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Actisaf Sc 47 - what is it and how does it work?

Actisaf Sc 47 - what is it and how does it work? Sc 47 - what is it... · What is Actisaf? is a live yeast of the species Saccharomyces cerevisiae. • Yeast are single cell organisms

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Page 1: Actisaf Sc 47 - what is it and how does it work? Sc 47 - what is it... · What is Actisaf? is a live yeast of the species Saccharomyces cerevisiae. • Yeast are single cell organisms

Actisaf Sc 47 - what is it and how does it work?

Page 2: Actisaf Sc 47 - what is it and how does it work? Sc 47 - what is it... · What is Actisaf? is a live yeast of the species Saccharomyces cerevisiae. • Yeast are single cell organisms

What is Actisaf?

is a live yeast of the species Saccharomyces cerevisiae.

•Yeast are single cell organisms which are classified as fungi.

•The most common use of live yeast is in the making of bread.

•Yeast ferments carbohydrates to produce carbon dioxide and it is this process that is so useful - by respiring oxygen, and producing carbon dioxide it causes the bread to rise.

Page 3: Actisaf Sc 47 - what is it and how does it work? Sc 47 - what is it... · What is Actisaf? is a live yeast of the species Saccharomyces cerevisiae. • Yeast are single cell organisms

• It is this same property of yeast - the consumption of oxygen - that makes it so useful when feeding ruminants such as dairy cows and beef animals.

•Actisaf is produced by Lesaffre, the world’s largest manufacturer of yeast. Around 40% of the world’s yeast is made by Lesaffre!

is produced by a fermentation process in the production plant in Lille.

Page 4: Actisaf Sc 47 - what is it and how does it work? Sc 47 - what is it... · What is Actisaf? is a live yeast of the species Saccharomyces cerevisiae. • Yeast are single cell organisms

An Actisaf yeast prill is a bit like

a Malteser - the unique drying

process results in a layer of dead cells

around the edge of the prill (like

the chocolate on the Malteser!) that

protect the live yeast cells within. This

ensures that it is stable.

Page 5: Actisaf Sc 47 - what is it and how does it work? Sc 47 - what is it... · What is Actisaf? is a live yeast of the species Saccharomyces cerevisiae. • Yeast are single cell organisms

•A ruminant is an animal with four compartments to its stomach - the rumen, reticulum, omasum and abomasum.

•The ruminant digests plant-based food by breaking it down through microbial and mechanical action in the first stomach compartment, the rumen and the second compartment, the reticulum, before regurgitating the semi-digested food (the cud) and chewing it again.

•The process of chewing the cud to further break down plant matter and mix it with saliva is called ‘ruminating’. Food then passes on through the omasum and into the abomasum (or true stomach) and onwards to the intestines.

What are ruminants?

Page 6: Actisaf Sc 47 - what is it and how does it work? Sc 47 - what is it... · What is Actisaf? is a live yeast of the species Saccharomyces cerevisiae. • Yeast are single cell organisms

The ruminant animal has four stomach

compartments - the rumen,

reticulum, omasum and abomasum.

Anaerobic microbes in the rumen break

down the feed ingested

Page 7: Actisaf Sc 47 - what is it and how does it work? Sc 47 - what is it... · What is Actisaf? is a live yeast of the species Saccharomyces cerevisiae. • Yeast are single cell organisms

•The rumen is a large fermentation chamber full of bacteria and has a capacity of around 120 litres - about the size of a wheelie bin! Around 16% of the rumen is oxygen

• It is estimated to contain tens of billions of bacteria, protozoa and fungi and it is these rumen organisms that digest cellulose (plant fibre) found in forages such as grass or straw, releasing the nutrients to the animal for absorption later on in the digestive tract.

•Rumen bacteria involved in the digestion of fibre require anaerobic (low oxygen) conditions in order to function effectively.

•Therefore, the less oxygen there is in the rumen, the more these bacteria will multiply and grow - increasing the rumen’s capacity to digest fibre

Page 8: Actisaf Sc 47 - what is it and how does it work? Sc 47 - what is it... · What is Actisaf? is a live yeast of the species Saccharomyces cerevisiae. • Yeast are single cell organisms

•The rumen is continually challenged by oxygen

•Oxygen, while it is there, is toxic to the bacteria in the rumen

•Act i is a live yeast that uses up oxygen, enhancing the rumen environment.

•Actisaf also stabilises the pH of the rumen

•Actisaf stimulates:

How does Actisaf work?

