PROGRAMAS DE SINCRONIZACIÓN ESTRALSINCRONIZACIÓN ESTRAL

M.V.Z.,M.C. ERIC FRAGA ESCAMILLA

Ho

rmo

na

l

Ovulación

Ovulación

Dominancia

PGF2αααα

FSH

E2

LH

EL CICLO ESTRAL

CL Progesterona

Estro Estro5 10 15

Co

nce

ntr

aci

ón

Ho

rmo

na

l

Endometrio PGF2αααα

Seleción

Atresia

Reclutamiento

FASE LUTEÍNICACUERPO LÚTEO ACTIVO

NIVELES ALTOS DE PROGESTERONA

P4

Sincronización de celos

1) Prostaglandina F2a

Hormonas

1) Prostaglandina F2a

(2) Progesterona

(3) Estrógenos

(4) GnRH

PROGESTAGENOSIMPLANTE AURICULAR

CRESTAR: PROTOCOLO BÁSICO

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CRESTAR (PABELLÓN AURICULAR)�

• Implante CRESTAR

RETIRO

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INYECCIÓN NORG+V.E. (2 ml)

INSEMINACIÓNARTIFICIAL

• Implante CRESTAR

• 9 ó 10 días 48 hrs

CRESTAR: GANADO DE CARNE CON CRÍA

�

�

CRESTAR (PABELLÓN AURICULAR)�

• Implante CRESTAR

RETIRO

�INYECCIÓN NORG+V.E. (2 ml)

INSEMINACIÓNARTIFICIAL

• Implante CRESTAR

• 9 ó 10 días 56 hrs

FOLIGON(500 UI IM)

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CRESTAR: GANADO LECHERO (VAQUILLAS)

Implantación� IARetiro

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56 horas

InyecciónCRESTAR

• Implante CRESTAR

• 9 ó 10 días

48 hrs

�FOLLIGON(500 UI IM)

PROSOLVIN2ml (IM)

FIG. 1. Classification of the days of the

bovine estrous cycle based on ovarian

structures. Pair of ovaries from one

cow at

a particular day(s) of the estrous cycle

is

shown. Detailed descriptions for

classification

of different days of estrous cycle are

presented in Table 1.

Plate 1. Days 1–3. 1, External view of

growing CL; 2, external view of growing CL; 2, external view of

regressed

CL of previous cycle; 3, internal view of

growing CL; 4, internal view of

regressed

CL(s) of previous cycle(s)

Plate 2. Days 4–6. 1, External view of

growing CL; 2, internal view of growing

CL; 3, follicle.

Plate 3. Days 7–9. 1, External view of

growing CL; 2, external view of

regressed

CL of previous cycle; 3, internal view of

growing CL; 4, follicle.

Plate 4. Days 10–12. 1, External view

of

growing CL; 2, growing blood vessels;

3,

follicle; 4, internal view of growing CL.

FIG. 1. Continued.

Plate 5. Days 13–15. 1, External view

of

growing CL; 2, well-developed blood

vessels;

3, follicle; 4, internal view of growing

CL.

Plate 6. Days 16–18. 1, External view

of

regressing CL; 2, regressing blood regressing CL; 2, regressing blood

vessels;

3, follicle; 4, internal view of regressing

CL.

Plate 7. Days 19–21. 1, External view

of

regressing CL; 2, follicle; 3, internal

view

of regressing CL.

Plate 8. 1, External view of CL of

pregnancy;

2, well-developed blood vessels; 3,

internal view of CL of pregnancy.

FIG. 2. Examples of the four grades of oocytes (Grades l–4) are shown, with Grade 1 being assessed as the highest

quality oocyte.

A) Grade 1. Compact cumulus (.4–5 layers) with a homogeneous ooplasm.

B) Grade 2. Compact cumulus of one to two layers with homogeneous ooplasm having a coarse appearance.

C) Grade 3. Less compact cumulus (slightly expanded cumulus) with irregular ooplasm containing dark clusters.

D) Grade 4. Denuded oocyte or expanded cumulus, irregular ooplasm.

Dominancia

PGF2αααα

FSH

E2

LH Ovulation

Horm

on

e co

nce

ntr

ati

on

Estrus 5 10 15

Reclutamiento

Seleción

Atresia