Journal ArticleDOI
The relationship between post-parturient fatty liver and blood composition in dairy cows.
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TLDR
Using an equation based on blood concentrations of non-esterified fatty acids, glucose and aspartate aminotransferase it was possible to assign correctly three out of four cows to either the mild or moderate fatty liver groups.Abstract:
The blood composition of 45 cows with more than 20% fat in the liver (moderate fatty liver) was compared with that of 83 cows with less than 20% fat in the liver (mild fatty liver). The cows were sampled at 1 week after calving and were from three Friesian and one Guernsey herds. Blood concentrations of non-esterified fatty acids, bilirubin and aspartate amino-transferase were significantly elevated in cows with more than 20% in the liver whereas concentrations of glucose, cholesterol, albumin and magnesium were all significantly reduced. Blood samples from cows in two of the herds were analysed for ammonia, insulin and D(-)3-hydroxybutyrate. Cows with moderate fatty liver in these two herds had significantly lower insulin concentrations and higher D(-)3-hydroxybutyrate concentrations than those with mild fatty liver. Using an equation based on blood concentrations of non-esterified fatty acids, glucose and aspartate aminotransferase it was possible to assign correctly three out of four cows to either the mild or moderate fatty liver groups.read more
Citations
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Journal ArticleDOI
Etiology of Lipid-Related Metabolic Disorders in Periparturient Dairy Cows
TL;DR: Research to determine methods to reduce fatty acid delivery to the liver or to enhance hepatic export of very low density lipoprotein near calving is warranted because of increased fatty acid uptake by the liver, fatty acid esterification, and triglyceride storage.
Journal ArticleDOI
Effect of prepartum dry matter intake on liver triglyceride concentration and early lactation.
TL;DR: Cows that were force-fed prior to calving tended to yield milk with greater fat percentage and to yield more 3.5% FCM during the first 28 d postpartum.
Journal ArticleDOI
Peripartum Liver Triglyceride and Plasma Metabolites In Dairy Cows
TL;DR: This result implicated the acute rise in NEFA at calving as a contributing factor to triglyceride accumulation in the liver and the increasing plasma glucose and decreasing plasma BHBA prior to calving may have reflected metabolic changes toward gluconeogenesis.
Journal ArticleDOI
Relationship between overfeeding and overconditioning in the dry period and the problems of high producing dairy cows during the postparturient period
TL;DR: The changes in biochemical, endocrinological, and metabolic pathways are associated with delay of the first visible signs of oestrus, an increase in the interval from calving to first ovulation, a decrease in conception rate, and a prolonged calving interval.
References
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Applied Regression Analysis
Norman R. Draper,Harry Smith +1 more
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