Abecia, J.A., Forcada, F., and Lozano, J.M.
1999. A preliminary report on the effect of dietary energy on prostaglandin F2a production in vitro, interferon-tau synthesis by the conceptus, endometrial progesterone concentration on days 9 and 15 of pregnancy and associated rates of embryo wastage in ewes. Theriogenology, In press.
Abecia, J.A., Lozano, J.M., Forcada, F., and Zarazaga, L.
1997. Effect of level of dietary energyand protein on embryo survival and progesterone production on day eight of pregnancy in Rasa Aragonesa ewes. Animal Reproduction Science
Abecia, J.A., Rhind, S.M., Goddard, P.J., McMiilen, S.M., Ahmadi, S., and Elston, D,A.
1996. Jugular and ovarian venous profiles of progesterone and associated endometrial progesterone concentrations in pregnant and non-pregnant ewes. Animal Science
Adams, R.S., Stout, W.L., Kradel, D.C., Guss, S.B. Jr., Moser, B.L., and Jung, G.A.
1978. Use and limitations of profiles in assessing health or nutritional status of dairy herds. Journal of Dairy Science
Ashworth, C.J., Sales, D.I. and Wilmut, I.
1989. Evidence of an association between the survival of embryos and the periovulatory plasma progesterone concentration in the ewe. Journal of Reproduction and Fertility
Assey, R.J., Hyttel, P., Roche, J.F. and Boland, M.P.
1994. Oocyte structure and follicular steroid concentrations in superovulated versus unstimulated heifers. Molecular Reproduction Development
Blanchard, T., Ferguson, J., Love, L., Takeda, T., Henderson, B., Hasler, J. and Chalupa, W.
Effect of dietary crude-protein type on fertilization and embryo quality in dairy cattle. Americal Journal of Veterinary Research
Butler, W.R. and Smith, R.D.
1989. Interelationships between energy balance and postpartum reproductive function in dairy cows. Journal of Dairy Science
Butler, W.R., Calaman, J.J. and Beam, S.W.
1996. Plasma and milk urea nitrogen in relation to pregnancy rate in lactating dairy cattle. Journal of Animal Science
Creed, J., McEvoy, T.G., Robinson, J.J., Aitken, R.P., Palmer, R.M., and Robertson, I.
1994. The effect of preovulatory nutrition on the subsequent development of superovulated sheep ova in an in vitro culture system. Animal Production.
58: 82. Abst.
De Sousa, P.A., Betts, D.H., O'Callaghan, D., Boland, M.P., Overstrom, E.W. and Watson, A.J.
Localization of Na/K-ATPase α-subunits and comparison of α-subunit transcript levels in single cultured and in-vivo bovine blastocysts. Theriogenology, 47: 1, 316. Abst
Dunne, L.D., Diskin, M.G., Boland, M.P., O'Farrell, K.J. and Sreenan, J.M.
1999. The effect of pre- and post-insemination plane of nutrition on embryo survival in beef heifers. Animal Science In press
Dunne, L.D., Diskin, M.G., Boland, M.P., O'Farrell, K.J. and Sreenan, J.M.
1997. Nutrition and early embryo survival in cattle. Irish Journal of Agricultural and Food Research
36: 95. Abst.
Einer-Jensen, N. and McCracken, J.A.
1981. The transfer of progesterone in the ovarian vascular pedicle of the sheep. Endocrinology, 109: 685–690.
Elrod, C.C. and Butler, W.R.
1993. Reduction of fertility and alteration of uterine pH in heifers fed excess ruminally degradable protein. Journal of Animal Science
Fahey, J. and O'Callaghan, D.
1999. Relationships between blood metabolites, body condition, milk production and fertility in dairy cows. Proceedings of the Agricultural Research Forum 25th Annual Meeting. 25-26 March 1999. Abst 9-10.
Fahey, J., Boland, M.P. and O'Callaghan, D.
1998. Effects of dietary urea on embryo development in superovulated donor ewes and on embryo survival following transfer in recipient ewes. Proceedings of the Aannual meeting of the British Society for Animal Science. Scarborough March 1998. Abst. 182.
Furnus, C.C., de Matos, D.G., Martinez, A.G. and Matkovic, M.
1996. Glucose and embryo quality. Proceedings of Techniques for gamete manipulation and storage, June 22-23, 1996. Hamilton, New Zealand. 20. Abst.
Gath, V., Lonergan, P., Boland, M.P. and O'Callaghan, D.
1999a. Effects of diet type on establishment of pregnancy and embryo development in beef heifers. Theriogenology.
51: 224. Abst.
Gath, V., Lonergan, P., Boland, M.P., and O'Callaghan, D.
