Not sure, but I've "herd" (no pun intended) Yield Rate very often here in Nebraska, one of the biggest beef-producing states in the U.S.

I'm thinking Yield Rate

[DOC] Beef production will
... Slaughter results for young bulls from beef breeds show that there is a very wide difference both for slaughter percentage and for the classification from ...
www.agromek.dk/ docs/Beef_production_will_be_more_efficient.doc

Braunvieh Hinton Milk & Beef Production
... Saleable meat %, 84.70, 83.90, 82.00. The slaughter percentage which is significantly higher is of considerable economic value to the producer.
braunvieh-hinton.com/production.html

Cattle
... animals. Their appetite, slaughter percentage improves, and they are calmer. Use: 15 g/animal/day during the last 2 months. BISORA. ...
www.biosan.be/cattle.htm

The genetic basis of meat quality
... It is possible to breed animals with higher slaughter percentage and meat production, but usually it is at the expense of reproduction traits. ...
www.studmaster.co.za/bonsmara/ journal_1999_meat_quality.htm

:) Aqui fica o meu protesto contra a matança desenfreada de cobaias!

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Note added at 6 mins (2004-06-09 16:32:47 GMT)
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Peguei três exemplos:

In the long run, experts foresee a continued growth of the sector, including an increase
in the slaughtering rate, ie the proportion of slaughter cattle in the ...
www.braseuropa.be/carnebovinain.htm - 20k - Em cache - Páginas Semelhantes

[PDF] Whole Hog ISSUE 27
Formato do arquivo: PDF/Adobe Acrobat - Ver em HTML
... The current trough in sow slaughter occurred at a slaughtering rate of 7,100 head
per week (itself a high figure, pre- vious troughs being 6,200, 6,700, and ...
www.porkinfo.com/StrakRep10.pdf - Páginas Semelhantes

Leather technology News - [ Traduzir esta página ]
... the moment. In Brazil, the slaughtering rate has decreased by about 10
%, but there are still many green hides available. The governor ...
www.basf.de/en/produkte/farbmittel/ farben/leder/news/010925.htm - Páginas Semelhantes

:: Highland Beef Inc. 2002 ::
... with individual animal information on over 7000 cattle. ... of providing trace back of
slaughter yield and quality grade ... back to the individual animal in the herd. ...
www.highlandbeef.com/value_chain/index.php - 17k - Cached - Similar pages

Ch03
... of the energy consumed by the herd or flock is ... of the major livestock species (cattle,
sheep, pigs ... female, Live- weight at slaughter, Slaughter yield, Daily weight ...
www.fao.org/docrep/x5082e/X5082E03.htm - 37k - Cached - Similar pages

[PDF] World beef production is expected to increase about 1.4 percent ...
File Format: PDF/Adobe Acrobat
... supply as cows are retained for herd rebuilding. ... a major feed input for beef cattle,
will be ... Beef Supply and Use Projections Slaughter Yield Production Imports ...
www.ers.usda.gov/publications/aer767/aer767g.pdf - Similar pages

[PDF] TAMBI art.
File Format: PDF/Adobe Acrobat
... and Nigeria accounted for 45% and 39% of the regional slaughter yield, respectively. ... Epiz.,
22 (3) © OIE - 2003 Table I The total cattle herd size, number of ...
www.oie.int/eng/publicat/rt/2203/PDF22-3/16.Tambi.pdf - Similar pages

[PDF] MARKETING ALLIANCES: A CASE STUDY BETWEEN A YOUNG STEER PRODUCERS ...
File Format: PDF/Adobe Acrobat - View as HTML
... The slaughter rate of the Brazilian cattle herd, which was of ... price paid to the cattle
breeder and ... Disagreements on the animals slaughter yield (production risk ...
www.ifama.org/conferences/2004Conference/ Papers/Caleman1045.pdf - Similar pages


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Note added at 42 mins (2004-06-09 17:07:59 GMT)
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or perhaps slaughter rate...

