Overpopulation myth used to fear monger Senate into treating wild horses like pests

 

For immediate release:

Public outraged killing and sales to slaughter is proposed by Zinke

WASHINGTON (June 21, 2017)–With no accurate head count of wild horses in the wild, the new Secretary of Interior, Ryan Zinke, pushes forward in the Senate tomorrow to lift the ban on destroying wild horses and unlimited sales by the truckload. Sales in the past of thousands of wild horses have resulted in America’s mustangs being slaughterd for a delicacy meal abroad. Protect Mustangs is petitioning for a Congressional investigation and head count of wild horses and burros (https://www.change.org/p/u-s-senate-investigate-the-wild-horse-burro-count-in-captivity-and-freedom) to find out how many are left and how many have already disappeared.

“The wild horse management responsibility of the Department of the Interior’s Bureau of Land Management mandates an accurate population count”, states Christine DeCarlo, PhD. “This is the only moral and legal way forward. Without that data any proposal can not be justified. A DNA study is warranted but just counting noses at this point would be a huge step in the right direction.”

“It’s time for the truth to come out before America’s last herds of wild horses are managed to extinction through killing, sterilization, sales by the truckload or pesticides used for birth control,” states Anne Novak, executive director of Protect Mustangs. “The bottom line is Americans want their wild horses protected. Count them first, then base management on accurate information, not hype.”

“We need an independent professional census done of all the wild horses and wild burros who remain upon the BLM and US Forest Service lands in and around their legal Herd Areas (BLM) and Territories (U.S. Forest Service),” explains Craig Downer, wildlife ecologist, Ph.D c. “I recognize that the situation is urgent, because this year I have been out in the field observing a number of the wild horse and wild burro herds, and am finding very few left.”

Pesticide PZP, made from slaughterhouse pig ovaries, and other forms of fertility control, is being pushed as a solution to the fake overpopulation problem. Without a head count of wild horses in the wild, basic information needed is ignored. Why has the bureau avoided head counts in the wild? Is it because the decline in population and the risk to herd survival would be exposed?

“When we include birth controls, such as Pesticide PZP, we have simply added yet another layer to the ‘Road to Extinction'”, states John Cox, veteran, author and nature photographer. “We go to ecological zones that are being destroyed, with low viability wildlife census populations, essentially going extinct (i.e. wild horses et al.) — then we go to diminishing lands-based parameters that require diversity, but there is only an estimated 4% of those lands left, which creates extinction of both wildlife and vegetation and yet another chain of extinction that exists yet ignored — then we go to the strata of different local areas, and the difference in census populations of wildlife, which creates different situations (one size does not fit all) and we find problems in both lands-mass as well as very low or next to no population viability.”

The National Academy of Sciences stated in their 2013 report (https://www.nap.edu/catalog/13511/using-science-to-improve-the-blm-wild-horse-and-burro-program) that there was “no evidence of overpopulation”. Since then the Department of Interior and the Bureau of Land Management have continued to spend millions on roundups and off-range holding based on inflated population estimates to fund their program.

Novak’s #NoKill Mustangs petition has more than 223,000 signatures: http://www.thepetitionsite.com/907/592/301/demand-nokill-45000-wild-horses-burros-in-holding/

Protect Mustangs’ Defund the Roundups and Stop the Slaughter Petition has more than 106,000 Signatures: https://www.change.org/p/defund-and-stop-the-wild-horse-burro-roundups

“Overpopulation is fake news,” says Novak. “We won’t let them kill wild horses, use pesticides on them or sell them to slaughter buyers. Wild horses aren’t pests or a meat source–they are national treasures and icons of freedom. The public is outraged.”

# # #

Links of Interest:

Live hearing June 22, 2017: https://naturalresources.house.gov/calendar/eventsingle.aspx?EventID=402138

Committee Hearing Notice: https://naturalresources.house.gov/uploadedfiles/hearing_notice_–_ov_hrg_06.22.17.pdf

Pesticide PZP Fact Sheet: https://www3.epa.gov/pesticides/chem_search/reg_actions/pending/fs_PC-176603_01-Jan-12.pdf

Dangers of PZP: http://protectmustangs.org/?page_id=6922

Media Contacts:

Anne Novak: Tel./Text: 415.531.8454, Anne@ProtectMustangs.org
Twitter: https://twitter.com/TheAnneNovak
Facebook: https://www.facebook.com/ProtectMustangs

