What's new on National Hog Farmer?
- Seeking
More Full-Value Pigs
- 12
Risk Factors Worth Checking
- California’s
Proposition 2 Passes by Wide
Majority
- COOL
Causes Trade Friction Between U.S.-Canada
Producers
- Blueprint Issue: Sow
& Pig Care – Birth to Weaning
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Market Preview
U.S.-Canadian
Exchange Rate More Balanced
“It was the best of times. It was the worst of
times.” So began Dickens’ “A Tale of Two Cities.”
While today doesn’t actually represent either the best or worst times
for Canadian pork producers, it certainly presents two very opposite,
but simultaneous, occurrences – a weaker Canadian dollar and mandatory
country-of-origin labeling (COOL). I’ll address the exchange rate
this week and gladly put off the mandatory COOL discussion until next.
The weaker Canadian dollar has provided a virtually instantaneous
increase in prices received by Canadian hog producers relative to their
U.S. counterparts. That is not to say that prices are good in Canada.
They just have not fallen nearly as much as they have in the States.
The simple reason is that a weaker Canadian dollar (i.e. more $Can
needed to make one $US) translates a given U.S. price into more Canadian
bucks.
Figure 1 shows historic weekly hog prices for the United States and
Canada (restated to $US/kg). I use Ontario prices simply because all
Canadian prices are highly correlated and the Ontario prices were
usually within the range of the other provincial prices. I could use
any Canadian price series and make my point because in recent weeks,
Canadian prices have stayed constant while U.S. prices have fallen
sharply.
This is no panacea, however. The weaker Canadian dollar also increases
the cost of any inputs whose prices are determined by the U.S. market.
Therefore, most feed costs have increased relative to those of U.S.
producers. However, only about 60% of Canadian production costs are
tied to U.S. prices, so Canadian producers win as virtually all of their
income grows and only a portion of their costs grow. That is the flip
side of the forces that have hammered Canadian producers since the
loonie (a nickname for the Canadian dollar; the coin has a loon on it)
began gaining value back in early 2003.
A further benefit of a weaker loonie is just now being felt as Canadian
product is more competitive in world markets. The cheap U.S dollar has
provided a pricing advantage to U.S. exporters for some time. The
rising dollar and, especially, the falling loonie, make Canada’s
products relatively better buys. I understand that Canadian sellers are
making substantial gains in Japan and China where currencies have gained
more relative to the Canadian dollar than to the U.S. dollar.
I have also divided Figure 1 into three pretty distinct periods. The
first, 2002 through most of 2004, was characterized by relatively high
prices in Canada that were trending back toward U.S. prices as the
Canadian dollar gained about 25% in relative value. Canadian breeding
herd growth peaked at 7.6%, year-over-year, in January 2002. The first
year-over-year decline in nine years occurred in April 2005 – shortly
past the end of the red-boxed period.
The third period (blue box) runs from the beginning of 2006 through the
third quarter of this year. It is characterized by low Canadian prices
relative to U.S prices and a huge (12.9%) reduction in Canada’s
breeding herd.
The other period (green box) is the one I find most interesting. From
Q4-’04 through 2005, the exchange rate averaged $Can1.21/$US (or $US
0.82/$Can, if you prefer). During that period, Canada’s
year-over-year breeding herd changes were +1.6, +1.0, -0.03, -0.7 and
-0.3%. The year-over-year breeding herd change in the United States was
less than 1% in either direction in all five of those quarters. I know
there were many other factors at play, but it certainly appears that the
U.S-Canadian pork industries might be more compatible at a ratio of
about $1.20:$1.00, doesn’t it?
And look where we are now: Roughly $1.20:$1.00. That doesn’t mean
things will be stable, since everyone is losing money at current feed
and hog prices. But it does suggest that the signals may be more
even-handed than they have been, thus allowing the two countries’
producers to move in tandem, perhaps, rather than in opposition.
So do you think we can get Ben Bernanke and Mark Carney (for U.S.
readers, Carney’s the Governor of The Bank of Canada) to cooperate a
little based on this evidence? Probably not, especially with the number
of alligators both of them are fighting during the current financial
swamp draining. But at least we have a bit of context in which to place
our exchange rate and what has happened in the past to the U.S. and
Canadian hog herds.

Click to view graphs.
Steve R. Meyer, Ph.D.
Paragon Economics, Inc.
e-mail: steve@paragoneconomics.com
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Swine Health Preview
Execution is
Critical to Diagnostic Outcome
It seems that diagnostic testing, at least in some
situations, adds confusion rather than clarity to a situation. The
numbers and types of tests are increasing. The performance –
sensitivity and specificity – of test types vary. What tests actually
measure can be confusing. A very brief summary is provided in Table 1.
