H. Hafs

H. Hafs, S. Innami, O. Mickelsen, 1973, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

Age and breed differences in thyroid hormones, insulin-like growth factor (IGF)-I and IGF binding proteins in female horses.

C. Scanes, H. Hafs, R. Christensen, 1996, Journal of animal science.

Pituitary and plasma growth hormone levels in bulls from birth to one year of age.

H. Hafs, K. Macmillan, R. Purchas, 1970, Journal of Animal Science.

Synchronization of ovulation and fertility in weaned sows treated with intravaginal triptorelin is influenced by timing of administration and follicle size.

S. Rodriguez-Zas, D. Greger, H. Hafs, 2011, Theriogenology.

Sperm Capacitation after Injection of LH or HCG in Rabbits 1

R. Wettemann, H. Hafs, 1970, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

Glycogen content of rabbit tubular genitalia from mating through implantation

H. Hafs, A. Gregoire, 1971, The Anatomical record.

Androgens in the Bovine Fetus and Dam 1

H. Hafs, Y. C. Lin, K. Mongkonpunya, 1975 .

Corpus luteum growth and progesterone synthesis during the bovine estrous cycle.

D. Armstrong, H. Hafs, 1968, Journal of animal science.

Levels of pituitary FSH and LH in heifers from birth through puberty.

C. Desjardins, H. Hafs, C Desjardins, 1968, Journal of animal science.

Estrous behavior and ovarian activity in peripuberal heifers.

L. Swanson, H. Hafs, D. Morrow, 1976, Theriogenology.

Bovine serum estrogens, progestins and glucocorticoids during late pregnancy parturition and early lactation.

E. Convey, H. Hafs, V. G. Smith, 1973, Journal of animal science.

Suckling and four-times daily milking: influence on ovulation, estrus and serum luteinizing hormone, glucocorticoids and prolactin in postpartum holsteins.

T. Carruthers, H. Hafs, 1980, Journal of animal science.

Release of Bovine Luteinizing Hormone by Purified Porcine and Synthetic Gonadotropin Releasing Hormone 1

J. Britt, E. Convey, H. Hafs, 1973, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

Control of estrus with prostaglandin F2alpha in mares: minimal effective dose and stage of estrous cycle.

H. Hafs, W. Oxender, P. Noden, 1975, American journal of veterinary research.

Endocrine, ovulatory and reproductive characteristics of sows treated with an intravaginal GnRH agonist.

D. Greger, H. Hafs, K. Stewart, 2010, Animal reproduction science.

A philosophy of research and graduate training

H. Hafs, 1990 .

Synchronization of Estrus in Beef Cows and Beef and Dairy Heifers with Intravaginal Progesterone Inserts and Prostaglandin F2α with or Without Gonadotropin-Releasing Hormone1

J. Boucher, H. Hafs, J. R. Chenault, 2003 .

Ovarian characteristics and serum LH, prolactin, progesterone and glucocorticoid from first estrus to breeding size in Holstein heifers.

L. Swanson, H. Hafs, D. Morrow, 1972, Journal of animal science.

IMMUNOCHEMICAL AND ELECTROPHORETIC PROPERTIES OF OESTROUS RABBIT UTERINE FLUID PROTEINS OBTAINED BY UTERINE LIGATION.

H. Hafs, K. Stevens, A. G. Hunter, 1964, Journal of reproduction and fertility.

Pituitary and hypothalamic endocrine changes during the bovine estrous cycle.

H. Hafs, A. J. Hackett, 1969, Journal of animal science.

Chronic recombinant equine somatotropin (eST) administration does not affect aerobic capacity or exercise performance in geriatric mares.

K. McKeever, H. Hafs, R. Christensen, 1998, Veterinary journal.

Carcass Quality of Ruminants A Review: Relationships of Some Hormones to Growth and

H. Hafs, A. M. Pearson, R. Purchas, 2011 .

Serum glucocorticoids, growth hormone and insulin and plasma glucose in bulls given prostaglandin E2 or F2 alpha 1.

R. Collier, T. Kiser, H. Hafs, 1979, Journal of animal science.

Serum levels of LH, prolactin and growth hormone after ejaculation in bulls.

E. Convey, H. Hafs, W. Oxender, 1971, Biology of reproduction.

Progesterone, LH, Estrus and Ovulation after Prostaglandin F2α in Heifers 1

T. Louis, H. Hafs, B. Seguin, 1973, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

Ovulation rates and litter sizes in sexually receptive and nonreceptive artificially inseminated rabbits given varying dosages of luteinizing hormone.

