Physiological feed evaluation for pigs in Organic farming
Description:
Samples of organically or conventionally grown cultivars of wheat, barley and faba beans were analysed for nutrient contents. Organically grown cereals contained less crude protein and more starch and fiber. Similar results were obtained for field beans, however, starch was reduced in organically grown beans. Metabolic trials were conducted with pigs of the old landrace breeds 'Schwäbisch Hällisch' (SH), 'Bunte Bentheimer' (BB) and modern crossbreed (CB), each supplied with a basal ration and a supplemental ration (+dried sugar beet pulp). The basal ration supplied 80% of the energy and 100% of the amino acid requirements for daily gains of 700g. The energy deficit was intended to be covered by the supplemental sugar beet pulp. At the end of the metabolic trial pigs were slaughtered, the cecal fermentation intensity was determined and samples of the mucosa of mid jejunum and colon were taken for measurements in digestive and transport physiology (Ussing-chamber-procedure). The supplemental fiber of soluble non starch polysaccharides was higly digestible and caused reduced digestibilities of all the other nutrients. N-excretion via urin was reduced and that via feces increased. CB retained more nitrogen than SH and BB. The cecal fermentation intensity was elevated in pigs fed the fibrous supplemental rations. The pig breeds differed in their potential for fiber digestion. SH digested the lowest amounts of fiber. Observed data on mucosal transport physiology indicate differences in preceacal digestive processes between the pig breeds. In conclusion and contrary to expectation, old landrace pig breeds can not be assumed to possess a higher potential for the more fibrous feed rations in organic farming.
Executive Institute:
Centre of Biodiversity and Sustainable Land Use (CBL) Details of Centre of Biodiversity and Sustainable Land Use
Parent institution:
University of Goettingen Details of University of Goettingen (Lower Saxony)
Contract period:
01. 06. 2002 - 31. 05. 2004
Project budget:
104,789 €
Participating Institutions:
- Institute of Animal Physiology and Animal Nutrition Details of Institute of Animal Physiology and Animal Nutrition
- Institute of Physiology Details of Institute of Physiology
- Department for Agrochemistry Details of Department for Agrochemistry
Funding Programme:
- BMELV - BÖLN - Federal Organic Farming Scheme and other forms of sustainable agriculture Details of BMELV - BÖLN - Federal Organic Farming Scheme and other forms of sustainable agriculture
Subject:
- Animal nutrition
- Organic Farming
Purpose of research:
Applied research
Funding Institutions:
- Federal Ministry of Food, Agriculture and Consumer Protection (BMELV) Details of (BMELV)
Project Management Agency:
- Federal Office for Agriculture and Food (BLE) Details of BLE