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Studies on Ketosis in Dairy Cattle. XIII. Lipids and Ascorbic Acid in the Liver and Adrenals of Cows with Spontaneous and Fasting Ketosis¹

Department of Dairy Husbandry, Maryland Agricultural Experiment Station, College Park

ABSTRACT

The few reports available (1, 2, 3, 6, 9) relative to the condition of the liver of cows and ewes with ketosis deal primarily with the pathology of this organ. In these reports a fatty liver always has been observed to be a part of the ketotic syndrome so that it has been assumed rather generally that the livers of ketotic ruminants always are fatty. It also has been shown by Groenewald et al. (1) with ewes and by Shaw et al. (8) on cows, that the adrenals tend to be fatty. The adrenal also was implicated when an extract from it was found to promote recovery of cows with ketosis (Shaw, 7).

It was deemed advisable to conduct further studies to determine whether these abnormalities are associated with the early development of ketosis or are secondary to the inanition associated with ketosis.

EXPERIMENTAL PROCEDURE

Studies were conducted on cows exhibiting spontaneous ketosis and on cows which had been fed at either a medium or low plane of nutrition postpartum. The feeding and management of the experimental cows was discussed rather briefly in a previous report (5).

¹ Paper no. A271, contribution no. 2214 of the Maryland Agricultural Experiment Station.

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