Free access
Issue
Vet. Res.
Volume 34, Number 1, January-February 2003
Page(s) 11 - 26
DOI http://dx.doi.org/10.1051/vetres:2002054
How to cite this article Vet. Res. (2003) 11-26
  1. Ahmadzadeh A., Barnes M.A., Pearson R.E., Effect of naloxone on serum luteinizing hormone concentration in anovulatory Holstein cows during the early postpartum period, Domest. Anim. Endocrinol. 15 (1998) 177-181 [CrossRef] [PubMed].
  2. Allrich R.D., Estrous behavior and detection in cattle, Vet. Clin. North Am. Food Anim. Pract. 9 (1993) 249-262 [PubMed].
  3. Andrews A.H., Laven R., Maisey I., Treatment and control of an outbreak of fat cow syndrome in a large dairy herd, Vet. Rec. 129 (1991) 216-219 [PubMed].
  4. Armstrong D.G., McEvoy T.G., Baxter G., Robinson J.J., Hogg C.O., Woad K.J., Webb R., Sinclair K.D., Effect of dietary energy and protein on bovine follicular dynamics and embryo production in vitro: associations with the ovarian insulin-like growth factor system, Biol. Reprod. 64 (2001) 1624-1632 [CrossRef] [PubMed].
  5. Barkema H.W., Westrik J.D., van Keulen K.A.S., Schukken Y.H., Brand A., The effects of lameness on reproductive performance, milk production and culling in Dutch dairy farms, Prev. Vet. Med. 20 (1994) 249-259 [CrossRef].
  6. Bartlett P.C., Ngategize P.K., Kaneene J.B., Cystic follicular disease in Michigan Holstein-Friesian cattle: Incidence, descriptive epidemiology and economic impact., Prev. Vet. Med. 4 (1986) 15 [CrossRef].
  7. Beam S.W., Butler W.R., Energy balance and ovarian follicle development prior to the first ovulation postpartum in dairy cows receiving three levels of dietary fat, Biol. Reprod. 56 (1997) 133-142 [CrossRef] [PubMed].
  8. Beam S.W., Butler W.R., Effects of energy balance on follicular development and first ovulation in postpartum dairy cows, J. Reprod. Fertil. Suppl. 54 (1999) 411-424 [PubMed].
  9. Block S.S., Butler W.R., Ehrhardt R.A., Bell A.W., Van Amburgh M.E., Boisclair Y.R., Decreased concentration of plasma leptin in periparturient dairy cows is caused by negative energy balance, J. Endocrinol. 171 (2001) 339-348 [CrossRef] [PubMed].
  10. Bonczek R.R., Young C.W., Wheaton J.E., Miller K.P., Responses of somatotropin, insulin, prolactin, and thyroxine to selection for milk yield in holsteins, J. Dairy Sci. 71 (1988) 2470-2479.
  11. Brand A., Varner M.A., Monitoring reproductive performance, in: Brand A., Noordhuizen J.P.T.M., Schukken Y.H. (Eds.), Herd health and production management in dairy practice, Wageningen Academic Publishers, Wageningen, 1996, pp. 283-350.
  12. Britt J.H., Impacts of early postpartum metabolism on follicular development and fertility, Bov. Proc. 24 (1992) 39-43.
  13. Brogan R.S., Mitchell S.E., Trayhurn P., Smith M.S., Suppression of leptin during lactation: contribution of the suckling stimulus versus milk production, Endocrinology 140 (1999) 2621-2627 [CrossRef] [PubMed].
  14. Bruinenberg M.H., van der Honing Y., Agnew R.E., Yan T., van Vuuren A.M., Valk H., Energy metabolism of dairy cows fed on grass, Livest. Prod. Sci. 75 (2002) 117-128 [CrossRef].
  15. Butler W.R., Nutritional interactions with reproductive performance in dairy cattle, Anim. Reprod. Sci. 60-61 (2000) 449-457 [CrossRef] [PubMed].