R. E. Staples, R. Foote, H. Hafs, 1963, Journal of reproduction and fertility.

Distribution of sperm in male rabbits after various ejaculation frequencies

C. Desjardins, K. Kirton, H. Hafs, 1967, The Anatomical record.

Serum luteinizing hormone, prolactin, glucocorticoid, and progestin in dairy cows from calving to gestation.

H. Hafs, L. A. Edgerton, 1973, Journal of dairy science.

Pituitary and hypothalamic endocrine changes associated with reproductive development of Holstein bulls.

H. Hafs, K. Macmillan, 1968, Journal of animal science.

A review: relationships of some hormones to growth and carcass quality of ruminants.

H. Hafs, A. M. Pearson, R. Purchas, 1971, Journal of animal science.

Photoelectric Method for Estimating the Concentration of Sperm in Boar Semen

R. Foote, H. Hafs, D. Young, 1960 .

Increased sperm output of rabbits and bulls treated with prostaglandin F2 alpha.

T. Louis, H. Hafs, N. B. Haynes, 1974, Prostaglandins.

Increased Sperm Numbers in the Deferent Duct after Prostaglandin F2α in Rabbits 1

T. Louis, H. Hafs, J. Stellflug, 1974, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

Gonadal and extra gonadal sperm numbers during reproductive development of holstein bulls.

H. Hafs, K. Macmillan, 1968, Journal of animal science.

Libido, Sperm Characteristics, Sperm Output, and Fertility of Mature Dairy Bulls Ejaculated Daily or Weekly for Thirty-Two Weeks

H. Hafs, R. Bratton, R. S. Hoyt, 1959 .

Estimation of Some Variance Components of Bovine Semen Criteria and Their Use in the Design of Experiments

H. Hafs, C. E. Henderson, B. W. Bratton, 1958 .

Sperm Output of Dairy Bulls with Varying Degrees of Sexual Preparation

C. Desjardins, H. Hafs, R. C. Knisely, 1962 .

Serum hormonal changes and testicular response to LH during puberty in bulls.

M. S. McCarthy, E. Convey, H. Hafs, 1979, Biology of reproduction.

Testicular function in bulls 10 weeks after unilateral vasectomy.

R. P. Amann, H. Hafs, W. Oxender, 1974, Journal of animal science.

Comparison of testosterone and androstenedione secretion in bulls given prostaglandin F2alpha luteinizing hormone.

T. Louis, T. Kiser, H. Hafs, 1978, Journal of animal science.

Serum luteinizing hormone, testosterone and androstenedione in pubertal and prepubertal bulls after gonadotropin releasing hormone.

H. Tucker, E. Convey, H. Hafs, 1975, Journal of animal science.

Studies on the effect of unilateral and bilateral castration on plasma testosterone and LH levels in the bull.

J. Manns, H. Hafs, N. B. Haynes, 1976, Journal of reproduction and fertility.

Luteinizing Hormone Release by Gonadotropin Releasing Hormone Before and After Castration in Bulls 1

T. Louis, E. Convey, H. Hafs, 1974, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

Increased blood LH and testosterone after administration of prostaglandin F2alpha in bulls.

T. Kiser, H. Hafs, W. Oxender, 1976, Prostaglandins.

Some Endocrine Influences on the Growth and Carcass Quality of Holstein Heifers

H. Tucker, H. Hafs, A. M. Pearson, 1971 .

Fertility of Cattle Inseminated with 12, 24 or 35 Million Sperm in 0.5 or 0.9 Milliliter

H. Hafs, L. J. Boyd, S. Cameron, 1970 .

Motility and Fertility during Post-Thawing Storage of Bovine Spermatozoa Frozen Concentrated, Thawed, and Re-Extended

C. Desjardins, H. Hafs, 1962 .

Low-fat meats : design strategies and human implications

H. Hafs, R. Zimbelman, 1994 .

Luteolysis Induced by Prostaglandin F2α Before and After Hysterectomy in Heifers

T. Louis, R. Gorewit, H. Hafs, 1977 .

Biochemical and morphological changes in bovine tubular genitalia during the estrous cycle.