1999b. Effects of diet type on establishment of pregnancy and embryo development in beef heifers. Proceedings of the Agricultural Research Forum 25 Annual Meeting. 25-26 March 1999. 97–98. Abst.
Gath, V.P., Fahey, J., Snijders, S.E.M., and O'Callaghan, D.
1999c. Effect of plasma urea concentration at the time of insemination or embryo transfer on subsequent pregnancy in cattle. Proceedings of Fertility in the High-Producing Dairy Cow. Animal Science. In Press.
Hernias, S. A., Young, C. W. and Rust, J. W.
1987. Genetic relationships and additive genetic variation of productive and reproductive traits in Guernsey dairy cattle. Journal of Dairy Science
Ingraham, R.H. and Kappel, L.C.
1988. Metabolic Profile Testing. Veterinary Clinics ofNorth America: Food Animal Practice.
4: 2, 391–412.
Jordan, E.R. and Swanson, L.V.
1979a Serum progesterone and luteinizing hormone in dairy cattle fed varying levels of crude protein. Journal of Animal Science
Jordan, E.R. and Swanson, L.V.
1979b Effect of crude protein on reproductive efficiency, serum total protein, and albumin in the high-producing dairy cow. Journal of Dairy Science
Kleemann, D.O., Walker, S.K., and Seamark, R.F.
1994. Enhanced fetal growth in sheep administered progesterone during the first three days of pregnancy. Journal ofReproduction and Fertility
Kruip, T.A.M., Meijer, G.A.L., Rukkwamsuk, T. and Wensing, T.
1998. Effects of feed in the dry period on fertility of dairy cows post partum. Reproduction in Domestic Animals
Larson, S.F., Butler, W.R. and Currie, W.B.
1997. Reduced fertility associated with low progesterone postbreeding and increased milk urea nitrogen in lactating cows. Journal of Dairy Science
Larson, L.L., Mabruck, H.S. and Lowry, S.R.
1980: Relationship between early postpartum blood composition and reproductive performance in dairy cattle. Journal of Dairy Science
Lozano, J.M., Abecia, J.A., Forcada, F., Zarazaga, L., and Alfaro, B.
1998. Effect of undernutrition on the distribution of progesterone in the uterus of ewes during the luteal phase of the estrous cycle. Theriogenology, 49: 539–546.
Macmillan, K.L., Lean, I.J. and Westwood, C.T.
1996. The effects of lactation on the fertility of dairy cows. Australian Veterinary Journal
Mann, G.E., Lamming, G.E. and Fisher, P.A.
1998. Progesterone control of embryonic interferon tau production during early pregnancy in the cow. Journal of Reproduction and Fertility Abstract Series
Mann, G.E., Mann, S.J., and Lamming, G.E.
1996. The inter-relationship between maternal hormone environment and the embryo during early stages of pregnancy in the cow. Journal of Reproduction and Fertility Abstract Series
Mantovani, R., Enright, W.J., Keane, M.G., Roche, J.F. and Boland, M.P.
1993. Effect of nutrition and dose of follicle stimulating hormone (FSH) on superovulatory response in beef heifers. Proceedings 9th meeting Association Europeenne de Transfert Embryonnaire.
Lyon, September 1993. Abst. 234.
McCann, J.P. and Hansel, W.
1986. Relationships between insulin and glucose metabolism and pituitary-ovarian functions in fasted heifers. Biology of Reproduction
McEvoy, T.G., Sinclair, K.D., Staines, M.E., Robinson, J.J., Armstrong, D.G., Webb, R.
1997a. In-vitro blastocyst production in relation to energy and protein intake prior to oocyte collection. Journal of Reproduction and Fertility Abstract Series
McEvoy, T.G., Robinson, J.J., Aitken, R.P., Findlay, P.A. and Robertson, I.S.
1997b. Dietary excesses of urea influence the viability and metabolism of preimplantation sheep embryos and may affect fetal growth among survivors. Animal Reproduction Science
McEvoy, T.G., Robinson, J.J., Aitken, R.P., Findlay, P.A., Palmer, R.M. and Robertson, I.S.
Dietary- induced suppression of pre-ovulatory progesterone concentrations in superovulated ewes impairs the subsequent in vivo and in vitro development of their ova. Animal Reproduction Science
Nebel, R.L., and McGilliard, M.L.
1993. Interactions of high milk yield and reproductive performance in dairy cows. Journal of Dairy Science
Nolan, R., Duffy, P., Wade, M., O'Callaghan, D. and Boland, M.P.
1998b. Effect of quantity and type of diet and frequency of trans-vaginal ovum aspiration on in-vitro embryo development in heifers. Theriogenology, 49: 1.402. Abst
Nolan, R., O'Callaghan, D., Duby, R.T., Lonergan, P. and Boland, M.P.