  16. Butler W.R., Everett R.W., Coppock C.E., The relationships between energy balance, milk production and ovulation in postpartum Holstein cows, J. Anim. Sci. 53 (1981) 742-748 [PubMed].
  17. Butler W.R., Smith R.D., Interrelationships between energy balance and postpartum reproductive function in dairy cattle, J. Dairy Sci. 72 (1989) 767-783 [PubMed].
  18. Cameron R.E., Dyk P.B., Herdt T.H., Kaneene J.B., Miller R., Bucholtz H.F., Liesman J.S., Vandehaar M.J., Emery R.S., Dry cow diet, management, and energy balance as risk factors for displaced abomasum in high producing dairy herds, J. Dairy Sci. 81 (1998) 132-139 [PubMed].
  19. Campbell B.K., Scaramuzzi R.J., Webb R., Control of antral follicle development and selection in sheep and cattle, J. Reprod. Fertil. Suppl. 49 (1995) 335-350 [PubMed].
  20. Canfield R.W., Butler W.R., Energy balance and pulsatile LH secretion in early postpartum dairy cattle, Domest. Anim. Endocrinol. 7 (1990) 323-330 [CrossRef] [PubMed].
  21. Cunningham M.J., Clifton D.K., Steiner R.A., Leptin's actions on the reproductive axis: perspectives and mechanisms, Biol. Reprod. 60 (1999) 216-222 [CrossRef] [PubMed].
  22. Darwash O.A., Lamming G.E., Woolliams J.A., The phenotypic association between the interval to post-partum ovulation and traditional measures of fertility in dairy cattle, Anim. Sci. 65 (1997) 9-16.
  23. De Vries M.J., van der Beek S., Kaal-Lansbergen L.M.T.E., Ouweltjes W., Wilmink J.B.M., Modeling of energy balance in early lactation and the effect of energy deficits in early lactation on first detected estrus postpartum in dairy cows, J. Dairy Sci. 82 (1999) 1927-1934 [PubMed].
  24. De Wit A.A., Cesar M.L., Kruip T.A., Effect of urea during in vitro maturation on nuclear maturation and embryo development of bovine cumulus-oocyte-complexes, J. Dairy Sci. 84 (2001) 1800-1804 [PubMed].
  25. Dijkhuizen A.A., Jalvingh A.W., Huirne R.B.M., Galligan D.T., Economic aspects of herd health and production management, in: Brand A., Noordhuizen J.P.T.M., Schukken Y.H. (Eds.), Herd health and production management in dairy cows, Wageningen Academic Publishers, Wageningen, 1996, pp. 57-73.
  26. Dirksen G.H., Liebich H.G., Mayer E., Adaptive changes of the ruminal mucosa and their functional and clinical significance, Bov. Pract. 20 (1999) 116-120.
  27. Domecq J.J., Skidmore A.L., Lloyd J.W., Kaneene J.B., Relationship between body condition scores and conception at first artificial insemination in a large dairy herd of high yielding Holstein cows, J. Dairy Sci. 80 (1997) 113-120 [PubMed].
  28. Downing J.A., Joss J., Scaramuzzi R.J., Ovulation rate and the concentrations of gonadotrophins and metabolic hormones in ewes infused with glucose during the late luteal phase of the oestrous cycle, J. Endocrinol. 146 (1995) 403-410 [PubMed].
  29. Drackley J.K., ADSA Foundation Scholar Award. Biology of dairy cows during the transition period: the final frontier?, J. Dairy Sci. 82 (1999) 2259-2273 [PubMed].
  30. Drost M., Thatcher W.W., Heat stress in dairy cows. Its effect on reproduction, Vet. Clin. North Am. Food Anim. Pract. 3 (1987) 609-618 [PubMed].
