Abstract
The study was conducted to investigate the effects of non-genetic factors on Milk production traits of pure Jersey dairy cattle semi-intensively managed at on station. A total of 2912 records from pure Jersey dairy cattle were collected from 1986 to 2019 and analysed by (SAS, version 9.0). The overall least squares mean (LSM±SE) for lactation milk yield (LMY), daily milk yield (DMY) and lactation length (LL) were 2166.10±26.71 Litres, 6.37±0.05 Litres and 344.89±3.81 days, respectively. Lactation milk yield (LMY), daily milk yield (DMY) and lactation length (LL) were influenced by non-genetic factors such as animal group, year and parity. But, milk production traits were not affected by calving season. Knowledge on the effect of these non-genetic factors on milk production traits would help in making management decisions for improvement of the herds. Keywords : Milk, non-genetic factors, pure Jersey cows DOI: 10.7176/FSQM/103-02 Publication date: December 31 st 2020
Highlights
Ethiopia is one of the developing countries in Africa known with a huge livestock population
The estimated total cattle population for the country is about 61.59 million constituting of male (44.77%) and female (55.23%)
The farm had been engaged in the production and rearing of pure Jersey breed from the foundation stock for milk supply for dairy development enterprises and serve as a bull dam station for the national artificial insemination center (NAIC)
Summary
Ethiopia is one of the developing countries in Africa known with a huge livestock population. The estimated total cattle population for the country is about 61.59 million constituting of male (44.77%) and female (55.23%). Out of the total cattle population in the country, the proportions of indigenous breeds are 97.66 % and the remaining hybrid and exotic breeds are about 2.00% and 0.34%, respectively (CSA 2019/2020). The demands for dairy products are estimated to increase substantially as the human population increase in Ethiopia. In response to the increasing demand for dairy products, the Ethiopian government has been efforted to improve productivity in the livestock sector, through intensive husbandry with cross and exotic breeds (Million and Tadelle 2003; Firdessa 2012). The dairy sector in Ethiopia is still not developed compared to east African countries like Kenya, Tanzania and Uganda (Hunduma 2013)
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