Predominant Horn of Pregnancy in Cattle and Camel

Most of the pregnancies in cattle and camel are located respectively in:

Correct Answer: Right horn (cattle) and Left horn (camel)

In cattle, approximately 60% of pregnancies occur in the right uterine horn (due to the higher proportion of right-side ovulations from the right ovary being functionally dominant in most cycles). In the she-camel, the opposite is true — 99% of pregnancies are in the left uterine horn (the left ovary is functionally dominant in camels).

Summary by Species

• Cattle: ~60% right horn (right ovary more active)
• She-camel: 99% left horn (left ovary dominant)
• Mare: No significant horn preference

Practical Implication

During rectal palpation for pregnancy diagnosis in cattle, the examiner typically checks the right horn first. In camels, a pregnancy found in the right horn is unusual and the clinician should investigate for anatomical anomalies.