The daily distribution of milkings of cows in farms equipped with the automatic milking system

• Autorzy: Piwczynski D. , Sitkowska B. , Aerts J. , Kolenda M.

Warianty tytułu

PL

Dobowy rozkład dojów krów w gospodarstwie wyposażonym w automatyczny system doju

• Języki publikacji: EN

Abstrakty

EN

The material of the study consisted of 140 cows of PHF breed, reared in the farm equipped with the automatic milking system (AMS). Cows in different lactations (from 1 to 5) were reared in the period from May 2011 to April 2013. The daily distribution of milkings (12, two-hours periods) was analyzed according to: cows’ age (primiparous and multiparous), the average milk production per milking during the whole lactation (<12.5 kg, ≥12.5 kg) and season (spring, summer, autumn, winter). The statistical analysis was conducted with the use of the χ2 independence test. It was noted that the daily distribution of milkings was statistically conditioned by all analyzed factors. The first peak of the increased milking frequency was obtained during midday hours and the next one during late night hours, i.e. during hours that are generally different from the typical milking hours in farms that do not use AMS. The lowest milking frequency was recorded during milking hours typical for farms that do not use the AMS.

PL

Badaniami objęto grupę 140 krów będących w laktacjach od 1 do 5, rasy PHF, utrzymywanych w gospodarstwie wyposażonym w automatyczny system doju. Dobowy rozkład dojów (12 dwugodzinnych okresów) analizowano w zależności od: wieku zwierząt (pierwiastki i wieloródki), przeciętnej ilości oddawanego mleka w doju w czasie całej laktacji (<12,5 kg, ≥12,5 kg) i pory roku (wiosna, lato, jesień, zima). Statystyczną analizę danych przeprowadzono za pomocą testu niezależności X2. Stwierdzono, że dobowy rozkład dojów warunkowany był statystycznie wpływem wszystkich analizowanych czynników. Pierwszy szczyt wzmożonej częstotliwości oddawania mleka przypadał na godziny południowe, zaś kolejny na późnowieczorne, tj. na godziny na ogół odmienne od typowych godziny doju w gospodarstwach niekorzystających z automatycznego systemu doju. Najmniejszą aktywność krów w zakresie częstotliwości doju rejestrowano w typowych godzinach doju gospodarstw, które nie korzystają z automatycznego systemu doju.

Słowa kluczowe

EN

milking; automatic milking; daily distribution; cow; cattle; animal farm; farm; automatic system; milking system

• Wydawca: -
• Czasopismo: Acta Scientiarum Polonorum. Zootechnica
• Rocznik: 2013
• Tom: 12
• Numer: 4
• Opis fizyczny: p.61-70,fig.,ref.

Twórcy

autor

Piwczynski D.

• Department of Genetics and General Animal Breeding, University of Technology and Life Sciences in Bydgoszcz, Mazowiecka 28, 85-084 Bydgoszcz, Poland

autor

Sitkowska B.

• University of Technology and Life Sciences in Bydgoszcz, Bydgoszcz, Poland

autor

Aerts J.

• Lely East Ltd, Biale Blota, Poland

autor

Kolenda M.

• University of Technology and Life Sciences in Bydgoszcz, Bydgoszcz, Poland

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