Fly Pressure at its Highest
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February 2020
Ewes News
Fly Pressure at its Highest
Dipping contractors and farmers have been aware that only for use in jetting races. The ivermectin is potent against
effective measures need to be taken to protect against fly maggots and lice and will also persist. It is stickier than Cyrex,
strike NOW. so will last longer after rain.
Chemical choice is part of that. Plenty of chemical put in the Spray-on options
right place is the other. Local treatment with spray-on options can offer significant
Cyrex combination dip is our top seller at this time of year advantages.
because of the persistence of the cyromazine and the knock They are convenient to use, and put chemicals on in high
down effect of the spinosad. It is versatile for use in jetters, concentration where they are needed.
showers or plunge dips and even through watering cans for Click Extra is the longest acting of these, and stock treated
small lots. It can be used for spot treatment of strike also. in November may need some additional treatment by March.
Cyrazin KO is an alternative to Cyrex. It is a combination of Clikzin and Vetrazin Spray-on are shorter acting products
cyromazine and ivermectin. It is licensed for crossbreds and very useful for re-treating keep lambs.
Dipping Contractor Observations
James Gibson has recently taken over Dave Ludemann expects the fly pressure
Barry Taylor’s sheep dipping operation. to increase should the heat come on
He says most of his clients apply after the good rain over the last week
preventative treatments in spring and
or so. Dave said he has seen a few cases
he does not know of any who have come
of actual strike since Christmas. He also
unstuck.
advised, in his experience when applying
James applies Cyrex most often
chemical that saturation was required to
through his saturation shower. He says
the saturation shower does use more get anywhere near the specified length of
chemical but handles the variations protection on the label of most chemicals.
in stock much better whether it be The other issue farmers need to be aware
long wool, short wool, environmental of is some of the older chemicals failing in
conditions, the strength of the fly James Gibson - getting the the face of fly resistance. Most have moved
challenge or whether sheep have job done. onto later technology products which were
existing strike or lice issues on top of fly. working well when applied correctly.
Jeremy Hore has taken over from Sam
Pringle, Maniototo Sheep Handling in
Ranfurly. He said preventative treatments
had been largely effective following a
period of modest fly pressure prior to
Christmas however some fly was starting
to show. Like other dipping contactors
spoken to, Jeremy is also wary of a
Maniototo Sheep Handling -
sudden increase in strike should warm
C/o Jeremy Hore
weather follow the recent rain.
Sheep Production & Productivity
Dave Robertson BVSc, BSc
FEBRUARY Minerals
ANIMAL Cobalt can be a limiting mineral to lamb growth in the Autumn.
Short acting B12 for trading lambs is fine, but consider a longer acting option
HEALTH for replacement ewe lambs or fine wool lambs to be wintered. With Junior
SeCo capsules out until April, Smart Shot is the remaining long acting B12
PLANNING option.
Iodine is sometimes debated as to when and how much is required. Here’s a
CHECKLIST collection of facts that I use to make my decision about iodine requirements.
Parts of Otago and Canterbury have produced goitres in stock, that is,
Ewes: full blown Iodine deficiency.
Pre-tup drench plus Native pastures are much lower in iodine than improved pasture mixes
Selenium. If you are not Brassica feeding over the winter deprives pregnant ewes of iodine at a
into drenching ewes pre- critical stage of foetal development. Some modern clovers prevent iodine
tup then consider using absorption in the animal.
a 1mL dose of long acting Wetter years when there is more leaching of minerals, and/or less dirt
selenium (Selovin LA) to all consumption iodine intake is reduced.
breeding stock. Foetuses with sub-clinical iodine deficiency have lower birth weights and
Toxo and Campy 1st vax poorer lamb survival (in merinos and crossbreds). The ‘100 Club’ research
from fine wool flocks in the 1990’s demonstrated lambs could be saved
2nd Campy and Flexidine 1 through iodine supplementation.
month later. One North Island trial with long acting iodine in Romney ewes yielded
Weigh hoggets and 2 tooths. 14% more lambs surviving in the treated group compared with controls,
Set some pre-tup weight other recent North Island trials have not shown a difference.
gain targets. Flexidine pre-tup is the easiest and most comprehensive option for
supplementing Iodine for prolonged activity. 1.5mL into the muscle.
BCS ewes and build up light
Selenium
ewes.
South Island soils are deficient in Selenium. Whether it’s a long or short
Lambs acting form, breeding stock (ewes and cows) need selenium on board at
Drench 28 day intervals mating. A dose pre-tup (sheep) or in the winter (cattle) is standard practice.
Monitoring actual animals levels with blood tests at critical times helps
B12 and clostridial vaccine make decisions around supplementation.
booster
Rams
Vet check for soundness and
sort out feet. Ensure gaining
condition for mating.
Cows
Book pregnancy testing 6 to
8 weeks post bull removal
Calves
Weaning Oral Matrix Hi Min
mini dose
1st Covexin 10 (for clostridial
diseases)
Sheep Production & Productivity
Dave Robertson BVSc, BSc
Drenching to the Conditions
For adult stock refugia is very important in dry conditions. If you are pre-tup
drenching ewes, plan and mark at least 5-10% undrenched. Alternatively you
may only drench ewes under target BCS.
