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J L Escalera-Pérez et al. Immunohistochemical and nucleic acid 111. McArdle CA, Holtrof AP. Oxytocin and analysis of somatotropin receptor progesterone release from bovine corpus populations in the bovine ovary. Biol luteal cells in culture: effects of insulinlike growth factor I, insulin and Reprod 1993; 48: 1219-1227. 104. Yuan W, Lucy MC. Messenger prostaglandin. Endocrinology 1989; 124: ribonucleic acid expression for growth 1278- 1286. hormone receptor, luteinicing hormone 112. Einspainer R, Miyamoto A, Schams D, receptor, and steroidogenic enzymes Muller M, Brem G. Tissue concentration, during the estrous cycle and pregnancy in mRNA expression and stimulation of porcine and bovine corpora lutea. IGF-I in luteal tissue during the oestrous Domest Anim Endocrinol 1996; 13: 431- cycle and pregnancy of cows. J Reprod 444. Fertil 1990; 90: 439-445. 105. Kirby CJ, Thatcher WW, Collier RJ, 113. Liebermann J, Schams D, Miyamoto A. Simmen FA, Lucy MC. Effects of growth Effects of local growth factors on the hormone and pregnancy on expression of secretory function of bovine corpus growth hormone receptor, insulin-like luteum during the oestrous cycle and growth factor-I, and insulin-like growth pregnancy in vitro. Reprod Fertil factor bending protein-2 and -3 genes in Develop 1996; 8: 1003-1011. bovine uterus, ovary and oviduct. Biol Reprod 1996; 55: 996-1002. 114. Sauerwein H, Miyamoto A, Gunther J, 106. Kollie S, Sinowatz F, Boie G, Lincoln D. Meyer HH, Schams D. Binding and Developmental changes in the expression action of insulin-like growth factors and of the growth hormone receptor insulin in bovine luteal tissue during the messenger ribonucleic acid and protein in oestrous cycle. J Reprod Fertil 1992; 96: the bovine ovary. Biol Reprod 1998; 59: 103-115. 836-842. 115. Snijders SE, Dillon P. O`Callaghan D, 107. Schams D, Berisha B, Kosmann M, Einspanier R, Amselgruber WM. Possible role of growth hormone, IGFs, and IGF-binding proteins in the regulation of ovarian function in large domestic animals. Domest Anim Endocrinol 1999; 17: 279-285. 108. Neuvians TP, Pfaffl MW, Berisha B, Schams D. The mRNA expression of the members of the IGF-system in bovine corpus luteum during luteolysis. Domest Anim Endocrinol 2003; 25: 359-372. 109. Vanderhaar MJ, Sharma BK, Fogwell RL. Effect of dietary energy restriction on the expression of insulin-like growth factor-I in liver and corpus luteum in heifers. J Dairy Sci 1995; 78: 832-841. 110. Lucy MC, Curran TL, Collier RJ, Cole WJ. Extended function of the corpus luteum and early development of the second follicular wave in heifers treated with bovine somatotropin. Theriogenology 1994; 41: 561-572. Boland MO. Effect of genetic merit, milk yield, body condition and lactation number on in vitro oocyte development in dairy cows. Theriogenology 2000; 53: 981-989. 116. Wiltbank MC, Sartori R, Sangsritavong S, Lopez H, Haughian JM, Ficke PM, Gumen A. Novel effects of nutrition on reproduction in lactating cows. J Anim Sci 2001; 79 (Suppl 1): 32. 117. Pushpakumara PG, Garden NH, Reynolds CK, Beever DE, Wathes DC. Relationships between transition period diet, metabolic parameters and fertility in dairy cow. Theriogenology 2003; 60: 1165-1185. 118. Moreira F, Badinga L, Burnley C, Thatcher WW. Bovine somatotropin increases embryonic development in superovulated cows and improves posttransfer rates when given to lactating recipient cows. Theriogenology 2002; 57: 1371-1387. 190
Balance energético y comportamiento reproductivo ABSTRACT Escalera L, Flores-Sandoval F, Escobar Medina FJ. Effect of negative energy balance on reproductive competence in dairy cow. Dairy cattle decreases dry matter intake around the parturition, this hypophagia driving energy balance to a substantially negative state. The negative energy balance affects the reproductive competence: increases the intervals between parturition-ovulation and parturition-conception, moreover could reduce the expression of estrous behavior. This review focuses in the relation between the negative energy balance and the postpartum ovarian activity, the estrus expression and the pregnancy maintenance in dairy cattle. Veterinaria Zacatecas 2005; 2: 179-191 Key words: negative energy balance, dairy cow, reproduction. 191
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