Is there another reason diagnostic testing seemingly adds to confusion
rather than clarity?
The answer is woven into the very nature of biology. A very common
answer to questions that deal with biological systems is “it
depends!” All too often we choose to use diagnostic testing to confirm
a bias; that is, we tend to use the diagnostic results that are
convenient to us or provide the answer we want.
The results of diagnostic testing should be an unbiased aid in a
decision. These questions should be asked and answered before submitting
specimens to a diagnostic laboratory:
- What is it you want to know?
- What information do you need to better understand?
- What test(s) will provide useful information?
- And most importantly, what will you do differently, based on the
outcome of a diagnostic test?
The diagnostic questions will then determine the tests and testing
strategy chosen and how you will interpret the results. The unique
features of a production system and interactions of various risk factors
will strongly influence the diagnostic questions and decisions that are
impacted. Each case is different. Each test is different. Science is
usually much more complicated than we can fully appreciate.
It is risky to indiscriminately use “thumb rules” without an
appreciation for the variation and the uncertainties that are inherent
in production systems, in disease risk factors, in diagnostic tests, and
in the models we use. Still, we value additional, useful information in
a decision process. Diagnostic test results can be useful if the
diagnostic process is thoughtfully executed.
Diagnosis of Mycoplasma hyopneumoniae (Mh) infection by serology is a
good example where tests, testing strategies and test results
interpretation can be confusing. The IDEXX ELISA, Tween 20 ELISA and
DAKO/Oxoid ELISA are all good tests. One (Oxoid) may detect antibody a
bit sooner after infection in reality, but all perform well. The problem
is lack of cooperation by Mycoplasma itself. It is unique in several
ways:
-
Usually, an agent produces a detectable immune (antibody) response
within a couple of weeks after infection. Mh has the ability to colonize
piglets yet remain undetectable by serology for extended periods of
time. Figure 1 demonstrates this effect. There is delayed
seroconversion (weeks to months) with Mh compared to other swine
pathogens.
- In some situations, Mh may transmit slowly through a group of pigs.
Not all pigs will seroconvert.
- Infection may be subclinical. Neither the pigs nor the producer know
that the pigs are infected. They may perform well.
- A serum sample may test positive with one test and negative with
another test. This appears to be normal variation in test performance.
Generally, results should be interpreted on a herd basis. A single
“positive” suggests additional testing is warranted. Cross-reactions
have been suggested, but not effectively proven on a herd test
basis.
- The results of testing must be interpreted in the context of the
herd, clinical signs, and your specific diagnostic question. There is no
single right answer/testing procedure that will fit all
situations.
An example of coupling the steps recommended for diagnostic testing with
Mh serology application follows.
- Formulate a diagnostic question: What testing outcome will
influence a decision?
Example 1 – Is this group of finisher pigs infected with Mh?
Example 2 – Is this sow herd infected with Mh?
- Formulate a testing strategy, understanding that no test is
infallible.
- Indirect ELISA (IDEXX, Tween 20) may be a bit slower to
produce measurable antibodies (seroconvert).
- Competitive ELISA (DAKO/Oxoid is more sensitive early in antibody
response but is not reported in a way that quantifies the response
(either positive or negative).
- Formulate a sampling strategy:
Example 1 – Finisher: serum or oral fluid samples from pigs
nearing market weight.
- Serial sample (+/-) 20 tagged pigs at four week intervals (i.e.
8, 12, 16, 20, 24 weeks of age).
- Cross sectional: more variation, harder to interpret; need larger
sample size.
- Oral fluids from six pens at four week intervals.
Example 2 – Sow herd: serum sample piglets at 10 days of age for
maternal antibody.
- Colostrum antibody is higher concentration than serum
antibody.
- Suckling pigs acquire maternal antibody.
- Sample up to 30 robust, 10-14 day old pigs from different
litters, across parities.
- Interpretation of results: Is infection confirmed? How many
positives are there? Is it clinically relevant?
Example 1 – Finisher: positive samples; rising ELISA values
indicates the group has been exposed to Mh (interpret in context of
clinical signs and vaccination status).
Example 2 – Sow herd: positive samples generally mean there is Mh
infection in the sow herd.
CAUTION: sampling between 3 weeks and 16 weeks of age has strong
tendency to result in false negative status.
It may be useful to classify Mh status in populations similar to the
scheme used for porcine reproductive and respiratory syndrome (PRRS), as
seen in Table 2.

Click to view graphs.
