The nutrition value of soybeans grown in Latvia for pig feeding
Laen...
Kuupäev
2019
Kättesaadav alates
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
Soybean products are excellent sources of protein for pigs because their amino acid
profiles complement those of cereal grains. Soy protein is rich in the limiting amino acids lysine,
threonine, and tryptophan that are present in relatively low concentrations in the most commonly
fed cereal grains. Amino acids in soy protein are more digestible than amino acids in most other
plants proteins, which results in less nitrogen being excreted in the manure from pigs fed diets
containing soybean meal than if other protein sources are used. The phosphorus in soy products
is bound to phytic acid, which has a low digestibility to pigs, but the digestibility of phosphorus
in soy products may be increased to more than 60% if diets are supplemented with microbial
phytase. There are no much results about nutrition value of soybean growing in Latvia. Therefore
the aim of study was determined chemical composition of soybeans growing in Latvia and
evaluates their potential in pig feeding.
Research object were soybeans growing in Latvia. In the studied samples content of protein, fat,
ash, fibre, composition of amino acids were determined and metabolizable energy were
calculated. Evaluated that protein content varied from 32.7 till 40.7%, fat content was from
18.4–21.4% and significantly differed (p < 0.05) among growing places, but the sum of essential
amino acids in the soy beans determined 115–125 g kg-1
, and were not differed significantly by
varieties. The content of lysine in protein were determined 5.1–5.5 g 100 g
-1
. Concluded that soy
bean growing in Latvia provides equilibrium high metabolizable energy for pigs – from 13.2 to
17.6 MJ kg-1
and could be used in feed.
Kirjeldus
Article
Märksõnad
feed, amino acids, extruded soy bean, articles