Improving reproductive performance in lactating dairy cows by synchronising ovulation or inducing oestrus

Gy Gábor, J. P. Kastelic, S. Pintér, F. Szász, Edit Szigeti, N. Solymosi

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Lactating crossbred Holstein-Friesian dairy cows (n = 331) were started on an Ovsynch regimen 68 ± 8.2 days after calving; 200 μg GnRH intramuscularly (i.m.) on Days 0 and 9, and 35 mg prostaglandin F i.m. on Day 7. Thirty-eight and 31 cows (11.5 and 9.4%, respectively) were in oestrus on Days 0 to 6 and 7 to 8, respectively, and inseminated, and the remainder were fixed-time inseminated (on Day 10). For these three groups, pregnancy, rates (60-65 days after breeding) were 31.6, 38.7 and 34.0%, respectively (P = 0.82) and calving rates were 100, 100 and 89.9% (P = 0.23). In a preliminary trial, twelve lactating cows (45 to 60 days postpartum) with inactive ovaries were given 1500 IU eCG i.m.; 10 were in oestrus within 10 days after treatment (and inseminated) and eight of these were pregnant (30 days after breeding). The Ovsynch program resulted in acceptable reproductive performance in cyclic cows and eCG treatment has considerable promise for inducing oestrus in anoestrous cows.

Original languageEnglish
Pages (from-to)231-234
Number of pages4
JournalActa Veterinaria Hungarica
Volume50
Issue number2
DOIs
Publication statusPublished - 2002

Fingerprint

Estrus
Ovulation
ovulation
estrus
reproductive performance
dairy cows
cows
Breeding
Dinoprost
Pregnancy Rate
calving rate
Gonadotropin-Releasing Hormone
Postpartum Period
Ovary
breeding
pregnancy rate
prostaglandins
calving
crossbreds
Holstein

Keywords

  • Lactating dairy cows
  • Oestrus induction
  • Ovsynch regimen
  • Reproductive performance
  • Synchronisation of ovulation

ASJC Scopus subject areas

  • veterinary(all)

Cite this

Improving reproductive performance in lactating dairy cows by synchronising ovulation or inducing oestrus. / Gábor, Gy; Kastelic, J. P.; Pintér, S.; Szász, F.; Szigeti, Edit; Solymosi, N.

In: Acta Veterinaria Hungarica, Vol. 50, No. 2, 2002, p. 231-234.

Research output: Contribution to journalArticle

Gábor, Gy ; Kastelic, J. P. ; Pintér, S. ; Szász, F. ; Szigeti, Edit ; Solymosi, N. / Improving reproductive performance in lactating dairy cows by synchronising ovulation or inducing oestrus. In: Acta Veterinaria Hungarica. 2002 ; Vol. 50, No. 2. pp. 231-234.
@article{7f50b6d2427b4738be518cb00119cccb,
title = "Improving reproductive performance in lactating dairy cows by synchronising ovulation or inducing oestrus",
abstract = "Lactating crossbred Holstein-Friesian dairy cows (n = 331) were started on an Ovsynch regimen 68 ± 8.2 days after calving; 200 μg GnRH intramuscularly (i.m.) on Days 0 and 9, and 35 mg prostaglandin F2α i.m. on Day 7. Thirty-eight and 31 cows (11.5 and 9.4{\%}, respectively) were in oestrus on Days 0 to 6 and 7 to 8, respectively, and inseminated, and the remainder were fixed-time inseminated (on Day 10). For these three groups, pregnancy, rates (60-65 days after breeding) were 31.6, 38.7 and 34.0{\%}, respectively (P = 0.82) and calving rates were 100, 100 and 89.9{\%} (P = 0.23). In a preliminary trial, twelve lactating cows (45 to 60 days postpartum) with inactive ovaries were given 1500 IU eCG i.m.; 10 were in oestrus within 10 days after treatment (and inseminated) and eight of these were pregnant (30 days after breeding). The Ovsynch program resulted in acceptable reproductive performance in cyclic cows and eCG treatment has considerable promise for inducing oestrus in anoestrous cows.",
keywords = "Lactating dairy cows, Oestrus induction, Ovsynch regimen, Reproductive performance, Synchronisation of ovulation",
author = "Gy G{\'a}bor and Kastelic, {J. P.} and S. Pint{\'e}r and F. Sz{\'a}sz and Edit Szigeti and N. Solymosi",
year = "2002",
doi = "10.1556/AVet.50.2002.2.12",
language = "English",
volume = "50",
pages = "231--234",
journal = "Acta Veterinaria Hungarica",
issn = "0236-6290",
publisher = "Akademiai Kiado",
number = "2",

