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14 Cards in this Set
- Front
- Back
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52 days in milk RO - CL LO - 1cm follicle |
PGF2a to lyse CL Estrus in 3-4 days |
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64 DIM Both ovaries small / inactive |
Anoestrus GnRH (stim follicular wave) or PRID |
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77 DIM LO - CL Received PGF2a 14 days ago Not seen in heat |
Has ovulated so poor oestrus detection PGF2a to lyse CL OVSYNC or improve heat detection |
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Ideal age to serve heifers? Ideal age at first calving? |
13 months - serve 24 months - calve |
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Voluntary weight period? |
42 days |
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Signs of anoestrus |
Small inactive follicles on both ovaries Clean vag exam Little to no mucus |
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Reasons for delayed return to oestrus |
Poor BCS Poor nutrition Concurrent dz eg mastitis |
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Options for a 1st lactation cow 50 days in milk in anoestrus with a BCS 1.5 |
Do nothing: recover BCS, Tx underlying dz and represent in a month or: PRID to Tx anoestrus |
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4th lactation cow 95 days in milk Not seen bulling LO - CL RO - some follicles Not pregnant |
Should return to heat 3-17 days, recommend heat detection decice, or: PGF2a to lyse CL - watch for oestrus in 2-5 days |
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55 DIM - not seen bulling Copious white vag discharge with bad smell LO - CL RO - follicles |
ENDOMETRITIS Intrauterine AB: Cephapirin PGF2a to lyse CL DO NOT SERVE - allow oestrus to help clear infection (myometrial contractions) Re-examine in 2wks |
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Thin walled palpable fluid filled structure scanned on right ovary |
Follicular cyst |
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Tx for follicular cyst |
GnRH (Receptal) Should see in 2wks time: Lutenised cyst or, Cyst but now presence of CL or, No cyst with presence of CL
Now give PGF2a to lyse CL Heat in 2-5 days (Can use a PRID for cyst too) |
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PRID protocol / timings |
Put in on day 0 Give PGF2a 24hrs before removal (lyse any CL present) Remove on day 7 Inseminate 48 and 72hrs after removal (or 56 if only once) |
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OVSYNC protocol / timings |
Day 0 - GNRH (stimulate follicular wave - ovulation) Day 7 - PGF2a (lyse CL) Day 9 - GNRH (stimulate ovulation) Day 10 - AI (16-20hrs after GNRH) |
