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.: Home > Animal Science Papers and Reports > 2009 > Volume 27 Number 4 > Nina Strza³kowska*, Artur Jَںwik, Emilia Bagnicka, Jَzef Krzy؟ewski, Karina Horbaٌczuk, Bo؟ena Pyzel, Jaroslaw Olav Horbaٌczuk

Chemical composition, physical traits and fatty acid profile of goat milk as related to the stage of lactation

Nina Strza³kowska*, Artur Jَںwik, Emilia Bagnicka, Jَzef Krzy؟ewski, Karina Horbaٌczuk, Bo؟ena Pyzel, Jaroslaw Olav Horbaٌczuk
Polish Academy of Sciences Institute of Genetics and Animal Breeding, Jastrzêbiec, 05-552 Wَlka Kosowska, Poland
Abstract :

The chemical composition and physical traits (selected) of milk, and fatty acid profile of milk fat
were determined throughout the progress of lactation II in 20 Polish White Improved goats. From
October to May goats were fed corn silage, hay and carrot ad lib., concentrate according to their
milk yield, with mineral and vitamin premix, chalk and NaCl. From June to September hay was
substituted by fresh grass. The diets were balanced according to INRA feeding standards. Milk
samples were taken from each goat on lactation day 60, 120 and 200 (lactation stage 1, 2 and 3,
respectively). With the progress of lactation highly favourable changes took place in the most
desirable monounsaturated (MUFA) and polyunsaturated (PUFA) fatty acids content of a total of
fatty acids. The coefficients of the calculated Pearson’s correlation showed that the concentration
of MUFA and PUFA (including conjugated linoleic acid – CLA) which are most desirable from the
nutritive point of view, is negatively correlated with the daily milk yield.

Keywords :
fatty acids /goats / milk / lactation

Date Deposited : 06 Aug 2011 10:31

Last Modified : 06 Aug 2011 10:31

Official URL: http://www.ighz.edu.pl/

Volume 27, Number 4, - 2009

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