Effect of Cold Stress on Milk Yield, Physiological and Hemato-biochemical Profile of Cross Bred Dairy Cattle

The present study was performed to evaluate haematological and biochemical parameters with response to milk production of dairy cattle at low temperature. Ambient temperature and relative humidity were recorded and the temperature-humidity index (THI) was calculated as indicator of thermal comfort zone for cattle. Lactating crossbred dairy cattle were selected for this study. A significant increase in RBC, Hb, and PCVWBC was recorded in winter. Glucose and aspartate aminotransferase (AST), albumin level showed a significant increase in winter. Milk production level was decrease due to cold stress. These results provided an insight into the haematological and biochemical responses of Jersey crossbred cows to different environmental conditions. Hence, this study will be helpful for the better dairy cattle management in winter seasons for higher production at the cold arid high altitude region

Shear bond strength of conventional glass ionomer cement to mechanically treated versus chemo-mechanically treated dentin

To determine the effect of a chemo mechanical caries removal [CMCR] gel Carisolv[TM] on shear bond strength [SBS] of conventional glass ionomer cement bonded to human permanent dentin. One conventional glass ionomer cement [Fuji IX, GC Co, Tokyo Japan] was used. Sixty four teeth were sectioned occlusally; exposed coronal dentin was polished with silicon papers. Teeth in the control groups [C] were directly bonded to respective glass ionomer cements [GIC]. For test groups [T] the polished dentin surface was pre-treated with Carisolv [TM] [Singlemix Uncoloured Gel, Medi Team, Sweden] prior to bonding. Bonded specimens were stored for 24 hours and stressed to failure in the shear mode. SBS of Fuji IX, test group [4.97 +/- 0.82 MPa] was significantly higher [P = .001] than its control group [3.98 +/- 0.67MPa]. Carisolv[TM] pre-treatment significantly increased the shear bond strength of conventional glass ionomer cement to dentin

Effect of particle geometry of alloys on corrosion resistance in copper enriched amalgams

Amalgam restorations often tarnish and corrode in a hostile oral environment. Corrosion of dental amalgam can produce galvanism in a mouth having amalgam restorations. Ion release as a result of corrosion is most important. Amalgams are categorized as high copper amalgam and conventional amalgam. The latter having copper content less than 6%, corrode more and have limited use nowadays. There are many factors that can produce corrosion in amalgam restorations. This study is performed to assess the effect of shape and size of the particles of an alloy on the corrodibility of various high copper amalgams. Samples were prepared using three high copper amalgams having particles of various size and shape. The samples were tested for rate of corrosion using electrochemical corrosion testing apparatus. The data was collected and analyzed applying ANOVA. The results reveal that corrosion resistance of lathecut amalgam was significantly higher than spherical and admixed amalgams. High copper Lathe-cut amalgam has higher corrosion resistance than other amalgams