Reproductive performance of postpartum anoestrous dairy cows treated with progesterone and oestradiol benzoate

Authors: Burton LJ, Xu ZZ
Publication: New Zealand Veterinary Journal, Volume 45, Issue 5, pp 213-214, Oct 1997
Publisher: Taylor and Francis

Animal type: Cattle, Livestock, Production animal, Ruminant
Subject Terms: Oestrus/oestrous, Reproduction - female, Reproduction, Reproduction - hormones, Treatment/therapy, Animal remedies/veterinary medicines, Endocrine/autocrine/paracrine, Parturition
Article class: Correspondence

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Abstract: Recent studies have shown that the anoestrous condition of post-partum dairy cows can be treated with a combination of progesterone (for 5-7 days) and oestradiol benzoate (ODB, 1 mg injected at 24 or 48 h after termination of the progesterone treatment). However, published data on the performance of this anoestrus treatment programme in commercial dairy herds is limited. During the 1994-95 and 1995-96 breeding seasons, performance of this anoestrus treatment programme was determined in nine and six spring-calving herds, respectively. In each herd, cows that had not been detected in oestrus using the tailpainting technique by Day -7 (Day 0 = start of the breeding season) were examined per rectum by each herd owner`s attending veterinarian for the presence of a palpable corpus luteum (CL) on the ovary. Cows with a palpable CL or with an enlarged or infected uterus were excluded. Throughout the trial period, anoestrous cows were managed together with the cycling cows. All anoestrous cows were treated with…

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