+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Experiments on hypomagnesemia and ketosis in dairy cows

Experiments on hypomagnesemia and ketosis in dairy cows

Acta Agric Suecana 3(2): 89-120

Expts. on exptl. hypomagnesemia in dairy cows are descr., showing that the disease can be of nutritional origin. Mg deficiency and caloric shortage seem to be the most important causes. Seasonal hypomagnesemia is of little importance in well-fed cows with a daily intake of 20-25 g. of Mg. In cows with a restricted caloric intake, low values for serum Mg resulted when A. I. V. silage was fed. This indicates an acidotic effect on the serum Mg. There is a marked and significant individual variation in the serum Mg. Not all cows are equally inclined to develop hypomagnesemia. Dairy cows may have hypomagnesemia without exhibiting clinical symptoms of disease. The hypomagnesemia may lead to disease, viz., tetany and/or paresis. In the expts.,one cow on a Mg-deficient diet rich in cellulose died in tetany. One cow with restricted energy intake and A. I. V. silage had to be slaughtered due to the same disease. Two cows on the. same diet as the latter became paretic. Of 10 cows with a restricted energy intake, 7 had acetonuria and 6 of these cows had clinical ketosis symptoms. Ketosis was found on feeding A. I. V. as well as formic acid silage. It is probable that caloric shortage was an important cause of the great increase in the metabolic diseases, ketosis and tetany, in Norway during the war. In other animals, fasting may cause ketosis; practical experiences, too, indicate that fasting ketosis was common during the war. Although a restricted caloric intake is an important cause of ketosis, it is not the sole cause. The view that ketosis can be prevented by feeding sugar is untenable. There is no indication that carotene, P, Cu, and Co content in rations has any effect in preventing ketosis. The rations richest in cellulose were certainly the poorest in B vitamins. As these rations proved to be the least ketogenic; lack of these vits. seems not to have produced ketonemia. The authors' observations indicate the importance of a gradual increase in the amt. of feed given after calving. An irregular and rapid increase may lead to inappetence,which secondarily may cause metabolic diseases. It is necessary to be especially careful with voluminous feeds such as silage. Although caloric shortage is not the sole cause of metabolic diseases in dairy cows, the authors advise a normal feeding that meets the requirements of energy. To prevent metabolic diseases, they find it important to make a gradual transition in feeding as the animal changes from the dry period to lactation. Heavy feeding in the dry period is not recommended.

(PDF emailed within 1 workday: $29.90)

Accession: 013706726

Download citation: RISBibTeXText

Related references

Studies on ketosis in dairy cattle XIV An approach to the etiology of ketosis in dairy cows. Proc Amer Vet Med Assoc: 75, 1950

Studies on ketosis in dairy cattle. XIV. An approach to the etiology of ketosis in dairy cows. Proc. 87th Ann. Meet. Amer. Vet. med. Ass, Miami Beach, 73-75, 1951

Studies on the etiology and treatment of ketosis in dairy cows I Etiological considerations in bovine ketosis. Proc Amer Vet Med Assoc: 80, 1954

Studies on ketosis in dairy cattle. XI. Lipids, minerals and ascorbic acid in the blood of cows with spontaneous ketosis. Jour Dairy Sci 33(8): 496-507, 1950

Studies on ketosis in dairy cattle. 13. Lipids and ascorbic acid in the liver and adrenals of cows with spontaneous and fasting ketosis. J. Dairy Sci, 33: 515-525, 1950

Studies on ketosis in dairy cattle. XIII. Lipids and ascorbic acid in the liver and adrenals of cows with spontaneous and fasting ketosis. Jour Dairy Sci 33(8): 515-525, 1950

Bovine ketosis in high yielding dairy cows. The potential importance of the proportions of glucogenic, lipogenic and aminogenic nutrients in regard to the health and productivity of dairy cows. Fortschritte in der Tierphysiologie und Tierernahrung: 3-26, 1976

Experiments with lupins as food for dairy cows. 4. Use of the block method in experiments on dairy cows. (Beretn. Forsogslab., Kobenhavn, No. 177). Forsog med lupin som foder til malkekoer. 4. Om blokmetodens anvendelse i malkekvaegforsog, Beretn. Forsogslab., Kobenhavn, 57-89, 1938

Supplementation of propyleneglycol to dairy cows in periparturient period Effects on incidence of ketosis and ketosis consequence on milk yield, body condition score and first estrus post-partum. Journal of Dairy Science 81(SUPPL 1): 321, 1998

The effect of orally administered glycogenic substance to dairy cows. II. Single oral administration of large doses of Na propionate and glycerol to healthy, starved cows and to cows with ketosis. Nordisk Veterinaermedicin 24(9): 417-422, 1972

The effect of orally administered glycogenic substances to dairy cows I. Sodium propionate, glycerol and propylene glycol in healthy, normally fed cows. II. Single oral adminstration to starved and ketotic cows. III. Treatment of ketosis.. Nordisk Veterinarmedicin 24(9): 409-416; 417-422; 423-426, 1972

Ketone bodies in blood, milk and urine of healthy dairy cows and cows with primary ketosis. Schweizer Archiv fur Tierheilkunde 122(10): 553-564, 1980

American Dairy Science Association Symposium: Ketosis in dairy cows. J. Dairy Sci, 54: 6, 936-979, 1971