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| 2. |
- Olsson, Anne-Charlotte, et al.
(författare)
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Animal interaction and response to electronic sow feeding (ESF) in 3 different herds and effects of function settings to increase capacity
- 2011
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Ingår i: Livestock Science. - : Elsevier BV. - 1871-1413 .- 1878-0490. ; 137, s. 268-272
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Tidskriftsartikel (refereegranskat)abstract
- ESF feeding technology is one of the available choices for the group housing of gestating sows. The general objective of this investigation was to study animal interaction and response to ESF feeding in 3 sow herds. The focus was on the effect of the EFS settings used to determine feeder capacity (feed delivery intervals, amount to be delivered, gate management), on animal interactions and attacks at the feeder, and on the occurrence of vulva lesions and skin injuries. More than 50 % of the sow visits to the feeder were non-feeding visits, and sows attacking a sow when she entered the feeder were noted in one third of the visits. When changing sows in the feeder, 4-6 sows queued at the entrance gate; it was found that one third of these had eaten previously. Vulva bites were seen in up to one third of the sows; many of these bites were serious, bleeding lesions. Feeder settings which increased the capacity, thus shortening the available feeding time, also resulted in significantly more sow queuing. In addition, the presence of serious vulva bites was more pronounced in the herd with the highest capacity settings. An increase in feed spillage and the presence of unusual bite lesions at the root of the tail were also attributed to settings for higher capacity (shorter available eating times). It was concluded that the biological function (how sows relate to the system) depended very much on the feeder settings
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| 4. |
- Olsson, Anne-Charlotte, et al.
(författare)
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Klövskador hos suggor : en pilotstudie för att öka förståelsen av hur skadorna uppkommer
- 2011
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Ingår i: LTJ-fakultetens faktablad.
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Annan publikation (populärvet., debatt m.m.)abstract
- Klövskador hos suggor under sinperioden är ett växande bekymmer. Klövskador orsakar lidande för djuren och leder ofta till för tidig utslagning eftersom djurens produktion påverkas negativt. Att hålla suggorna lösgående i grupp jämfört med att ha suggorna fixerade ökar problemen. I denna pilotstudie har klövskador hos gyltor som omgrupperats vid tre tillfällen under tillväxten jämförts med klövskador hos gyltor som under tillväxten hållits i intakta grupper. Det utförda pilotförsöket visar tydligt på att en ökad aktivitet hos djuren i form av konflikter i samband med omgrupperingar, förutom fler bit- och rivskador också ger upphov till fler klövskador på djuren. De hittills erhållna resultaten är mycket intressanta och visar på att konflikter och annat aggressivt beteende, som ses bl a i samband med blandningar av djur, kan vara en starkt bidragande orsak till en hög förekomst av klövskador. Detta har inte dokumenterats tidigare. Omgrupperingar av djur kan användas som ”modell” för att öka belastningen på klövarna. En sådan ”modell” bör med framgång kunna användas i samband med tester av närmiljödetaljer (golvmaterial o d) som bedöms kunna ge mindre slitage på klövarna och en långsiktigt förbättrad klövhälsa hos våra suggor.
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| 5. |
- Olsson, Anne-Charlotte, et al.
(författare)
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Pen hygiene, N, P and K budgets and calculated nitrogen emission for organic growing-finishing pigs in two different housing systems with and without pasture access
- 2014
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Ingår i: Livestock Science. - : Elsevier BV. - 1871-1413 .- 1878-0490. ; 165, s. 138-146
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Tidskriftsartikel (refereegranskat)abstract
- The effects of two housing systems (deep litter and straw-flow), with and without access to pasture during the summer period, were studied in an organic growing-finishing pig herd. Pen hygiene studies, N, P and K budgets and estimations of nitrogen emission were made for two batches (8 pens/batch and 16 pigs/pen) one during the winter period and one during the summer period. It was concluded that there were no significant differences in overall pen hygiene between the housing systems. During the growing period in the summer, the pen hygiene on the outdoor concrete area was significantly better (P < 0.05) when the pigs had access to pasture. In addition, the total pen hygiene (indoors+concrete area outdoors) tended (P=0.09) to be cleaner with access to pasture during the summer period. The N-losses of the amount of N excreted were the same (26-27%) during the winter period as during the summer period. The amount of N excreted was on average 6.0 kg N per pig during the winter, and 4.2 kg N per pig during the summer; this was equivalent to an N-emission of 1.5-1.6 kg N/pig during winter and 1.1-1.2 kg N/pig during summer. The difference was mainly due to a higher feed consumption and more straw usage during the winter. In comparison to the calculated N-emissions from a non-organic pig, this was approximately 3-4 times greater. In the present study, a 10% larger feed usage explained the differences in N-emission by a factor of 1.2, a 15% higher crude protein level explained the differences by a factor of 1.3 and finally a larger fouled area explained the differences by a factor of 2.3. Differences in temperature and airflow were not taken into account in these calculations. (C) 2014 Elsevier B.V. All rights reserved.
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| 8. |
- Pierzynowski, Stefan, et al.
(författare)
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Behavioral changes in response to feeding pancreatic-like enzymes to exocrine pancreatic insufficiency pigs.
