Immunization against Gonadotropin-Releasing Hormone in Female Beef Calves to Avoid Pregnancy at Time of Slaughter

Schütz, Julia; Rudolph, Jürn; Steiner, Adrian; Rothenanger, Esther; Hüsler, Jürg; Hirsbrunner, Gaby (2021). Immunization against Gonadotropin-Releasing Hormone in Female Beef Calves to Avoid Pregnancy at Time of Slaughter. Animals, 11(7), p. 2071. MDPI 10.3390/ani11072071

[img]
Preview
Text
Immunization_against_Gonadotropin-Releasing.pdf - Published Version
Available under License Creative Commons: Attribution (CC-BY).

Download (173kB) | Preview

Precociousness of heifers kept in mixed beef herds with young and adult bulls leads to unwanted pregnancies. Inbreeding, premature calving followed by dystocia and a high stillbirth rate are the consequences. As an alternative, such heifers are slaughtered during the resulting pregnancy. The slaughtering of pregnant animals is an ethical problem, which is strongly criticized by consumers and animal welfare organizations. Therefore, the aim of this study was to postpone puberty in female beef calves housed in Swiss mixed herds to avoid pregnancy until scheduled slaughter at 11 months of age. We used a vaccine (Improvac®) that induces antibody production against sexual hormones, thereby suppressing the reproductive cycle. Monthly progesterone analysis in blood was performed to decide whether the cycle had already started. The results proved, that vaccinated female beef were not coming in heat until 11 months of age compared to the unvaccinated control group, which came in heat earlier. In conclusion, vaccination with Improvac® is an animal-friendly, non-invasive and reliable method to avoid early pregnancy in heifers as well as the slaughter of pregnant cattle.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Mathematics and Statistics > Institute of Mathematical Statistics and Actuarial Science
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV)
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > Clinic for Ruminants

UniBE Contributor:

Steiner, Adrian; Hüsler, Jürg and Hirsbrunner, Gabriela

Subjects:

300 Social sciences, sociology & anthropology > 360 Social problems & social services
500 Science > 510 Mathematics
500 Science > 590 Animals (Zoology)
600 Technology > 630 Agriculture

ISSN:

2076-2615

Publisher:

MDPI

Language:

English

Submitter:

Nathalie Viviane Zollinger

Date Deposited:

05 Aug 2021 11:20

Last Modified:

05 Dec 2022 15:52

Publisher DOI:

10.3390/ani11072071

BORIS DOI:

10.48350/157768

URI:

https://boris.unibe.ch/id/eprint/157768

Actions (login required)

Edit item Edit item
Provide Feedback