Reproductive Loss in High-Producing Dairy Cattle: Where Will It End?

al-Katanani, 1999, Factors affecting seasonal variation in 90-day nonreturn rate to first service in lactating Holstein cows in a hot climate, J. Dairy Sci., 82, 2611, 10.3168/jds.S0022-0302(99)75516-5

Allrich, 1994, Endocrine and neural control of estrus in dairy cows, J. Dairy Sci., 77, 2738, 10.3168/jds.S0022-0302(94)77216-7

Austin, 1999, Effect of duration of dominance of the ovulatory follicle on onset of estrus and fertility in heifers, J. Anim. Sci., 77, 2219, 10.2527/1999.7782219x

Ayalon, 1978, A review of embryonic mortality in cattle, J. Reprod. Fertil., 54, 483, 10.1530/jrf.0.0540483

Bauman, 1980, Partitioning of nutrients during pregnancy and lactation: a review of mechanisms involving homeostasis and homeorhesis, J. Dairy Sci., 63, 1514, 10.3168/jds.S0022-0302(80)83111-0

Bauman, 1999, Bovine somatotropin and lactation: from basic science to commercial application, Domest. Anim. Endocrinol., 17, 101, 10.1016/S0739-7240(99)00028-4

Bauman, 1999, Production responses to bovine somatotropin in northeast dairy herds, J. Dairy Sci., 82, 2564, 10.3168/jds.S0022-0302(99)75511-6

Beal, 1978, Influence of dietary energy intake on bovine pituitary and luteal function, J. Anim. Sci., 46, 181, 10.2527/jas1978.461181x

Beam, S. W. 1995. Follicular Development in Postpartum Cattle: Effects of Energy Balance and Dietary Lipid. Ph.D. Dissertation, Cornell University, Ithaca, NY.

Beam, 1999, Effects of energy balance on follicular development and first ovulation in postpartum dairy cows, J. Reprod. Fertil. Suppl., 54, 411

Beerepoot, 1992, The economics of naturally occurring twinning in dairy cattle, J. Dairy Sci., 75, 1044, 10.3168/jds.S0022-0302(92)77848-5

Bilby, 1998, Acomparative study of ovarian function in American (US) and New Zealand (NZ) Friesian lactating dairy cows, J. Anim. Sci., 76, 222

Bilby, 1999, Plasma GH, IGF-I, and conception rate in cattle treated with low doses of recombinant bovine GH, Theriogenology., 51, 1285, 10.1016/S0093-691X(99)00072-2

Bossis, 1999, Nutritionally induced anovulation in beef heifers: ovarian and endocrine function preceding cessation of ovulation, J. Anim. Sci., 77, 1536, 10.2527/1999.7761536x

Bradley, 2000, 1000 years of climate change, Science, 288, 1353, 10.1126/science.288.5470.1353

Britt, 1994, Follicular development and fertility: potential impacts of negative energy balance, 103

Britt, 1986, Determinants of estrous behavior in lactating Holstein cows, J. Dairy Sci., 69, 2195, 10.3168/jds.S0022-0302(86)80653-1

Butler, 1998, Review: effect of protein nutrition on ovarian and uterine physiology in dairy cattle, J. Dairy Sci., 81, 2533, 10.3168/jds.S0022-0302(98)70146-8

Butler, 2000, Nutritional interactions with reproductive performance in dairy cattle, Anim. Reprod. Sci., 60–61, 449, 10.1016/S0378-4320(00)00076-2

Butler, 1989, Interrelationships between energy balance and postpartum reproductive function in dairy cattle, J. Dairy Sci., 72, 767, 10.3168/jds.S0022-0302(89)79169-4

Casida, 1961, Present status of the repeat-breeder cow problem, J. Dairy Sci., 44, 2323, 10.3168/jds.S0022-0302(61)90063-7

Christian, 1948, The effects of progesterone in altering the estrous cycle of the cow, J. Anim. Sci., 7, 540

Cole, 1991, Effect of recombinantly-derived bovine somatotropin on reproductive performance of dairy cattle, Theriogenology, 36, 573, 10.1016/0093-691X(91)90396-U