1998a. The influence of short-term nutrient changes on follicle growth and embryo production following superovulation in beef heifers. Theriogenology.
O'Callaghan, D., Wade, M.G. and Boland, M.P.
1997. Effect of urea and an ammonia-binding agent in-vivo on the subsequent development of bovine oocytes cultured in-vitro. Irish Journal of Agricultural and Food Research
36: 123–124. Abst.
Parr, R.A., Davis, I.F., Fairclough, R.J., and Miles, M.A.
1987. Overfeeding during early pregnancy reduces peripheral progesterone concentration and pregnancy rate in sheep. Journal of Reproduction and Fertility
Parr, R.A., Davis, I.F., Miles, M.A., and Squires, T.J.
1993. Liver blood flow and metabolic clearance rate of progesterone in sheep. Research in Veterinary Science
Pryce, J. E., Nielsen, B. L., Veerkamp, R. F. and Simm, G.
1999. Genotype and feeding system effects and interactions for health and fertility traits in dairy cattle. Livestock Production Science
Rubio, J.M., Hallford, D.M. and Hawkins, D.E.
1997. Effect of glucose administration during the estrous cycle on serum hormone profiles, mRNA for steroidogenic enzymes, and breeding performance of ewes. Journal of Animal Science
Snijders, S.E.M., Dillon, P., Sreenan, J., Diskin, M., O'Callaghan, D., Boland, M.P. and O'Farrell, K.
1997. Effect of genotype on follicular dynamics and subsequent reproductive performance. Irish Journal of Agricultural and Food Research
36: 96. Abst.
Snijders, S.E.M., O'Farrell, K., Boland, M.P., Dillon, P., Diskin, M., O'Callaghan, D. and Mee, J.F.
1998. Effect of genetic merit on postpartum follicular development, milk production, body weight and insulin and glucose levels in dairy cows. Proceedings of the Annual meeting of the British Society for Animal Science. Abst. 188.
Snijders, S.E.M., Dillon, P.G., O'Farrell, K.J., Diskin, M., O'Callaghan, D., Rath, M. and Boland, M.P.
1999 Relationship between genetic merit, milk production, body condition, blood parameters and reproductive performance of dairy cows In: Fertility in the High-Producing Dairy Cow. Animal Science. In Press.
Snijders, S.E.M., Dillon, P.G., O'Callaghan, D., and Boland, M.P.
2000. Effect of genetic merit, milk yield, body condition and lactation number on in-vitro oocyte development in dairy cows. Theriogenology
Spitzer, J.C., Niswender, G.D., Seidel, G.E. Jr. and Wiltbank, J.N.
1978. Fertilization and blood levels of progesterone and LH in beef heifers on a restricted energy diet. Journal of Animal Science
Sreenan, J. and Diskin, M.
1992. Breeding the dairy herd pp 37–46. Teagasc. Ireland.
Van Arendonk, J.A.M., Nieuwhof, G.J., Vos, H. and Korver, S.
1991. Genetic aspects of feed intake and efficiency in lactating dairy heifers. Livestock Production Science
Villa-Godoy, A., Hughes, T.L., Emery, R.S., Enright, W.J., Ealy, A.D., Zinn, S.A. and Fogwell, R.L.
1990. Energy balance and body condition influence luteal function in Holstein heifers. Domestic Animal Endocrinology
Wrenzycki, C., De Sousa, P., Overstrom, E.W., Duby, R.T., Herrmann, D., Watson, A.J., Niemann, H., O'Callaghan, D. and Boland, M.P.
1999. Variations of relative mRNA abundances and pyruvate metabolism in bovine embryos are associated with superovulated heifer diet type and quantity. Journal of Reproduction and Fertility In press.
Yaakub, H., O'Callaghan, D., Duffy, P., Duby, R.T. and Boland, M.P.
1996. Effect of concentrate type and quantity on superovulation in cattle. Proceedings ofTechniquesfor gamete manipulation and storage, June 22-23, 1996. Hamilton, New Zealand. 37.Abst.
Yaakub, H., O'Callaghan, D., O'Doherty, J.V. and Hyttel, P.
1997a. Effect of dietary intake on follicle numbers and oocyte morphology in unsuperovulated and superovulated ewes. Theriogenology, 47: 1, 182.Abst.
Yaakub, H., Williams, S.A., O'Callaghan, D. and Boland, M.P.
1997b. Effect of dietary intake and glucose infusion on ovulation rate and embryo quality in superovulated ewes. Journal of Reproduction and Fertility Abstract Series
19. 151. Abst
Yaakub, H., O'Callaghan, D. and Boland, M.P.
1999. Effect of roughage type and concentrate supplementation on follicle numbers and in-vitro fertilisation and development of oocytes recovered from beef heifers. Animal Reproduction Science