Reproductive efficiency traits and viability of calves of Mpwapwa cattle and their crosses
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Date
1988
Journal Title
Journal ISSN
Volume Title
Publisher
Sokoine University of Agriculture
Abstract
Fifteen years data on reproductive traits and viability of
calves were analysed.
Data were collected from cattle records
at Livestock Production Research Institute, Mpwapwa, in Central
Tanzania.
The reproductive traits studied were age at first calving,
calving interval (CI), dry period (DP), days open and conception
rate (CR)., The genetic groups in the study were Mpwapwa, F^-crossline
and Backcross having 8.0%, 54.0% and 31.0% Bos taurus genetic propor-
tion, respectively.
The objectives of the study
were to evaluate
the influence of genetic and environmental factors on reproductive
traits and viability of calves, to estimate repeatabilities for
reproductive efficiency traits (CI, DP and days open) and to
.evaluate the relationship between reproductive traits and milk
production traits.
Overall mean age
Description
Masters Dissertation
Keywords
Reproductive efficiency, Traits and viability, Mpwapwa cattle