Slaucamo govju piena produktivitātes un mūža garuma izmaiņas LLU MPS „Vecauce” | The changes of milk productivity and longevity of cows in LLU Research and Study Farm „Vecauce”
2015
Cielava, L., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture. Inst. of Agrobiotechnology | Jonkus, D., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture. Inst. of Agrobiotechnology | Paura, L., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture. Inst. of Agrobiotechnology
Cow milk productivity and longevity is one of the most important traits in dairy farming. In our study we obtained information about Latvian brown and Holstein black and white cows located in LLU Research and Study Farm „Vecauce”. Data was obtained about 1706 culled dairy cows from which 1563 were Latvian brown and 143 were Holstein black and white cattle. Data was distributed in 7 different time groups to see the changes in productivity in different time periods. Productivity of Latvian brown cows in time period from year 2001–2015 increased. Milk protein content in Latvian brown breed group increased by 0.99% in time of 12 years. In time period from 2001–2015 selective culling and culling connected with different cow health issues was performed in „Vecauce”. Significantly longer life was in Latvian brown cow group, which was culled in average 1.3 years later than Holstein black and white cattle.
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