Publikationsdatenbank

Cortisol levels in saliva and colostrum in gestating and lactating sows fed different fibre sources (2020)

Art

Vortrag

Autoren

Saliu, E. M. (WE 4)

Wessels, A. G. (WE 4)

Martínez-Vallespín, B. (WE 4)

Männer, K. (WE 4)

Vahjen, W. (WE 4)

Zentek, J. (WE 4)

Grześkowiak, L. (WE 4)

Kongress

24th ESVCN Congress

München, 17. – 19.09.2020

Quelle

Congress Proceedings : 24th Congress of the European College of Veterinary and Comparative Nutrition : September 17 - 19, 2020 — Ludwig-Maximilians-Universität München (Hrsg.)

München, 2020 — S. 51

ISBN: 978-90-90-33625-1

Sprache

Englisch

Verweise

URL (Volltext): https://www.zora.uzh.ch/id/eprint/190612/1/Congress_proceedings_2020_ffv_(4).pdf

Kontakt

Institut für Tierernährung

Königin-Luise-Str. 49
14195 Berlin
+49 30 838 52256
tierernaehrung@vetmed.fu-berlin.de

Abstract / Zusammenfassung

Introduction:
Parturition commonly involves stress for sows, which may be displayed as increased stereotypical behaviour and excretion of cortisol. A correlation between stereotypical behaviour, salivary and faecal cortisol levels was reported with a reductive impact of dietary fibre contents [1]. The aim of this study was to investigate the impact of two different fibre sources on salivary and colostrum cortisol levels and performance in sows during farrowing period.

Animals, materials and methods:
Twenty sows (6 pluriparous, 14 gilts) were randomly allocated to two different trial groups receiving gestation (11,4 MJ ME/kg DM) and lactation (13 MJ ME/kg DM) diets containing either 15 % sugar beet pulp and 3 % lignocellulose (T1) or 3 % sugar beet pulp and 15 % lignocellulose (T2). The diets were based on barley, wheat and soybean meal. In the gestation period, the animals were kept in groups and housed individually one week ante partum until weaning at day 28. The sows were fed restrictively during gestation with, 3,5 kg feed for gilts and 4 kg for pluriparous sows the week prior to parturition, while ad libitum feeding was provided during lactation. Feed intake was recorded daily for the individual sows. The sows’ body weight was measured 7 days ante partum and at weaning while the piglets were weighted at birth and at 2, 7, 14, 21 and 28 days of age. At parturition, colostrum samples were obtained from the sows. Saliva was collected prior to rehousing, directly and 24 h after parturition and 7 and 28 days post-partum. Saliva samples were collected using Salivette Cortisol (Sarstedt AG & Co. KG, Germany) and a metal clamp. Cortisol was measured in the saliva and colostrum using a commercial Cortisol ELISA Kit (IBL International GmbH, Germany). Statistical analyses were performed with the software IBM SPSS (Version 22, USA) and statistical differences (p<0.05) and subgroups were determined using the non-parametric KruskalWallis test and Mann-Whitney U test for cortisol and t-test and Mann-Whitney U test when evaluating performance data. The animal trial was approved by the Regional Office for Health and Social Affairs (LaGeSo Reg. G0112/19).

Results and discussion:
There were no significant differences between treatments regarding litter size at birth (11.4 ± 4.0 and 11.3 ± 3.5), average piglet weight at birth (1.52 kg ± 0.27 and 1.62 kg ± 0.39) or at weaning (7.2 kg ± 1.6 and 7.6 kg ± 1.2), and average piglet weight gain (5.7 kg ± 1.5 and 6.0 kg ± 1.2). Additionally, no significant differences were observed in the sows’ body weight at farrowing (217 kg ± 34 and 195 kg ± 42) and weaning (209 kg ± 23 and 198 kg ± 39) or health related issues for T1 and T2, respectively. Salivary cortisol levels increased around farrowing for both treatments followed by a continuous reduction until weaning, indicating that parturition is a stressful period for sows. Cortisol levels in colostrum (T1: 230.5 ng/mL ± 167.5;
T2: 305.3 ng/mL ± 238.7) significantly exceeded simultaneously obtained salivary cortisol levels (T1: 97.9 ng/mL ± 56.7; T2: 111.4 ng/mL ± 82.9), with the highest cortisol concentrations observed in T2 vs. T1 groups.
Conclusion. Colostrum but not salivary cortisol levels differed significantly between sows fed the different fibre sources. This could have an influence on the suckling piglets’ behaviour and health. However, this needs to be further investigated.