  31. Echternkamp S.E., Spicer L.J., Gregory K.E., Canning S.F., Hammond J.M., Concentrations of insulin-like growth factor-I in blood and ovarian follicular fluid of cattle selected for twins, Biol. Reprod. 43 (1990) 8-14 [CrossRef] [PubMed].
  32. Edmonson A.J., Lean I.J., Weaver L.D., Farver T., Webster G., A body condition scoring chart for Holstein dairy cows, J. Dairy Res. 72 (1989) 68-78.
  33. Ehrhardt R.A., Slepetis R.M., Siegal W.J., Van Amburgh M.E., Bell A.W., Boisclair Y.R., Development of a specific radioimmunoassay to measure physiological changes of circulating leptin in cattle and sheep, J. Endocrinol. 166 (2000) 519-528 [CrossRef] [PubMed].
  34. Eicker S.W., Grohn Y.T., Hertl J.A., The association between cumulative milk yield, days open, and days to first breeding in New York Holstein cows, J. Dairy Sci. 79 (1996) 235-241 [PubMed].
  35. El-Din Zain A., Nakao T., Abdel Raouf M., Moriyoshi M., Kawata K., Moritsu Y., Factors in the resumption of ovarian activity and uterine involution in postpartum dairy cows, Anim. Reprod. Sci. 38 (1995) 203-214 [CrossRef].
  36. Emmerson D.A., Commercial approaches to genetic selection for growth and feed conversion in domestic poultry, Poult. Sci. 76 (1997) 1121-1125 [PubMed].
  37. Fahey J., Boland M.P., O'Callaghan D., The effect of dietary urea on embryo development in superovulated donor ewes and on early embryo survival and development in recipient ewes, J. Anim. Sci. 72 (2001) 395-400.
  38. Fonseca F.A., Britt J.H., McDaniel B.T., Wilk J.C., Rakes A.H., Reproductive traits of Holsteins and Jerseys. Effects of age, milk yield, and clinical abnormalities on involution of cervix and uterus, ovulation, estrous cycles, detection of estrus, conception rate, and days open, J. Dairy Sci. 66 (1983) 1128-1147 [PubMed].
  39. Garnsworthy P.C., Jones G.P., The influence of body condition at calving and dietary protein supply on voluntary food intake and performance in dairy cows, Anim. Prod. 44 (1987) 347-353.
  40. Garnsworthy P.C., Topps J.H., The effect of body condition of dairy cows at calving on their food intake and performance when given complete diets, Anim. Prod. 35 (1982) 113-119.
  41. Gazal O.S., Leshin L.S., Stanko R.L., Thomas M.G., Keisler D.H., Anderson L.L., Williams G.L., Gonadotropin-releasing hormone secretion into third-ventricle cerebrospinal fluid of cattle: correspondence with the tonic and surge release of luteinizing hormone and its tonic inhibition by suckling and neuropeptide Y, Biol. Reprod. 59 (1998) 676-683 [CrossRef] [PubMed].
  42. Gearhart M.A., Curtis C.R., Erb H.N., Smith R.D., Sniffen C.J., Chase L.E., Cooper M.D., Relationship of changes in condition score to cow health in Holsteins, J. Dairy Sci. 73 (1990) 3132-3140 [PubMed].
  43. Godden S.M., Kelton D.F., Lissemore K.D., Walton J.S., Leslie K.E., Lumsden J.H., Milk urea testing as a tool to monitor reproductive performance in Ontario dairy herds, J. Dairy Sci. 84 (2001) 1397-1406 [PubMed].
  44. Gong J.G., Lee W.J., Garnsworthy P.C., Webb R., Effect of dietary-induced increases in circulating insulin concentrations during the early postpartum period on reproductive function in dairy cows, Reproduction 123 (2002) 419-427 [CrossRef] [PubMed].
  45. Grummer R.R., Impact of changes in organic nutrient metabolism on feeding the transition dairy cow, J. Anim. Sci. 73 (1995) 2820-2833 [PubMed].
