During the initial stages of lactation, the amount of energy required for maintenance of body tissues and milk production often exceeds the amount of energy available in the diet. As a result, body fat reserves are mobilised to satisfy the increased energy requirement. Prilled saturated fatty acids and calcium salts of long-chain fatty acids are effective as rumen-inert fat supplements for lactating cows. Rumen-inert fats, such as calcium salts of long-chain fatty acids or other forms of rumen-bypass fat, are often fed to increase the dietary energy supply. Responses to this supplementation vary. For example, feeding bypass fat to dairy cattle has been reported to increase fat-corrected milk yield, milk and fat-corrected milk yield and milk-fat percentage without affecting the digestibility of other dietary nutrients.
Raw edible oils, if given beyond a certain proportion as a source of fat, may adversely affect fibre digestion and bind divalent mineral ions. Therefore, it is necessary to supplement fats in a form which can provide energy without affecting fibre digestion in the rumen.
Feeding Bypass fat gets digested in the abomasum at acidic pH, without interfering with the fermentative digestion in the rumen. Fat supplements in this form are termed as bypass fat, which can help in improving milk production, body condition score, and reproduction efficiency. Bypass fat is the most energy-dense nutrient available that does not affect fibre digestibility, feed intake or the absorption of magnesium and calcium. Rumen-inert fat (calcium salt of fatty acid) is partially resistant to bio-hydrogenation by rumen microbes and reduces the risk of metabolic acidosis.
Characteristics of Bypass Fat
Benefits of Bypass Fat for Dairy Cattle
FAQ on Bypass Fat
What is bypass fat?
What are synonyms of bypass fat?
Why to supplement bypass fat to dairy animals?
Why oil can not be included instead of bypass fat to get more energy?
What are advanatges of supplementaion of bypass fat to dairy animals?
Is effect of supplementation of bypass fat similar in all types of dairy animals?
How much bypass fat to be supplemented?
How bypass fat is supplemented?
How does bypass fat works ?
Bypass fat contains an unsaturated fat related with calcium particles, rather than a glycerol backbone. The association with calcium salt and fatty acid means the fat supplement has low solubility, is less susceptible to bio-hydrogenation and remains inert in the rumen. However, in the acidic pH of the abomasum, it dissociates and the fatty acid and calcium are set free for absorption. The fatty acids are more digestible in the duodenum due to high acidity, bile acids, lysolecithin, and fatty acids.
Why is it essential to supplement choline with bypass fat?
What is the effect of bypass fat on reproduction?
Bypass fat at NDDB
|Name of Fatty Acid||Content|
Specification of Bypass Fat
Light brown to pale yellow
Free flowing granules