University of Veterinary Science

About: University of Veterinary Science is a education organization based out in Pyinmana, Myanmar. It is known for research contribution in the topics: Population & Receptor. The organization has 597 authors who have published 650 publications receiving 14262 citations.

Nutrient absorption in gnotobiotic animals.

Abstract: Animals, whatever the species, are constantly exposed to a fluctuating external population of microorganisms. These microorganisms constitute part of the host’s “external environment,” and if the delicate balance regulating their numbers is disrupted, or if they gain access to the host’s “internal environment,” they may be detrimental to the host’s homeostatic mechanisms. The interactions between the gastrointestinal (GI) microflora and the host animal were first recognized by Pasteur (1885) nearly a century ago. Pasteur postulated that the microflora were indispensable to the host and assumed that in the course of phylogenetic evolution, microbial associates developed that assisted in the “survival of the fittest” (Schottelius, 1902). Nencki (1886) and later Metchnikoff (1903) perceived the microflora as antagonistic to the host’s well-being. Some sixty years elapsed before definite proof of “reproducing germfree existence” was obtained by Gustafsson (1948) and Reyniers and co-workers (1946, 1949). With the establishment of the gnotobiotic (known flora) animal as a tool, it became possible to assess the total effect of the microflora on the host’s nutritional, physiological, biochemical, and morphological status, to study the relationship between individual species of microorganisms in mono-, di-, or polyassociation with the host, to study the homeostatic effects which microorganisms exert on each other directly or indirectly, and to determine the effect of the host on its microflora.

The effect of tannin treatment and subsequent urea supplementation of sunflower meal on the in vitro digestibility of its crude protein for ruminants.

Abstract: The effect of tannin treatment (TSFM) and subsequent urea supplementation (TSFM + U) on the digestibility of sunflower meal (SFM) protein was studied by means of a three-phase laboratory method simulating the ruminant's digestion. Under the influence of the ruminal fluid 67% of SFM protein, 62% of TSFM protein and 58% of TSFM + U protein was degraded. The pepsin and pancreatin digestibilities of rumen undegraded protein (UDP) were as follow: 58.2% (SFM), 56.6% (TSFM), 43.3% (TSFM + U), and 22.0% (SFM), 28.8% (TSFM), 17.5% (TSFM + U), respectively. The four fractions (dissolved protein, oligopeptides, amino acids, and ammonia) of rumen degradable protein (DP) were also determined: 85 to 92% of rumen degradable protein was recovered in these four fractions. Owing to tannic acid treatment the quantity of dissolved protein decreased and that of oligopeptides increased.

Effects of Repeated Embryo Collection on Embryo Recovery Rate in Fertile Mares

Abstract: In mares, repeated embryo collection in successive oestrous cycles is necessary if a greater number of foals should be produced. We investigated effects of repeated embryo collection in fertile donor mares on embryo recovery rates. In addition, an influence of the individual mare and season on embryo recovery rates was studied. In nine mares, a total of 153 embryo collections were performed during 30 months (17 ± 2.2 embryo collections per mare). The overall embryo recovery rate was 64% and did not differ among mares. Between successive embryo collection procedures, recovery rate varied significantly; however, no increase or decrease in the embryo recovery rate with increasing number of successive embryo collections was seen. In three mares, ovulation ceased from November to February. In the remaining six mares, embryo production was successfully continued throughout winter and no influence of the month on embryo recovery rates was detected.