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Research
(Published
online: 30-09-2014)
24.
Impact of applying hygienic practices at
farm on bacteriological quality of raw milk - N. Pandey,
A. Kumari, A. K. Varma, S. Sahu and M. A. Akbar
Veterinary World, 7(9): 754-758
doi:
10.14202/vetworld.2014.754-758
N.
Pandey: Department
of Livestock Production Management, Buffalo Research Centre,
College of Veterinary Science, Lala Lajpat Rai University of
Veterinary and Animal Science, Hisar - 125 004, Haryana, India;
siya97singh@gmail.com
A. Kumari:
Department of Livestock Production Management, Buffalo Research
Centre, College of Veterinary Science, Lala Lajpat Rai University
of Veterinary and Animal Science, Hisar - 125 004, Haryana, India;
anujsrkumari@gmail.com
A. K. Varma:
Department of Livestock Production Management, Buffalo Research
Centre, College of Veterinary Science, Lala Lajpat Rai University
of Veterinary and Animal Science, Hisar - 125 004, Haryana, India;
akvarma1954@gmail.com
S. Sahu:
Department of Livestock Production Management, Buffalo Research
Centre, College of Veterinary Science, Lala Lajpat Rai University
of Veterinary and Animal Science, Hisar - 125 004, Haryana, India;
subhasishsahu72@gmail.com
M. A. Akbar: Department of Livestock Production Management,
Buffalo Research Centre, College of Veterinary Science, Lala
Lajpat Rai University of Veterinary and Animal Science, Hisar -
125 004, Haryana, India;
drma.akbar@gmail.com
Received:
11-06-2014, Revised: 13-08-2014, Accepted: 22-08-2014, Published
Online: 30-09-2014
Corresponding author: S. Sahu,
e-mail: subhasishsahu72@gmail.com
Abstract
Aim:
The present study was carried out to explore the potential
source of contamination and the efficacy of different washing
practices towards quality milk production.
Materials and Methods: Probable sources of contamination
viz.
stored water, potable water, milker’s hands, milking
pail, udder of individual buffalo and milk cans were subjected to
different types of bacterial counts before the actual experiment
to start. Twenty milch buffaloes thereafter were divided randomly
into four treatment groups where washing was performed in each
step viz. milker hands, udder of individual buffalo,
milking pail and milk cans before milking either with water (T0:
stored water, T1: potable water) or sanitizers (T2:
200 ppm chlorine solution, T3: 50 ppm iodophore solution) for 60
days. Bacterial counts again were performed for last 5 alternate
days for all the sources involved along with the microbial load of
raw milk. Data obtained were subjected to standard statistical
analysis.
Results: It was found that for all bacterial
count stored water contributed significantly higher as compared to
the potable water. Among the other potential sources of
contamination (log/6 cm2), standard plate count (SPC) and coliform
count were significantly highest for milking pail (6.73±0.02) and
udder of milch buffaloes (3.77±0.12), respectively, while for
Staphylococci count both milking pail (3.24±0.02) and milking
can (3.22±0.04) were contributed maximally (p<0.05) than others.
Washing with stored water contributed significantly (p<0.05) more
microbial load from all possible sources of contamination and too
reflected on milk quality (SPC: 7.87±0.04, coliform: 4.06±0.46 and
Staphylococci: 3.41±0.01) than the other washing
treatments, which are followed by washing with potable water. Both
the sanitizers were significantly better than the washing with the
water but remained statistically similar (p>0.05) for most of the
parameters, even for the raw milk quality.
Conclusion: Study revealed that milker hands, milking pails,
udder of animals, milk cans and stored water used for washing of
equipment are the potential source of contamination in raw milk.
These were counted as critical point which needs attention for the
production of high-quality milk. Potable water was found to be
better than stored water. The use of either chlorine 200 ppm and
iodophor 50 ppm is highly effective in reducing the bacterial
population for quality milk production.
Keywords: milk, sanitizer, source of contamination, washing,
water.
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