ABSTRACT
Osteodystrophia fibrosa is a metabolic disease of goats resulting from the insufficient mineralization of bones, excessive bone resorption, and improper bone development, leading to subsequent accumulation of the fibrous connective tissue. This report describes the successful therapeutic management of acute osteodystrophia fibrosa in early-weaned goat kids by following a medical protocol. Three Malabari male goat kids of forty days old from two different litters of the same farm were presented with spontaneous, bilaterally symmetrical, non-inflammatory facial swelling, protruded tongue, prominent eyeballs, frothy drooling saliva, diarrhoea, and inanition due to the inability in mastication or suckling for the last two weeks. As per the history, these kids were weaned and started feeding pelleted concentrate feed and jackfruit leaves along with the milk sucking three weeks back only. On clinical examination, the vital parameters were normal and the key phenotypic abnormalities noted were the abnormally developed maxilla/mandible, manifested as a swelling that was hard to touch, and the loosely attached teeth. In biochemical evaluation, the reduction in Ca:P ratio was evident and the serum creatinine level was within normal ranges. A therapeutic protocol was devised for three weeks by including calcium (calcium gluconate), phosphate-binder (Kaolin), vitamins (Vit. ADEH), and anabolic steroid (Nandrolone; a well-established drug promoting formation and mineralization of bone in mammals). Considerable improvement was observed after three weeks of therapy and the animals were having apparently normal facial appearance on the review after three months. The kids showed normal healthy growth and were slaughtered later for meat purpose after gaining adult body weight. This report accentuates the possibility of acute hypocalcemia-induced osteodystrophia fibrosa, rather than hyperphosphatemia-induced, and its management using anabolic steroids for better clinical recovery in growing goat kids.
Subject(s)
Goats , Milk , Male , Animals , Weight GainABSTRACT
Ferrofluid-based micromixers have been widely used for a myriad of microfluidic industrial applications in biochemical engineering, food processing, and detection/analytical processes. However, complete mixing in micromixers is extremely time-consuming and requires very long microchannels due to laminar flow. In this paper, we developed an effective and low-cost microfluidic device integrated with microscale magnets manufactured with neodymium (NdFeB) powders and polydimethylsiloxane (PDMS) to achieve rapid micromixing between ferrofluid and buffer flow. Experiments were conducted systematically to investigate the effect of flow rate, concentration of the ferrofluid, and micromagnet NdFeB:PDMS mass ratio on the mixing performance. It was found that mixing is more efficient with lower total flow rates and higher ferrofluid concentration, which generate greater magnetic forces acting on both streamwise and lateral directions to increase the intermixing of the fluids within a longer residence time. Numerical models were also developed to simulate the mixing process in the microchannel under the same conditions and the simulation results indicated excellent agreements with the experimental data on mixing performance. Combining experimental measurements and numerical simulations, this study demonstrates a simple yet effective method to realize rapid mixing for lab-on-chip systems.
