STUDIES ON MINERALS, BIOMARKERS OF OXIDATIVE STRESS AND ENERGY STATUS DURING TRANSITION PERIOD IN DAIRY COWS
KrishiKosh
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Title |
STUDIES ON MINERALS, BIOMARKERS OF OXIDATIVE STRESS AND ENERGY STATUS DURING TRANSITION PERIOD IN DAIRY COWS
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Creator |
Kachhawaha, Subhash Chandra
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Contributor |
A.P. Singh
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Subject |
fruits, biological development, sowing, yields, planting, developmental stages, vegetables, auxins, germinability, seed treatment
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Description |
The present study was conducted on 123 crossbred dairy cows of Bikaner, Jodhpur and Pali-Marwar districts of Western Rajasthan to evaluate the status of minerals, oxidative stress and energy in transition period. The blood samples taken from each animal in pre and post-partum periods were analyzed. The subclinical ketosis was diagnosed on the basis of plasma BHBA (> 1.2 mmol/L) and NEFA (> 0.7 mmol/L) levels during post-partum period. The overall prevalence of subclinical ketosis was recorded 23.57 per cent. The prevalence was highest in Pali-Marwar district (26.08 percent). Overall deficiency of Ca, Pi, Cu and Zn was 34.15, 40.65, 33.33 and 2.43 per cent, respectively in cows. The overall mean values of oxidative stress parameters of GSH and MDA levels were recorded as 2.423±0.071 and 2.811±0.109 mg/dl per gm Hb (38.813±0.729 and 49.753±1.118 nmol/ml per gm Hb) in healthy and subclinical ketotic cows, respectively. The overall mean values of plasma glucose, BHBA, NEFA, total protein, BCS levels in healthy and subclinical ketosis were 56.293±0.611 and 42.768±0.937 mg/dl; 0.753±0.030 and 1.289±0.042 mmol/l; 0.262±0.010 and 0.683±0.016 mmol/l; 6.816±0.046 and 7.221±0.071 g/dl; 3.392±0.029 and 2.982±0.044, respectively. Highly significant difference (P≤0.01) was observed for glucose, BHBA, NEFA, cholesterol, triglyceride, total protein, AST, GGT, GSH, MDA, BCS, Ca, Cu, milk production and significant difference (p≤0.05) was observed for creatinine, globulin, potassium levels in healthy and SCK dairy cows. Significant correlations were observed among glucose, NEFA, BHBA, MDA, BCS, AST, GGT in subclinical ketotic cows. Therapeutic trial was conducted using Propylene glycol and choline in subclinical ketotic cows. The result revealed highly significant increase in the value of glucose, milk production and decrease NEFA and BHBA levels. It was concluded that dairy cows were in oxidative stress during transition period. Though negative energy balance (NEB) is a physiologically normal process yet excessive NEB reflects poor adaptation and results in adverse effects on health and production after calving. Estimation of NEFA and BHBA for prevalence of subclinical ketosis is expensive and practically challenging. It is useful with in herd level testing of energy status. It can be broadly stated that the transition cow adapted to provide minimal risk of macro and micro mineral metabolism including calcium (Ca), inorganic phosphorus (Pi), copper (Cu) and zinc (Zn). Changes of AST and GGT enzymes were mainly caused by SCK in postpartum period cows. The levels of these liver enzymes were influenced by stage, health and energy status. Rajasthan University of Veterinary and Animal Sciences, Bikaner - 334001 |
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Date |
2017-01-03T15:23:55Z
2017-01-03T15:23:55Z 2015 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/94210
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Language |
en
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Format |
application/pdf
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Publisher |
Rajasthan University of Veterinary and Animal Sciences, Bikaner - 334001
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