The Influence of Automatic Milking Machines with Individual Production Recording on Milk Yield and Milk Quality in Dairy Goats
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Abstract
This study investigated the influence of an individual milk yield recording automatic milking system (AMS) on milk production and milk quality in crossbred goats with 75% Saanen genetics. Ten lactating goats were used, at their second and third lactation stages, respectively. Milk samples were collected during the same production day across eight sampling events over a two-month period. Data were analyzed according to the characteristics of the experimental groups using descriptive statistics, including mean and standard deviation. The differences between the treatment and control groups were analyzed using independent t-tests. The results showed that the average milk yield from goats milked with the AMS was 671.6±224.82 g/head, which was significantly higher than the yield from manual milking (593.43±204.96 g/head) (p<0.05). Furthermore, the AMS significantly reduced the time required for milking, with an average milking time of 1.65±0.45 minutes/head, compared to 3.24±8.26 minutes/head for manual milking (p<0.05). In terms of milk quality, the fat percentage in milk obtained using the AMS was significantly higher than that obtained through manual milking (p<0.05). However, no statistically significant differences were observed in milk protein percentage, lactose percentage, somatic cell count, total solids, or solids-not-fat between the two milking methods. Microbiological analysis revealed a significant difference in coliform contamination between the two methods: milk from the AMS contained 600 cfu/ml of coliforms, while milk from manual milking contained only 1 cfu/ml (p<0.001). No Escherichia coli
(E. coli) was detected in milk obtained from both methods. In conclusion, the individual milk yield recording automatic milking system was effective in significantly increasing milk yield and reducing labor time. However, microbial contamination control remains a concern that requires further attention. In conclusion, using a goat milking machine instead of hand milking can improve the hygienic quality of the milk and increase work efficiency on the farm, especially for small-scale dairy goat farms.
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