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Estrous
Estrous cycle
STUDENT : ASSOSIATE PROFFESOR :
Amin Gilgiti Dr. Akeel Memon
Reg # 2k13-AV-20 Department of vet reproduction
Faculty of Animal Husbandry & Veterinary Sciences
Sindh Agriculture University, Tandojam
 Introduction
 Benefits
 Estrous hormones
 Protocols
 References
 The end
 Estrous synchronization is a reproductive
management tool that is particularly useful in
artificial insemination (AI) and embryo
transfer (ET) programs.
 It manipulates females estrous cycles with
one or more hormones to bring cattle into
estrus (heat) within a short period of time.
 Estrous synchronization is important to
conveniently time the breeding of cattle in AI
and ET programs.
Estrous synchronization with natural breeding
can produce calves earlier in the calving season
that will be heavier at weaning and have
enhanced carcass values.
Calves will be more uniform in age at weaning.
Estrous synchronization also improves calf crop
genetics when superior AI sires are used.
Maximum services from veterinary personals at
a time.
hormones Commercial names
GnRH Cystorelin速, Factrel速, Fertagyl速, OvaCyst速
PG estroPLAN速, Estrumate速, In-Synch速, Lutalyse速, ProstaMate速
progesteron MGA速 (melangestrol acetate), CIDR速 (progesterone
A variety of estrous synchronization protocols
are available.
Protocols differ in hormones used, method of
hormone administration (injection, vaginal
insert, or consumption through feed), number of
injections, number of times cattle must be
handled, timing of injections, and heat detection
requirements.
The cost of each protocol depends on the
products used and labor needed.
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Estrous

  • 2. Estrous cycle STUDENT : ASSOSIATE PROFFESOR : Amin Gilgiti Dr. Akeel Memon Reg # 2k13-AV-20 Department of vet reproduction Faculty of Animal Husbandry & Veterinary Sciences Sindh Agriculture University, Tandojam
  • 3. Introduction Benefits Estrous hormones Protocols References The end
  • 4. Estrous synchronization is a reproductive management tool that is particularly useful in artificial insemination (AI) and embryo transfer (ET) programs. It manipulates females estrous cycles with one or more hormones to bring cattle into estrus (heat) within a short period of time. Estrous synchronization is important to conveniently time the breeding of cattle in AI and ET programs.
  • 5. Estrous synchronization with natural breeding can produce calves earlier in the calving season that will be heavier at weaning and have enhanced carcass values. Calves will be more uniform in age at weaning. Estrous synchronization also improves calf crop genetics when superior AI sires are used. Maximum services from veterinary personals at a time.
  • 6. hormones Commercial names GnRH Cystorelin速, Factrel速, Fertagyl速, OvaCyst速 PG estroPLAN速, Estrumate速, In-Synch速, Lutalyse速, ProstaMate速 progesteron MGA速 (melangestrol acetate), CIDR速 (progesterone
  • 7. A variety of estrous synchronization protocols are available. Protocols differ in hormones used, method of hormone administration (injection, vaginal insert, or consumption through feed), number of injections, number of times cattle must be handled, timing of injections, and heat detection requirements. The cost of each protocol depends on the products used and labor needed.