The potential of feeding patterns to assess generic welfare in growing-finishing pigs

Bus, J.D.; Boumans, I.J.M.M.; Webb, L.E.; Bokkers, E.A.M.

doi:10.1016/j.applanim.2021.105383

Cited by 22 publications

(25 citation statements)

References 155 publications

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“…Feed intake rate can be interpreted as voracious eating [21]. Voracious eating increases over time since body size and oral capacity become larger, which allows pigs to take larger bites and eat more feed in a shorter time [6], as observed in the current study. Although changes in feed intake rate were observed in EP1 among periods of the day, no differences were detected during EP2.…”

Section: Discussionsupporting

confidence: 65%

“…Considering that a light-off event would be expected to lower the feed intake (positively correlated with voracious eating, [27]), the opposite behavior observed herein might be understood as a feeding motivation for pigs to try to compensate for the HS diurnal impact. In other words, the light-off event may have triggered some competition for feeder access, since group-housed pigs in restricted conditions increase voracity as a mechanism to maintain meal size levels [6].…”

Section: Discussionmentioning

confidence: 99%

“…The FB dynamics of pigs reared in constant HS differ from those of pigs reared in CHS [4]. In a CHS challenge, when the AT returns to the thermoneutrality (TN) zone, pigs increase VFI rapidly to similar levels to unchallenged pigs or can temporarily exceed the normal level [5,6]. Regarding the behaviors that underlie feed intake, meal size, ingestion time per day, and occupation time of the feeding station decrease as AT increases from 19 to 29 °C, while the daily number of meals remains constant [7].…”

Section: Introductionmentioning

confidence: 99%

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Feeding Behavior of Finishing Pigs under Diurnal Cyclic Variation in Ambient Temperature

Oliveira¹,

Valk²,

Melo³

et al. 2023

Preprint

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The impact of cyclic heat stress (CHS) and lighting events on pig feeding behavior (FB) was investigated. The FB of 90 gilts was recorded in real time under two ambient temperatures (AT): thermoneutrality (TN, 22 °C) or CHS (22°/35 °C). The day was divided into four periods: PI (06-08 h); PII (08-18 h); PIII (18-20 h); and PIV (20-06 h). Automatic and Intelligent Precision Feeders recorded each feed event for each pig. An estimated meal criterion (49 minutes) was used to calculate the FB variables. Feed behavior in both ATs followed a circadian pattern. The CHS reduced the feed intake by 6.9%. Pigs prioritized feed intake during the coolest hours of the day; however, nocturnal cooling did not allow the pigs to compensate for the reduced meal size due to CHS. The highest meal size and most of the meals were observed during the lighting-on period. Pigs reduced their interval between meals during periods II and III. The lighting program increased the meal size when the lights were switched on and reduced the meal size when the lights were switched off. Thus, the dynamics of the FB were largely influenced by AT, while the meal size was affected by the lighting program.

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Section: Discussionsupporting

confidence: 65%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Feeding Behavior of Finishing Pigs under Diurnal Cyclic Variation in Ambient Temperature

Oliveira¹,

Valk²,

Melo³

et al. 2023

Preprint

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“…Different studies support a relationship between animal welfare and growth performance. In pigs, feeding patterns may be used as welfare indicators, and different stressors have been shown to impact growth performance (Martínez-Miró et al 2016;Bus et al 2021). Furthermore, a recent study showed that intramuscular vaccination was associated with lethargy and decreased feed intake after weaning, compared to intradermal vaccination, resulting in decreased growth performance during the nursery period (Bruna Ferrandin et al 2022).…”

Section: Clinical Safety Evaluationmentioning

confidence: 99%

Comparison of effects of a single dose of MHYOSPHERE® PCV ID with three commercial porcine vaccine associations against Mycoplasma hyopneumoniae (Mhyo) and porcine circovirus type 2 (PCV2) on piglet growth during the nursery period under field conditions