H. Hafs, A. J. Hackett, 1969, Journal of animal science.

Estrus in Relation to Time of Administration of Prostaglandin F2α to Heifers1

J. Stevenson, J. Britt, H. Hafs, 1978 .

Intrauterine Administration of Prostaglandin F2α in Cows: Progesterone, Estrogen, LH, Estrus and Ovulation1

T. Louis, H. Hafs, D. Morrow, 1974 .

CONTROLLED BREEDING IN CATTLE: A REVIEW

J. Manns, H. Hafs, 1976 .

Variation of Estimated Numbers of Milk Somatic Cells Stained with Wright's Stain or Pyronin Y – Methyl Green Stain

M. Paape, W. W. Snyder, H. Hafs, 1963 .

Relationship of Feulgen-DNA in milk to number of milk somatic cells

M. Paape, H. Tucker, H. Hafs, 1963 .

Sperm output and serum testosterone in rabbits given prostaglandin F2α or E2

R. Collier, T. Kiser, M. S. McCarthy, 1978 .

Estrus, Ovulation, Progesterone and Luteinizing Hormone after Prostaglandin F2α in Mares 1

H. Hafs, W. Oxender, P. Noden, 1974, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

Galvanic separation of X- and Y-chromosome-bearing sperm.

H. Hafs, L. J. Boyd, 1971 .

Serum growth hormone, LH and prolactin in the pregnant cow.

H. Hafs, W. Oxender, L. A. Ederton, 1972, Journal of animal science.

Effect of prostaglandin E2 and F2alpha on serum luteinizing hormone, testosterone and prolactin in bulls.

R. Collier, T. Kiser, H. Hafs, 1978, Journal of animal science.

Release of pituitary hormones, cortisol, testosterone and insulin in response to prostaglandin F2 alpha given during intracarotid infusion of somatostatin in bulls.

J. Kesner, T. Kiser, H. Hafs, 1977, Journal of animal science.

Luteal function and estrus in peripubertal beef heifers treated with an intravaginal progesterone releasing device with or without a subsequent injection of estradiol.

R. Rasby, J. Kinder, J. Lynch, 1998, Theriogenology.

Luteolysis, growth hormone, glucocorticoids, prolactin and milk production in lactating dairy cows given prostaglandin F2alpha.

J. Britt, T. Carruthers, H. Hafs, 1978, Journal of animal science.

Some carcass quality and endocrine criteria of Holstein heifers fed melengestrol acetate.

D. E. Pritchard, H. Tucker, H. Hafs, 1971, Journal of animal science.

Effect of intracarotid infusion of prostaglandin F2alpha on plasma luteinizing hormone, testosterone and glucocorticoid concentrations in bulls.

T. Kiser, M. S. McCarthy, T. Carruthers, 1977, Journal of animal science.

Sperm output of rabbits at various ejaculation frequencies and their use in the design of experiments.

C. Desjardins, K. Kirton, H. Hafs, 1968, Journal of reproduction and fertility.

VOLUME, PH AND PROTEIN CONTENT OF FLUIDS FROM LIGATED UTERI OF OESTROUS RABBITS.

K. Kirton, H. Hafs, K. Stevens, 1964, Journal of reproduction and fertility.

Seminal Composition and Sexual Activity after Castration and Testosterone Replacement in Rabbits∗

C. Desjardins, K. Kirton, H. Hafs, 1969, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

Androgen Secretion and Spermatogenesis in Rats Following Semistarvation 1

H. Hafs, O. Mickelsen, T. Grewal, 1971, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

The Effect of Methods of Adding Egg Yolk and Monosaccharides on the Survival of Frozen Bull Spermatozoa

H. Hafs, F. I. Elliott, 1955 .

Luteinizing hormone, prolactin, and interval to ovulation after melengestrol acetate in cattle.

R. Wettemann, H. Hafs, D. Morrow, 1973, Journal of dairy science.

Guidelines for hormone radioimmunoassays.

G. Niswender, H. Hafs, P. Malven, 1977, Journal of animal science.

Semen Output of Rabbits Ejaculated After Varying Sexual Preparation.∗

H. Hafs, K. Macmillan, 1967, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

Reproductive organ DNA and RNA of male and female rats from birth to 100 days of age

C. Desjardins, H. Hafs, K. Macmillan, 1968, The Anatomical record.

Termination of a bovine pregnancy complicated by mummified foetus

H. Hafs, A. Talbot, 1974, The Veterinary Record.