ESTIMATION OF COW BONES BEFORE MILKING AND AFTER IN CONCERN OF LOW ADAPTATION

Abstract

The authors estimate resource abilities of the cow bones in the pregnancy period, lactation period of “low lactation” before morning milking and after. They used ultrasound osteometry, morphometric measurements and blood testing. The researchers applied ultrasound osteometry in the fifth tail vertebra, mid-ribs and metacarpal. Morphometric measurements relate to the length, width, thickness of vertebra and length, width, thickness and metacarpus circle. The authors defined total calcium concentration, total magnum, inorganic phosphorus and alkaline phosphatase in blood plasma. The experiment was carried out 12 times a day in 2 hours during 3–6 days and 6 months. The researchers applied cluster analysis and divided animals into 3 groups: animals with high adaptation, mid adaptation and low adaptation. The paper explores cows with “low adaptation” and applies system analysis. This contributed to investigating the ideal system where 11 morpho-metric and biophysical parameters are formed into self-developing system, which contains 3 subsystems as two-tiered pyramid before milking and after. The authors make a hypothesis about pyramid tiers, which reflect the main problems in the cow bones: bone tissue→ bones → bones system. The article is concerned with animals with “low adaptation” in the system of “morphometric and biophysical parameters” where the tier bones → bones system is observed before milking and tier bone tissue → bones is observed after milking. The research declares that milking influences system displacement and leads to lower bone structures; “bones” become subsystem principal instead of “bones system”. The authors make conclusion about relation between cow adaptive abilities and losses in structural properties of cow bones, burden on some bones and as a result bone pathology.