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Vliv sourozenecké kompetice během přítomnosti u struku na mateřské chování u prasete domácího
Leszkowová, Iva ; Illmannová, Gudrun (advisor) ; Špinka, Marek (referee)
This diploma thesis deal with the neonatal sibling competition during nursing within first day after farrowing, focusing on maternal reaction on neonatal sibling competition during nursing. We predicted that the sow will terminate nursing by a changing posture or by a non- nutritive nursing (i.e. nursing without milk ejection) with increasing number of fights and screams. A total of 19 healthy sows and their litters were directly observed and video recorded during first day after farrowing for 6 h. The behaviour of piglets (fighting, screaming, presence at the udder) in the pre massage and the post massage was scored every 15 seconds. Piglets which missed milk ejection, posture changing of the sow and whether the nursing involve milk ejection were noted. A sum of fighting and screaming piglets in the pre massage and the post massage was calculated. A higher sum of fighting and screaming piglets correlated with a higher proportion of non-nutritive nursing (P<0.001) as well as with a higher proportion of sow posture changing in the pre massage (P<0.01). However, a higher sum of fighting and screaming piglets did not increase the probability of sow posture changing in the post massage. The results show a positive correlation between the litter size and the sum of fighting and screaming piglets in the...
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Vliv sourozenecké kompetice během přítomnosti u struku na mateřské chování u prasete domácího
Leszkowová, Iva ; Illmannová, Gudrun (advisor) ; Špinka, Marek (referee)
This diploma thesis deal with the neonatal sibling competition during nursing within first day after farrowing, focusing on maternal reaction on neonatal sibling competition during nursing. We predicted that the sow will terminate nursing by a changing posture or by a non- nutritive nursing (i.e. nursing without milk ejection) with increasing number of fights and screams. A total of 19 healthy sows and their litters were directly observed and video recorded during first day after farrowing for 6 h. The behaviour of piglets (fighting, screaming, presence at the udder) in the pre massage and the post massage was scored every 15 seconds. Piglets which missed milk ejection, posture changing of the sow and whether the nursing involve milk ejection were noted. A sum of fighting and screaming piglets in the pre massage and the post massage was calculated. A higher sum of fighting and screaming piglets correlated with a higher proportion of non-nutritive nursing (P<0.001) as well as with a higher proportion of sow posture changing in the pre massage (P<0.01). However, a higher sum of fighting and screaming piglets did not increase the probability of sow posture changing in the post massage. The results show a positive correlation between the litter size and the sum of fighting and screaming piglets in the...
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Function and strategies of a neonatal sibling competition during access to teats in domestic pigs
Věchetová, Markéta ; Illmannová, Gudrun (advisor) ; Hejcmanová, Pavla (referee)
Domestic pigs have a high piglet mortality up to 20% during the first days post partum. It is unclear whether piglet mortality is caused by neonatal litter competition. Piglets are precocial and capable of active competition within minutes of birth on access to teats. There is very little known about this theme. The aim of the study is to review the behavioural mechanism of neonatal sibling competition during teat access and their consequences in domestic pigs. Factors which influence the level of neonatal litter competition should be considered. The consequences of the neonatal sibling competition should be reviewed on the survival and life history of individual piglets. Based on the knowledge from the literature an experimental design should be suggested for further experiments which clarify unknown aspects of litter competition.
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