Puig¹,

Bernal²,

Sabaté³

et al. 2022

Vet Res Commun

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Pigs routinely undergo stressful vaccination procedures, which are often unavoidable given the unavailability of safer alternatives, challenging animal welfare. The available vaccines for Mycoplasma hyopneumoniae (Mhyo) or Porcine circovirus type 2 (PCV2) are mostly administered intramuscularly in association to prevent Porcine respiratory disease complex (PRDC). MHYOSPHERE® PCV ID is the first vaccine protecting from both agents by intradermal route. This randomized, blind-field trial aimed to compare the effects of MHYOSPHERE® PCV ID with those of three different intramuscular associations of commercially available vaccines. A total of 7072 21-day-old piglets from 12 consecutive batches in one farm were randomly vaccinated with MHYOSPHERE® PCV ID (G1) or Ingelvac CircoFLEX® + Hyogen® (G2), Porcilis® PCV + M + PAC® (G3), and Porcilis® PCV + Hyogen® (G4). Growth performance during the nursery period and adverse reactions (ARs) after vaccine administration were monitored. Average Daily Weight Gain (ADWG) during the first 7 days post-weaning in G1 was 10.92, 3.03, and 20.08 g/day higher than in G2, G3, and G4, respectively, and 0.65, 4.06, and 9.58 g/day higher than in G2, G3, and G4 during the entire nursery period, respectively. G1 ADWG was significantly higher than G4 during both periods and significantly higher than G2 during the first 7 days post-weaning. Incidence of systemic ARs in G2 and G4 was 0.03% and 0.32%, respectively; none were recorded in G1 and G3. Replacing the usual intramuscular vaccination with MHYOSPHERE® PCV ID results in higher growth performance during the first weeks after weaning with no systemic ARs.

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“…Therefore, the main contribution to the maintenance concept is that it brings information at the individual level, which makes it an interesting and applicable tool for fields in which it is especially valuable to pay attention to the individuality of animals, such as in the assessment of the welfare of growing–finishing pigs. In fact, Bus et al [ 28 ] observed that reduced welfare is associated with deviations in FBHs. However, those authors reported that a large variability in FBHs among individuals exists and should be well understood before the variation that represents pig welfare can be interpreted, a case in which the use of the maintenance approach is of interest.…”

Section: Discussionmentioning

confidence: 99%

A New Approach to Detecting and Measuring Changes in the Feeding Behaviour Habits of Group-Housed Growing–Finishing Pigs

Fornós

Farré

López-Vergé

et al. 2022

Animals

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The present work aims to estimate the methods of repeatability and of a new non-parametric approach based on typifying individuals into classes and quantifying (%) the pigs in a group that show similar feeding behaviour habits (FBHs) in consecutive periods (“maintenance”). Both methods were estimated over six consecutive 14-day periods in two trials of group-housed growing–finishing pigs (n = 60 each). The first trial started in summer and ended in autumn, and pigs were fed a pelleted diet (HT-P). The second trial started in spring and ended in summer, and the same diet was fed mash (TH-M). The average daily feed intake obtained the lowest repeatability and maintenance values, and it progressively decreased as pigs grew, independent of environmental conditions or physical feed form, whereas the maintenance and repeatability of the number of feeder visits and the visit size decreased when environmental conditions changed from temperate to hot, and mash-fed pigs had higher maintenance and repeatability values for the time spent eating than pellet-fed pigs. In conclusion, the new approach (maintenance) is a tool that is complementary to the classic repeatability concept and is useful for analysing the evolution of FBHs across periods of time at the individual level.

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The potential of feeding patterns to assess generic welfare in growing-finishing pigs

Cited by 22 publications

References 155 publications

Feeding Behavior of Finishing Pigs under Diurnal Cyclic Variation in Ambient Temperature

Feeding Behavior of Finishing Pigs under Diurnal Cyclic Variation in Ambient Temperature

Comparison of effects of a single dose of MHYOSPHERE® PCV ID with three commercial porcine vaccine associations against Mycoplasma hyopneumoniae (Mhyo) and porcine circovirus type 2 (PCV2) on piglet growth during the nursery period under field conditions

A New Approach to Detecting and Measuring Changes in the Feeding Behaviour Habits of Group-Housed Growing–Finishing Pigs

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