Collier, 1997, Post-approval evaluation of POSILAC bovine somatotropin in 28 commercial dairy herds, J. Dairy Sci., 80, 169

Crain, 1998, Reptiles as models of contaminant-induced endocrine disruption, Anim. Reprod. Sci., 53, 77, 10.1016/S0378-4320(98)00128-6

de Vries, 2000, Energy balance of dairy cattle in relation to milk production variables and fertility, J. Dairy Sci., 83, 62, 10.3168/jds.S0022-0302(00)74856-9

DeLorenzo, 1992, Optimizing model: insemination, replacement, seasonal production, and cash flow, J. Dairy Sci., 75, 885, 10.3168/jds.S0022-0302(92)77829-1

Dematawewa, 1998, Genetic and phenotypic parameters for 305-day yield, fertility, and survival in Holsteins, J. Dairy Sci., 81, 2700, 10.3168/jds.S0022-0302(98)75827-8

Dransfield, 1998, Timing of insemination for dairy cows identified in estrus by a radiotelemetric estrus detection system, J. Dairy Sci., 81, 1874, 10.3168/jds.S0022-0302(98)75758-3

Dunklee, 1994, Comparison of Holsteins selected for high and average milk production. 2. Health and reproductive response to selection for milk, J. Dairy Sci., 77, 3683, 10.3168/jds.S0022-0302(94)77313-6

Emanuelson, 1998, Incidences and effects of diseases on the performance of Swedish dairy herds stratified by production, J. Dairy Sci., 81, 2376, 10.3168/jds.S0022-0302(98)70129-8

Fricke, 1999, Effect of milk production on the incidence of double ovulation in dairy cows, Theriogenology, 52, 1133, 10.1016/S0093-691X(99)00205-8

Garverick, 1997, Ovarian follicular cysts in dairy cows, J. Dairy Sci., 80, 995, 10.3168/jds.S0022-0302(97)76025-9

Goldberg, 1992, The influence of intensively managed rotational grazing, traditional continuous grazing, and confinement housing on bulk tank milk quality and udder health, J. Dairy Sci., 75, 96, 10.3168/jds.S0022-0302(92)77743-1

Gombe, 1973, Plasma luteinizing hormone (LH) and progesterone levels in heifers on restricted energy intakes, J. Anim. Sci., 37, 728, 10.2527/jas1973.373728x

Gröhn, 2000, Epidemiology of reproductive performance in dairy cows, Anim. Reprod. Sci., 60, 605, 10.1016/S0378-4320(00)00085-3

Gustafsson, 1985, Embryonic mortality in heifers after artificial insemination and embryo transfer: differences between virgin andrepeat breeder heifers, Res. Vet. Sci., 39, 271, 10.1016/S0034-5288(18)31712-0

Gwazdauskas, 2000, Impact of follicular aspiration on folliculogenesis as influenced by dietary energy and stage of lactation, J. Dairy Sci., 83, 1625, 10.3168/jds.S0022-0302(00)75031-4

Hageman, 1991, Reproductive performance in genetic lines selected for high or average milk yield, J. Dairy Sci., 74, 4366, 10.3168/jds.S0022-0302(91)78633-5

Hansen, 2000, Consequences of selection for milk yield from a geneticist's viewpoint, J. Dairy Sci., 83, 1145, 10.3168/jds.S0022-0302(00)74980-0

Hermas, 1987, Effects of mild inbreeding on productive and reproductive performance of Guernsey cattle, J. Dairy Sci., 70, 712, 10.3168/jds.S0022-0302(87)80062-0

Heuer, 1999, Postpartum body condition score and results from the first test day milk as predictors of disease, fertility, yield, and culling in commercial dairy herds, J. Dairy Sci., 82, 295, 10.3168/jds.S0022-0302(99)75236-7

Johnson, 1999, The effect of trematode infection on amphibian limb development and survivorship, Science, 284, 802, 10.1126/science.284.5415.802

Kaneene, 1994, Epidemiological study of metritis in Michigan dairy cattle, Vet. Res., 25, 253

Kinsel, 1998, Risk factors for twinning in dairy cows, J. Dairy Sci., 81, 989, 10.3168/jds.S0022-0302(98)75659-0

