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Intranasal Immunization and Milk Collection in Studies of Maternal Immunization in New Zealand White Rabbits (Oryctolagus cuniculus)
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Factors effecting reproductive performance in Rwandan cattle.

Hannah Bishop1, Dirk Pfeiffer

  • 1Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, Hertfordshire AL9 7TA, UK. hbishop@rvc.ac.uk

Tropical Animal Health and Production
|May 17, 2008
PubMed
Summary

Reproductive performance in Rwandan cattle is poor, with many cows experiencing anoestrus. Improved husbandry practices and farmer training are crucial for enhancing cattle reproduction and productivity.

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Area of Science:

  • Animal Science
  • Reproductive Biology
  • Livestock Management

Background:

  • Rwandan cattle reproductive performance is not well-documented.
  • Husbandry practices significantly influence livestock productivity.
  • Understanding factors affecting reproduction is key for improving cattle farming in Rwanda.

Purpose of the Study:

  • To evaluate the reproductive efficiency of Ankole and Crossbreed cattle in Rwanda.
  • To identify the impact of various husbandry and management practices on cattle reproduction.
  • To provide data-driven recommendations for enhancing cattle breeding programs.

Main Methods:

  • A study involving 150 Ankole and Crossbreed cattle from 87 farms.
  • Rectal examinations for pregnancy and ovarian assessment.
  • Body Condition Scoring (BCS) on a scale of 1-5.
  • Farmer questionnaires on husbandry and management practices.

Main Results:

  • Mean age at puberty: 27.7 months; Parturition to first oestrus interval: 8.7 months; Calving index: 16.8 months.
  • 44% of cows were anoestrus; Crossbreds reached puberty earlier than Ankole cattle (p < 0.05).
  • Poor BCS (< 2.5) increased anoestrus likelihood (p < 0.01); increased weaning age correlated with a higher calving index (p < 0.001).

Conclusions:

  • Rwandan cattle exhibit suboptimal reproductive performance.
  • Husbandry practices, farmer experience, and training are critical factors.
  • Targeted interventions in management and nutrition can improve reproductive outcomes.