PDF
FLIP
Fecha Publicación: 2009-12-18
Cómo citar
Leandro Gressler, M. A. ., & Lenz Souza, M. I. . (2009). Efeitos da suplementação com gordura protegida sobre a foliculogênese ovariana de ruminantes. Revista Veterinaria Y Zootecnia (On Line), 3(2), 70–79. Recuperado a partir de https://revistasojs.ucaldas.edu.co/index.php/vetzootec/article/view/5641
Más formatos de cita
Autores/as
Resumen
RESUMO: A nutrição é um fator de extrema importância na capacidade de manutenção das funções metabólicas do organismo, como no processo reprodutivo, via secreção hormonal, de fatores de crescimento e de constituintes bioquímicos. A suplementação de lipídios pode ser uma estratégia efetiva para aumentar a densidade energética da dieta de fêmeas ruminantes. Com isto, pode-se engrandecer a síntese hormonal, inclusive a esteroidogênese folicular e luteal, e de prostaglandinas, via inibição de enzimas que atuam na conversão do ácido araquidônico, além de potencializar as ações de fatores de crescimento, especialmente o IGF-1, e o fornecimento de nutrientes para todos os eventos da foliculogênese ovariana.
Palabras clave:
Citas
Afonso, V.A.C.; Costa, R.L.D.; Fontes, R.S.; et al. Intervalo de partos em ovelhas da raça Santa Inês suplementadas com ácidos graxos. Veterinaria y Zootecnia, v.15, p.129, 2008.
Armstrong, D.G.; McEvoy, T.G.; Baxter, G.; et al. Effect of dietary energy and protein on bovine follicular dynamics and embryo production in vitro: associations with the ovarian insulin-like growth factor system. Biology of Reproduction, v.64, p.1624-1632, 2001.
Behl, R.; Pandey, R.S. Effect os recombinant insulin like growth factor-1 on caprine granulosa cell steroidogenesis, in vitro. Small Ruminant Research, v.33, p.165-169, 1999.
Blache, D.; Chagas, L.M.; Blacberry, M.A.; et al. Review: Metabolic factors affecting the reproductive axis in male sheep. Journal of Reproduction and Fertility, v.120, p.1-11, 2000.
Blache, D.; Zhang, S.; Martin, G.B. Dynamic and integrative aspects of the regulate of reproduction by metabolic status in male sheep. Reproduction Nutrition and Development, v.46, p.379-390, 2006.
Campbell, B.K. The endocrine and local control of ovarian follicle development in the ewe. Animal Reproduction, v.6, n.1, p.159-171, 2009.
Castañeda-Gutiérrez, E.; Benefield, B.C.; Veth, M.J.de; et al. Evaluation of the mechanism of action of conjugated linoleic acid isomers on reproduction in dairy cows. Journal of Dairy Science, v.90, n.9, p.4253-4264, 2007.
Cerri, R.L.A.; Juchem, S.O.; Chebel, R.C.; et al. Effect of fat source differing in fatty acid profile on metabolic parameters, fertilization, and embryo quality in high-producing dairy cows. Journal of Dairy Science, v.92, p.1520-1531, 2009.
Cunningham, J.G.; Klein, B.G. Tratado de fisiologia veterinária. 4.ed. Rio de Janeiro: Elsevier, 2008. 710p.
De Fries, C.A.; Neuendorff, D.A.; Randel, R.D. Fat supplementation influences postpartum reproductive performance in Brahman cows. Journal of Animal Science, v.76, p.864-870. 1998.
Espinoza, J.L.; Palacios, A.; Ortega, R.; et al. Efecto de la suplementación de grasas sobre las concentraciones séricas de progesterona, insulina, somatotropina y algunos metabolitos de los lípidos en ovejas Pelibuey. Archivos de Medicina Veterinária, v.40, p.135-140, 2008.
Garcia-Bajalil, C.M.; Staples, C.R.; Thatcher, W.W.; et al. Protein intake and development of ovarian follicles and embryos of superovulated nonlactating dairy cows. Journal of Dairy Science, v.77, p.2537-2548, 1994.
