Some Micronutrient Deficiencies in Sisal (Agave Sisalana)

1971 ◽  
Vol 7 (2) ◽  
pp. 113-122 ◽  
Author(s):  
A. Pinkerton

SUMMARYVisual symptoms of deficiencies of manganese, copper, zinc, iron, molybdenum and boron on sisal are described, and compared with those observed previously with deficiencies of macronutrients. The diagnostic value of symptoms is discussed, and tentative suggestions made for micronutrient concentrations in leaves for adequacy and deficiency.

1985 ◽  
Vol 40 (3) ◽  
pp. 511-513 ◽  
Author(s):  
J. Mašek ◽  
J. Gilka ◽  
H. Dočekalovà

ABSTRACTIn muscle and livers of steers given a diet with sodium monensinate a significant decrease in cadmium content was observed. The concentration of manganese, copper, zinc, lead and iron in the analysed organs varied inconsistently. It seems from the results that, in tissues, monensinate influences the metabolism not only of monovalent cations but of polyvalent cations as well.


2020 ◽  
Vol 203 ◽  
pp. 01023
Author(s):  
Elena Pilyukshina ◽  
Vladimir Khaustov ◽  
Aleksandr Ozhimkov ◽  
Valentina Rusanova ◽  
Alexey Popelyaev ◽  
...  

Nowadays, organic forms of trace elements, which have a high bioavailability, and, as a consequence, have a beneficial effect on the body of animals and birds, are increasingly used in feeding. In this area, quite a lot of research has been carried out on the use of chelates in poultry feeding, but mainly for broiler chickens and laying hens. Therefore, the purpose of our study was the use of organic forms of trace elements such as iron, manganese, copper, zinc, and selenium in the diets of rearing stock of the parent flock of the ROSS cross. The experiment was carried out in the production conditions of the Novosafonovskaya poultry farm of Kuzbasskiy Broiler LLC and at the Small animal science department of the Altai State Agrarian University in 2020. The results of the experiment indicate that replacing 50% of the need for inorganic forms of iron, manganese, copper, zinc and selenium with organic analogs contributed to an increase in live weight, absolute and average daily gains of rearing stock. There was an increase in the uniformity of the flock in terms of live weight, both males and females. The crop percent of poultry in the experimental group was 3.2-4.6% higher due to a decrease not only in mortality, but also in culled chickens.


2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. A121-A121
Author(s):  
Joseph Raco ◽  
Norhan Shamloul ◽  
Rohit Jain

Abstract Background: Adrenal insufficiency (AI) is a life-threatening disorder that is generally caused by primary adrenal failure or by hypothalamic-pituitary impairment of the corticotropic axis. Patients often present with fatigue, hypotension, anorexia, and weight loss. There are few reported cases of AI following bariatric surgery; a type of procedure designed to cause weight loss and anorexia - two of the cardinal symptoms of AI. Establishing a diagnosis of AI in patients who have undergone bariatric surgery can be challenging due to symptom overlap, but it is of critical importance given that an acute stressor has the potential to precipitate adrenal crisis with risk of death. Clinical Case: A 42-year-old woman presented 15-months after sleeve gastrectomy with biliopancreatic diversion and duodenal switch with nausea, vomiting, decreased oral intake, weight loss, weakness and fatigue. Her symptoms were severe, requiring admission to the hospital and were initially thought to be a result of her bariatric surgery. Initial intake exam and labs were notable for mild hypotension, persistent hypoglycemia with hemoglobin A1c <3.4%. Further evaluation revealed a low AM cortisol (5.5 μg/dL) and diagnosis of AI was confirmed by a failed cosyntropin stimulation test with cortisol levels of 7.0 μg/dL and 10.6 μg/dL 30- and 60-minutes after cosyntropin administration, respectively. Her diagnosis remained confounded by the presence of concomitant micronutrient deficiencies including copper, zinc, vitamin D and vitamin B6. Furthermore, she was found to have low insulin and c-peptide levels of 1 μU/mL and 0.4 ng/ml, respectively, despite persistent hypoglycemia. The patient was treated with enteral nutrition via nasojejunal feeds and glucocorticoid replacement therapy with daily oral hydrocortisone and fludrocortisone. Each of her symptoms improved after initiation of steroid replacement therapy and she was discharged home. Conclusion: Clinicians should keep a high degree of suspicion for adrenal insufficiency in patients who have undergone bariatric surgery due to the degree of symptom overlap in this population.


1986 ◽  
Vol 16 (1) ◽  
pp. 36-41 ◽  
Author(s):  
R. E. Carter ◽  
A. M. Scagel ◽  
K. Klinka

Nutritional problems, deficiencies of B and Zn in particular, have been tentatively identified as the cause of specific distorted growth symptoms in several young stands of Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco), western hemlock (Tsugaheterophylla (Raf.) Sarg.), and Pacific silver fir (Abiesamabilis (Dougl.) Forbes) in southwestern coastal British Columbia. The most common symptoms associated with these apparent micronutrient deficiencies include leader dieback and discolouration, multileadered and bushy crowns, and, in severely deficient trees, swollen and distorted stems. Visual symptoms of apparent B deficiency become obvious when foliar concentrations are <5.0 ppm; visual symptoms of apparent Zn deficiency are less easily recognized, usually occurring when foliar Zn levels are less than approximately 9.0 ppm. Low foliar concentrations of B were often associated with low levels of Ca and Mg. Foliar B concentration was also correlated with total foliar S. Temporal variation in foliar nutrient levels, examined over 3 years, was quite high with an apparent strong relationship to growing season precipitation. This suggests that deficiencies of B and (or) Zn may be acute rather than chronic, with the appearance of periodic acute deficiencies being influenced by growing season soil moisture supply.


1981 ◽  
Vol 61 (4) ◽  
pp. 955-959 ◽  
Author(s):  
M. IVAN ◽  
D. M. VEIRA

Four sheep, each prepared with a rumen fistula and re-entrant cannula in the proximal duodenum, were fed hourly diets containing 7, 11, 15 and 19% crude protein in a 4 × 4 latin square experiment. Solubilities of manganese, copper, zinc and iron were much lower in the rumen than in aqueous extracts of the diets but those of manganese and zinc dramatically increased on passage through the abomasum. There was no effect of dietary protein on the solubility of manganese, zinc and iron in the rumen and abomasal digesta flowing into the duodenum. The solubility of copper was proportionally decreased in both rumen and abomasal digesta with the increasing dietary protein. It is concluded that the dietary concentration of protein is one of the important factors affecting the solubility of copper in the stomach of ruminants.


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