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Vliv tělesné kondice na množství a složení mléka dojnic českého strakatého plemene skotu
Maňoušková, Iveta
This bachelor thesis focuses on the influence of body condition of dairy cattle to their milk production and the composition of milk. In each of 303 dairy cows, which were actually on the top of their lactation (between 60. and 90. day after calving), were individually valued their body condition with the 5-point BCS scale. The samples of milk from the monitoring of their performance were taken the same day. The observation was made in one year. The amount of milk and its composition was valued towards body condition, phase of lactation, lactation sequences, and month of monitoring (microclimate in stable). In monitoring the influence of body condition to their production of milk and its composition was finded out, that the condition of dairy cattle has highly evidential negative relationship to the milk efficiency. The relationship between body condition, the volume of fat, protein and lactose in milk was not proved. About the amnout and composition of milk considering lactation sequences was proved highly evidential relationship between the lactation sequences (mainly the first lactation) and the amount of milk. Relationship between the volume of fat, protein, and lactose was not proved. In case of the relationship between the amount of milk and its composition in particular phases of lactation (between 60. and 90. day after calving) was finded out inconclusive influence to the amount of milk such as the volume of fat, protein and lactose. During the monitoring in each months in the year (microclimate in stable) to the amount and the composition of milk was finded out inconclusive relationship to the milk production, volume of fat, protein and lactose in milk.
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