Ghoreishi, S.M.; Zamiri, M.J.; Rowghani, E.; et al. Effect of a calcium soap of fatty acids on reproductive characteristics and lactation performance of fat-tailed sheep. Pakistan Journal of Biological Sciences, v.10, p.2389- 2395, 2007.
Gun, R.G.; Milne, J.A.; Senior, A.J.; et al. The effect of feeding supplements in the autumn on the reproductive performance of grazing ewes 1. Feeding of fixed amounts of supplements before and during mating. Animal Production, v.54, p.243-248, 1992.
Hafez, E.S.E.; Hafez, B. Reprodução animal. 7.ed. Barueri: Manole, 2004. 513p.
Hess, B. Suplementação de gordura para vacas de corte em reprodução. In: Curso novos enfoques na produção e reprodução de bovinos. 12, Palestras... Uberlândia, Conapec Jr., Uberlândia. CD-Rom, 2008.
Hightshoe, R.B., cochran, R.C.; Corah, L.R.; et al. Effects of calcium soaps of fatty acids on postpartum reproductive function in beef cows. Journal of Animal Science, v.69, p.4097-4103. 1991.
Huang, Y.; Schoonmaker, J.P.; Oren, S.L.; et al. Calcium salts of CLA improve availability of dietary CLA. Livestock Science, v.122, n.1, p.1- 7, 2009.
Jenkins, T.C.; Palmquist, D.L. Effect of fatty acids or calcium soaps on rumen and total nutrient digestibility of dairy rations. Journal of Dairy Science, v.67, p.978-986, 1984.
Jorritsma, R.; Langendijk, P.; Kruip, T.A.M.; et al. Associations between energy metabolism, LH pulsatility and first ovulation in early lactating cows. Reproduction in Domestic Animals, v.40, p.68-72, 2005.
Kawashima, C.; Fukihara, S.; Maeda, M.; et al. Relationship between metabolic hormones and ovulation of dominant follicle during the first follicular wave post-partum in high-producing dairy cows. Reproduction, v.133, p.155-163, 2007
King, G.J. Reproduction in domesticated animals. Amsterdan: Elsevier, 1993. 590p.
Kozloski, G.V. Bioquímica dos ruminantes. Santa María: UFSM, Brasil, 2002. 140p.
Krehbiel, C.R.; McCoy, R.A.; Stock, R.A.; et al. Influence of grain type, tallow level, and tallow feeding system on feedlot cattle performance. Journal of Animal Science, v.73, p.2916-2921, 1995.
Lamond, S.R.; Gaddy, R.G.; Kennedy, S.W. Influence of season and nutrition on luteal plasma progesterone in Rambouillet ewes. Journal of Animal Science, v.34, n.5, p.626-629, 1972.
Lucy, M.C.; Staples, C.R.; Michel, f.M.; et al. Effect of feeding calcium soaps to early postpartum dairy cows on plasma prostaglandin F2 alpha, luteinizing hormone, and follicular growth. Journal of Dairy Science, v.74, p.483-489, 1991.
Mann G.E.; Lamming, G.E.; Robinson, R.S.; et al. The regulation of interferon-tau production and uterine receptors during early pregnancy. Journal of Reproduction and Fertility, supplement, v.54, p.317-328, 1999.
Martin, G.B.; Rodger, J.; Blache, D. Nutritional and environmental effects on reproduction in small ruminants. Reproduction, Fertility and Development, v.16, p.491-501, 2004.
Mattos, R.; Staples, C.R.; Thatcher, W.W. Effects of dietary fatty acids on reproduction in ruminants. Reviews in Reproduction, v.5, n.1, p.38-45, 2000.
Mihm, M.; Austin, E.J. The final stages of dominant follicle selection in cattle. Domestic Animal Endocrinology, v.23, p.155-166, 2002.
Moallen, U.; Folman, Y.; Sklan, D. Effect of calcium soaps of fatty acids and administration of somatotropin on milk production, preovulatory follicular development, and plasma and follicular fluid lipid composition in high yielding cows. Journal of Dairy Science, v.82, p.2358-2368. 1999.
Monniaux, D.; Monget, P.; Besnard, N.; et al. Growth factors and antral follicular development in domestic ruminants. Theriogenology, v.47, p.3- 12, 1997.