Kirby, 1996, Effects of growth hormone and pregnancy on expression of growth hormone receptor, insulin-like growth factor-I, and insulin-like growth factor binding protein-2 and -3 genes in bovine uterus, ovary, and oviduct, Biol. Reprod., 55, 996, 10.1095/biolreprod55.5.996

Kirby, 1997, Follicular function in lactating dairy cows treated with sustained-release bovine somatotropin, J. Dairy Sci., 80, 273, 10.3168/jds.S0022-0302(97)75935-6

Kummerfeld, 1978, Embryonic mortality in dairy cows estimated by nonreturns to service, estrus, and cyclic milk progesterone patterns, J. Dairy Sci., 61, 1773, 10.3168/jds.S0022-0302(78)83801-6

Lamming, 1998, The use of milk progesterone profiles to characterise components of subfertility in milked dairy cows, Anim. Reprod. Sci., 52, 175, 10.1016/S0378-4320(98)00099-2

Lauderdale, 1972, Effects of PGF2α on pregnancy and estrous cycle of cattle, J. Anim. Sci., 35, 246

Loeffler, 1999, The effects of time of disease occurrence, milk yield, and body condition on fertility of dairy cows, J. Dairy Sci., 82, 2589, 10.3168/jds.S0022-0302(99)75514-1

Loeffler, 1999, Use of AI technician scores for body condition, uterine tone and uterine discharge in a model with disease and milk production parameters to predict pregnancy risk at first AI in Holstein dairy cows, Theriogenology, 51, 1267, 10.1016/S0093-691X(99)00071-0

Lozano, 1998, Effect of undernutrition on the distribution of progesterone in the uterus of ewes during the luteal phase ofthe estrous cycle, Theriogenology, 49, 539, 10.1016/S0093-691X(98)00005-3

Lucy, 2000, Regulation of ovarian follicular growth by somatotropin and insulin-like growth factors in cattle, J. Dairy Sci., 83, 1635, 10.3168/jds.S0022-0302(00)75032-6

Lucy, 1986, Controlling first service and calving interval by prostaglandin F2α, gonadotropin-releasing hormone, and timed insemination, J. Dairy Sci., 69, 2186, 10.3168/jds.S0022-0302(86)80652-X

Lucy, 1992, Influence of diet composition, dry matter intake, milk production, and energy balance on time of postpartum ovulation and fertility in dairy cows, Anim. Prod., 54, 323, 10.1017/S0003356100020778

Lucy, 1998, Reproductive endocrinology of lactating dairy cows selected for increased milk production, J. Anim. Sci., 76, 296

Macmillan, 1996, The effects of lactation on the fertility of dairy cows, Aust. Vet. J., 73, 141, 10.1111/j.1751-0813.1996.tb10007.x

Mann, 1999, The regulation of interferontau production and uterine hormone receptors during early pregnancy, J. Reprod. Fertil. Suppl., 54, 317

Mapletoft, 1986, Effects of clenbuterol, body condition, and nonsurgical embryo transfer equipment on pregnancy rates in bovine recipients, Theriogenology, 25, 172, 10.1016/0093-691X(86)90226-8

Marion, 1968, Factors affecting bovine ovarian activity after parturition, J. Anim. Sci., 27, 1621, 10.2527/jas1968.2761621x

Moreira, 2000, Use of bovine somatotropin in lactating dairy cows receiving timed artificial insemination, J. Dairy Sci., 83, 1237, 10.3168/jds.S0022-0302(00)74990-3

Morell, 1999, Are pathogens felling frogs?, Science, 284, 728, 10.1126/science.284.5415.728

Morrow, 1966, Postpartum ovarian activity and uterine involution in dairy cattle, J. Am. Vet. Med. Assoc., 149, 1596

Nebel, 1998, Evaluation of systematic breeding programs for lactating dairy cows: a review, J. Dairy Sci., 81, 1169, 10.3168/jds.S0022-0302(98)75679-6

Nebel, 1993, Interactions of high milk yield and reproductive performance in dairy cows, J. Dairy Sci., 76, 3257, 10.3168/jds.S0022-0302(93)77662-6

Nebel, 2000, Automated electronic systems for the detection of oestrus and timing of AI in cattle, Anim. Reprod. Sci., 60-61, 713, 10.1016/S0378-4320(00)00090-7

