Jena et al.
on the available diagnostic tests are no less responsible
Science, Chomu, Jaipur during a period of 11 months
for increase in the incidence of mastitis (Ranjan et al .,
from June 2013 to May 2014. Cows which were tested
2010). However, the detection of mastitis is difficult.
under this study mostly belong to rural, peri-urban and
Clinical mastitis is confirmed by observation of clinical
suburban regions of Jaipur district of state of Rajasthan.
signs by the farmer (direct detection) (Hokmabad et al.,
The study area was found at and around 26.9260° N
2011). Subclinical mastitis can be recognized by indirect
longitude, 75.8235° E latitude with an altitude range of
detection: the somatic cell count in milk (Hokmabad et
431 m above sea level. Jaipur has a semiarid subtropical
al ., 2011) or by animal-side milk tests (Bachaya et al .,
climate, receiving over 650 millimetres (26 in) of rainfall
2011), but most of the farmers in Jaipur (rural), Rajasthan
annually only during the monsoon. The average daily
are not acquainted with these practices. Therefore it is
temperature is around 30°C during summer and 15-
indispensable to recognize and enumerate the causative
18°C during winter.
organisms to review the sufficiency of the therapeutic
armory, evade auxiliary complications and acclimatize
Animals
management practices for the efficient control of mastitis.
In the present study, a total number of 110 (440 quarters)
The purpose of this investigation was to elucidate the
apparently healthy cows without any clinical signs of
prevalence of subclinical mastitis in apparently healthy
mastitis were screened for SCM in and around Jaipur
dairy cows in rural, peri-urban and suburban regions of
District during the period of 11 months from June 2013
Jaipur district of state of Rajasthan, to find out the major
to May 2014. Animals were managed under extensive
causative agents causing subclinical mastitis and to study
and semi-intensive production system. The traditional
their drug sensitivity. The study was conducted on 110
extensive production system consists of indigenous
cows in the Jaipur rural region of state of Rajasthan, India.
breeds graze for feed with minor supplementations. On the
other hand, in the semi-intensive production system, the
MATERIALS AND METHODS
animals are mainly belongs to crossbred cattle. They are
reared indoors with occasional grazing in the field. They
Location
are supplemented with concentrates in addition to the
The study was conducted on randomly selected apparently
natural pasture, crop by products, straw. This type of dairy
healthy cows who visited Teaching Veterinary Clinical
husbandry system is booming and becoming an important
Complex, M.J.F. College of Veterinary and Animal
source of milk supplies to households, nearby Dairy plants
and a means of income generation in rural and peri-urban
Table 1 : Animal wise and quarter wise prevalence of subclinical mastitis detected by four screening tests.
95%
Sample
Positive
Prevalence
Chi-square
Tests used
Types
Confidence
P-value
tested
cases
(in %)
value
Intervals
California mastitis test
Animal wise
110
74
67.27
55.97-76.75
13.127
0.000*
(Score > 1+)
Quarter wise
440
174
39.55
34.25-44.89
19.236
0.000*
White side test
Animal wise
110
71
64.55
53.16-74.31
9.309
0.000*
(Score > 1+)
Quarter wise
440
171
38.86
33.59-44.20
21.827
0.000*
Surf field mastitis test
Animal wise
110
70
63.64
52.23-73.49
8.182
0.000*
(Score > 1+)
Quarter wise
440
167
37.95
32.71-43.28
25.536
0.000*
Somatic cell count
Animal wise
110
82
74.55
63.65-83.07
26.509
0.000*
(SCC > 5 × 105)
Quarter wise
440
199
45.23
39.784-50.615
4.009
0.000*
176
Journal of Animal Research: v.5 n.1. April 2015