Lactation stage tweaks heamatological, serum biochemical, oxidative stress marker and endocrinological profiles in crossbred cows under tropical humid island ecosystem of Andaman and Nicobar Islands

Abstract

AbstractThe present study was outlined to appraise the interrelation between heamatological, blood metabolic profiles and lactation stages in crossbred (CB) dairy cows in ANI. Healthy (n = 18) CB cows with age of 5–7 years were selected from cattle breeding farm, ICAR-CIARI, Port Blair, ANI. Heamatological profiles, serum biochemical profiles, oxidative stress markers and endocrinological profiles were measured at 15-day interval from day 01 to 305 of lactation and divided into first (day 01 to 90), second (day 91 to 180) and third (day 181 to 305) stage of lactation. Average milk yield (L) was not significantly differed among the stages of lactations; however, first (8.42 ± 1.18) and second (9.67 ± 0.25) stages were had higher than third (7.82 ± 0.47) stage of lactation. Hematological profiles were not-differed significantly among the stages of lactation; however, these values were within the range of bovine species. Serum biochemical profiles such as glucose, triglyceride, total cholesterol, total protein and globulin were escalated significantly (p < 0.05) as stage of lactation advanced whereas albumin and creatinine were dwindled significantly (p < 0.05) as lactation stages progressed. Aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), calcium, phosphorous and magnesium were non-significantly differed among the stages of lactation. Similarly, serum endocrinological profiles such as Triiodo thyronine (T3), Thyroxine (T4) were surged and prolactin and cortisol were diminished significantly (p < 0.05) as stages of lactation progressed. Total antioxidant capacity (TAC) was increased and oxidative stress marker (malondialdehyde; MDA) was decreased significantly (p < 0.05) as stage progressed. It is concluded that among different stages of lactation, first and second stages are more stressful events as contrast to third stage of lactation in crossbred cattle in humid tropical island ecosystem of ANI.