Stephanie Allen: Tel./Text: 414.544.2015, sallenicrofwi@gmail.com

Protect Mustangs is a 501(c)3 nonprofit organization dedicated to the protection and preservation of native and wild horses. www.ProtectMustangs.org



Equine reproductive immunology Ph.D speaks out in 2010 against using PZP on wild horses

PM President Obama Listen to the Science

November 27, 2010

Jared Bybee, Wild Horse and Burro Specialist

Department of the Interior

Bureau of Land Management

Billings Field Office

5001 Southgate Drive

Billings, Montana 59101-4669

VIA FAX: 406-896-5281

RE: Pryor Mountain Wild Horse Range Fertility Control Preliminary Environmental
Assessment Tiered to the Pryor Mountain Wild Horse Range Environmental Assessment and Herd Management Area Plan May 2009 EA DOI-BLM-MT-0010-2011-0004-EA

Dear Jared Bybee:

Background

I appreciate the opportunity to submit comments on the Pryor Mountain Wild Horse Range
Fertility Control Preliminary Environmental Assessment Tiered to the Pryor Mountain Wild
Horse Range Environmental Assessment and Herd Management Area Plan May 2009 EA DOI-BLM-MT-0010-2011-0004-EA. My background is in equine reproductive immunology and wildlife conservation. I applaud the Billings Field Office of the Bureau of Land Management (BLM) for a thoughtful approach to this issue. Cover letter 4700 (010.JB) dated November 2010 and signed by James M. Sparks, Field Manager states that the BLM would consider comments and revision to the EA or unsigned FONSI as appropriate. I urge a “no action alternative” as outlined on page 7 and 8 of the EA. This request is based on two pieces of new scientific evidence about effects of current immuno-contraception use.

Porcine Zona Pellucida (PZP) Contraception

The proposed action as stated on page 7 of this EA would exempt “mares ages 5-10 unless they have produced foals, or are part of a large bloodline.” This is reminiscent of the approach taken with the Assateague Island wild horse population. It is a compromise approach to this issue, in comparison to placing all mares on PZP. However a recent study shows that mitochondrial DNA diversity is low in the Assateague Island horse herd (Eggert et al. 2010). Since mitochondrial DNA is inherited from the mother (mare), this is evidence that female inherited genetics on Assateague Island wild horses is under represented. It is imperative that this be assessed before rolling out a similar management plan for the Pryor Mountain wild horses.

There is a recent Princeton University study on PZP effects. Consecutive PZP applications, analogous to the proposed action plan in this EA, showed that mares gave birth later in the season, and were cycling into the fall months (Nunez et al. 2010). In a state like Montana where freezing temperatures are found in the fall, this can have serious and long term effects on foal survivorship.

I must include a statement on long term consecutive use of PZP. Any form of PZP contraception is not completely reversible in mares depending on the length of use of PZP. Contraception can only be reversed when the antibody titer decreases to 50-60% of the positive reference sera (Liu et al. 2005). Mares treated for 7 consecutive years do not return to viable fertility (Kirkpatrick and Turner 2002; Kirkpatrick et al. 2009). The issue of reversible contraception is very important to be able to maintain wild equines in the United States. Long term treatment with PZP has inherent negative potential for this herd.

I am requesting a new look at the proposed fertility control action for the Pryor Mountain wild horses.

Sincerely,

Christine DeCarlo, Ph.D.

Lori S. Eggert, David M. Powell, et al. (2010). “Pedigrees and the Study of the Wild Horse
Population of Assateague Island National Seashore.” Journal of Wildlife Management
74(5): 963-973.

J. F. Kirkpatrick, A. Rowan, et al. (2009). “The practical side of immunocontraception: zona
proteins and wildlife.” J Reprod Immunol 83(1-2): 151-7.

J. F. Kirkpatrick and A. Turner (2002). “Reversibility of action and safety during pregnancy of immunization against porcine zona pellucida in wild mares (Equus caballus).” Reprod
Suppl 60: 197-202.

I. K. Liu, J. W. Turner, Jr., et al. (2005). “Persistence of anti-zonae pellucidae antibodies
following a single inoculation of porcine zonae pellucidae in the domestic equine.”
Reproduction 129(2): 181-90.

Cassandra M. V. Nunez, James S. Adelman, et al. (2010). “Immunoctraception in Wild Horses (Equus caballus) Extends Reproductive Cycling Beyond the Normal Breeding Season.” PLos ONE 5(10): 1-10.