- 2012
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Ingår i: Journal of Animal Science. - : Oxford University Press (OUP). - 1525-3163 .- 0021-8812. ; 90:Suppl 4, s. 439-441
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Tidskriftsartikel (refereegranskat)abstract
- Behavioral changes during pancreatic enzyme therapy have never been studied. The present study investigated behavioral changes in exocrine pancreatic insufficiency (EPI) pigs when their feed was supplemented with pancreatic-like enzymes of microbial origin. A crossover design study was used to test the effect of enzyme supplementation in 2 × 4 EPI pigs that underwent pancreatic duct ligation (PDL). After 40 d of adaptation, the study commenced, comprising 2 control and 2 enzyme feeding periods of 10 d each in sequence. On days 7 and 10 of each experimental period, behavior was monitored for 24 h and feed consumption and BW were recorded. Behavioral observations focused on the pigs' activity- lying down or passive, or sitting, or standing or active-and were expressed as percentage activity for 24 h. During the adaptation period, BW gain was completely inhibited after PDL whereas for the entire study period, the body weight increased from 10.5 ± 1.1 to 14.0 ± 1.4 kg (P < 0.01). Exocrine pancreatic insufficiency pigs were more active when fed the enzymes (21 vs. 18% per 24 h; P < 0.01). Microbial enzyme supplementation not only improved the growth of the EPI pigs but it also increased their activity. This behavior change contradicts the generally accepted norm that satiety evokes by digestion and subsequent nutrients absorption reduces human or animal motility.
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| 9. |
- Pierzynowski, Stefan, et al.
(författare)
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Exogenous pancreatic-like enzymes are recovered in the gut and improve growth of exocrine pancreatic insufficient pigs
- 2012
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Ingår i: Journal of Animal Science. - : Oxford University Press (OUP). - 1525-3163 .- 0021-8812. ; 90, s. 324-326
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Tidskriftsartikel (refereegranskat)abstract
- The exocrine pancreatic insufficient (EPI) pigs grow less due to different disturbances in feed digestion, absorption, and retention. Use of pancreatic-like enzymes of microbial origin in pigs may improve feed use and performance in slow-growing pigs. The aim was to study gut recovery and effectiveness of pancreatic-like enzymes of microbial origin supplementation on pig performance. Six male pigs 10 to 12 kg BW underwent pancreatic duct ligation surgery to induce total exocrine pancreatic insufficiency (EPI). Three cannulas to access the gastrointestinal tract content were installed in stomach, duodenum, and ileum in EPI pigs and in 3 control (healthy) pigs. One month after surgery, enzymes were given before feeding and digesta samples were collected for analyses. The BW of EPI pigs did not increase during 1 mo following surgery (11.7 vs. 11.6 kg BW); however, BW increased after 1 wk of enzyme supplementation (12.1 kg BW). Coefficient of fat and N absorption increased (P < 0.05) in EPI pigs after enzyme supplementation. Activity of amylase, lipase, and protease in chyme samples of EPI pigs was very low compared to controls. In EPI pigs after enzyme supplementation, amylase activity increased from 5.32 to 72.9 units/mL but remained lower than that of healthy pigs (162.7 units/mL). Lipase activity increased from 79.1 to 421.6 units/mL, which was similar to that of controls (507.3 units/mL). Proteolytic activity increased from 7.8 to 69.7 units/mL but still did not reach control pigs (164.3 units/mL). In conclusion, exogenous microbial enzymes mimic endogenous pancreatic enzymes being recovered along the lumen of the gastrointestinal tract. These enzymes might be a useful tool to stimulate growth of slower-growing pigs after the weaning period.
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| 10. |
- Prykhodko, Olena, et al.
(författare)
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Hormonal and immune profiles in blood were unaffected by PHA provocation in suckling and weaning pigs
- 2010
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Ingår i: Livestock Science. - : Elsevier BV. - 1871-1413 .- 1878-0490. ; 133:1-3, s. 253-256
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Konferensbidrag (refereegranskat)abstract
- The lectin, phytohaemagglutinin (PHA), from red kidney beans has been shown as an inducer of growth and precocious gastrointestinal (Cl) maturation in suckling animals, thus better preparing piglets for the weaning procedure. PHA exposure results in the release of gut peptide hormones and/or activation of the Cl immune system. The aim of this study was to elucidate the mechanisms of PHA provocation by studying changes in the blood/plasma levels of major gut hormones, immune parameters and acute phase proteins. Suckling, 9-10 day-old, littermate piglets were gavage fed PHA, either in purified or crude form or, as a control, alpha-lactalbumin (n = 5-6 pigs/group) and blood was obtained repeatedly during one week and after weaning at 5 weeks. No significant differences in the blood parameters between PHA-treated pigs in comparison to their time-matched controls were found during the first week after treatment. At weaning significant changes in hormonal (insulin) and immune (WBC) parameters and CRP were observed, however, these effects were independent of earlier PHA treatment. In conclusion, PHA, given enterally as a single dose, did not affect the basal blood parameters analysed, during both the suckling and post-weaning periods in piglets. (C) 2010 Elsevier B.V. All rights reserved.
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