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Subacute Rumenal Acidosis (view source)
Revision as of 07:09, 27 August 2010
, 07:09, 27 August 2010→Risk Factors
===Risk Factors===
===Risk Factors===
Insufficient long fibre in the diet
Long fibre is essential both for rumen mat formation and
'''Insufficient long fibre in the diet''': Long fibre is essential both for rumen mat formation and
to stimulate cudding. It is usually defined as fibre longer
to stimulate cudding. It is usually defined as fibre longer
than 2-5 cm. However, if it is longer than 10 cm, it is
than 2-5 cm. However, if it is longer than 10 cm, it is
long fibre may be required (eg, 1 to 2 kg of
long fibre may be required (eg, 1 to 2 kg of
chopped hay or straw per cow).
chopped hay or straw per cow).
Inaccurate fodder dry matter estimation
If the dry matter content of fodder is overestimated, insufficient
'''Inaccurate fodder dry matter estimation''': If the dry matter content of fodder is overestimated, insufficient
fodder may be provided, thereby leading to SARA.
fodder may be provided, thereby leading to SARA.
Excessive mixing of a TMR diet
Excessive mixing of a TMR diet
observed, probably as a result of small intestinal carbohydrate
observed, probably as a result of small intestinal carbohydrate
digestion.
digestion.
Poor dry cow management
'''Poor dry cow management''':
As mentioned earlier, feeding a suitable transition diet is
As mentioned earlier, feeding a suitable transition diet is
essential for rumen papillar development and the acquisition
essential for rumen papillar development and the acquisition
of a suitable rumen microflora capable of dealing
of a suitable rumen microflora capable of dealing
with the lactation diet.
with the lactation diet.
Feeding post-calving
'''Feeding post-calving''':
While most farmers appreciate the need for a pre-calving
While most farmers appreciate the need for a pre-calving
transition diet, they frequently fail to appreciate the fact
transition diet, they frequently fail to appreciate the fact
maximise dry matter intake rather than keep up with the
maximise dry matter intake rather than keep up with the
daily energy requirements of the cow.
daily energy requirements of the cow.
Sorting of long fibre
'''Sorting of long fibre''':
If the fibre in a TMR is longer than 10 cm, cows are likely
If the fibre in a TMR is longer than 10 cm, cows are likely
to sort the food and only consume small particles and
to sort the food and only consume small particles and
suLICh miachineiv inI this 1manIler is not xxithout risk to the
suLICh miachineiv inI this 1manIler is not xxithout risk to the
oper-atoi- a1njid appr-oprialtc safectV guLardl-CIs illust be eni1ployed.
oper-atoi- a1njid appr-oprialtc safectV guLardl-CIs illust be eni1ployed.
Slug feeding of concentrates in the
milking parlour
'''Slug feeding of concentrates in the milking parlour''':
It' giealtei- th.an 3 to 4 kg-, of co-ceniiti ates arc fed at a timlie.
It' giealtei- th.an 3 to 4 kg-, of co-ceniiti ates arc fed at a timlie.
I-Lillmen IpH is likelx to tall anid i-emiiain loxW fol- mnLIchI of
I-Lillmen IpH is likelx to tall anid i-emiiain loxW fol- mnLIchI of
pr-actice of hxhl-id TMR feedii-Ig to bc a miajoi factoIr iII
pr-actice of hxhl-id TMR feedii-Ig to bc a miajoi factoIr iII
thIe dex elopmenlet o(fSARA.
thIe dex elopmenlet o(fSARA.
Food deprivation and irregular feeding
'''Food deprivation and irregular feeding''':
InI oidel- to naiilalisc dr- illattei intake, a TMR should be
InI oidel- to naiilalisc dr- illattei intake, a TMR should be
axllablc at all times. It is gen1erall recomimiiciided that
axllablc at all times. It is gen1erall recomimiiciided that
dax!' food cain casily bhc psiledC uIP to tile barrier as tai-ll
dax!' food cain casily bhc psiledC uIP to tile barrier as tai-ll
staff arec ceilerallN, illiattendalnlce.
staff arec ceilerallN, illiattendalnlce.
Poor cow comfort
'''Poor cow comfort''':
Pooi covx coilltort xxi -Csuilt in lcss tinle beint spceit
Pooi covx coilltort xxi -Csuilt in lcss tinle beint spceit
1uillila.1til-L xxith ani associated r-eduLctioll in saliaa produLIctionI
1uillila.1til-L xxith ani associated r-eduLctioll in saliaa produLIctionI