  46. Hammon D.S., Wang S., Holyoak G.R., Effects of ammonia during different stages of culture on development of in vitro produced bovine embryos, Anim. Reprod. Sci. 59 (2000) 23-30 [CrossRef] [PubMed].
  47. Henry B.A., Goding J.W., Alexander W.S., Tilbrook A.J., Canny B.J., Dunshea F., Rao A., Mansell A., Clarke I.J., Central administration of leptin to ovariectomized ewes inhibits food intake without affecting the secretion of hormones from the pituitary gland: evidence for a dissociation of effects on appetite and neuroendocrine function, Endocrinology 140 (1999) 1175-1182 [CrossRef] [PubMed].
  48. Herdt T.H., Wensing T., Haagsman H.P., van Golde L.M., Breukink H.J., Hepatic triacylglycerol synthesis during a period of fatty liver development in sheep, J. Anim. Sci. 66 (1988) 1997-2013 [PubMed].
  49. Heuer C., Van Straalen W.M., Schukken Y.H., Dirkzwager A., Noordhuizen J.P.T.M., Prediction of energy balance in a high yielding dairy herd in early lactation: model development and precision, Livest. Prod. Sci. 65 (2000) 91-105 [CrossRef].
  50. Heuer C., Van Straalen W.M., Schukken Y.H., Dirkzwager A., Noordhuizen J.P.T.M., Prediction of energy balance in high yielding dairy cows with test-day information, J. Dairy Sci. 84 (2001) 471-481 [PubMed].
  51. Hillers J.K., Senger P.L., Darlington R.L., Fleming W.N., Effects of production, season, age of cow, days dry, and days in milk on conception to first service in large commercial dairy herds, J. Dairy Sci. 67 (1984) 861-867 [PubMed].
  52. Hossenlopp P., Seurin D., Segovia-Quinson B., Hardouin S., Binoux M., Analysis of serum insulin-like growth factor binding proteins using western blotting: use of the method for titration of the binding proteins and competitive binding studies, Anal. Biochem. 154 (1986) 138-143 [CrossRef] [PubMed].
  53. Houseknecht K.L., Baile C.A., Matteri R.L., Spurlock M.E., The biology of leptin: a review, J. Anim. Sci. 76 (1998) 1405-1420 [PubMed].
  54. Jorritsma R., Jorritsma H., Schukken Y.H., Bartlett P.C., Wensing T., Wentink G.H., Prevalence and indicators of post partum fatty infiltration of the liver in nine commercial dairy herds in The Netherlands, Livest. Prod. Sci. 68 (2001) 53-60 [CrossRef].
  55. Jorritsma R., Jorritsma H., Schukken Y.H., Wentink G.H., Relationships between fatty liver and fertility and some periparturient diseases in commercial Dutch dairy herds, Theriogenology 54 (2000) 1065-1074 [CrossRef] [PubMed].
  56. Kaneene J.B., Miller R., Epidemiological study of metritis in Michigan dairy cattle, Vet. Res. 25 (1994) 253-257 [PubMed].
  57. Klasing K.C., Johnstone B.J., Monokines in growth and development, Poult. Sci. 70 (1991) 1781-1789 [PubMed].
  58. Kruip T.A., Meijer G.A., Rukkwamsuk T., Wensing T., Investigation into the mechanisms of reduction in fertility of high yielding cows. 10th Int. Conf. on Prod. Dis. in Farm An. 1998, pp. 183-190.
  59. Kunz P.L., Blum J.W., Hart I.C., Bickel H., Landis J., Effects of different energy intakes before and after calving on food intake, performance and blood hormones and metabolites in dairy cows, Anim. Prod. 40 (1985) 219-231.
  60. Lamming G.E., Wathes D.C., Peters A.R., Endocrine patterns of the post-partum cow, J. Reprod. Fertil. Suppl. 30 (1981) 155-170 [PubMed].