Worm control for lambs can be stretched out if conditions are dry. If this is done,
check your assumption that the worm burden is low with an egg count. Do this
4-5 weeks after your weaning drench so you don’t get caught out with scoury, ill
thrifty lambs 6 weeks after a drench. On irrigated/green pasture it is best to stick
to a 28 day drench interval.
We have been doing a lot more drench checking this summer. We recommend
that you do a 10 day worm egg check at least once per season on your regular
lamb drench.
Now that it has rained there is a risk
that parasite eggs will hatch in a
synchronised way (all at once) that can
cause issues for hoggets and 2 tooths if
left unchecked.
Now is the time to plan your AI
George Smith and Finja Schmidt have
breeding programmes for sheep.
been our drench reduction test (FECRT)
It is exciting times for sheep
champions this year. They are collecting
breeders and people are investing in
very valuable data to help farmers
improving their stud stock. We can
move forward with their worm control
source new genetics from around
programs.
the country or link your flock in to a
Dry periods are good for reducing worm progeny testing programme.
burdens and drying up feet for fine
wool farmers. If you have had footrot
in your flock through spring then NOW
is the time to REDUCE THE POOL ON
INFECTED ANIMALS. Dry periods are Veterinary Centre – By the Big Blue Cross
when you will get greatest cure rates
from treatments and give your clean
George Smith busy with FECRT mob the best chance of going into the
work this summer Autumn sound.
Extender
SPECIAL OFFER Junior Seco
Capsules -
Free drench check with
every 20 litre oral sheep Out of Stock
drench purchased
Until April 2020
February only
We have just been advised Extender Junior Seco Capsules
10 lambs are out of stock until April 2020. The Extender Junior Seco
tested 7-10 capsule is used in sheep up to 40kg. There were similar
days post supply issues last year and farmers chose between waiting
drenching until supply resumed in April or using different products to
get an equivalent result e.g. long acting drench injection
Free interpretation and Smartshot. We will be in touch in the coming days to
discuss options with regular users. If you were thinking
of results by your vet
about long acting treatments for hoggets this Autumn then
and electronic report get in touch to discuss your options with one of our vets.
Yersiniosis in Deer Luke Smyth BVSc
Yersiniosis is the leading cause of death in fawns during The disease is primarily related to age, stress and exposure
autumn and winter. to Yersinia bacteria.
Yersiniosis is a particularly vile and highly infectious Stressors include
bacterial disease. First signs in deer fawns are green, Weaning, poor nutrition, sudden change in feed,
watery, smelly diarrhoea which soon becomes bloody. mixing of deer groups, cold wet windy weather, yarding
transport and heavy parasite burdens,
It is recommended farmers should :
Reduce the effects of common stressors.
Wean before the rut when it is warmer and more feed
is available.
Vaccinate with Yersiniavax to prevent clinical disease.
Remember it is too late to vaccinate once an outbreak
of Yersiniosis has started
Yersiniosis vaccination is ideally administered prior to
the stress of weaning
Dated Preg Testing in Cows
Sheep Dog Trials Allows closer monitoring at calving especially with
heifers and studs.
Monitors the efficacy of cow cycling, conception, and
Once again we are proud to be supporting our local dog
bull activity.
trials and A&P shows.
Allows wintering of later cows differently.
This year we will be donating prizes with a value in excess
Gives the option to sell 3rd cycle/late calving cows.
of $4500 to the dog trial events in our area including a
Identifies bull sub-fertility (detectable if there are
set of quality Leupold binoculars valued at $260 RRP for
different conception rates after bulls have been
a prize at each of the 13 dog trial competitions.
swapped).
We will also be in attendance and supporting the dog
We can also do BVD screening and get any horns done
trials and A&P shows. We look forward to bumping into
at the same time.
a few of our clients at these events over the next couple
of months.
Dog Trial Dates
February 9th & 10th Tokarahi CC
February 21st & 22nd Strath Taieri CC
February 28th & 29th Waitaki CDC
March 1st & 2nd Omarama CDC
March 3rd & 4th Patearoa CC
March 9th & 10th St Bathans CC
March 27th & 28th Palmerston CC
Centennial Celebration
March 29th & 30th Omakau DTC Earnscleugh CC
April 3rd & 4th Macraes Flat CC
April 5th & 6th Waihemo CC
April 8th & 9th Waimate DTC
April 14th & 15th Saint Bathans CC
Centre Championships
April 17th & 18th Oamaru CDC
A & P Shows
Date A&P Show
8th February Palmerston Waihemo Dairying Cattle Creek style. It’s a long way to
15th February Central Otago (Omakau) drive to get milk from the top of the Haka Valley.
19th February Maniototo (Ranfurly) Isaac Milne with his house-cow to be “Brandy”,
28/29th February North Otago (Oamaru) who was preg-tested in-calf and is due August
4th March Strath Taieri (Middlemarch) 8 with a bull calf.
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