Relationships between luteal activity, fertility, blood metabolites and body condition score in multiparous Estonian Holstein dairy cows under different management

The objective was to compare the relationships between luteal activity and fertility, and relate these parameters to metabolic indices and body condition changes in multiparous Estonian Holstein cows on two commercial dairy farms under different management and levels of production and nutrition (hig...

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Bibliographic Details
Published in:Journal of dairy research 2008-11, Vol.75 (4), p.485-490
Main Authors: Samarütel, Jaak, Waldmann, Andres, Ling, Katri, Jaakson, Hanno, Kaart, Tanel, Leesmäe, Andres, Kärt, Olav
Format: Article
Language:English
Subjects:
Animal productions
Animals
Biological and medical sciences
Blood
blood metabolites
Body Composition
body condition score
Cattle
Cholesterol - blood
Commercial farms
Corpus Luteum - physiology
Dairy cattle
Dairy farms
Dairying - methods
Energy balance
Estonia
Fatty Acids, Nonesterified - blood
Female
Fertility
Fertility - physiology
Food industries
Fundamental and applied biological sciences. Psychology
Health Status
Ketone Bodies - blood
Ketones
Lactation - physiology
Metabolites
Milk - secretion
Milk and cheese industries. Ice creams
Milk production
milk progesterone
Parity
Parturition - physiology
Pregnancy
Reproduction
Statistical analysis
Terrestrial animal productions
Vertebrates
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Summary:The objective was to compare the relationships between luteal activity and fertility, and relate these parameters to metabolic indices and body condition changes in multiparous Estonian Holstein cows on two commercial dairy farms under different management and levels of production and nutrition (higher, H, n=54 (71 lactations) and lower, L, n=39 (39 lactations)). For statistical analysis cows were categorized according to their milk progesterone (P4) profiles as follows: normal ovarian function; delayed start of cyclicity (DC) (interval from calving to first luteal response (P4⩾5 ng/ml up to and more than 50 d respectively, followed by regular cyclicity); cessation of luteal activity (prolonged interluteal interval, P4
ISSN:0022-0299
1469-7629
DOI:10.1017/S0022029908003610