Showing posts with label ruminal acidiosis. Show all posts
Showing posts with label ruminal acidiosis. Show all posts

Friday, December 18, 2015

HOW TO USE YEAST TO MAINTAIN RUMINAL HEALTH.

Wet weather can lead to low quality silage, in turn a potential cause of Sub Acute Ruminal Acidosis in dairy cows. Managing silage quality therefore is paramount. Good quality forage should always be the basis of any ration, and when quality and/or quantity of forage dry matter intake is reduced, then cows can struggle to perform.

Cows can also have a higher risk of Sub Acute Ruminal Acidosis (SARA), especially if the shortfall in forage energy intake is being met with higher levels of starchy cereals .

Studies have shown that SARA can be responsible for a loss in milk yield of up to 3 litres/cow/day. Paul Sloan, a nutritionist said "A ration done on a computer is no substitute for getting in among the cows."“It’s even more important to get the best out of the total ration and in particular producers need to make the best use of their silage.”

It is important to walk through the cows regularly and observe their behaviour at both feeding and resting times, as this can tell you a lot about how the ration is performing.

 Blends need to be correctly balanced with good levels of cereals to drive performance, and they should contain only quality raw materials with no filler type feeds.

Getting the right level of energy and starch is important, and maize meal is a key ingredient as it has lower starch degradability to help reduce acid loading in the rumen.

Good fiber sources such as soya hulls and sugar beet pulp should also be included to help balance the ration and maintain rumen health.

Sloan says, “Maintaining rumen health is the key and we have added live yeast to most of our rations this winter to help promote rumen function.

Live yeast improves fiber digestion and with the higher levels of fiber in this year’s silage the yeast is an important addition. The live yeast also helps reduce levels of lactic acid in the rumen, therefore helping to reduce the acid loading and maintain a healthier rumen environment.

 By taking this approach we have also seen significant reductions in laminitis-related feet problems.” Researchers Krause and Oetzel (2006) have shown that when frequent bouts of SARA occur, it can increase the risk of damage to the lining of the rumen wall.

 As pH drops, the normal balance of the rumen flora is disrupted and gram negative bacteria lyse, releasing endotoxins.


 As a result of the damaged rumen lining, bacteria and toxins from the rumen can then easily enter the blood stream which can lead to liver damage and an inflammatory response within the animal.

These toxins in the blood stream can also increase the risk of laminitis .Live yeast can help to reduce the risk of SARA occurring by helping to maintain the rumen pH at a higher level

.In addition to helping stabilize and raise rumen pH, live yeast will scavenge oxygen in the rumen, making the conditions more anaerobic, and certain nutrients are also produced by the yeast which helps to stimulate fiber digestion. story credit; all about feed.

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