The aim of present study was to investigate the effect of full mother contact and voluntary colostrum suckling on the health, stress and growth performance of neonatal Murrah buffalo calves. For this, two experiments (exp.) were conducted involving exp.1, 24 mother-calf pairs were divided into three equal groups (eight pairs/each group). In no mother contact (NC) group, weaning was allowed immediately after birth. In restricted mother contact (RC) group, restricted contact was allowed twice daily. In fence-line mother contact (FC) group, calves were in full-time mother contact from birth to day (d) 5 and allowed voluntary colostrum suckling and thereafter fence-line contact. In exp.2, another 24 mother-calf pairs were selected and divided into two groups (12 pairs in each group), with the same conditions as the RC and FC groups in exp.1. Average daily gain, total protein and total Ig concentrations differed between different groups in both experiments. Cortisol levels were lower in FC followed by RC and lowest in NC calves, and similar results were observed in exp.2. It was concluded that the provision of full mother contact along with free choice colostrum suckling from birth to 5 days followed by fenceline mother contact and twice daily suckling at milking time abated the separation and weaning stress and remarkably improved the growth, immune status and health of Murrah buffalo calves as compared to the calves which were allowed only limited contact twice daily or the calves which were weaned at birth.
The present study was carried out to isolate mesenchymal stem cells (MSCs) from adipose tissue of cattle (Bos indicus), characterise them, and apply them for the treatment of mastitis and metritis in the cow. Cattle MSCs were isolated from adipose tissue near the loin region of cow. Isolated adipose tissue was subjected to enzymatic digestion using 2% collagenase with agitation at regular intervals. The cells obtained after digestion were resuspended in cell culture flasks containing growth enriched medium and cultured under standard culture conditions. Alkaline phosphatase staining was used as one of the parameters to confirm cultured putative MSCs. Bovine Ad-MSCs were further characterised using real time-PCR by amplification of MSC-specific markers: CD73, CD90, and CD105 as positive markers and CD34, CD45, and CD79a as negative markers. Immunocytochemistry showed the presence of CD73, CD90, and CD105 on the cell surface. Three groups-control (C), local (L), and intravenous (IV)-with 6 cows suffering from mastitis were taken in each group and subjected to MSC transplantation through local and intravenous routes. Control group animals were subjected to antibiotic treatment only. Similarly, another three groups were taken with 6 cows in each group suffering from metritis. Post-transplantation wound healing, tissue repair, and reduction in inflammation were monitored for 26 days, at different time intervals; that is, after Days 1, 3, 7, and 15. Blood samples were also collected from animals at the same time intervals for real time-PCR. A similar examination was also done in metritis groups along with the analysis of the reduction in turbidity of cervical fluid at the abovementioned time intervals. Real time-PCR was performed to determine relative expression of genes for proliferative factors, anti-inflammatory cytokines, and antimicrobial peptides on cells isolated from blood collected at different time intervals. Gene expression in the local group of mastitis subjected to MSC injection was significantly higher than that of the IV and control group. The somatic cell count declined in both local and IV groups compared with the control group. Whereas the expression of the same genes in the IV group of metritis was significantly higher than that of the local and control groups of cows. The turbidity of cervical fluid and mucus was reduced in the IV group compared with the local group. In conclusion, we demonstrated the healing potential of MSCs in a cow model via MSC injection. Promising results were obtained in curing mastitis in both local and IV groups, whereas healing in the case of metritis was significantly higher in the IV group compared with both the control and local groups of cows. The study indicates the potential use of MSc for treatment of mastitis and metritis in cattle through wound healing and decreasing microbial infection.
The study reported aimed to assess the effect of different rearing systems on behavioural responses to novel stimuli in Murrah buffalo calves. Calves in the experiment were grouped in three treatments in accordance with differed maternal interaction: dam-reared through fenceline (FMC; n = 8), restricted maternal contact (RMC; n = 8); no maternal contact (NMC; n = 8). FMC calves had permanent access to their mothers for first 5 days of birth and thereafter were housed in groups with fence line separation from their mothers and suckled twice a day. RMC calves had access to their mother only twice a day during the suckling hours. NMC calves were separated from their mothers within 24 h after birth and fed via bottle with nipple. Behavioral response of each calf toward novel object (a bright coloured ball) was evaluated on exposure during the test for three consecutive days across three months. The findings showed that buffalo calves that were given fence line contact with their mothers performed significantly (P<0.05) the best across all treatment groups in terms of response to a novel stimuli. Whereas the performance of calves with restricted contact with their mothers was superior to calves weaned at birth from their mothers, it was not on par with calves with full time fence line contact with their mothers, calves weaned at birth with no provision of maternal contact performed poorly in terms of behavioural response to novel stimuli.
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