The cost of replacement heifers was assumed to be the same for both breeds (£1,300: DAERA, 2020). Total outputs (£/cow per yr) were determined as the value of milk, calves, and cull cows sold, less the annual replacement charge. Variable costs included in the analysis consisted ...
Drivers of change in dairy herd health management include the significant increase in herd/farm size, quota removal (within Europe) and the increase in technologies to aid in dairy cow reproductive management. There are a number of key areas for improvin
However, few consistent specific conclusions can be drawn from these reported results because of the variables in breeds, diet, milking period, sampling size, and so on. The 16S rRNA gene amplicon sequencing has become an important method to study the composition of bacterial communities in ...
Nitrogen utilization metrics were derived from milk and body weight records from 1,291 grazing dairy cows of multiple breeds and crossbreeds; all cows had sporadic information on nitrogen intake concurrent with information on nitrogen sinks (and other nitrogen sources, such as body tissue mobilization...
Joint analysis of quantitative trait loci for clinical mastitis and somatic cell score on five chromosomes in three Nordic dairy cattle breeds. J Dairy Sci. 2007; 90(11):5282–90. 9. Lund M, Guldbrandtsen B, Buitenhuis A, Thomsen B, Bendixen C. Detection of quantitative trait loci in ...
In the datasets analysed in the present study, the most significant module associated with RFI differed between the Holstein and Jersey breeds. Furthermore, these modules were enriched for different sets of biological processes. This evidence suggests that the Holstein cow system is more reactive towa...
specific conclusions can be drawn from these reported results because of the variables in breeds, diet, milking period, sampling size, and so on. The 16S rRNA gene amplicon sequencing has become an important method to study the composition of bacterial communities in environmental samples11,12. ...
for most breeds of dairy cattle. The majority of dairy cattle in Mississippi are either Holstein or Jersey; the charts below illustrate optimal growth rates for these breeds. Information on other breeds can be obtained from the Department of Animal and Dairy Sciences at Mississippi State University...
Since high-yielding breeds are more prone to inflammation, higher losses in milk production are recorded, as shown by Bronzo et al. [8]. The reduced synthetic activity of the infected mammary gland is also manifested by changes in the content of milk constituents and its physicochemical propertie...