NRC, National Research Council. Nutrients requirements of sheep. Washington: National Academies Press, 2007. 362p.
O’Callaghan, D.; Boland, M.P. Nutritional effects on ovulation, embryo development and the establishment of pregnancy in ruminants. Animal Science, v.68, p.299-314, 1999.
O’Callaghan, D.; Yaakub, H.; Hyttel, P.; et al. Effect of nutrition and superovulation on oocyte morphology, follicular fluid composition and systemic hormone concentrations in ewes. Journal of Reproduction and Fertility, v.118, n.2, p.303-326, 2000.
Oldick, B.S.; Staples, C.R.; Thatcher, W.W.; et al. Abomasal infusion of glucose and fat effect on digestion, production, and ovarian and uterine functions of cows. Journal of Dairy Science, v.80, p.1315-1328, 1997.
Palmquist, D.L.; Jenkins, T.C. Fat in lactation rations: review. Journal of Dairy Science, v.63, p.1-14, 1980.
Petit, H.V.; Dewhurst, J.G.; Scollan, N.D.; et al. Milk production and composition, ovarian function ad prostaglandin secretion of dairy cows fed omega-3 fats. Journal of Dairy Science, v.85, p.889-899, 2002.
Petit, H.V.; Twagiramungu, H. Conception rate and reproductive function of dairy cows fed different fat sources. Theriogenology, v.66, p.1316-1324, 2006.
Ponter, A.A.; Parsy, A.E.; Saadé, M.; et al. Effect of a supplement rich in linolenic acid added to the diet of post partum dairy cows on ovarian follicle growth, and milk and plasma fatty acid compositions. Reproduction, Nutrition and Development, v.46, p.19-29, 2006.
Rhind, S.M.; McNeilly, A.S. Effects of level of food intake on ovarian follicle number, size and steroidogenic capacity in the ewe. Animal Reproduction Science, v.52, n.2, p.131-138, 1998.
Richards, J.S.; Russell, D.L.; Ochsner, S.; et al. Novel signaling pattways that control ovarian follicular development, ovulation, and luteinization. Recent Progress in Hormone Research, v.57, p.195-220, 2002.
Riis, P.M. Dynamic biochemistry of animal production. Amsterdan: Elsevier Science Publishers, v.A-3, 1983. 501p.
Robinson, J.J. Nutrition and reproduction. Animal Reproduction Science, v.42, p.25-34, 1996.
Santos, J.E.P.; Bilby, T.R.; Thatcher, W.W.; et al. Long chain fatty acids of diet as factors influencing reproduction in cattle. Reproduction in Domestic Animals, v.43, p.23-30, 2008.
Santos, G.M.G.; Silva, K.C.F.; Casimiro, T.R.; et al. Reproductive performance of ewes mated in the spring when given nutritional supplements to enhance energy levels. Animal Reproduction, v.6, p.422-427, 2009.
Sartori, R.; Mollo, M.R. Influência da ingestão alimentar na fisiologia reprodutiva da fêmea bovina. Revista Brasileira de Reprodução Animal, v.31, p.197-204, 2007.
Scaramuzzi, R.J.; Campbell, B.K.; Downing, J.A.; et al. A review of the effects of supplementary nutrition in the ewe on the concentrations of reproductive and metabolic hormones and the mechanisms that regulate folliculogenesis and ovulation rate. Reproduction Nutrition and Development, v.46, p.1-16, 2006.
Sgorlon, S.; Stradaioli, G.; Gabai, G.; et al. Variation of starch and fat in the diet affects metabolic status and oxidative stress in ewes. Small Ruminant Research, v.74, p.123-129, 2008.
Shaw, D.W.; Farim, P.W.; Washburn, R. Effect of retinol palmitate rate and embryo quality in superovulated cattle. Theriogenology, v.44, p.51-58, 1995.
Sklan, D.; Nagar, L.; Arielle, A. Effect of feeding different levels of fatty acids or calcium soaps of fatty acids on digestion and metabolizable energy in sheep. Animal Science, v.50, p.93-98, 1990.
