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3942284
Protein and Energy Imbalances in Ruminants
Descrição
Understand and appreciate the practical aspects of on farm assesment understand the main factors affecting milk protein and fat levels. How to run and interpret a metabolic profile.
Sem etiquetas
cows
Mapa Mental por
Seth Kennard
, atualizado more than 1 year ago
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Criado por
Seth Kennard
aproximadamente 9 anos atrás
11
0
0
Resumo de Recurso
Protein and Energy Imbalances in Ruminants
Factors of productitivty
genetics
feed
fibre should be between 2-4 cm
total mixed ration is everything
asses if the cows really eat it all
silage is anaerobic
goes off when exposed
mould makes toxins
grass nutritional content changes throughout the year
fore cows go out onto grass always give buffer feed
reduce bloat
environment
at least 60cm trough space per cow
make sure its not too sharp
management
cows need to be lying down between 18 hours
good to work out their time budget
make sure they're not disturbed too much
cow comfort index, % lying down 1 hour before milking
good to split up dry cows into close (<14 days) and far off
disease
milk
milk fat should be around 4.2%
the higher the concentrate relative to fibre, the more the fat
spring grass low in fibre
low milk fat may show SARA
great variation within herd masks the indiviuals
milk protein should be around 3.4%
will drop with poor feed
hard to correct fast
on farm investigations
dung scoring
1
2
3
4
5
BCS is essential
take at different stages of cow
keep around 3
will drop in high lactation
push too high and increase fatty liver diease
metabolic profiles
split into 3 groups
10-20 days post calving
100 days in
dry cows within 14 days of calving
don't do post 20 days
at least 6 from each group
after big change wait 10 days
use average cows, not big issue ones
Anexos de mídia
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