• Title, Summary, Keyword: omasum

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Development on the omasum of fetuses and neonates in Korean native goats (한국재래산양의 태아 및 신생아의 제3위 발달에 관하여)

  • Huh, Chan-kwen;Kim, Chong-sup;Jung, Soon-hee;Kim, Moo-kang
    • Korean Journal of Veterinary Research
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    • v.35 no.1
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    • pp.1-9
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    • 1995
  • The development of omasum in fetuses between 60, 90, 120 days of gestation and neonates of Korean native goats was investigated by fight; scanning electron microscopy. The results were summarized as follows : 1. In the 60-day-old fetuses, the stomach was developed and differentiated into four compartments of rumen, reticulum, omasum, and abomasum. The mucosa of the omasum was thrown into folds which appeared to be three or four different orders of large, medium, small, and smallest laminae. 2. In the 90-day-old fetuses, the omasal laminae had increased greatly in length and cores of omasal laminae were invaginated laterally. 3. In the 120-day-old fetuses, the wall of the omasal laminae had increased in length and the lamina epithelialisis had slightly increased in thickness. The lateral invaginations at the dark zone had increased in length and depth. The tunica muscularis increased only slightly in thickness particularly within its inner circular layer. 4. In the neonate, the muscularis and the omasal laminae had increased in thickness. The lateral invaginations of the dark zone were observed in the first, second and third order of omasal laminae. 5. Scanning electron microscopic studies : In the 90-day-old fetuses, numerous microvilli and microridges were observed on the luminar surface of the omasal mucosa. The omasal papillae were already formed at 120 days of gestation. In the I20-day-old fetuses omasal papillae liked nipple shape. In the neonate, the omasal papillae liked the thumb.

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A survey on hygiene management for raw by-products of beef in Gwangju area, Korea (광주지역 생식용 소 부산물의 위생관리 실태 조사)

  • Kim, Ji-Yeon;Jang, Mi-Sun;Koh, Ba-Ra-Da;Ji, Tea-Kyung;Sung, Chang-Min;Park, Da-Hae;Kim, Hyun-Joong;Kim, Eun-Sun;Kim, Yong-Hwan
    • Korean Journal of Veterinary Service
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    • v.36 no.3
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    • pp.209-216
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    • 2013
  • A total of 301 samples of bovine liver, spleen and omasum were collected from butchers and restaurants in Gwangju, Korea during 2012 and all samples were subjected to bacteriological examination and antibiotic residues. Also, this study was performed to survey the consciousness for hygiene of livestock workers who are handling bovine by-products in Gwangju. The detection rate of aerobic plate count (APC) was higher in summer than in other seasons in all by-products (P=0.000). The detection rate of E. coli count was lower in the liver than the spleen and omasum (P=0.000). Twenty four of the samples (8.0%) were contaminated with S. aureus while one spleen sample (0.3%) was contaminated with L. monocytogenes and finally 10 (3.3%) of the liver and omasum samples were contaminated with Cl. perfringens. Five of the twenty-four S. aureus isolates harbored enterotoxin gene. However, the cpe gene of Cl. perfingens was not detected among any of the 10 isolates. Antibiotic residues were not detected in the liver samples. The consciousness survey's results showed that most of them (58.8%) were safe.

Characterization of Hanwoo Bovine By-products by Means of Yield, Physicochemical and Nutritional Compositions

  • Seong, Pil Nam;Kang, Geun Ho;Park, Kuyng Mi;Cho, Soo Hyun;Kang, Sun Moon;Park, Beom Young;Moon, Sung Sil;Ba, Hoa Van
    • Food Science of Animal Resources
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    • v.34 no.4
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    • pp.434-447
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    • 2014
  • Though the edible bovine by-products are widely used for human consumption in most countries worldwide but the scientific information regarding the nutritional quality of these by-products is scarce. In the present study, the basic information regarding the yields, physicochemical and nutritional compositions of edible Hanwoo bovine by-products was studied. Our results showed that the yields, physicochemical and nutritional composition widely varied between the by-products examined. The highest pH values were found in rumen, reticulum, omasum and reproductive organ. Heart, liver, kidney and spleen had the lowest CIE $L^*$ values and highest CIE $a^*$ values. Liver had the highest vitamin A, B2 and niacin contents whereas the highest B1 and B5 contents were found in kidney. The highest Ca content was found in rumen, reticulum, omasum, head and leg while the highest Mn and Fe contents were found in rumen, omasum and spleen, respectively. Liver had the highest Cu content. Total essential amino acids (EAA)/amino acids (AA) ratios ranged between the by-products from 38.37% to 47.41%. Total polyunsaturated fatty acids (PUFA) levels ranged between the by-products from 2.26% to 26.47%, and most by-products showed favorable PUFA/SFA ratios. It is concluded that most of by-products examined are good sources of essential nutrients and these data will be of great importance for promotion of consumption and utilization of beef by-products in future.

