UDDER TEAT MORPHOLOGY AND BODY MEASUREMENTS AND THEIR RELATIONSHIP WITH MILK YIELD AND MILKING TRAITS IN GIR COWS
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Abstract
ABSTRACT
An investigation was undertaken to study the udder, teat and body measurements as
affected by parity and their relationship with milk yield and milking traits in 100 Gir cows at
Cattle Breeding Farm, JAU, Junagadh. Mean udder length, width and depth were found to be
(cm) 45.99 ± 2.07, 20.51 ± 0.99 and 20.29 ± 1.04, respectively and were significantly (P < 0.01)
affected according to different orders of lactations. Positive and significant correlations were
observed among all the udder measurements. However, the correlation was significant among
Udder length, Udder width and daily milk yield (kg) (P<0.05). The average teat length (cm) and
diameter (cm) in the present study were 7.07 ± 0.42 and 3.49 ± 0.21 cm respectively. A positive
correlation existed between the average daily milk yield and the various teat measurements such
as teat length, teat diameter, but the correlation was significant (P<0.05) only between the average
teat diameter (cm) and the average daily milk yield (kg). Teat lengths and diameter were
significantly (P<0.01) increasing with parity with respect to different shapes of teat. Overall body
length, height at withers and heart girth were 126.24 ± 1.37 cm, 130.60 ± 1.65 cm and 165.13 ±
1.67 cm respectively. Body length (P< 0.05) and heart girth (P < 0.01) were significant with respect
to different shapes of udder.
Gir cows in third parity were found to have higher average daily milk yield of 6.06 ± 0.91
kg followed by second, fourth and first group as 5.45 ± 0.54, 5.21 ± 0.53, and 4.25 ± 0.30 kg.
Second group was found to have higher average milking time (min.) of 2.90 ± 0.18 followed by
third, first and fourth group as 2.72 ± 0.28, 2.71 ± 0.16 and 2.63 ± 0.18, respectively. Milk flow
rate (kg/min.) was found lower in first group (0.73 ± 0.04) and higher in fourth group (1.01 ±
0.09). Milk SNF (%) ranged from 8.48 ± 0.05 to 8.57 ± 0.05 in fourth to first group, which is in
decreasing order but Fat% did not show any trend. Protein% was also significantly ( P<0.05 )
affected by lactation number.
Keywords : udder measurements, teat measurements, body measurements, parity, milk yield,
milking traits, Gir cows.
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