O’Farrell, 1999, Trends in first service calving rates in Irish dairy herds 1991–1996, 52

Opsomer, 1998, An analysis of ovarian dysfunction in high yielding dairy cows after calving based on progesterone profiles, Reprod. Domest. Anim., 33, 193, 10.1111/j.1439-0531.1998.tb01342.x

Opsomer, 2000, Risk factors for post partum ovarian dysfunction in high producing dairy cows in Belgium: a field study, Theriogenology, 53, 841, 10.1016/S0093-691X(00)00234-X

Parr, 1992, Nutrition-progesterone interactions during early pregnancy in sheep, Reprod. Fertil. Dev., 4, 297, 10.1071/RD9920297

Philipsson, 1981, Genetic aspects of female fertility in dairy cattle, Livest. Prod. Sci., 8, 307, 10.1016/0301-6226(81)90049-X

Philipsson, 1994, Present and future uses of selection index methodology in dairy cattle, J. Dairy Sci., 77, 3252, 10.3168/jds.S0022-0302(94)77266-0

Pope, 1982, Distribution of progesterone in the uterus, broad ligament, and uterine arteries of beef cows, Anat. Rec., 203, 245, 10.1002/ar.1092030206

Pursley, 1997, Reproductive management of lactating dairy cows using synchronization of ovulation, J. Dairy Sci., 80, 301, 10.3168/jds.S0022-0302(97)75938-1

Pursley, 1997, Pregnancy rates per artificial insemination for cows and heifers inseminated at a synchronized ovulation or synchronized estrus, J. Dairy Sci., 80, 295, 10.3168/jds.S0022-0302(97)75937-X

Pursley, 1998, Effect of time of artificial insemination on pregnancy rates, calving rates, pregnancy loss, and gender ratio after synchronization of ovulation in lactating dairy cows, J. Dairy Sci., 81, 2139, 10.3168/jds.S0022-0302(98)75790-X

Rabiee, 1999, Relationships among metabolites influencing ovarian function in the dairy cow, J. Dairy Sci., 82, 39, 10.3168/jds.S0022-0302(99)75206-9

Rabiee, 2000, Effect of level of feed intake on plasma progesterone concentrations in desolrelin-implanted dairy cows treated with a CIDR device, J. Anim. Sci., 78, 221

Revah, 1996, Prolonged dominance of follicles and reduced viability of bovine oocytes, J. Reprod. Fertil, 106, 39, 10.1530/jrf.0.1060039

Risco, 1999, Clinical mastitis associated with abortion in dairy cows, J. Dairy Sci., 82, 1684, 10.3168/jds.S0022-0302(99)75397-X

Robinson, 2000, The expression of the IGF system in the bovine uterus throughout the oestrous cycle and early pregnancy, J. Endocrinol., 165, 231, 10.1677/joe.0.1650231

Rocha, 1998, High environmental temperature and humidity decrease oocyte quality in Bos taurus but not in Bos indicus cows, Theriogenology, 49, 657, 10.1016/S0093-691X(98)00016-8

Roche, 1977, Control of ovulation and fixed time insemination in heifers following cloprostenol, Vet. Rec., 100, 468, 10.1136/vr.100.22.468

Roche, 1999, Regulation of follicle waves to maximize fertility in cattle, J. Reprod. Fertil. Suppl., 54, 61

Roche, 2000, Reproductive management of postpartum cows, Anim. Reprod. Sci., 60–61, 703, 10.1016/S0378-4320(00)00107-X

Royal, 2000, Declining fertility in dairy cattle: changes in traditional and endocrine parameters of fertility, Anim. Sci., 70, 487, 10.1017/S1357729800051845

Saacke, 2000, Relationship of seminal traits and insemination time to fertilization rate and embryo quality, Anim. Reprod. Sci., 60–61, 663, 10.1016/S0378-4320(00)00137-8

Sangsritavong, 2000, Liver blood flow and steroid metabolism are increased by both acute feeding and hypertrophy of the digestive tract, J. Anim. Sci., 78, 221

Sartori, 2000, Differences between lactating cows and nulliparous heifers in follicular dynamics, luteal growth, and serum steroid concentrations, J. Anim. Sci., 78, 212