Spicer, L.J.; Echternkamp, S.E. The ovarian insulin and insulin-like growth factor system with na enphasis on domestic animals. Domestic Animal Endocrinology, v.12, n.3, p.223-45, 1995.
Spicer, L.J.; Echternkamp, S.E.; Wong, E.A.; et al. Serum hormones, follicular fluid steroids, insulinlike growth factors and their binding proteins, and ovarian IGF mRNA in sheep with different ovulation rates. Journal of Animal Science, v.73, p.1152-63, 1995.
Staples, C.R.; Burke, J.M.; Thatcher, W.W. Influence of supplemental fats on reproductive tissues and performance of lactating cows. Journal of Dairy Science, v.81, p.856-871, 1998.
Steele, W. Intestinal absorption of fatty acids and blood lipid composition in sheep. Journal of Dairy Science, v.66, p.520-527, 1983.
Sturmey, D.G.; Reis, A.; Leese, H.J.; et al. Role of fatty acids in energy provision during oocyte maturation and early embryo development. Reproduction in Domestic Animals, v.44, p.50- 58, 2009.
Szymanski, L.A.; Schneider, J.N.; Friedman, M.I.; et al. Changes in insulin, glucose and ketone bodies, but not leptin or body fat content precede restoration of luteinising hormone secretion in ewes. Journal of Neuroendocrinology, v.19, p.449-460, 2007.
Talavera, F.; Park, C.S.; Williams, G.L. Relationshipsamong dietary lipid intake, serum cholesterol and ovarian function in Holstein heifers. Journal of Animal Science, v.60, p.1045-1051, 1985.
Thatcher W.W.; Meyer, M.D.; Danet-Desnoyers, G. Maternal recognition of pregnancy. Journal of Reproduction and Fertility, supplement, v.49, p.15-28, 1995.
Thatcher W.W.; Staples, C.R.; Danet-Desnoyers, G.; et al. Embryo health and mortality in sheep and cattle. Journal of Animal Science, v.72, suppl.3, p.16, 1994.
Thomas, M.G.; Williams, G.L. Metabolic hormone secretion and FSH-induced superovulatory responses of beef heifers fed dietary fat supplements containing predominantly saturated or polyunsaturated fatty acids. Theriogenology, v.45, p.451-458, 1996.
Titi, H.H.; Awad, R. Effect of dietary fat supplementation on reproductive performance of goats. Animal Reproduction, v.4, n.1-2, p.23- 30, 2007.
Todini, L. Thyroid hormones in small ruminants: effects of endogenous environmental and nutritional factors. Animal, v.1, p.997-1008, 2007.
Viñoles, C.; Meikle, A.; Martin, G.B. Short-term nutritional treatments grazing legumes or feeding concentrates increase prolificacy in Corriedale ewes. Animal Reproduction Science, v.113, n.1- 4, p.82-92, 2009.
Wathes, D.C.; Abayasekara, D.R.E.; Aitken, R.J. Polyunsatured fatty acids in male and female reproduction. Biology of Reproduction, v.77, p.190-201, 2007.
Wehrman, M.E.; Welsh, T.H.; Williams, G.L. Dietinduced hyperlipidemia in cattle modifies the intrafollicular cholesterol environment, modulates ovarian follicular dynamics, and hastens the onset of postpartum luteal activity. Biology of Reproduction, v.45, p.514-522, 1991.
Williams, G.L. Modulation of luteal activity in postpartum beef cows through changes in dietary lipid. Journal of Animal Science, v.67, p.785- 793, 1989.
Zachut, M.; Arieli, A.; Lehrer, H.; et al. Dietary unsatured fatty acids influence preovulatory follicle characteristics in dairy cows. Reproduction, v.135, p.683-692, 2008.
Zinn, R.A.; Plascencia, A. Effects of forage level on the comparative feeding value of supplemental fat in growing-finishing diets for feedlot cattle. Journal of Animal Science, v.74, p.1194-1201, 1996.
Armstrong, D.G.; McEvoy, T.G.; Baxter, G.; et al. Effect of dietary energy and protein on bovine follicular dynamics and embryo production in vitro: associations with the ovarian insulin-like growth factor system. Biology of Reproduction, v.64, p.1624-1632, 2001.
