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Related Experiment Video

Updated: Jan 13, 2026

In Vitro Culture Strategy for Oocytes from Early Antral Follicle in Cattle

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Published on: July 8, 2020

Typical repeat breeding and its improvement in buffaloes.

I F Marai¹, A A el-Darawany, A S Nasr

¹Department of Animal Production, Faculty of Agriculture, Zagazig University, Egypt.

Beitrage Zur Tropischen Landwirtschaft Und Veterinarmedizin

|January 1, 1992

Summary

Repeat breeding in buffaloes, a common issue, was studied. Supplementation with sodium phosphate and zinc acetate significantly improved conception rates in affected animals.

Area of Science:

Veterinary Science
Animal Reproduction
Buffalo Husbandry

Background:

Repeat breeding syndrome in buffaloes presents diagnostic challenges.
Limited research exists on the specific factors contributing to repeat breeding in buffalo populations.

Purpose of the Study:

To investigate the incidence and characteristics of repeat breeding in buffaloes.
To identify physiological and metabolic markers associated with repeat breeding.
To evaluate the efficacy of mineral and phosphate supplementation for improving conception rates.

Main Methods:

Identified repeat breeder buffaloes inseminated 3+ times per lactation.
Analyzed correlations between services per conception, birth weight, and first service weight.
Compared serum biochemical profiles (creatinine, albumin, glucose, phosphate, zinc) and urinary progesterone levels between repeat breeders and normal buffaloes.

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Administered dietary sodium phosphate and drinking water zinc acetate to repeat breeders for one month.

Main Results:

Repeat breeders constituted 8.33% of the herd, exhibiting longer lactation periods and more services per conception.
Significant correlations were found between services per conception and birth/first service weights.
Repeat breeders showed elevated creatinine and lower serum albumin, glucose, inorganic phosphate, and zinc compared to controls.
Urinary efficacious progesterone was lower, and non-efficacious progesterone was higher in repeat breeders.
Supplementation increased conception rates by 80%.

Conclusions:

Repeat breeding in buffaloes is linked to specific metabolic and hormonal profiles.
Mineral and phosphate supplementation offers a viable strategy to enhance reproductive efficiency in repeat breeder buffaloes.