Nauka Przyroda Technologie

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Sylwia Bielińska-Nowak, Jacek Wójtowski, Piotr Ślósarz, Maria Markiewicz-Kęszycka
Relationship between teat morphology and microbiological quality of sheep milk
Summary.

The aim of the study was to assess the size of the udder and morphological changes in ewe’s teats, as well as relationship of these features with microbiological quality of milk. The examinations of morphological structures of ewe’s teats were performed with 10 MHz ultrasound linear probe. The experiment was conducted on 40 dairy sheep, in three consecutive calendar years. To clarify the correlation between total bacteria count, teat morphology and size of the udder, the results of determination of the microbiological quality of milk were grouped in four ranges: total bacteria count < 50 000, 50 000-100 000, 100 000-200 000 and > 200 000 in 1 cm3 of milk. The width of the udders increased with increasing concentration of total bacteria count (p < 0.001). The widest udders were observed in sheep with the highest total bacteria count concentration – up to 200 000 of bacteria in 1 cm3 of milk: 122.7 mm. With increasing concentration of total bacteria count in milk, decreased udder height (p < 0.001). The smallest height of udder was found in ewes producing milk of the lowest microbiological quality (p < 0.001). The experiment showed no statistically significant correlations between teat’s length, width, morphological structures and total bacteria count (p > 0.05). Therefore, the application of these features in a rapid evaluation of the microbiological quality of sheep milk is unusable.

 

Key words: sheep, ultrasonography, teat, udder, milk, microbiological quality
PDFFull text available in Polish in Adobe Acrobat format:
http://www.npt.up-poznan.net/tom6/zeszyt4/art_67.pdf

For citation:

MLA Bielińska-Nowak, Sylwia, et al. "Budowa morfologiczna sutka owiec a jakość mikrobiologiczna ich mleka." Nauka Przyr. Technol. 6.4 (2012): #67.
APA Sylwia Bielińska-Nowak1, Jacek Wójtowski1, Piotr Ślósarz1, Maria Markiewicz-Kęszycka2 (2012). Budowa morfologiczna sutka owiec a jakość mikrobiologiczna ich mleka. Nauka Przyr. Technol. 6 (4), #67
ISO 690 BIELIńSKA-NOWAK, Sylwia, et al. Budowa morfologiczna sutka owiec a jakość mikrobiologiczna ich mleka. Nauka Przyr. Technol., 2012, 6.4: #67.
Corresponding address:
Sylwia Bielińska-Nowak
Katedra Hodowli Małych Ssaków i Surowców Zwierzęcych
Uniwersytet Przyrodniczy w Poznaniu
Złotniki
ul. Słoneczna 1
62-002 Suchy Las
Poland
e-mail: silka@up.poznan.pl
Accepted for print: 31.05.2012