Behl, R.; Pandey, R.S. Effect os recombinant insulin like growth factor-1 on caprine granulosa cell steroidogenesis, in vitro. Small Ruminant Research, v.33, p.165-169, 1999.
Blache, D.; Chagas, L.M.; Blacberry, M.A.; et al. Review: Metabolic factors affecting the reproductive axis in male sheep. Journal of Reproduction and Fertility, v.120, p.1-11, 2000.
Blache, D.; Zhang, S.; Martin, G.B. Dynamic and integrative aspects of the regulate of reproduction by metabolic status in male sheep. Reproduction Nutrition and Development, v.46, p.379-390, 2006.
Campbell, B.K. The endocrine and local control of ovarian follicle development in the ewe. Animal Reproduction, v.6, n.1, p.159-171, 2009.
Castañeda-Gutiérrez, E.; Benefield, B.C.; Veth, M.J.de; et al. Evaluation of the mechanism of action of conjugated linoleic acid isomers on reproduction in dairy cows. Journal of Dairy Science, v.90, n.9, p.4253-4264, 2007.
Cerri, R.L.A.; Juchem, S.O.; Chebel, R.C.; et al. Effect of fat source differing in fatty acid profile on metabolic parameters, fertilization, and embryo quality in high-producing dairy cows. Journal of Dairy Science, v.92, p.1520-1531, 2009.
Cunningham, J.G.; Klein, B.G. Tratado de fisiologia veterinária. 4.ed. Rio de Janeiro: Elsevier, 2008. 710p.
De Fries, C.A.; Neuendorff, D.A.; Randel, R.D. Fat supplementation influences postpartum reproductive performance in Brahman cows. Journal of Animal Science, v.76, p.864-870. 1998.
Espinoza, J.L.; Palacios, A.; Ortega, R.; et al. Efecto de la suplementación de grasas sobre las concentraciones séricas de progesterona, insulina, somatotropina y algunos metabolitos de los lípidos en ovejas Pelibuey. Archivos de Medicina Veterinária, v.40, p.135-140, 2008.
Garcia-Bajalil, C.M.; Staples, C.R.; Thatcher, W.W.; et al. Protein intake and development of ovarian follicles and embryos of superovulated nonlactating dairy cows. Journal of Dairy Science, v.77, p.2537-2548, 1994.
Ghoreishi, S.M.; Zamiri, M.J.; Rowghani, E.; et al. Effect of a calcium soap of fatty acids on reproductive characteristics and lactation performance of fat-tailed sheep. Pakistan Journal of Biological Sciences, v.10, p.2389- 2395, 2007.
Gun, R.G.; Milne, J.A.; Senior, A.J.; et al. The effect of feeding supplements in the autumn on the reproductive performance of grazing ewes 1. Feeding of fixed amounts of supplements before and during mating. Animal Production, v.54, p.243-248, 1992.
Hafez, E.S.E.; Hafez, B. Reprodução animal. 7.ed. Barueri: Manole, 2004. 513p.
Hess, B. Suplementação de gordura para vacas de corte em reprodução. In: Curso novos enfoques na produção e reprodução de bovinos. 12, Palestras... Uberlândia, Conapec Jr., Uberlândia. CD-Rom, 2008.
Hightshoe, R.B., cochran, R.C.; Corah, L.R.; et al. Effects of calcium soaps of fatty acids on postpartum reproductive function in beef cows. Journal of Animal Science, v.69, p.4097-4103. 1991.
Huang, Y.; Schoonmaker, J.P.; Oren, S.L.; et al. Calcium salts of CLA improve availability of dietary CLA. Livestock Science, v.122, n.1, p.1- 7, 2009.
Jenkins, T.C.; Palmquist, D.L. Effect of fatty acids or calcium soaps on rumen and total nutrient digestibility of dairy rations. Journal of Dairy Science, v.67, p.978-986, 1984.
Jorritsma, R.; Langendijk, P.; Kruip, T.A.M.; et al. Associations between energy metabolism, LH pulsatility and first ovulation in early lactating cows. Reproduction in Domestic Animals, v.40, p.68-72, 2005.