THE DISTRIBUTION OF DIGESTA PARTICLES AND MEAN PARTICLE SIZE OF DIGESTA OBTAINED FROM THE DIVERSE PARTS OF THE GASTROINTESTINAL TRACT OF RUMINANTS

  • Sekine, J.;Fujikura, T.;Oura, R.;Asahida, Y.
    • Asian-Australasian Journal of Animal Sciences
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    • v.5 no.1
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    • pp.13-18
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    • 1992
  • Three cattle, a sheep and a goat were slaughtered to determine the distribution of digesta particles and mean size of digesta particles. Aliquot samples of digesta in the diverse sites of the digestive tracts were fractionated by a wet sieving technique. Fractionated particles were analyzed by the magnetic grid analyzer system constructed by authors. Results showed that the proportion of particles in digesta was similar among the omasum, abomasums cecum, colon and rectum, but that for the reticulo-ruminal digesta was different from the others. The pattern of the mass base frequency distribution of particles was also similar in the post-ruminal digesta. Average Heywood's diameter (the diameter equivalent to that of a circle with equal area to a projected area of a given particle) was about 1.2 mm in the reticulo-ruminal digesta and decreased to 0.65 mm for cattle or to about 0.35 mm for sheep and goat in the omasal digesta. Average Heywood's diameter was about the same in the post-ruminal digesta. It is concluded that mean particle size and particle distribution in digesta of the rectum or feces reflect those in digesta of the omasum.

Matrix solid phase dispersion isolation and high performance liquid chromatographic determination of five benzimidazole anthelmintics in bovine muscle, liver and omasum (시료고체상분산처리와 액체크로마토그라피를 이용한 소의 근육, 간 및 천엽에서의 벤지미다졸계 구충제 잔류분석)

  • Kim, Chung-Hui;Kim, Gon-Sup;Park, Jung-Hee;Hah, Dae-Sik;Ryu, Jae-Doo;Son, Sung-Gi;Heo, Jung-Ho;Jung, Myung-Ho;Kim, Jong-Shu
    • Korean Journal of Veterinary Research
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    • v.42 no.2
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    • pp.171-181
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    • 2002
  • Simultaneous multiresidue analysis using liquid chromatography determination for five benzimidazole anthelmintics(thiabendazole, oxibendazole, albendazole, mebendazole and fenbendazole) in bovine muscle, liver and omasum has been described. Blank or benzimidazole-fortified samples(0.5g) were blended with bulk $C_{18}$($40{\mu}m$, 18% load, endcapped, 2g). A column made from the resultant $C_{18}$/animal tissue matrix was first washed with hexane($8m{\ell}$), following which the benzimidazoles were eluted with acetonitrile($8m{\ell}$). Analytes of extracted sample were determined by liquid chromatography with UV detector at 290nm. Correlation coefficients of standard curves for individual benzimidazole isolated from fortified samples, using internal standardization, were linear($0.991{\pm}0.007$ to $0.996{\pm}0.005$) with average relative percentage recoveries from $62.1{\pm}3.8(%)$ to $92.3{\pm}7.5(%)$ for the concentration range($0.2{\sim}6.4{\mu}g/g$), respectively. Recoveries rates of TBZ, MBZ in liver, OBZ, MBZ in muscle and TBZ, MBZ in omasium from fortified benzimidazole were 92.%, 87.3%, 74.5%, 82.7%, 75.2% and 83.5% at condition II, respectively. Condition II showed higher recoveries rates than condition I. These results indicated that the matrix solid phase dispersion(MSPD) methodology is acceptable for the determination of 5 benzimidazole anthelmintics and may also suitable for other matrixes of food animal origin.

