 |
|
|
Translate this page in your preferred language:
|
| Urea treatment of straws : |
| Back |
Urea treatment of straw
- Most successful procedures to improve digestibility of crude plant material is through treatment with ammonia.
- This weakens the hard cell walls, allowing better penetration by rumen microorganisms to produce more effective fermentation and liberation of nutrients.
- The treatment of fibrous plant materials and even shredded newspapers with steam, alkali, aldehydes or anhydrous ammonia is possible under factory conditions in the industrialized countries.
- Although this would increase the amount of fodder or fodder substitute available for livestock, it is unlikely to become practical so long as there are ample supplies of quality forage and cereal grains.
- The situation is quite different in the tropics where residues and by-products abound but better quality feeds are expensive or unavailable.
- One of the more successful procedures available now to improve the digestibility of straw is urea treatment. Since this requires little in the way of specialized equipment or expense, urea treatment can be applied by even subsistence farmers.
- After chopping, the straw is moistened with a urea solution (2.5 to 5%) and usually covered for several weeks. Ammonia, released from the urea, weakens the lignified outer wall and increases the digestibility of the straw. Once treated and if properly covered to preserve anaerobic conditions, the urea-ensiled material can be stored for several months
|
Effect
of treating with urea (5%) on the chemical
composition and the digestibility in sacco for wheat
straw (n=16)
(BA, 1993) Composition (as % of the dry
matter)
|
|
Straw
|
Dry Matter
|
Mineral content
|
Crude Protein
|
Neutral Detergent Fiber (N D F)
|
Acid Detergent Fiber (A D F)
|
Acid Detergent Lignin (A D L)
|
Digestibility (%)
|
|
Non treated
|
90
|
9
|
3
|
76
|
47
|
4
|
46
|
|
Treated
|
64
|
7
|
14
|
75
|
49
|
5
|
59
|
Schematic representation of the respective proportions of the treating nitrogen (%)
which are lost or fixed and usable by the rumen microorganisms.
Urea treatment of the
straw A women getting training for urea treatment of wheat straw
Urea treatment by a villager Change in the colour of rice straw after urea treatment
|
|
| Back |
|
|
Developed by :
|
Jaspal Singh
(Ex. M.V.Sc Scholar ) |
Dr. Pranav Kumar
(Assistant Professor)
|
Amandeep Singh
(Final Year B.V.Sc & AH student) |
|
|
|
|
|
|
Scroll
|
Division of Veterinary and Animal Husbandry Extension Education
Faculty of Veterinary Sciences and Animal Husbandry, R.S. Pura, SKUAST Jammu |
|