IMPACT OF MILKING TECHNIQUE ON MILK PRODUCTION IN COWS

Abstract

The effect of manual stimulation on milking performance and on some parameters of milk production showed that the average milk production per milking was higher in animals with manual stimulation (12.3 kg) compared to the average milk production in animals without stimulation (12.0 kg).
At the same time, the average time per milking in animals with manual stimulation was 4.8 minutes, and in animals without stimulation it was 5.3 minutes (in addition 0.5 minutes). The compositional quality was not affected by the two treatments. There were also no significant differences between the means of fat or protein percentages. The average number of somatic cells in the milk of animals with manual stimulation was 197,000 cells/ml, and in animals without stimulation of 246,000 cells/ml of milk. An increase of 49,000 cells/ml can be observed in animals without stimulation, the difference in this case being significant (p< 0.05). The higher number of somatic cells in unstimulated animals is the result of not removing the first milk jets that contain the highest load of bacteria and somatic cells.
Regarding the milk flow, it is 2.56 kg/minute (average milking 1 + milking 2) in animals with stimulation and 2.26 kg/minute in animals without stimulation. The difference between the 2 means was + 0.30 kg/minute, being distinctly significant ( p < 0.01).
Regarding the influence of the standard milking routine on milking performance and milk production parameters, it must ensure a uniform treatment for each cow, at each milking, regardless of the stage of lactation, the number of lactations or the person performing the milking. Almost 15-25% of the total milk secreted by the mammary gland represents residual milk, also called complementary milk. In the research carried out in the animals of the first group, residual milk represented 15.48% of the total milk produced by the mammary gland and 14.72% in the animals of the second group.
The residual milk fat percentage was 9.38% in group 1 animals and 9.42% in group 2 animals.