NB of Pulse Crops and Oil Plants in Animal Nutrition Flashcards
Pulse crops family
Fabaceae
What are pulse crops?
1) Annual legumes
2) Used for their fleshy seeds
3) Used as forage meals - large seeds - nutrients in cotyledons
4) As human food and animal forage
Examples of Pulse Crops
Soya Bean
Field Bean
Pea
Protein Content
20-40%
Carbs
Poor in Carbs
Vitamins
B1,2,3
Anti nutritive compounds in family Fabaceae
1) Protease (trypsin, chymotrypsin) inhibitors
2) Amylase inhibitor - reduces carb digestion
3) Oligosaccharide - non digestable compounds causing colic
4) Phytoestrogen (isoflavonoids, coumestans) hormonal effects
5) Saponins - change of membrane permeability; reduced growth; agglutination of hemoglobin; cholic
6) Cyanogenic glycosides -inhibition of cellular respiration
7) Quinolisidine alkaloids - reduced growth, damages liver
Elimination of anti nutritives
1) heat treatments - cooking, steaming or roasting, extruder machines (applying heat and high pressure)
2) plant breeding (selection of cultivars)
3) fermentation (for saponins) – ensilage
Seeds Use
1) Human Consumption
2) Livestock forage
Green Parts Use
1) Straw
2) Fresh Forage
3) Silage
Nutritive Value of Soybean
1) High Protein
2) High Oil
3) Starch
4) Vitamins A, E, K
Antinutritives in Soybean
1) Protease Inhibitors
2) Lectins - phytohaemagglutinins
3) Anti-vitamins (inhibition of vitamine A, B12, D, E)
4) Goitrogens (suppression of thyroid hormones)
5) Phytoestrogens
6) Allergenes - glycinin
7) Phytic acids (phytates)
Effects of soy foods on human health
A higher intake of soy foods and soy isoflavones is associated with lower sperm concentrations