MECHANICAL MILKING IN DONKEYS: EFFECTS OF PULSATOR FREQUENCY ON MILK PRODUCTION
D’Alessandro Angela Gabriella, Martemucci Giovanni
Strony: 64-69
Opublikowano: 1 Jan 2013
Wyświetlenia: 277
Streszczenie: Mechanical milking may be considered of crucial importance in order to achieve maximum milk production in donkey. The aim of this study was to test the effects of milking pulsator frequencies on milk yield and milking efficiency. Two groups of donkeys (n. 5) at the 3rd month of lactation, milked by mechanical milker thrice a day, corresponding to milking pulsator frequency of 90 and 120 cycles/min, were considered. At the 1400 h milking the donkeys were treated with oxytocin after the milking, and then milked again. Harvested milk and milking time were recorded. The pulsator frequency of 120 cycles/min increased the average daily milk yield (P<0.01) and milk harvested per day (+12%), in comparison to 90 cycles/min. The pulsator frequency of 120 cycles/min also affected the lower milking time (P<0.05) and resulted in the greater milking efficiency (69.0 vs. 55.3%; P<0.05) in respect to the total milk stocked in the udder as total cisternal and residual milk. The ultrasound scanning of the udders showed several pockets of ducts empting directly into the teat instead of a single cisternal cavity.
Słowa kluczowe: milking, donkey, milk, production
Cytowanie artykułu: D’Alessandro Angela Gabriella, Martemucci Giovanni. MECHANICAL MILKING IN DONKEYS: EFFECTS OF PULSATOR FREQUENCY ON MILK PRODUCTION. Journal of International Scientific Publications: Agriculture & Food 1, 64-69 (2013). https://www.scientific-publications.net/en/article/1002963/
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