Absorption of Magnesium and Other Macrominerals in Sheep Infused with Potassium in Different Parts of the Digestive Tract

1985 ◽  
Vol 61 (5) ◽  
pp. 1219-1229 ◽  
Author(s):  
M. J. Wylie ◽  
J. P. Fontenot ◽  
L. W. Greene
Rangifer ◽  
1990 ◽  
Vol 10 (2) ◽  
pp. 57 ◽  
Author(s):  
Kristina Rissanen ◽  
Tua Rahola ◽  
Pauli Aro

The influence of the Chernobyl accident in 1986 on the Finnish reindeer herding area was much smaller than the effects of the nuclear bomb tests in the 1960s. Only in one small area somewhat more Cs-137 was deposited than in the rest of the reindeer herding area. From that area 20 reindeer were chosen for investigation of the distribution of Cs-137. All tissues, organs, the skeleton, digestive tract, hide, head and hooves were sampled quantitatively. Three reindeer were pregnant and also the foetuses were studied. The Cs-137 amounts were determined by gammaspectrometric measurements. The results showed that the differences in the Cs-137 concentrations between muscle tissue from different parts of an individual reindeer were not more than 10 percent. Thus it is not essential from which part of the reindeer meat samples for surveillance purposes are taken. The concentration of Cs-137 in edible tissues other than muscle was lower except in the kidneys and scapula cartilage.


1960 ◽  
Vol 32 (1) ◽  
pp. 161-168
Author(s):  
Aarne Mäkelä

Three experiments have been carried out with altogether 16 Ayrshire calves in order to determine the digestibility of timothy hay cured at the early flowering stage and containing some red clover. The ages of the calves varied from 2 ½ to 9 months. Hay was given either totally or almost ad lib. Lignin was used as tracer. In experiment 1 the ages of the six experimental calves varied from 3 to 9 months. The calves aged 5—9 months digested hay equally efficiently when com-pared with each other. The youngest calf aged 3 months digested hay less efficiently (Table 1). In Experiment 2 the ages of the six experimental calves varied from 10 to 22 weeks. In the trial two control cows were also included. The calves aged 10—12 weeks digested hay less efficiently and the calves aged 4—5 months almost as efficiently as the control cows (Table 2). The ability of calves of the same age to digest hay was quite variable. Experiment 3 was carried out with four 7 months old calves. At the end of the trial the calves were slaughtered and the contents of the different parts of the digestive tract were weighed and sampled. On the ground of the analyses of the hay, the contents of the abomasum and the faeces, the digestibilities of N-free organic matter and N-free non-lignin organic matter in the proventriculi and in the whole digestive tract were esimated. The share of the proventriculi in the total digestibility of the said substances was 82—88 per cent (Table 3). The contents of the reticulo-rumen of the calves in Experiment 3 as well as those of younger calves aged 3 ½—4 months were weighed in connection with the slaughtering. The quantity of the contents in calves of 7 months was 30—40 kg and that in calves aged 3 ½—4 months 12—15 kg.


1964 ◽  
Vol 2 (21) ◽  
pp. 83-84

Many antispasmodic and anticholinergic drugs have been shown to reduce motility and secretion in different parts of the digestive tract, but in doses large enough to be effective these drugs invariably produce side effects. Oxyphencyclimine (Daricon - Pfizer) inhibits gastric secretion in animals without the peripheral anti-cholinergic effects seen with comparably effective gastric anti-secretory doses of other anticholinergic drugs tested. 1 Studies in man suggest that oxyphencyclimine has a selective action on the stomach, 2 that it can relieve symptoms of duodenal ulceration, 3 and that it has a prolonged action.


1994 ◽  
Vol 72 (3) ◽  
pp. 467-477 ◽  
Author(s):  
T. H. Terrill ◽  
G. C. Waghorn ◽  
D. J. Woolley ◽  
W. C. Mcnabb ◽  
T. N. Barry

Three experiments were conducted to determine the fate of condensed tannins (CT) during digestion in sheep. CT were measured as extractable, protein-bound and fibre-bound fractions using the butanol-HCI procedure. In Expt 1, purified CT were added to digesta from different parts of the digestive tract obtained from a pasture-fed sheep. Recoveries of CT after 0 and 4 h of anaerobic incubation at 39° averaged: rumen 78.9 and 57.5 %; abomasum 50.9 and 49.0 %; duodenum 64.4 and 46.0 % and ileum 43.4 and 38.8%. In Expt 2, [14C]CT was given per abomasum over a 6.5 h period at 15 min intervals to a sheep previously fed on Lotus pedunculatus (which contains CT). The sheep was killed at the end of the period and 92.4% of the label was recovered. Virtually all of the label was in the digesta, and none was detected in the blood, so that the CT-carbon appeared not to be absorbed from the small intestine. In Expt 3, rumen, abomasal and ileal digesta and faeces samples from sheep fed on Lotus pedunculatus were analysed for CT and CT flow along the digestive tract calculated from reference to indigestible markers. Values were low in all digesta samples, indicating disappearance of CT across the rumen and small intestine, and CT recovery in faeces was only about 15% of intake. However, the 14C results from Expt 2 suggested that little if any CT-carbon was absorbed and the low recoveries in Expt 1 are considered to be a consequence of either conformational changes to the CT molecule such that it is no longer detectable by colorimetric methods, an inability of the analytical method to release bound CT for the butanol–HCI assay, or interference from other digesta constituents. It is concluded that the butanol–HCI method of CT analysis is appropriate for quantifying CT in herbages but not in digesta or faeces, and that a substantial part of CT released during protein digestion in the small intestine may not be detectable by normal CT analytical methods.


2018 ◽  
Vol 51 (3) ◽  
pp. 195 ◽  
Author(s):  
Y. THEODORIDIS (Ι. ΘΕΟΔΩΡΙΔΗΣ) ◽  
C. HIMONAS (Χ. ΧΕΙΜΩΝΑΣ) ◽  
M. PAPAZAHARIADOU (Μ. ΠΑΠΑΖΑΧΑΡΙΑΔΟΥ)

During two periods (December 1985-October 1986 and October 1990-April 1991), the digestive tracts of 102 sheep and 29 goats were examined, with the purpose to find out and identify the helminthes parasites of these animals. The 96,1% of sheep and 93,1% of goats were found to be infected with 26 and 20 different helminths, respectively. The nematodes which were found out of the different parts of the digestive tract of these animals were: Sheep: oesophagus: Gongylonema pulchrum, abomasum: Haemonchus contortus, Teladorsagia circumcincta, T. trifurcata, Trichostrongylus axei and Cooperia oncophora, small intestine: Teladorsagia circumcincta, Trichostrongylus colubriformis} T. vitrinus, T. capricola, Cooperia oncophora, C. curticei, Nematodirus filicollis, N. helvetianus, N. spathiger, N. battus, Bunostomum trigonocephalum and Strongyloides papillosus, large intestine: Oesophagostomum venulosum, Oe. columbianum, Chabertia ovina, Trichuris globulosa, T. ovis and Skrjabinema ovis. Goats: all the previous findings except T. vitrinus, Nematodirus helvetianus, N. battus and Trichuris ovis. The cestodes parasites, Moniezia expansa, Moniezia benedni, Avitellina centripunctata and Stilesia globipunctata were found into the small intestine of sheep and, Moniezia expansa and Avitellina centripunctata, in goats only. All animals were infected with more than one different parasites. The sheep nematodes Cooperia curticei, Nematodirus helvetianus, and N. spathiger, were identified for the first time in Greece, more over, Nematodirus battus were found out and identified for the first time in Greece.


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