Rural News - 29/10/2002: Cattle slaughter rate rise
Australian Broadcasting Corporation Online, ABC Rural Homepage >> Rural
News >> Cattle slaughter rate rise. ... Cattle slaughter rate rise -. ...
www.abc.net.au/rural/news/stories/s713629.htm - 19k - Cached - Similar pages

Schedule GL46
... TABLE I. MONITORING FREQUENCY. Slaughter Rate. Number of cattle/shift. Frequency
of monitoring periods 1/. Up to 500. 2. 501 – 1,000. 4. 1,001 - 1,500. 6. ...
www.ams.usda.gov/lsg/certprog/schedules/schedGL-46.htm - 34k - Cached - Similar pages

Schedule GL 37
... TABLE I. MONITORING FREQUENCY. Slaughter Rate Number of cattle/shift. Frequency
of monitoring periods 1/. Up to 500. 2. 501 – 1,000. 4. 1,001 - 1,500. 6. ...
www.ams.usda.gov/lsg/certprog/schedules/schedGL-37.htm - 14k - Cached - Similar pages
[ More results from www.ams.usda.gov ]

Outlook Update 325
... However, the cow slaughter rate in the north central states will be larger than
normal due to poor winter weather conditions, an increase in the ... Fed-Cattle. ...
cherokee.agecon.clemson.edu/otlk325.htm - 6k - Cached - Similar pages

Outlook Update 308
... The slaughter rate is being accelerated by the drought in the Southern Plains and ... Cattle
producers not in drought affected areas are still waiting for this ...
cherokee.agecon.clemson.edu/otlk308.htm - 7k - Cached - Similar pages
[ More results from cherokee.agecon.clemson.edu ]

MyCattle International News
... Slaughter Rate Alarm. ... Jan 15, 2003 (The Weekly Times - ABIX via COMTEX) -- In late
2002, there was a marked increase in the number of cattle slaughtered in ...
www.mycattle.com/ news/dsp_international_article.cfm?storyid=7820 - 21k - Cached - Similar pages

Meat and Livestock Australia
... female cattle slaughter for the first quarter of the year fell 18% compared with
the same period last year, to 399,000 head, the lowest slaughter rate since ...
www.mla.com.au/ content.cfm?sid=1017&newsid=3746&archive=show - 59k - Cached - Similar pages

Cattle Hedging Article - Drovers, February 2002
... ideal feeding weather experienced throughout the major cattle-feeding region and
the apparent unwillingness of packers to gear up the slaughter rate, Ms. Yocam ...
www.aginvestor.com/feb02drov.htm - 7k - Cached - Similar pages

slaughter
... The slaughter rate of sheep & goats is more than 40%, which is alarmingly high for
a ... in slaughtering is taking its toll of the good variety of cattle, sheep & ...
www.primeindia.com/manav/cruel9.html - 7k - Cached - Similar pages

[PDF] Application to Mature Animal Abattoir Fund
File Format: PDF/Adobe Acrobat - View as HTML
... Slaughter Rate (head per month) Slaughter Rate (head per month) Slaughter Rate (head
per month) Slaughter Rate (head per month) January Cull Cattle Fed Cattle ...
www.gov.on.ca/OMAFRA/english/policy/bserp/ MAAF_Grant_Application_Form.pdf - Similar pages

sow lifetimeproductivity (pigs marketed/sow/lifetime)•

This is your equation, but it doesn't look like the term is anywhere near well established. It seems to refer to Africa mostly, and to herds of wild animals as well as domestic ones. You may also find it as off take, takeoff or take off rate.
http://www.vslp.org/vslp/methodology/X5469e/x5469e0c.htm
Gross offtake
At the herd or flock level, the total voluntary disposal of animals by sale, slaughter, exchange and/or giving is known as gross offtake. It is an absolute measure which, for a given time period (t), is defined as:

Gross offtake in period (t) = sum of sales + slaughters + exchanges + gifts during period (t)
The measure thus includes disposals for commercial and non-commercial purposes. It can be calculated at the individual herd/flock level or aggregated (summed) for an area as a whole (e.g. region, district, nation). When aggregated, gifts and exchanges between producers within treated as transfers which cancel out. They are therefore excluded from the equation. Strictly speaking, all exchanges and gifts to producers outside the area should be included. However, they are usually extremely cliff cult to measure and are, therefore, commonly ignored.
Gross offtake rate
For the purposes of comparison, gross offtake should be expressed in relative, not absolute, terms. To do this, the gross offtake rate is used, which, for a herd or flock, is defined as:

Gross offtake rate in period (t) (%):

Gross offtake in period (t)
___________________________________________ x 100
Total herd/flock size at start of period (t)

Gross offtake rate in period (t) is often termed as the offtake rate3. It only measures outflows and takes no account of acquisitions or inflows into the herd, flock or area.
3 The size of the herd or flock at the beginning of the year is commonly termed the 'opening number' and the size at the end of the year is known as the 'closing number'.

Where we are finishing stock for slaughter or onselling them to other farmers as stores,this is the main productivity measure we use. Or you can use 'percentage survival to sale'.They both relate to the total number of female breeding stock mated though, not to the whole flock/herd (which includes immature female animals).

http://www.wrightson.co.nz/knowhow/cw_details.asp?article_id...