(Posted for educational purposes)

 

Equine reproductive immunology Ph.D speaks out in 2010 against using PZP on wild horses

Native Wild Horses (Photo © Cynthia Smalley, all rights reserved)

Native Wild Horses (Photo © Cynthia Smalley, all rights reserved)

November 27, 2010 

Jared Bybee, Wild Horse and Burro Specialist 

Department of the Interior 

Bureau of Land Management 

Billings Field Office 

5001 Southgate Drive 

Billings, Montana 59101-4669 

VIA FAX: 406-896-5281 

RE: Pryor Mountain Wild Horse Range Fertility Control Preliminary Environmental 
Assessment Tiered to the Pryor Mountain Wild Horse Range Environmental Assessment 
and Herd Management Area Plan May 2009 EA DOI-BLM-MT-0010-2011-0004-EA 

Dear Jared Bybee: 

Background 

I appreciate the opportunity to submit comments on the Pryor Mountain Wild Horse Range 
Fertility Control Preliminary Environmental Assessment Tiered to the Pryor Mountain Wild 
Horse Range Environmental Assessment and Herd Management Area Plan May 2009 EA DOI-
BLM-MT-0010-2011-0004-EA. My background is in equine reproductive immunology and 
wildlife conservation. I applaud the Billings Field Office of the Bureau of Land Management 
(BLM) for a thoughtful approach to this issue. Cover letter 4700 (010.JB) dated November 1. 
2010 and signed by James M. Sparks, Field Manager states that the BLM would consider 
comments and revision to the EA or unsigned FONSI as appropriate. I urge a “no action 
alternative” as outlined on page 7 and 8 of the EA. This request is based on two pieces of new 
scientific evidence about effects of current immuno-contraception use. 

Porcine Zona Pellucida (PZP) Contraception 

The proposed action as stated on page 7 of this EA would exempt “mares ages 5-10 unless they 
have produced foals, or are part of a large bloodline.” This is reminiscent of the approach taken 
with the Assateague Island wild horse population. It is a compromise approach to this issue, in 
comparison to placing all mares on PZP. However a recent study shows that mitochondrial DNA 
diversity is low in the Assateague Island horse herd (Eggert et al. 2010). Since mitochondrial 
DNA is inherited from the mother (mare), this is evidence that female inherited genetics on 
Assateague Island wild horses is under represented. It is imperative that this be assessed before 
rolling out a similar management plan for the Pryor Mountain wild horses. 

There is a recent Princeton University study on PZP effects. Consecutive PZP applications, 
analogous to the proposed action plan in this EA, showed that mares gave birth later in the 
season, and were cycling into the fall months (Nunez et al. 2010). In a state like Montana where 

freezing temperatures are found in the fall, this can have serious and long term effects on foal 
survivorship. 

I must include a statement on long term consecutive use of PZP. Any form of PZP contraception 
is not completely reversible in mares depending on the length of use of PZP. Contraception can 
only be reversed when the antibody titer decreases to 50-60% of the positive reference sera (Liu 
et al. 2005). Mares treated for 7 consecutive years do not return to viable fertility (Kirkpatrick 
and Turner 2002; Kirkpatrick et al. 2009). The issue of reversible contraception is very important 
to be able to maintain wild equines in the United States. Long term treatment with PZP has 
inherent negative potential for this herd. 

I am requesting a new look at the proposed fertility control action for the Pryor Mountain wild 
horses. 

Sincerely, 

Christine DeCarlo, Ph.D. 

Lori S. Eggert, David M. Powell, et al. (2010). "Pedigrees and the Study of the Wild Horse 
Population of Assateague Island National Seashore." Journal of Wildlife Management 
74(5): 963-973. 

J. F. Kirkpatrick, A. Rowan, et al. (2009). "The practical side of immunocontraception: zona 
proteins and wildlife." J Reprod Immunol 83(1-2): 151-7. 

J. F. Kirkpatrick and A. Turner (2002). "Reversibility of action and safety during pregnancy of 
immunization against porcine zona pellucida in wild mares (Equus caballus)." Reprod 
Suppl 60: 197-202. 

I. K. Liu, J. W. Turner, Jr., et al. (2005). "Persistence of anti-zonae pellucidae antibodies 
following a single inoculation of porcine zonae pellucidae in the domestic equine." 
Reproduction 129(2): 181-90. 

Cassandra M. V. Nunez, James S. Adelman, et al. (2010). "Immunoctraception in Wild Horses 
(Equus caballus) Extends Reproductive Cycling Beyond the Normal Breeding Season." 
PLos ONE 5(10): 1-10.

(Posted for educational purposes)