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Browsing by Subject "ryhmäimetys"

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  • Keskeytetyn imetyksen vaikutus imetyskäyttäytymiseen ryhmäimetyksessä 
    Nurminen, Reeta (2023)
    The aim of this study was to examine the impact of intermittent suckling on the nursing behavior of sows in group-housing facilities. This study included 33 sows that had been divided into ten subgroups. There were 3-5 sows per pen. Intermittent suckling started when piglets were four weeks old and lasted for seven days. Sows were filmed with cameras that had been placed in pens for three consecutive weeks: a week before intermittent suckling was started, during intermittent suckling and a week after intermittent suckling was discontinued. During intermittent suckling sows were kept away from piglets for eight hours daily. Video material was observed by one person and evaluation and data collection was based on pre-described ethogram. Nursing behavior was evaluated for four days: 1. 24 hours before starting intermittent suckling, 2. 24 hours after starting intermittent suckling, 3. 24 hours before the end of intermittent suckling and 4. 24 hours after the end of intermittent suckling. Final data was collected from 30 sows from nine subgroups. Data was analyzed using SPSS-program. Hypothesis was 1. the amount of nursings decrease during intermittent suckling, 2. the frequency of nursings increase shortly after sows return to piglets during intermittent suckling, 3. the amount of sow-terminated sucklings decrease during intermittent suckling. We found that intermittent suckling affected nursing behavior. The overall amount of nursing decreased during intermittent suckling, the frequency of nursing increased when sows returned back to piglets after intermittent suckling and the amount of nursings ended by sow decreased during intermittent suckling. Results were in conclusion with the hypothesis. This study shows that intermittent suckling has an effect on the nursing behavior of sows. This study doesn’t conclude whether intermittent suckling has an effect on the welfare of sows and piglets.
  • Keskeytetyn ja ryhmäimetyksen vaikutukset imetysten onnistumiseen porsastuotannossa 
    Tikkanen, Meiju (2019)
    Tiivistelmä * Referat * Abstract The aim of this study was to examine the impact of group suckling and intermittent suckling on the number of successful and unsuccessful sucklings among other parameters related to length and success of sucklings. Treatments were control, single and group. In single and group treatments sucklings were intermittent beginning tree weeks after piglets were born. The length of one intermission was 8 hours and they lasted five days in a row. In control and single treatments animals were kept in single pens and in group treatment in group pens with 2 - 3 sows. Data included information of 20 sows and was collected on video from each of the examined pens. Data was analyzed with SPSS program. Analyses were made for the comparison of control and single treatments and for the comparison of single and group treatments in timetables of 24 hours before first intermission, 16 hours after first intermission and 24 hours after last intermission. Within all treatments, comparison was also made for 24 hours before first intermission and 24 after last intermission as well as 24 hours before first intermission and 16 hours after first intermission. According to results, there were more successful sucklings in single treatment than in group treatment without the effect of intermittent suckling. However, intermittent suckling had a greater impact in successful sucklings in single treatment than in group treatment as the number of unsuccessful sucklings increased more in single than in group treatment. The number of unsuccessful sucklings decreased in both treatments by the fifth day. The results of intermittent suckling are in line with the hypothesis of this study as the number of unsuccessful sucklings increased during intermittent nursing. Instead the hypothesis regarding group suckling was not supported by results of this study because there were more unsuccessful nursings in group treatment than in single treatment. If carried out in the right way, group suckling can improve welfare of sows and piglets and intermittent suckling can improve piglet’s performance during and after weaning.

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