Publication Database

Effects of dietary rye and rapeseed on performance, apparent CP digestibility and digesta characteristics in weaned piglets (2020)

Art

Vortrag

Autoren

Ellner, C. (WE 4)

Zentek, J. (WE 4)

Röhe, I. (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. 105

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:
The use of rye (RY) and rapeseed meal (RM) as feed ingredients in pig nutrition might have advantages over wheat (WH) and soybean meal (SM) based diets. RY is highly capable of coping with periods of drought [1] and has a unique fibre composition (high concentration of arabinoxylans) [2]. The use of RM as a protein source might reduce the import of soybean. Studies showed that the feeding of increasing levels of RY instead of WH had no negative impact on performance parameters of fattening pigs [3]. However, the feeding of RY might result in a high viscosity of digesta (V) and a reduced digestibility of crude protein (CP) in fattening pigs [4]. This study investigated the effect of feeding RY or WH combined with either RM or SM on performance, CP digestibility and digesta characteristics in weaned piglets.

Animals, material and methods:
In total, 88 weaned piglets aged 28 days were allocated to 44 pens and fed four different experimental diets being isonitrogenous (n=11). Experimental diets were based on either WH/SM, WH/RM, RY/SM or RY/RM. Dietary inclusion levels were 48% for RY and WH, 30% for RM and 25% for SM respectively. During the feeding trial, body weight (BW) and feed intake were recorded weekly. Average daily gain (ADG), average daily feed intake (ADFI) and feed conversion ratio (FCR) were calculated. After five weeks of feeding, one piglet per pen was euthanised. Digesta samples of jejunum and colon were taken and analysed for V and dry matter content (DM). Apparent ileal digestibility (AID) of CP was determined. Statistics were carried out using a 2-factorial ANOVA regarding the factors protein (P) and carbohydrate source (CHO) (p<0.05).

Results and discussion:
The performance was influenced only by P, not by CHO. ADG and ADFI were higher for SM fed piglets compared to those fed RM between day 28-33 (p<0.05) and for the whole trial (day 0-33, p<0.05). ADFI was also lower for RM groups for day 0-7 and day 14 -21 (p<0.05). BW and FCR did not show any differences regarding the used P or CHO. Unexpectedly, the feeding of RY instead of WH resulted in a lower DM of digesta in jejunum and colon (p<0.05). V in the jejunum was higher for pigs fed RY (p<0.05). Precaecal AID of CP was influenced by P and CHO. It was higher in groups fed diets containing SM or WH (p<0.01). Thus, higher values of digesta V in RY fed piglets might lead to a lower AID of CP for both SM and RM.

Conclusion:
The results of this study showed that the use of RY instead of WH had no negative impact on animal performance. Interestingly, CP digestibility was reduced in RY fed piglets, which might be related to changes in intestinal viscosity. SM as a protein source seemed to be superior to RM, resulting in better growth rates and digestibilities. Further investigations regarding effects on digestive function and gut health are needed in order to evaluate the pros and cons of rye and rapeseed as feed components in piglet nutrition.