Kawashima, C.; Fukihara, S.; Maeda, M.; et al. Relationship between metabolic hormones and ovulation of dominant follicle during the first follicular wave post-partum in high-producing dairy cows. Reproduction, v.133, p.155-163, 2007
King, G.J. Reproduction in domesticated animals. Amsterdan: Elsevier, 1993. 590p.
Kozloski, G.V. Bioquímica dos ruminantes. Santa María: UFSM, Brasil, 2002. 140p.
Krehbiel, C.R.; McCoy, R.A.; Stock, R.A.; et al. Influence of grain type, tallow level, and tallow feeding system on feedlot cattle performance. Journal of Animal Science, v.73, p.2916-2921, 1995.
Lamond, S.R.; Gaddy, R.G.; Kennedy, S.W. Influence of season and nutrition on luteal plasma progesterone in Rambouillet ewes. Journal of Animal Science, v.34, n.5, p.626-629, 1972.
Lucy, M.C.; Staples, C.R.; Michel, f.M.; et al. Effect of feeding calcium soaps to early postpartum dairy cows on plasma prostaglandin F2 alpha, luteinizing hormone, and follicular growth. Journal of Dairy Science, v.74, p.483-489, 1991.
Mann G.E.; Lamming, G.E.; Robinson, R.S.; et al. The regulation of interferon-tau production and uterine receptors during early pregnancy. Journal of Reproduction and Fertility, supplement, v.54, p.317-328, 1999.
Martin, G.B.; Rodger, J.; Blache, D. Nutritional and environmental effects on reproduction in small ruminants. Reproduction, Fertility and Development, v.16, p.491-501, 2004.
Mattos, R.; Staples, C.R.; Thatcher, W.W. Effects of dietary fatty acids on reproduction in ruminants. Reviews in Reproduction, v.5, n.1, p.38-45, 2000.
Mihm, M.; Austin, E.J. The final stages of dominant follicle selection in cattle. Domestic Animal Endocrinology, v.23, p.155-166, 2002.
Moallen, U.; Folman, Y.; Sklan, D. Effect of calcium soaps of fatty acids and administration of somatotropin on milk production, preovulatory follicular development, and plasma and follicular fluid lipid composition in high yielding cows. Journal of Dairy Science, v.82, p.2358-2368. 1999.
Monniaux, D.; Monget, P.; Besnard, N.; et al. Growth factors and antral follicular development in domestic ruminants. Theriogenology, v.47, p.3- 12, 1997.
NRC, National Research Council. Nutrients requirements of sheep. Washington: National Academies Press, 2007. 362p.
O’Callaghan, D.; Boland, M.P. Nutritional effects on ovulation, embryo development and the establishment of pregnancy in ruminants. Animal Science, v.68, p.299-314, 1999.
O’Callaghan, D.; Yaakub, H.; Hyttel, P.; et al. Effect of nutrition and superovulation on oocyte morphology, follicular fluid composition and systemic hormone concentrations in ewes. Journal of Reproduction and Fertility, v.118, n.2, p.303-326, 2000.
Oldick, B.S.; Staples, C.R.; Thatcher, W.W.; et al. Abomasal infusion of glucose and fat effect on digestion, production, and ovarian and uterine functions of cows. Journal of Dairy Science, v.80, p.1315-1328, 1997.
Palmquist, D.L.; Jenkins, T.C. Fat in lactation rations: review. Journal of Dairy Science, v.63, p.1-14, 1980.
Petit, H.V.; Dewhurst, J.G.; Scollan, N.D.; et al. Milk production and composition, ovarian function ad prostaglandin secretion of dairy cows fed omega-3 fats. Journal of Dairy Science, v.85, p.889-899, 2002.
Petit, H.V.; Twagiramungu, H. Conception rate and reproductive function of dairy cows fed different fat sources. Theriogenology, v.66, p.1316-1324, 2006.
Ponter, A.A.; Parsy, A.E.; Saadé, M.; et al. Effect of a supplement rich in linolenic acid added to the diet of post partum dairy cows on ovarian follicle growth, and milk and plasma fatty acid compositions. Reproduction, Nutrition and Development, v.46, p.19-29, 2006.
