Relationship of nonreturn rates of dairy bulls to binding affinity of heparin to sperm

Journal Article · Thu Aug 01 00:00:00 EDT 1985 · J. Dairy Sci.; (United States)

DOI:https://doi.org/10.3168/jds.S0022-0302(85)81070-5· OSTI ID:6255948

Marks, J L; Ax, R L

The binding of the glycosaminoglycan (3H) heparin to bull spermatozoa was compared with nonreturn rates of dairy bulls. Semen samples from five bulls above and five below an average 71% nonreturn rate were used. Samples consisted of first and second ejaculates on a single day collected 1 d/wk for up to 5 consecutive wk. Saturation binding assays using (TH) heparin were performed to quantitate the binding characteristics of each sample. Scatchard plot analyses indicated a significant difference in the binding affinity for (TH) heparin between bulls of high and low fertility. Dissociation constants were 69.0 and 119.3 pmol for bulls of high and low fertility, respectively. In contrast, the number of binding sites for (TH) heparin did not differ significantly among bulls. Differences in binding affinity of (TH) heparin to bull sperm might be used to predict relative fertility of dairy bulls.

• Research Organization: Univ. of Wisconsin, Madison, WI (United States)
• OSTI ID: 6255948
• Journal Information: J. Dairy Sci.; (United States), Vol. 8
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
HEPARIN
CONFIGURATION INTERACTION
SPERMATOZOA
TRITIUM COMPOUNDS
CATTLE
FERTILITY
AMINES
ANIMALS
ANTICOAGULANTS
CARBOHYDRATES
DOMESTIC ANIMALS
DRUGS
GAMETES
GERM CELLS
HEMATOLOGIC AGENTS
LABELLED COMPOUNDS
MAMMALS
MUCOPOLYSACCHARIDES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
POLYSACCHARIDES
RUMINANTS
SACCHARIDES
VERTEBRATES
551001* - Physiological Systems- Tracer Techniques