TY  - JOUR
T1  - Feeding Lactating Holstein Cows a Lipid Source High in Palmitic Acid Changes the Fatty Acid
Composition and Thermal Properties of Lipids in Milk and Butter
AU - De Peters, E.J. AU - Chamberlain, M.B. AU - Veltri, B.C. AU - Taylor, S.J. AU - Pareas, J.W. AU - Jimenez-Flores, R. AU - Juchem, S.O. 
JO  - Research Journal of Dairy Sciences
VL  - 8
IS  - 1
SP  - 1
EP  - 12
PY  - 2014
DA  - 2001/08/19
SN  - 1993-5277
DO  - rjdsci.2014.1.12
UR  - https://makhillpublications.co/view-article.php?doi=rjdsci.2014.1.12
KW  - Fatty acid
KW  -milk fat
KW  -phospholipid
KW  -palmitic acid
KW  -triacylglycerol
AB  - The aim was to determine the impact of feeding
either low or high palmitic acid supplemental fat to
lactating Holstein cows on milk yield and composition, as
well as changes in thermal properties of the milk fat.
This study used a new dietary lipid supplement,
Energizer-RP10® (IFFCO, Johor, Malaysia) which was
commercially available and a source of unesterified fatty
acids. There are numerous studies in the published
literature reporting the impact of dietary lipids high in
palmitic acid on animal performance but few reports
determined the impact on the thermal properties of the
milk fat produced. Cows fed the HP diet showed higher
fat content and produced more fat-corrected milk.
Concentration of palmitic acid in milk was higher for high
palmitic than low palmitic. Textural analysis of butter
showed that anhydrous milk fat from high palmitic was
harder at both ambient and 10°C temperatures compared
with low palmitic. Temperatures at onset to melting and
peak of melting of butter from high palmitic were higher
than low palmitic. Feeding a high palmitic acid
supplement to lactating cows changed the FA composition
of milk lipids and modified their functional property that
was illustrated by a harder butter. The implications are
that feeding lipid supplements high in palmitic acid could
impact the physicochemical properties of dairy products,
butter in particular but also, potentially other dairy
products that contain milk fat.
ER  -