  61. Leemput E.E., Final follicular maturation in the cow and its effects on the developmental potential of the oocyte, thesis, Department of Farm Animal Health, Utrecht University, 1998, pp. 67-84, ISBN 90-393-1640-6.
  62. Lucy M.C., Regulation of ovarian follicular growth by somatotropin and insulin-like growth factors in cattle, J. Dairy Sci. 83 (2000) 1635-1647 [PubMed].
  63. Lucy M.C., Beck J., Staples C.R., Head H.H., De La Sota R.L., Thatcher W.W., Follicular dynamics, plasma metabolites, hormones and insulin-like growth factor I (IGF-I) in lactating cows with positive or negative energy balance during the preovulatory period, Reprod. Nutr. Dev. 32 (1992) 331-341 [PubMed].
  64. McGuire M.A., Bauman D.E., Dwyer D.A., Cohick W.S., Nutritional modulation of the somatotropin/insulin-like growth factor system: response to feed deprivation in lactating cows, J. Nutr. 125 (1995) 493-502 [PubMed].
  65. McGuire M.A., Beede D.K., Collier R.J., Buonomo F.C., DeLorenzo M.A., Wilcox C.J., Huntington G.B., Reynolds C.K., Effects of acute thermal stress and amount of feed intake on concentrations of somatotropin, insulin-like growth factor (IGF)-I and IGF-II, and thyroid hormones in plasma of lactating Holstein cows, J. Anim. Sci. 69 (1991) 2050-2056 [PubMed].
  66. Nap R.C., Mol J.A., Hazewinkel H.A., Age-related plasma concentrations of growth hormone (GH) and insulin-like growth factor I (IGF-I) in Great Dane pups fed different dietary levels of protein, Domest. Anim. Endocrinol. 10 (1993) 237-247 [CrossRef] [PubMed].
  67. Nebel R.L., McGilliard M.L., Interactions of high milk yield and reproductive performance in dairy cows, J. Dairy Sci. 76 (1993) 3257-3268 [PubMed].
  68. Opsomer G., Grohn Y.T., Hertl J., Coryn M., Deluyker H., de Kruif A., Risk factors for post partum ovarian dysfunction in high producing dairy cows in Belgium: a field study, Theriogenology 53 (2000) 841-857 [CrossRef] [PubMed].
  69. Poretsky L., Cataldo N.A., Rosenwaks Z., Guidice L.C., The insulin-related ovarian regulatory system in health and disease, Endocr. Rev. 20 (1999) 535-582 [CrossRef] [PubMed].
  70. Poretsky L., Kalin M.F., The gonadotropic function of insulin, Endocr. Rev. 8 (1987) 132-141 [PubMed].
  71. Rabiee A.R., Lean I.J., Gooden J.M., Miller B.G., Scaramuzzi R.J., An evaluation of transovarian uptake of metabolites using arterio-venous difference methods in dairy cattle, Anim. Reprod. Sci. 48 (1997) 9-25 [CrossRef] [PubMed].
  72. Reimers T.J., Smith R.D., Newman S.K., Management factors affecting reproductive performance of dairy cows in the northeastern United States, J. Dairy Sci. 68 (1985) 963-972 [PubMed].
  73. Reist M., Koller A., Busato A., Kupfer U., Blum J.W., First ovulation and ketone body status in the early postpartum period of dairy cows, Theriogenology 54 (2000) 685-701 [CrossRef] [PubMed].
  74. Reurink A., Den Daas J.H.G., Wilmink J.B.M., Effects of AI sires and technician on non-return rates in the Netherlands, Livest. Prod. Sci. 26 (1990) 107-118 [CrossRef].
  75. Rhodes F.M., Fitzpatrick L.A., Entwistle K.W., De'ath G., Sequential changes in ovarian follicular dynamics in Bos indicus heifers before and after nutritional anoestrus, J. Reprod. Fertil. 104 (1995) 41-49 [PubMed].
