Development of a Group-Adapted Housing System for Pregnant Sows: A Field Study on Performance and Welfare Aspects

Eva Angermann, Camille M. C. Raoult, Monika Wensch-Dorendorf, Stephanie Frenking, Nicole Kemper and Eberhard von Borell
Additional contact information
Eva Angermann: Institute of Agricultural and Nutritional Sciences, Department of Animal Husbandry and Ecology, Martin-Luther-University Halle-Wittenberg, Theodor-Lieser-Str 11, 06120 Halle (Saale), Germany
Camille M. C. Raoult: Institute of Agricultural and Nutritional Sciences, Department of Animal Husbandry and Ecology, Martin-Luther-University Halle-Wittenberg, Theodor-Lieser-Str 11, 06120 Halle (Saale), Germany
Monika Wensch-Dorendorf: Institute of Agricultural and Nutritional Sciences, Department of Biometrics and Agricultural Informatics in Agriculture, Martin-Luther-University Halle-Wittenberg, Freiherr-von-Fritsch Str 4, 06120 Halle (Saale), Germany
Stephanie Frenking: Institute for Animal Nutrition, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173 Hannover, Germany
Nicole Kemper: Institute of Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173 Hannover, Germany
Eberhard von Borell: Institute of Agricultural and Nutritional Sciences, Department of Animal Husbandry and Ecology, Martin-Luther-University Halle-Wittenberg, Theodor-Lieser-Str 11, 06120 Halle (Saale), Germany

Agriculture, 2021, vol. 11, issue 1, 1-15

Abstract: A Sow-Welfare-Optimized-Feeding (SWOF) system with group-adapted ad libitum liquid feeding was developed to ensure that both optimal nutritional and behavioral needs are met in group-housed pregnant sows. This system comprises functional areas and allows sows to have either a low- or high-energy diet according to their current weight in relation to their parity. This field study aimed to investigate how this new system influences sows’ body weight, health status (lameness), aggression parameters (integument injuries, vulva injuries, and displacements at the trough), feed intake rhythm, and litter performance. In parallel, these parameters were also recorded in the existing system (group-housed sows restrictively fed a dry diet). In the SWOF system, the probability of displacements at the trough and occurrence of vulva injuries were reduced, whereas sows could follow a natural biphasic feed intake rhythm. Though lameness scores and litter performance were not affected, lower body weights and more integument injuries were, however, observed. Yet, results can only partially be attributed to the feeding system per se due to confounding effects such as management practices and group size differences (larger dynamic group vs. stable group). Hence, the SWOF system seems promising with regard to animal welfare but remains to be further validated.

Keywords: group housing; pigs; feed intake rhythm; ad libitum feeding; integument injuries; Sow-Welfare-Optimized-Feeding system (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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