Seven Baladi goats of both sexes (9 to 24 months old) were used to describe the distribution pattern of ki-67, alpha smooth muscle actin (αSMA) and vimentin (VIM) in the reticulum and omasum. This study was carried out using the avidin-biotin immunoperoxidase method. Ki-67 immunostaining was restricted to the basal cells layer in the epithelia of both the reticulum and omasum, suggesting the im...

A procedure allowing digesta sampling from the omasum via a ruminal cannula without repeated entry into the omasum was developed. The sampling system consisted of a device inserted into the omasum via the ruminal cannula, a tube connecting the device to the ruminal cannula, and a single compressor/vacuum pump. Eight cows given ad libitum access to a total mixed diet were used in a crossover des...

The aim of this study is to describe differences in the ontogenesis of the omasum in sheep (domestic ruminant) and deer (wild ruminant). A total of 50 embryos and fetuses of Merino sheep and 50 Iberian deer were used, from the first stages of prenatal life until birth. For the study, the animals were divided into five experimental groups according to the most relevant histological characteristi...

In a ruminant the omasum forms a relatively small ovoid chamber connecting the reticulum to the abomasum. The two orifices are fairly close together and connected by a channel in the omasal wall. The internal structure has been likened to a loosely-closed book with sheets of tissue forming the leaves and the spine opposite to the channel. ‘The omasal leaves are of various sizes; all leaves atta...

BACKGROUND The study investigated the ultrasonographic appearance of the reticulum, rumen, omasum and abomasum of calves with ruminal drinking syndrome. METHODS In ten milk-fed calves with ruminal drinking syndrome the reticulum, rumen, omasum and abomasum were examined by ultrasonography using a 5-MHz linear transducer before, during and after the ingestion of milk. RESULTS The reticulum c...

1. A low-magnesium diet was fed to four sheep, each of which had been surgically prepared with a rumen fistula, a tube into the cranial one-third of the omasum, a tube to the cranial one-third of the abomasum and a re-entrant duodenal cannula. Mg, as gluconate or acate or acetate, was continuously infused for 12-14 d in turn into (1) the caudal duodenal cannula, (2) the abomasum, (3) the omasum...

Computed tomography (CT) of the reticulum, rumen and omasum was carried out in 30 healthy goats and the images were compared to corresponding body sections obtained at postmortem. A multidetector CT was used to examine goats in sternal recumbency. A setting of 120 KV and 270 mA was used to produce 1.5-mm transverse slices from the fifth thoracic vertebra to the sacrum. Soft tissue structures we...