*4.1.2 Diseases and disease conditions*

 Disease has a lot of impact, including a decline in productivity in livestock [84]. High infectious animal diseases, such as foot-and-mouth disease (FMD), hemorrhagic septicemia (HS), mastitis, peste des petits ruminant (PPR), and surra, cause irreparable economic losses for agricultural communities [85]. Ketosis is one of the diseases that causes lower milk production and an increased risk for developing other metabolic and infectious diseases which further affect milk properties [86]. There are many other factors especially environmental which affects production and properties of milk [87]. Mastitis is considered the most frequent health disorder in dairy farms. Decrease in milk components is one of the major origins of these economic losses both for clinical and subclinical infections [88]. These milk components are used as indicators of the metabolic status of cattle. The most relevant parameters of milk explain the balance of energy, protein, mineral, and acid-base balance and their standard concentrations and trends associated with various types of metabolic disorders. A comprehensive result of changes in the composition of milk can be used to identify early health problems. These changes in composition may help in protective cure of diseases [73].

*Reconnoitering Milk Constituents of Different Species, Probing and Soliciting Factors… DOI: http://dx.doi.org/10.5772/intechopen.82852* 
