Zitnan R, Bomba A, Sommer A, Kolodzieyski L
Research Institute of Animal Production Nitra, Kosice, Czechoslovakia.
Arch Tierernahr. 1993;44(3):227-33. doi: 10.1080/17450399309386072.
The concentrations of volatile fatty acids and the development of rumen epithelium and microflora adhered to rumen wall in suckling lambs were observed. Total VFA concentration increased with age. The differences between the 1st (28.5 mmol.l-1) and 4th week of age (78.7 mmol.l-1) and between 6th (82.1 mmol.l-1 and 10th week of age (117.4 mmol.l-1) were significant (p < 0.01). The highest molar proportion of acetic acid (71.2 mol%) was observed in 1 week-old lambs and the highest molar proportion of propionic acid in 6 week-old lambs (20.8 mol%). Length and surface characteristics of papillae changed dramatically over the 10-week period. In samples from 1-week and 4-week-old lambs, the papilla surface was relatively smooth and epithelial cells were relatively thin and flat. In samples from 6-week and 10-week-old lambs the tissue topography was typically rough. In the 1-week-old lambs the cocci, single rods and short rods in pairs were present at very low population levels. At 4 weeks the epimural community became notably more complex and bacteria were present at a higher population level. The dominant morphotype at 6 weeks was a rod-shaped end-on attached bacterium. The epimural microflora became the most complex at 10 weeks.
观察了哺乳期羔羊瘤胃挥发性脂肪酸的浓度以及附着于瘤胃壁的瘤胃上皮和微生物区系的发育情况。总挥发性脂肪酸浓度随年龄增长而增加。1周龄（28.5 mmol·l-1）和4周龄（78.7 mmol·l-1）以及6周龄（82.1 mmol·l-1）和10周龄（117.4 mmol·l-1）之间的差异具有显著性（p < 0.01）。1周龄羔羊中乙酸的摩尔比例最高（71.2 mol%），6周龄羔羊中丙酸的摩尔比例最高（20.8 mol%）。在10周的时间里，乳头的长度和表面特征发生了显著变化。在1周龄和4周龄羔羊的样本中，乳头表面相对光滑，上皮细胞相对薄且扁平。在6周龄和10周龄羔羊的样本中，组织形态通常较为粗糙。在1周龄羔羊中，球菌、单杆状菌和成对短杆状菌的数量水平非常低。4周时，瘤胃壁微生物群落明显变得更加复杂，细菌数量水平更高。6周时占主导地位的形态类型是一种末端附着的杆状细菌。瘤胃壁微生物区系在10周时最为复杂。
