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The effect of 17β-estradiol on lactose in plasma and urine in dairy cows in late lactation
- Source :
- The Journal of dairy research. 86(2)
- Publication Year :
- 2019
-
Abstract
- The aim of this study was to investigate the effect of 17β-estradiol on mammary tight junctions in cows in late lactation. The experiment included five non-pregnant cows around day 290 in lactation. The cows received injections of 17β-estradiol for six days. The effect of exogenous 17β-estradiol on milk yield, milk composition and lactose in plasma and lactose in urine was investigated before, during and after the treatment. Milk yield decreased after 17β-estradiol injections and lactose in plasma and urine increased, showing an effect on the integrity of the mammary tight junctions. However, there was a delay between hormone injections and the decrease in milk yield and opening of tight junctions, indicating that other factors are involved. A high correlation between lactose in urine and blood plasma was found. More than 30% of the total lactose production was lost in urine after 17β-estradiol treatment.
- Subjects :
- 040301 veterinary sciences
Lactose
Urine
Tight Junctions
0403 veterinary science
chemistry.chemical_compound
Animal science
Milk yield
Lactation
Blood plasma
medicine
Animals
Pregnancy
Tight junction
Estradiol
0402 animal and dairy science
food and beverages
04 agricultural and veterinary sciences
General Medicine
medicine.disease
040201 dairy & animal science
medicine.anatomical_structure
Milk
chemistry
Animal Science and Zoology
Composition (visual arts)
Cattle
Female
Food Science
Subjects
Details
- ISSN :
- 14697629
- Volume :
- 86
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- The Journal of dairy research
- Accession number :
- edsair.doi.dedup.....7f6a58714cea92bd265aaa565dfe77b3