behaviour and body weight of weaned pigs after mixing

Hwang¹,

Lee²,

Eom³

et al. 2021

CZECH J ANIM SCI

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This study was conducted to evaluate the effects of a toy on the behaviour and body weight of weaned pigs after mixing. Two groups (192 pigs in total, control: without toy; treatment: with toy placed on the floor) of weaned pigs housed in pens (1.8 m × 1.4 m, 4 pigs/pen) were This study was conducted to evaluate the effects of a toy on the behaviour and body weight of weaned pigs after mixing. Two were observed with the aid of video technology for nine consecutive hours in the early (days 1 and 2) and late (days 38 and 39) period after mixing. Bodyweight of pigs at the end of the study (Mann-Whitney U-test, Z = –2.46, P = 0.01) and the average daily gain (Z = –2.75, P < 0.01) were 10% higher in the treatment group than in the control group. The presence of the toy in the pen influenced the pig behaviours. In pens enriched with toys, there was an increase in feeding behaviour and a decrease in agonistic and belly nosing behaviours. Toy supply reduced negative social behaviours and thereby improved the bodyweight of weaned pigs. The results of this study suggest that toys used as environmental enrichment are useful for enhancing pig welfare and effective for farmers.

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Section: Methodsmentioning

confidence: 99%

Effect of toys on behaviour and body weight of weaned pigs after mixing

Hwang¹,

Lee²,

Eom³

et al. 2021

CZECH J ANIM SCI

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“…Sow behavior count and AUC data showed lack of normality and heterogeneity of variance. Data were transformed using the equation (( X ’3 = log 10( X + 0.5) + 0.5) to achieve variance homogeneity ( Hwang et al, 2016 ). The transformed count behavior, FFA, and AUC data were analyzed by fitting a logistic model using the GLIMMIX procedure.…”

Section: Methodsmentioning

confidence: 99%

Behavioral and cortisol responses to feeding frequency in pregnant sows under isocaloric intake

Manu

Lee²,

Keyes³

et al. 2020

Journal of Animal Science

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The study focused on behavioral and cortisol responses to feeding frequency in pregnant sows under iso-caloric intake. Twenty-four sows [(Landrace × Yorkshire); BW 216.70 ± 3.98 kg; parity 3.04 ± 0.53] were balanced for parity and randomly assigned to 1 of 3 feeding frequency regimes. Sows were fed corn-soybean meal-based diet 1× [0730 (Control), T1], 2× [half ration at 0730 and 1530 h, T2], or 3× [one third portion at 0730, 1130, and 1530 h, T3] from days 30 to 60 of gestation. Sows received 7055 kcal ME/d during gestation from 2.21 kg of diet formulated to contain SID Lys/ME of 1.71 g/Mcal. Saliva samples were collected every 2 hours from 0630 to 1830 h on d 52 and assayed for cortisol using ELISA procedure. Behavior data were collected for 7 d from d 53 of gestation by affixing a remote insights ear tag to each sow. Each sow had 120,960 data points categorized into: "Active", "Feed" or "Dormant". Because of housing constraint, all sows were housed in individual stalls in the same room presenting a potential limitation of the study. The data were analyzed using PROC MIXED and GLIMMIX procedures of SAS 9.4 for cortisol and behavior count data, respectively. Sow was the experimental unit. The area under the curve (AUC) is quantitative evaluation of response as threshold varies over all possible values. The T2 sows had reduced 12-h cortisol AUC compared with control sows (P = 0.024) and T3 sows (P = 0.004), respectively. The T2 sows had lower 3-h (P = 0.039) and 5-h (P = 0.015) post-feeding cortisol AUC compared with control sows. Feed anticipatory activity (FAA), 24-h total activity, and feeding activities (eating and/or sham chewing) were reduced for T2 sows relative to the control and T3 sows (P < 0.01). Consequently, T2 sows had lower 24-h total activity (P < 0.001) and feeding activities (P < 0.001) AUC compared with both the control and T3 sows, respectively. The T3 sows had greater FAA (P < 0.001) and 24-hour total activity AUC (P = 0.010) compared with control sows. Our data although inconclusive due to small sample size, twice daily feeding appears to be the threshold that reduces sows’ total activity AUC, feeding activity AUC, and activation of HPA axis, reduced hunger, and exhibit potential to improve sow welfare in relation to once and thrice daily feeding regimes under iso-caloric intake per kilogram live metabolic weight.

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“…The duration and frequency of the individual performing the behavior, as well as the individual receiving the behavior, was noted. The behavioral time values presented are the means and standard errors of the relative frequencies of each behavior, calculated from the results obtained from each observation of each group [ 12 , 22 ].…”

Section: Methodsmentioning

confidence: 99%

“…The mixed piglets are exposed to harsh conditions with changed social and physical environments. Moreover, considerable stress is caused by the changes in diets, rearing conditions, housing, and neighbors that result from mixing [ 11 , 12 ]. The behavior of piglets following mixing is an animal welfare concern, and it has bearing on the search for husbandry and care methods that reduce stress [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Behaviors and body weight of suckling piglets in different social environments

Hong

Kim

Hwang

et al. 2016

Asian-Australas J Anim Sci

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ObjectiveThis study was conducted to characterize the behaviors and the body weight of suckling piglets in different social environments.MethodsTwo groups of sows and suckling piglets housed either in individual farrowing crates in separate pens (1.8×2.4 m, the control group) or in groups of three sows with their piglets in farrowing crates in a large common enclosure (5.4×2.2 m, the treatment group) were observed with the aid of video technology for 9 consecutive hours on days 1, 2, and 3, after mixing.ResultsSuckling, agonistic, and elimination behaviors of suckling piglets were significantly higher in the control group than in the treatment group. Inactive behavior was higher in the treatment group than in the control group. Most of the effects of the social environment on the suckling piglets seem to be the result of large reductions in behaviors and body weight for piglets switching from high activity to low activity. Moreover, suckling behavior and birth body weight were highly correlated with body weight at the end of the test.ConclusionThe social environment that resulted from mixing, thus, had significant effects on the behavior and body weight of suckling piglets, and behavioral characteristics, therefore, should be considered when making improvements to the husbandry and care methods used in swine production.

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Behavioral Characteristics of Weaned Piglets Mixed in Different Groups

Cited by 20 publications

References 17 publications

Effect of toys on behaviour and body weight of weaned pigs after mixing

Effect of toys on behaviour and body weight of weaned pigs after mixing

Behavioral and cortisol responses to feeding frequency in pregnant sows under isocaloric intake

Behaviors and body weight of suckling piglets in different social environments

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