- lactate utilising bacteria resulting in increased rumen pH

- fibrolytic bacteria resulting in increased fibre digestion

•This limits the growth of lactate producing bacteria

•Actisaf also converts lactate to proprionate, increasing milk yield and lean meat production

Page 9: Actisaf Sc 47 - what is it and how does it work? Sc 47 - what is it... · What is Actisaf? is a live yeast of the species Saccharomyces cerevisiae. • Yeast are single cell organisms

Actisaf Sc 47 scavenges oxygen from the rumen, encouraging the growth of anaerobic bacteria and discouraging the growth of lactic acid-producing bacteria, thereby stabilising rumen pH Not to scale

AA Amino AcidVFA Volatile Fatty AcidBCP Bypass Crude Protein

Page 10: Actisaf Sc 47 - what is it and how does it work? Sc 47 - what is it... · What is Actisaf? is a live yeast of the species Saccharomyces cerevisiae. • Yeast are single cell organisms

• Ideally the rumen pH needs to be kept to the optimal range of 6.5 to 7.0.

•This pH range is where the fibre-degrading bacteria thrive, releasing volatile fatty acids used by the animal for maintenance and production.

•But rumen function is acidogenic and some diet conditions can cause pH to fall outside this range - which can result in clinical acidosis or subacute rumen acidosis (SARA) occurring

•Acidosis has a significant effect on health and production.

•At a pH of 6.4 the rumen bacteria digest about 55% of the fibre where as at a pH of 5.6 this falls to around 35%

Acidosis...

Page 11: Actisaf Sc 47 - what is it and how does it work? Sc 47 - what is it... · What is Actisaf? is a live yeast of the species Saccharomyces cerevisiae. • Yeast are single cell organisms

Acidosis...

5.2

5.4

5.6

5.8

6.0

6.2

6.4

6.6

6.8

Control

Actisaf 0.5g

Actisaf 5g

+8h+7h+6h+5h+4h+3h+2h+1h0h-1h

Changes in rumen pH after feeding

Feeding

pH

Time

•Rumen pH drops after feeding. Actisaf Sc 47 stabilises rumen pH, thereby avoiding the negative impact of low pH on the rumen microbes and associated negative health consequences.

Page 12: Actisaf Sc 47 - what is it and how does it work? Sc 47 - what is it... · What is Actisaf? is a live yeast of the species Saccharomyces cerevisiae. • Yeast are single cell organisms

stabilises rumen pH and prevents the development of a condition known as SARA.

•SARA has a significant impact on health, production and live weight gain:

Reduce rumen motility

Reduced DMI

NEB(Negative Energy

Balance)

SARA negatively affects...Production

•Drop in milk yield (2-3l)

•Reduced butterfat %

•Reduced live weight gain

Health

•Ketosis

•Displaced abomasum

•Mastitis

•Laminitis

Page 13: Actisaf Sc 47 - what is it and how does it work? Sc 47 - what is it... · What is Actisaf? is a live yeast of the species Saccharomyces cerevisiae. • Yeast are single cell organisms

What are the benefits of including Actisaf in your feed?

is heat stable under normal compounding conditions and can be incorporated into compound feed in the mill, or can be added on farm as part of a total mixed ration (TMR). By helping stabilise rumen pH and encouraging the growth of fibre digesting bacteria, independent trials have shown that can:

Feeding Actisaf to dairy cows can:

• Increase milk yield by up to 3 litres/day• Increase Dry Matter Intakes• Improve milk solids•Reduce the risk of acidosis and cud balls•Reduce lameness• Improve fertility

Page 14: Actisaf Sc 47 - what is it and how does it work? Sc 47 - what is it... · What is Actisaf? is a live yeast of the species Saccharomyces cerevisiae. • Yeast are single cell organisms

• Improve growth rates by up to 9 per cent• Increase Dry Matter Intakes• Improve Feed Conversion Rate• Improve carcass classification•Reduce the risk of acidosis and cud ball•Reduce lameness

Feeding Actisaf to beef animals can:

Feeding Actisaf to ewes can:• Increase milk yield by up to 20 per cent•Earlier and higher milk yield peaks, sustained

for longer• Increase Dry Matter Intakes•Reduce the risk of acidosis and cud balls

Page 15: Actisaf Sc 47 - what is it and how does it work? Sc 47 - what is it... · What is Actisaf? is a live yeast of the species Saccharomyces cerevisiae. • Yeast are single cell organisms
Page 16: Actisaf Sc 47 - what is it and how does it work? Sc 47 - what is it... · What is Actisaf? is a live yeast of the species Saccharomyces cerevisiae. • Yeast are single cell organisms

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