Water Soluble Vitamins and Vitamin Like Substances Flashcards
Usually abundant in feeds.
Water Soluble Vitamins
WSV Exist in nature in
Active form
Usually readily ——–. Absorption not influenced by —.
absorbed; fat
H—-, p—–, and s—— can destroy these vitamins.
Heat, pressure, and steam
can destroy these Water Soluble vitamins.
Heat, pressure and steam
will limit access of animals to these
vitamins.
Confinement system (housing)
usually are able to synthesize all B vitamins.
Rumen bacteria
Microorganism in the —– — ———are capable of synthesizing these vitamins but the amount is usually not enough to
meet their needs.
Ceca of Monogastric
are seldom added to ruminants’ diet unless they have
been severely “off-fed” which results in massive death of rumen
microorganisms.
B vitamins
Storage in the body is —— (except —) such that continuous
supply of the vitamins is needed.
minimal; B12
Excesses are excreted via —– in WSV
urine
Hypervitaminosis is —- in WSV.
Rare
Water soluble vitamins are involved in ————— which function in the direct metabolism of fats, proteins and carbohydrates and ————— throughout the body, transmission of nerve impulses and RBC formation.
enzyme systems; transfer of energy
Considered to be the oldest vitamin.
Vitamin B1 (thiamine)
Deficiency of this causes ———- in man which is earliest documented
deficiency disorder.
Vitamin B1 (thiamine); beri-beri
• Functions: An essential coenzymes in energy metabolism especially in
the TCA for energy production; has important mechanism of action in
the nervous tissue
Vitamin B1 (thiamine)
• Deficiency symptoms: polyneuritis (head retraction in chicken); cardiovascular disturbances; anorexia (lack of desire to eat) and
emaciation (insufficient energy utilization); polioencephalomalacia in
ruminants
Vit. B1 (thiamine)
Sources of Vit. B1 (thiamine): ——————-, oilseed meals, dairy products and brewer’s yeast.
cereals and middlings
Relatively Non-Toxic Hypervitaminosis:
Vit. B1, B5, B7 or H, B9, B12, and C
Antagonists of Vit. B1 (thiamine):
• ———– (rumen microbes; fresh fish)
• ———– (coccidiostat)
Thiaminases; Amprolium
• Functions: coenzyme, FMN (Flavin Mononucleotide) and FAD (Flavin
Dinucleotide); dehydrogenase (hydrogen acceptance) –
Vit. B2 (Riboflavin)
Functions: constituent of NAD (Nicotinamide Adenine Dinucleotide) and NADP (Nicotinamide Adenine Dinucleotide Phosphate) which act as hydrogen-transferring co-enzymes and participate in vital metabolic reactions (carbohydrates, fats and amino acids);
Vit. B3 (Niacin)
Functions: constituent of co-enzyme A in synthesis and degradation
processes in the metabolism of proteins, carbohydrates and fats.
Vit. B5 (Pantothenic Acid)
Functions: coenzyme, pyridoxal phosphate; amino acid decarboxylation, transamination and removal of sulfhydryl groups; participates in carbohydrate metabolism by participating in phosphorylation
Vit. B6 (Pyridoxine)
Functions: prosthetic group of carboxylase enzymes in fatty acid
synthesis, gluconeogenesis, propionic acid metabolism, and
Vit. B7 or H (Biotin)
Functions: transfer of specific C1 units (methyl and formyl groups), which
are
Vit. B9 (Folic Acid/Folates)
biologically active form is tetrahydrofolic acid
Vit. B9 (Folic acid/Folates)
Functions: production of phospholipids (e.g. lecithin) and lipoproteins; transport metabolism of fats; production of electrical signals in nerve cells (constituent of acetylcholine); constituent of most cell types (phospholipid); methyl donor in metabolism.
Choline