  76. Rougoor C.W., Hanekamp W.J.A., Dijkhuizen A.A., Nielen M., Wilmink J.B.M., Relationships between dairy cow mastitis and fertility management and farm performance, Prev. Vet. Med. 39 (1999) 247-264 [CrossRef] [PubMed].
  77. Royal M., Darwash A.O., Flint A., Webb R., Woolliams J.A., Lamming G.E., Declining fertility in dairy cattle: changes in traditional and endocrine parameters of fertility, Anim. Sci. 70 (2000) 487-501.
  78. Rukkwamsuk T., Wensing T., Geelen M.J.H., Effect of fatty liver on hepatic gluconeogenesis in periparturient dairy cows, J. Dairy Sci. 82 (1999) 500-505 [PubMed].
  79. Rukkwamsuk T., Wensing T., Geelen M.J., Effect of overfeeding during the dry period on the rate of esterification in adipose tissue of dairy cows during the periparturient period, J. Dairy Sci. 82 (1999) 1164-1169 [PubMed].
  80. Rukkwamsuk T., Wensing T., Kruip T.A., Relationship between triacylglycerol concentration in the liver and first ovulation in postpartum dairy cows, Theriogenology 51 (1999) 1133-1142 [CrossRef] [PubMed].
  81. Rutter L.M., Manns J.G., Hypoglycemia alters pulsatile luteinizing hormone secretion in the postpartum beef cow, J. Anim. Sci. 64 (1987) 479-488 [PubMed].
  82. Schillo K.K., Hall J.B., Hileman S.M., Effects of nutrition and season on the onset of puberty in the beef heifer, J. Anim. Sci. 70 (1992) 3994-4005 [PubMed].
  83. Sinclair K.D., Kuran M., Gebbie F.E., Webb R., McEvoy T.G., Nitrogen metabolism and fertility in cattle. II. Development of oocytes recovered from heifers offered diets differing in their rate of nitrogen release in the rumen, J. Anim. Sci. 78 (2000) 2670-2680 [PubMed].
  84. Snijders S.E.M., Dillon P.G., O'Farrell K.J., Diskin M., Wylie A.R.G., O'Callaghan D., Rath M., Boland M.P., Genetic merit for milk production and reproductive success in dairy cows, Anim. Reprod. Sci. 65 (2001) 17-31 [CrossRef] [PubMed].
  85. Spector A.A., Fletcher J.E., Transport of fatty acid in the circulation, American Physiological Society, Bethesda, MD, 1978, pp. 232-233.
  86. Spicer L.J., Alonso J., Chamberlain C.S., Effects of thyroid hormones on bovine granulosa and thecal cell function in vitro: dependence on insulin and gonadotropins, J. Dairy Sci. 84 (2001) 1069-1076 [PubMed].
  87. Spicer L.J., Echternkamp S.E., The ovarian insulin and insulin-like growth factor system with an emphasis on domestic animals, Domest. Anim. Endocrinol. 12 (1995) 223-245 [CrossRef] [PubMed].
  88. Stagg K., Spicer L.J., Sreenan J.M., Roche J.F., Diskin M.G., Effect of calf isolation on follicular wave dynamics, gonadotropin and metabolic hormone changes, and interval to first ovulation in beef cows fed either of two energy levels postpartum, Biol. Reprod. 59 (1998) 777-783 [CrossRef] [PubMed].
  89. Starbuck G.R., Darwash A.O., Mann G.E., Lamming G.E. The detection and treatment of post insemination progesterone insufficiency in diary cows. Occasional publication No. 26, British Society of Animal Science 2 (1999) 447-450.
  90. Strang B.D., Bertics S.J., Grummer R.R., Armentano L.E., Effect of long-chain fatty acids on triglyceride accumulation, gluconeogenesis, and ureagenesis in bovine hepatocytes, J. Dairy Sci. 81 (1998) 728-739 [PubMed].