}

TY - JOUR

T1 - Improving reproductive performance in lactating dairy cows by synchronising ovulation or inducing oestrus

AU - Gábor, Gy

AU - Kastelic, J. P.

AU - Pintér, S.

AU - Szász, F.

AU - Szigeti, Edit

AU - Solymosi, N.

PY - 2002

Y1 - 2002

N2 - Lactating crossbred Holstein-Friesian dairy cows (n = 331) were started on an Ovsynch regimen 68 ± 8.2 days after calving; 200 μg GnRH intramuscularly (i.m.) on Days 0 and 9, and 35 mg prostaglandin F2α i.m. on Day 7. Thirty-eight and 31 cows (11.5 and 9.4%, respectively) were in oestrus on Days 0 to 6 and 7 to 8, respectively, and inseminated, and the remainder were fixed-time inseminated (on Day 10). For these three groups, pregnancy, rates (60-65 days after breeding) were 31.6, 38.7 and 34.0%, respectively (P = 0.82) and calving rates were 100, 100 and 89.9% (P = 0.23). In a preliminary trial, twelve lactating cows (45 to 60 days postpartum) with inactive ovaries were given 1500 IU eCG i.m.; 10 were in oestrus within 10 days after treatment (and inseminated) and eight of these were pregnant (30 days after breeding). The Ovsynch program resulted in acceptable reproductive performance in cyclic cows and eCG treatment has considerable promise for inducing oestrus in anoestrous cows.

AB - Lactating crossbred Holstein-Friesian dairy cows (n = 331) were started on an Ovsynch regimen 68 ± 8.2 days after calving; 200 μg GnRH intramuscularly (i.m.) on Days 0 and 9, and 35 mg prostaglandin F2α i.m. on Day 7. Thirty-eight and 31 cows (11.5 and 9.4%, respectively) were in oestrus on Days 0 to 6 and 7 to 8, respectively, and inseminated, and the remainder were fixed-time inseminated (on Day 10). For these three groups, pregnancy, rates (60-65 days after breeding) were 31.6, 38.7 and 34.0%, respectively (P = 0.82) and calving rates were 100, 100 and 89.9% (P = 0.23). In a preliminary trial, twelve lactating cows (45 to 60 days postpartum) with inactive ovaries were given 1500 IU eCG i.m.; 10 were in oestrus within 10 days after treatment (and inseminated) and eight of these were pregnant (30 days after breeding). The Ovsynch program resulted in acceptable reproductive performance in cyclic cows and eCG treatment has considerable promise for inducing oestrus in anoestrous cows.

KW - Lactating dairy cows

KW - Oestrus induction

KW - Ovsynch regimen

KW - Reproductive performance

KW - Synchronisation of ovulation

UR - http://www.scopus.com/inward/record.url?scp=0036375194&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036375194&partnerID=8YFLogxK

U2 - 10.1556/AVet.50.2002.2.12

DO - 10.1556/AVet.50.2002.2.12

M3 - Article

C2 - 12113178

AN - SCOPUS:0036375194

VL - 50

SP - 231

EP - 234

JO - Acta Veterinaria Hungarica

JF - Acta Veterinaria Hungarica

SN - 0236-6290

IS - 2

ER -