Factors affecting pregnancy rate in Holstein-Friesian cattle mated during summer in a tropical upland environment.

@article{Orr1993FactorsAP,
  title={Factors affecting pregnancy rate in Holstein-Friesian cattle mated during summer in a tropical upland environment.},
  author={Wes Orr and R. Cowan and Tony Davison},
  journal={Australian veterinary journal},
  year={1993},
  volume={70 7},
  pages={
          251-6
        }
}
The relationships between some environmental factors and reproductive rates of dairy cattle during summer in a tropical upland area were studied using records for Holstein-Friesian milking cows and non-lactating growing heifers maintained at the Kairi Research Station on the Atherton Tableland in north Queensland. The Station is situated in a tropical upland environment with warm, wet summers and dry, cool winters. Data were collected over a 12-year-period (1977 to 1988) for cows grazing… CONTINUE READING

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