Schmitt, 1996, Use of a gonadotropin-releasing hormone agonist or human chorionic gonadotropin for timed insemination in cattle, J. Anim. Sci., 74, 1084, 10.2527/1996.7451084x

Silvia, 1998, Changes in reproductive performance of Holstein dairy cows in Kentucky from 1972 to 1996, J. Dairy Sci., 81, 244

Silvia, 1991, Hormonal regulation of uterine secretion of prostaglandin F2α during luteolysis in ruminants, Biol. Reprod., 45, 655, 10.1095/biolreprod45.5.655

Smith, 1995, Fate of the dominant follicle, embryonal survival, and pregnancy rates in dairy cattle treated with prostaglandin F2a and progestins in the absence or presence of a functional corpus luteum, J. Anim. Sci., 73, 3743, 10.2527/1995.73123743x

Snijders, 2000, Effect of genetic merit, milk yield, body condition and lactation number on in vitro oocyte development in dairy cows, Theriogenology, 53, 981, 10.1016/S0093-691X(00)00244-2

Stahl, 1999, Characteristics of Minnesota dairy farms that significantly increased milk production from 1989–1993, J. Dairy Sci., 82, 45, 10.3168/jds.S0022-0302(99)75207-0

Staples, 1990, Relationship between ovarian activity and energy status during the early postpartum period of high producing dairy cows, J. Dairy Sci., 73, 938, 10.3168/jds.S0022-0302(90)78750-4

Stevenson, 1999, Can you have good reproduction and high milk yield?, Hoard's Dairyman, 144, 536

Stevenson, 2000, Are your cows cycling; if not why?, Hoard's Dairyman, 145, 202

Stevenson, 2000, Synchronizing estrus and (or) ovulation in beef cows after combinations of GnRH, norgestomet, and prostaglandin F2α with or without timed insemination, J. Anim. Sci., 78, 1747, 10.2527/2000.7871747x

Sturman, 2000, Importance of inseminating only cows in estrus, Theriogenology, 53, 1657, 10.1016/S0093-691X(00)00305-8

Twagiramungu, 1995, Synchronization of ovarian follicular waves with a gonadotropin-releasing hormone agonist to increase the precision of estrus in cattle: a review, J. Anim. Sci., 73, 3141, 10.2527/1995.73103141x

Vailes, 1990, Influence of footing surface on mounting and other sexual behaviors of estrual Holstein cows, J. Anim. Sci., 68, 2333, 10.2527/1990.6882333x

Van Cleeff, 1996, Effects of administering progesterone at selected intervals after insemination of syncrhonized heifers on pregnancy rates and resynchronization of returns to service, Theriogenology, 46, 1117, 10.1016/S0093-691X(96)00284-1

Vasconcelos, 1997, Pregnancy rate, pregnancy loss, and response to heat stress after AI at 2 different times from ovulation in dairy cows, Biol. Reprod., 56, 140

Watson, 1999, IGF paracrine and autocrine interactions between conceptus and oviduct, J. Reprod. Fertil. Suppl, 54, 303

Watson, 1953, Molecular structure of nucleic acids, Nature, 171, 737, 10.1038/171737a0

Weems, 1988, Distribution of progesterone to the uterus and associated vasculature of cattle, Endocrinol. Jpn., 35, 625, 10.1507/endocrj1954.35.625

Weems, 1989, Progesterone in uterine and arterial tissue and in jugular and uterine venous plasma of sheep, Biol. Reprod., 41, 1, 10.1095/biolreprod41.1.1

Wilson, 1998, Effects of controlled heat stress on ovarian function of dairy. 2. cattle Heifers, J. Dairy Sci., 81, 2132, 10.3168/jds.S0022-0302(98)75789-3

Wilson, 1998, Effects of controlled heat stress on ovarian function of dairy cattle. 1. Lactating cows, J. Dairy Sci., 81, 2124, 10.3168/jds.S0022-0302(98)75788-1

Wolfenson, 2000, Impaired reproduction in heat-stressed cattle: basic and applied aspects, Anim. Reprod. Sci., 60–61, 535, 10.1016/S0378-4320(00)00102-0