Studies on Kinetics of Ciliates Inhabited in Stomach of Korean Native Cattle (한우(韓牛)의 위내(胃內)에 서식(棲息)하는 섬모충(纖毛蟲)의 동태(動態))

  • Rhee, Jae Ku;Baek, Byeong Kirl;Kim, Su Myung
    • Korean Journal of Veterinary Research
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    • v.15 no.2
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    • pp.287-291
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    • 1975
  • In order to observe the kinetic of ciliates inhabited in the stomach, investigation of the content juice in the stomach was carried out on the 30 Korean native cattle, selected as healthy ones and slaughtered at Jeonju abattoir in August, 1974. The following is a brief summary of the leading facts gained through the experiment. 1. The average pH of the content juice showed $6.567{\pm}0.056$(SE) in the rumen, $6.607{\pm}0.053$ in the reticulum, $6.183{\pm}0.056$ in the omasum and $2.627{\pm}0.061$ in the abomasum. 2. The presumed number of ciliates per ml was calculated $168,200{\pm}17,035$(SE) in the rumen, $173,200{\pm}19,728$ in the reticulum, $23.600{\pm}3.537$ in the omasum and $467{\pm}266$ in the abomasum. 3. In the content juice the number of ciliates was gradually slowed down, the pH decreased from rumen to abomasum and the changes were denoted by quadratic curves(parabolas). 4. In accordance with the increase of the number of ciliates the pall also becomes higher and in this situation the correlation coefficient was ${\gamma}_{xy}=0.508$. 5. Population density of ciliates was checked and Entodinium showed 60 per cent among them, but Polyplastron was figured only from 0 to 0.05 per cent. 6. Among 26 species of ciliates which were identified from the content juice, Entodinium simplex was showed the highest population density, raging from 40 to 50 per cent, Dasytricha ruminantium was neat to it, Eudiplodinium affine after the next, and Entodinium caudatum and Eudiplodinium maggi were also found abundantly in the abomasum.

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Characterization of the microbial communities along the gastrointestinal tract of sheep by 454 pyrosequencing analysis

  • Wang, Jin;Fan, Huan;Han, Ye;Zhao, Jinzhao;Zhou, Zhijiang
    • Asian-Australasian Journal of Animal Sciences
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    • v.30 no.1
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    • pp.100-110
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    • 2017
  • Objective: The gastrointestinal tract of sheep contain complex microbial communities that influence numerous aspects of the sheep's health and development. The objective of this study was to analyze the composition and diversity of the microbiota in the gastrointestinal tract sections (rumen, reticulum, omasum, abomasum, duodenum, jejunum, ileum, cecum, colon, and rectum) of sheep. Methods: This analysis was performed by 454 pyrosequencing using the V3-V6 region of the 16S rRNA genes. Samples were collected from five healthy, small tailed Han sheep aged 10 months, obtained at market. The bacterial composition of sheep gastrointestinal microbiota was investigated at the phylum, class, order, family, genus, and species levels. Results: The dominant bacterial phyla in the entire gastrointestinal sections were Firmicutes, Bacteroidetes, and Proteobacteria. In the stomach, the three most dominant genera in the sheep were Prevotella, unclassified Lachnospiraceae, and Butyrivibrio. In the small intestine, the three most dominant genera in the sheep were Escherichia, unclassified Lachnospiraceae, and Ruminococcus. In the large intestine, the three most dominant genera in the sheep were Ruminococcus, unclassified Ruminococcaceae, and Prevotella. R. flavefaciens, B. fibrisolvens, and S. ruminantium were three most dominant species in the sheep gastrointestinal tract. Principal Coordinates Analysis showed that the microbial communities from each gastrointestinal section could be separated into three groups according to similarity of community composition: stomach (rumen, reticulum, omasum, and abomasum), small intestine (duodenum, jejunum, and ileum), and large intestine (cecum, colon, and rectum). Conclusion: This is the first study to characterize the entire gastrointestinal microbiota in sheep by use of 16S rRNA gene amplicon pyrosequencing, expanding our knowledge of the gastrointestinal bacterial community of sheep.

Spontaneous paratuberculosis in a sika deer : a case report (Sika deer의 paratuberculosis 자연발생예에 관한 병리학적 관찰)

  • Bae, Jong-hee;Jean, Young-hwa
    • Korean Journal of Veterinary Research
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    • v.33 no.4
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    • pp.673-678
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    • 1993
  • A male sika deer, 3 years old, which had the clinical history of chronic watery diarrhea with severe emaciation for 4 months was submitted and euthanized. On necropsy, there was diffuse mucosal hypertrophy of gastrointestinal tract with thickened intestinal walls and swollen mesenteric lymph nodes. In histologic lesions. diffuse proliferation of epithelioid cells are present in the laminar propria, submucosa muscle layer and subserosa of most gastroinlestinal organs except omasum. These epithelioid cells are also present in the cortex and medulla of meseriteric lymph nodes and in the portal triads of liver. Most these epithelioid cells contain acid-fast positive bacilli using Ziehl-Neelsen staining in the cytoplasm. Based on the clinical signs, gross findings and histological lesions, this deer was diagnosed as paratuberculosis. The wide range of target organs and the severity of the lesions observed in this case is quite different comparing to those of other ruminant.

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