Alterations in lactogenic and haematological parameters during lactation in goats under field ambience
Loading...
Date
2014-02
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
Thirty lactating goats were selected randomly from the local residents around Govind Ballabh Pant, University of Agriculture and Technology, Pantnagar, to determine the variations of milk composition, somatic cell count and blood composition. Lactating goats were divided as per the stages of lactation, parity and seasons. Milk and blood samples were taken at pre-determined intervals, were evaluated and analyzed.
Stage of lactation was found to influence milk protein, fat, and total solids significantly (P<0.05). Fat, total solids, SNF increased from 3.83±0.18%, 10.95±0.43%, 7.12±0.36% in the first stage to 6.3±0.60%, 12.31±0.27%, 8.40±0.12% respectively, in the last stage whereas, protein level decreased significantly from 5.11± 0.19% to 3.93±0.26 significantly(P<0.05). SCC increased significantly (P<0.05) from 8.47±0.05×105 /ml during early stage, to 12.82±0.80 ×105/ml during late stage of lactation. TLC varied significantly (P<0.05) with the value of 9.75±0.50× 103/µl in the first stage to 12.55±0.13× 103/µl. An increase in neutrophils observed from 32.5±0.97% in the first stage to 38.67±0.61% and decrease in lymphocytes from 57.92±0.71% to 52.75% with the stage of lactation was recorded. Haemoglobin percent also increased significantly, (P<0.05 with the stage of lactation, from 9.42±0.52g/dl in the first stage to 12.49±0.16g/dl in the last stage of lactation. Milk Fat, total solids and SNF content increased significantly (P<0.05) but lactose percent decreased significantly with the advancement of parity from 3.73±0.19%, 14.28±1.31% and 10.55±1.34% in primiparous goats to respective value of 5.2±0.22%,18.35±1.67% and 13.16±1.56% in multiparous goats. SCC increased with parity from 6.37 ±0.56 × 105 /ml in the primiparous to 9.72±0.86 × 105 /ml in multiparous goats. Blood parameters declined significantly (P<0.05) with parity.TLC and lymphocytes decreased from 17.47±1.07× 103 /µl, 58.67% in the primiparous to 12.72±0.55× 103 /µl, 48.83±0.83% whereas, neutrophils increased from 33.5±1.18% in primiparous to 41±1.21% in multiparous animals. Significant (P<0.05) seasonal difference was evident on pH, fat, protein and lactose levels with values of pH and protein increasing from 5.9±0.13, 3.43±0.36% in wet season to 6.17±0.14 and 5.72±0.14% and fat and decreasing from 6.7±0.34% in wet to 4.77±0.19% in dry season. SCC decreased significantly (P<0.05), from 11.64±0.51× 105 /ml in the wet season to 9.3±0.40× 105 /ml in the dry season. TLC decreased from 15.68±0.62× 103 /µl in wet to 11.78±0.54× 103 /µl in dry season. Lymphocytes value decreased from 54.5±1.28% in wet season to 51.17±0.87% in dry season and the value of Hb and TEC increased in dry season from 10.70±0.38 g/dl and 10.94±0.46× 106 /µl to 13.65±0.52 g/dl and 14.10±0.75 × 106 /µl. It may be concluded that milk and blood parameters vary with the physiological parameters for fulfilling the demands of the infants. SCC value also alter with the changing conditions of the animals therefore, they alone cannot be the determinant of udder inflammation.
Description
Keywords
null