Kent Schwartz, DVM
Iowa State University Veterinary Diagnostic Laboratory
kschwart@iastate.edu
Legislative Preview
Obama Wins
Senator Barack Obama (D-IL) was elected the 44th
President of the United States in a decisive victory on Nov. 4. Obama
carried a number of key swing states including Colorado, Florida,
Indiana, Nevada, New Mexico, Ohio and Virginia. This is the first time
since 1964 that a Democratic candidate for president has carried Indiana
and Virginia. Key voting blocks for Obama were voters between ages
18-29 (66%), African Americans (96%) and Hispanics (65%). He made
inroads into Catholic, single female and male voters. Obama also made
inroads into rural areas either by carrying rural counties or narrowing
the margin compared to 2004. We can expect the president-elect to move
quickly with his transition, economic and national security teams.
Democrats Make Congressional Gains — The Democrats increased
their hold on Congress by picking up five Senate seats and nearly 20
House seats. In the Senate, the seats gained were from Colorado, New
Hampshire, North Carolina, New Mexico and Virginia. Three races that
may go to recounts include Alaska, Minnesota and Oregon. If Senator Ted
Stevens (R-AK) survives the election, he will likely face a vote to
remove him from the Senate since he was found guilty in his recent
ethics trial. In the House of Representatives, with Democrats gaining
seats in the last two elections, there could be challenges to the House
Republican leadership. Already, Congressman Adam Putnam (R-FL) has
announced he will resign as chairman of the House Republican conference.
Agriculture Committees — At press time, all members of the
Senate Agriculture Committee were re-elected or leading. Senator Norm
Coleman (R-MN) was leading by only 600 votes, which becomes an automatic
recount in Minnesota. Senator Saxby Chambliss (R-GA), ranking member of
the Senate Agriculture Committee, was leading and close to securing 50%
of the votes, which under Georgia law is required to avoid a run-off
election. In the House of Representatives, seven members of the
Agriculture Committee were defeated: Congressmen Nancy Boyda (D-KS),
Robin Hayes (R-NC), John Kuhl (R-NY), Nick Lampson (D-TX), Tim Mahoney
(D-FL), Marilyn Musgrave (R-CO) and Tim Walberg (R-MI). Hayes served as
ranking member of the House Agriculture Livestock Subcommittee and was a
good friend of the meat and livestock industries.
Voters Approve Animal Welfare Initiative — California voters
approved by over 60% the referendum that would ban modern confinement
housing for egg-laying hens, pregnant sows and veal calves by 2015.
Arizona, Colorado, Florida and Oregon have passed similar legislation
for swine and veal. This vote will have a major influence on animal
welfare issues in the 111th Congress.
CAFO Rules for Manure Management — The Environmental
Protection Agency (EPA) announced final rules concerning concentrated
animal feeding operations (CAFOs). According to EPA, the “new
regulation of animal feedlots sets a strong national standard for
pollution prevention and environmental protection, while maintaining our
country’s economic and agricultural competitiveness. This clean water
rule strengthens environmental safeguards by embracing a zero discharge
standard and requiring site-specific management plans to prevent runoff
of excess nutrients into our nation’s waters.” Under the new rule,
a CAFO operator will be required to use a nutrient management plan (NMP)
for manure and it must be submitted as part of a CAFO’s Clean Water
Act permit application. The National Pork Producers Council (NPPC) said
the new CAFO regulation is a “tough but fair rule and sets a standard
that the U.S. pork industry has been and will continue living up to.
Pork producers are ready to comply with the new regulations.” The
National Cattlemen’s Beef Association (NCBA) said the rule “contains
substantial improvements in water quality protection and may improve
water quality as a result. We are encouraged that the rule includes a
number of incentives for livestock farms to operate at high levels of
environmental compliance. A positive aspect is that livestock farmers
will have flexibility to evaluate their farm and determine whether or
not to secure a permit.”
Van Dorn Named GIPSA Administrator — Terry Van Doren has been
named USDA Administrator of the Grain Inspection, Packers and Stockyards
Administration (GIPSA). Van Doren currently serves as a senior advisor
to Bruce Knight, USDA under secretary for marketing and regulatory
programs. He earlier served as the agricultural advisor to Senators
Mitch McConnell (R-KY) and Peter Fitzgerald (R-IL). Van Doren is a
native of Illinois.
P. Scott Shearer
Vice President
Bockorny Group
Washington, D.C.
Pork Industry Calendar
Nov. 16-19, 2008: American
Bankers Association Annual Conference, Des Moines Marriott Downtown,
Des Moines, IA; contact: call 800-BANKERS or visit www.aba.com.
Nov. 20, 2008: Kansas State University Swine Day,
Alumni Center, Manhattan, KS; contact: www.ksuswine.org
Click
here to get National Hog Farmer's complete pork
industry calendar.
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the order of a licensed veterinarian. Swine intended for human
consumption must not be slaughtered within 5 days of receiving a single
injection dose.

Click on the Baytril 100 logo for more information.
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