Naslov
Effect of duration of sequential teat cleaning by two rolling brushes on milking characteristics in a single stall automatic milking system

Autori
Džidić, Alen ; Bruckmaier, Rupert

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
J. Anim. Sci. 80, Suppl. 1/J. Dairy Sci. 85, Suppl. 1 No. 1120 / - Quebec : American Animal Science Association / American Dairy Science Association / Canadian Society of Animal Sciences, 2002

Skup
Joint ASAS / ADSA / CSAS Annual meeting

Mjesto i datum
Quebec, Kanada, 20.07.2002. - 25.07.2002

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Milking characteristics; AMS; Pre-stimulation

Sažetak
In automatic milking systems (AMS) teats are cleaned by water, towel or brush. The stimulatory effect of teat cleaning induces milk ejection. The goal of this study was to evaluate the effect of the number of cleaning cycles on milking characteristics in forty-eight German Fleckvieh cows milked in a single stall AMS (Merlin, Lemmer-Fullwood). Cows were randomly assigned to the treatments B0 (no brushing), B1 (1 brushing cycle for 16 s, 4 s per teat), B2 (2 brushing cycles), B4 (4 brushing cycles) and B6 (6 brushing cycles). Each treatment period lasted for two days. Quarter milk yield and milk flow was recorded during milking. Time needed for attachment of all four teat cups was similarly short in all treatments (19 to 23 s). Total milk yield and milk production rate (kg/h) did not differ between treatments. Milking time was prolonged (P<0.05) in all quarters in B0 as compared to the other treatments. Time from the start of cleaning until the end of milking was 6.8+/-0.2, 6.4+/-0.2 and 6.6+/-0.2 min with 0, 1 and 2 cleaning cycles, respectively, i.e. 1 and 2 cleaning cycles reduced the total time required for milking. Milking time was shorter in front (4.4+/-0.1 min) than in rear quarters (5.6+/-0.1 min). Peak and average milk flow rates were lower (P<0.05) in B0 than in all other treatments. Two cleaning cycles resulted in the highest peak flow rates (3.0+/-0.1 kg/min) as compared to the other treatments. In conclusion, duration of teat cleaning in AMS had a crucial influence on milking characteristics (milking time, peak and average milk flow rate). Optimal milk removal in most cows was observed after two cleaning cycles i.e. a pre-stimulation time of 32 s.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA