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001-es BibID:	BIBFORM091070
Első szerző:	Petróczki Flóra Mária (élelmiszer-biztonsági és -minőségi mérnök)
Cím:	The effect of breed and number of lactation on the microbiological quality of raw milk = a fajta és a laktáció számának hatása a nyerstej mikrobiológiai minőségére / Petróczki Flóra Mária, Béri Béla, Peles Ferenc
Dátum:	2019
Megjegyzések:	In this study, our aims were to determine whether there was a difference in the microbiological quality of the milk collected from primiparous and multiparous cows, and whether there was a difference between the microbiological quality of milk of two different cow breeds (Holstein Friesian and Jersey) kept and milked under similar conditions. The effect of the two factors was examined separately in two dairy farms. Raw milk samples were analysed between May 2018 and March 2019. During the conducted studies, the total plate count (TPC), the coliform count, and the Staphylococcus aureus count of the samples were determined. TPC was 3.41?0.50 lg cfu/ml in the milk collected from primiparous cows and 3.42?0.65 lg cfu/ml in the milk collected from multiparous cows. The difference was not significant (P>0.05). However, in the milk of multiparous cows, the mean coliform count (1.58?0.97 lg cfu/ml) was significantly higher (P<0.05) than in the milk of primiparous cows (0.80?0.61 lg cfu/ml). S. aureus occurred only in milk of multiparous cows. There was no significant difference (P>0.05) between the mean TPC and coliform count detected in the milk of the Holstein Friesian and Jersey cows. S. aureus was detected in only two of the twenty and in three of the eighteen milk samples taken from Holstein Friesian and Jersey cows. According to the results, it can be concluded that higher coliform and S. aureus count could be detected in the milk collected from multiparous cows than in the samples taken from the primiparous cows in Farm "A". The fact that in the samples taken from multiparous cows the microorganisms could be detected in a higher colony count may be related to the fact that teats could be damaged during lactations by the milking machine, which increased the chance of invading the microorganisms into the udder. Our results also show that in the case of TPC and coliform bacteria, the colony count does not differ significantly in the milk of the examined breeds.
ISBN:	978-963-396-129-2
Tárgyszavak:	Agrártudományok Állattenyésztési tudományok előadáskivonat könyvrészlet cow breed number of lactation microbiology coliform bacteria Staphylococcus aureus
Megjelenés:	Innovation challenges in the 21st century : LXI. Georgikon Napok International Scientific Conference : abstract volume / eds. Gábor Pintér, Szilvia Csányi, Henrik Zsiborács. - p. 85. -
További szerzők:	Béri Béla (1951-) (agrármérnök) Peles Ferenc (1979-) (mikrobiológia, élelmiszer-mikrobiológia, minőségügy)
Pályázati támogatás:	EFOP-3.6.3-VEKOP-16-2017-00008 EFOP
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
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