VSFCP National Standards (Revised June 2017)

National Standards Index

6 & 7. Program Specific Pathway 3

Note: This pathway is not available to goats.

There are two distinct ways in which a producer may prepare their flock for application into this pathway.

6. Whole-Flock Genetic Screening

6.1

A blood sample is collected from all breeding sheep and submitted for genotyping by a CFIA-approved laboratory. The genotype of 136AA 171RR breeding males must be determined twice and the genotype of breeding females must be determined once. (See sections 3.20 and 3.21 under General Rules for more details.)

6.2

Upon receipt of the results, all breeding females and males that are determined to be 171QQ (136AA 171QQ, 136AV 171QQ, 136VV 171QQ) or 136AV 171QR are removed from the breeding flock.

If any of the breeding stock to be retained have been bred, it will be necessary to determine the genotype of their progeny to determine whether they may also be retained.

6.3

After removing 171QQ (136AA 171QQ, 136AV 171QQ, 136VV 171QQ) and 136AV 171QR sheep from the flock, an updated inventory documenting the fact that all remaining breeding sheep are 136AA 171RR or 136 AA 171QR must be conducted under the supervision of a veterinarian accredited to deliver the VSFCP. At this point the producer may officially apply to enter the VSFCP and, if accepted, enter at level A.

6.4

Commencing upon acceptance into the program, brain samples from all sheep over 12 months of age that die on the farm (deadstock) must be submitted for scrapie testing by a CFIA-approved laboratory. If no suitable samples have been submitted for testing for a period of time equal to or exceeding 12 months, at least one animal 18 months of age or older, which has resided in the flock/herd for no less than 18 months, is to be humanely destroyed (in any manner: slaughter, euthanasia) and a sample submitted for testing.

Alternatively, if no suitable samples have been submitted for testing for a period of time equal to or exceeding 12 months, an enrolled producer may be permitted to remain on the program without advancing to the next level for one additional year (allowing time to raise an animal for slaughter and testing). For certified producers, they would incur a one year status penalty dropping them from certified to Level A.

6.5

Newly purchased breeding stock must be genotyped 136 AA 171QR or 136AA 171RR by a CFIA-approved laboratory. This restriction also applies to semen.

Sheep

Scrapie Information & Facts

LABRATORIES COMPLETING OBEX
TESTING FOR THE PREVALENCE STUDY

Prior to shipping any samples, be sure to read all information concerning packing and shipping samples.

PRAIRIE DIAGNOSTIC SERVICES Inc.

52 Campus Drive
Saskatoon, SK, CANADA, S7N 5B4
PHONE: 306-966-7316

ALBERTA AGRICULTURE AND RURAL DEPT

Agri-Food Laboratories Branch
TSE Laboratory
6909 – 116th Street
Edmonton, AB Canada, T6H 4P2
Phone: 780-422-4830
Facsimile: 780-415-4527

 

ANIMAL HEALTH LABRATORY

Laboratory Services, a division of
the University of Guelph
Building 49, OVC, Box 3612,
Guelph, ON, Canada, N1H 6R8
Phone: 519-824-4120 X: 54544
Fax: 519-821-8072

MANITOBA AGRICULTURE
FOOD AND RURAL INITIATIVES

Veterinary Services Branch
Veterinary Diagnostic Services
545 University Crescent
Winnipeg, Manitoba, R3T 5S6
Telephone: 204-945-8220

6.6

Ewe offspring (including embryos) from a mating, involving at least one 136AA 171RR parent, may be retained in the flock for breeding purposes without genotyping.

6.7

Offspring (including embryos) from all other matings (other than those involving at least one 136AA 171RR parent) must be genotyped or removed from the flock by 12 months of age. 171QQ offspring must be removed by 12 months of age.

6.8

After one year of continuing the requirements for restrictions on genotype of introduced animals and deadstock surveillance, and the compilation of a second annual inventory that documents the appropriate flock membership, the owner may apply for advancement in the VSFCP to certified level status.

6.9

Once a flock has attained the certified level, it maintains this level provided that the requirements for this level (genotyping of offspring from non RR matings and genotype restriction on purchased breeding stock or germplasm; deadstock surveillance) are followed. An annual request, with the accompanying annual report (including animal inventory and all supporting documentation), must be submitted to the status assessor.

7. Rams-Only Genetic Screening

7.1

A producer starts by selecting breeding rams that are documented 136AA 171RR. The genotype of 136AA 171RR breeding males must be determined twice. (See sections 3.20 and 3.21 under General Rules for more details.)

7.2

Over subsequent breeding cycles, the flock is culled such that all remaining sheep can be documented (by flock records) to be offspring of a 136AA 171RR ram.

7.3

All subsequent breeding males, be they natural replacements, purchases or loans, must be 136AA 171RR. Semen must be sourced from rams genotyped 136AA 171RR. All breeding females, other than natural replacements, and embryos must be established by genotyping as 136 AA 171QR or RR.

7.4

At this point, an annual inventory documenting the removal of 171QQ (136AA 171QQ, 136AV 171QQ, 136VV 171QQ) and 136AV 171QR and ungenotyped sheep must be conducted under the supervision of a veterinarian accredited to deliver the VSFCP. At this point, the producer may officially apply to enter the VSFCP and, if accepted, enter at level A.

7.5

Commencing upon acceptance into the program, a brain sample from all sheep over 12 months of age that die on the farm (deadstock) must be submitted for scrapie testing by a CFIA approved laboratory. If no suitable samples have been submitted for testing for a period of time equal to or exceeding 12 months, at least one animal 18 months of age or older, which has resided in the flock/herd for no less than 18 months, is to be humanely destroyed (in any manner: slaughter, euthanasia) and a sample submitted for testing.

Alternatively, if no suitable samples have been submitted for testing for a period of time equal to or exceeding 12 months, an enrolled producer may be permitted to remain on the program without advancing to the next level for one additional year (allowing time to raise an animal for slaughter and testing). For certified producers, they would incur a one year status penalty dropping them from certified to Level A.

7.6

After one year of continuing the requirements for restrictions on genotype of introduced animals and deadstock surveillance, and the compilation of a second annual inventory that documents the appropriate flock membership, the owner may apply to advance to the certified level of the VSFCP.

7.7

Once a flock has attained the certified level, it maintains this level provided that the requirements for this level (selection of replacement breeding rams genotyped twice and purchased ewes, and deadstock surveillance) are followed. An annual request, with the accompanying annual report including animal inventory and all supporting documentation, must be submitted to the status assessor.

Return to top