  91. Strang B.D., Bertics S.J., Grummer R.R., Armentano L.E., Relationship of triglyceride accumulation to insulin clearance and hormonal responsiveness in bovine hepatocytes, J. Dairy Sci. 81 (1998) 740-747 [PubMed].
  92. Suriyasathaporn W., Negative energy balance in postpartum dairy cows: its effect on clinical mastitis and reproductive performance, Ph.D. thesis, Utrecht University, Department of Farm Animal Health, 2000.
  93. Thatcher W.W., Wilcox C.J., Postpartum estrus as an indicator of reproductive status in the dairy cow, J. Dairy Sci. 56 (1973) 608-610 [PubMed].
  94. Thomas M.G., Gazal O.S., Williams G.L., Stanko R.L., Keisler D.H., Injection of neuropeptide Y into the third cerebroventricle differentially influences pituitary secretion of luteinizing hormone and growth hormone in ovariectomized cows, Domest. Anim. Endocrinol. 16 (1999) 159-169 [CrossRef] [PubMed].
  95. Van den Top A.M., Wensing T., Geelen M.J., Wentink G.H., van't Klooster A.T., Beynen A.C., Time trends of plasma lipids and enzymes synthesizing hepatic triacylglycerol during postpartum development of fatty liver in dairy cows, J. Dairy Sci. 78 (1995) 2208-2220 [PubMed].
  96. Van der Honing Y., Steg A., Van Es A.J.H., Feed evaluation for dairy cows: tests on the system proposed in the Netherlands, Livest. Prod. Sci. 4 (1977) 57-67 [CrossRef].
  97. Van Eerdenburg F.J., Loeffler H.S., van Vliet J.H., Detection of oestrus in dairy cows: a new approach to an old problem, Vet. Q. 18 (1996) 52-54 [PubMed].
  98. Van Es J.H., Feed evaluation for ruminants. I. The systems in use from May 1977 onwards in the Netherlands, Livest. Prod. Sci. 5 (1978) 331-345 [CrossRef].
  99. Veerkamp R.F., Selection for economic efficiency of dairy cattle using information on live weight and feed intake: a review, J. Dairy Sci. 81 (1998) 1109-1119 [PubMed].
  100. Veerkamp R.F., Emmans G.C., Sources of genetic variation in energetic efficiency of dairy cows, Livest. Prod. Sci. 44 (1995) 87-97 [CrossRef].
  101. Vermorel M., Feed evaluation for ruminants. II. The new energy systems proposed in France, Livest. Prod. Sci. 5 (1978) 347-365 [CrossRef].
  102. Villa-Godoy A., Hughes T.L., Emery R.S., Chapin L.T., Fogwell R.L., Association between energy balance and luteal function in lactating dairy cows, J. Dairy Sci. 71 (1988) 1063-1072 [PubMed].
  103. Webster F.B., Lean I.J., Curtis M.A., A case-control study to identify farm factors affecting fertility of dairy herds: multivariate description of factors, Aust. Vet. J. 75 (1997) 262-265 [PubMed].
  104. Yung M.C., Vandehaar M.J., Fogwell R.L., Sharma B.K., Effect of energy balance and somatotropin on insulin-like growth factor I in serum and on weight and progesterone of corpus luteum in heifers, J. Anim. Sci. 74 (1996) 2239-2244 [PubMed].
  105. Zhu L.H., Armentano L.E., Bremmer D.R., Grummer R.R., Bertics S.J., Plasma concentration of urea, ammonia, glutamine around calving, and the relation of hepatic triglyceride, to plasma ammonia removal and blood acid-base balance, J. Dairy Sci. 83 (2000) 734-740 [PubMed].
  106. Zurek E., Foxcroft G.R., Kennelly J.J., Metabolic status and interval to first ovulation in postpartum dairy cows, J. Dairy Sci. 78 (1995) 1909-1920 [PubMed].