Rhind, S.M.; McNeilly, A.S. Effects of level of food intake on ovarian follicle number, size and steroidogenic capacity in the ewe. Animal Reproduction Science, v.52, n.2, p.131-138, 1998.
Richards, J.S.; Russell, D.L.; Ochsner, S.; et al. Novel signaling pattways that control ovarian follicular development, ovulation, and luteinization. Recent Progress in Hormone Research, v.57, p.195-220, 2002.
Riis, P.M. Dynamic biochemistry of animal production. Amsterdan: Elsevier Science Publishers, v.A-3, 1983. 501p.
Robinson, J.J. Nutrition and reproduction. Animal Reproduction Science, v.42, p.25-34, 1996.
Santos, J.E.P.; Bilby, T.R.; Thatcher, W.W.; et al. Long chain fatty acids of diet as factors influencing reproduction in cattle. Reproduction in Domestic Animals, v.43, p.23-30, 2008.
Santos, G.M.G.; Silva, K.C.F.; Casimiro, T.R.; et al. Reproductive performance of ewes mated in the spring when given nutritional supplements to enhance energy levels. Animal Reproduction, v.6, p.422-427, 2009.
Sartori, R.; Mollo, M.R. Influência da ingestão alimentar na fisiologia reprodutiva da fêmea bovina. Revista Brasileira de Reprodução Animal, v.31, p.197-204, 2007.
Scaramuzzi, R.J.; Campbell, B.K.; Downing, J.A.; et al. A review of the effects of supplementary nutrition in the ewe on the concentrations of reproductive and metabolic hormones and the mechanisms that regulate folliculogenesis and ovulation rate. Reproduction Nutrition and Development, v.46, p.1-16, 2006.
Sgorlon, S.; Stradaioli, G.; Gabai, G.; et al. Variation of starch and fat in the diet affects metabolic status and oxidative stress in ewes. Small Ruminant Research, v.74, p.123-129, 2008.
Shaw, D.W.; Farim, P.W.; Washburn, R. Effect of retinol palmitate rate and embryo quality in superovulated cattle. Theriogenology, v.44, p.51-58, 1995.
Sklan, D.; Nagar, L.; Arielle, A. Effect of feeding different levels of fatty acids or calcium soaps of fatty acids on digestion and metabolizable energy in sheep. Animal Science, v.50, p.93-98, 1990.
Spicer, L.J.; Echternkamp, S.E. The ovarian insulin and insulin-like growth factor system with na enphasis on domestic animals. Domestic Animal Endocrinology, v.12, n.3, p.223-45, 1995.
Spicer, L.J.; Echternkamp, S.E.; Wong, E.A.; et al. Serum hormones, follicular fluid steroids, insulinlike growth factors and their binding proteins, and ovarian IGF mRNA in sheep with different ovulation rates. Journal of Animal Science, v.73, p.1152-63, 1995.
Staples, C.R.; Burke, J.M.; Thatcher, W.W. Influence of supplemental fats on reproductive tissues and performance of lactating cows. Journal of Dairy Science, v.81, p.856-871, 1998.
Steele, W. Intestinal absorption of fatty acids and blood lipid composition in sheep. Journal of Dairy Science, v.66, p.520-527, 1983.
Sturmey, D.G.; Reis, A.; Leese, H.J.; et al. Role of fatty acids in energy provision during oocyte maturation and early embryo development. Reproduction in Domestic Animals, v.44, p.50- 58, 2009.
Szymanski, L.A.; Schneider, J.N.; Friedman, M.I.; et al. Changes in insulin, glucose and ketone bodies, but not leptin or body fat content precede restoration of luteinising hormone secretion in ewes. Journal of Neuroendocrinology, v.19, p.449-460, 2007.
Talavera, F.; Park, C.S.; Williams, G.L. Relationshipsamong dietary lipid intake, serum cholesterol and ovarian function in Holstein heifers. Journal of Animal Science, v.60, p.1045-1051, 1985.
Thatcher W.W.; Meyer, M.D.; Danet-Desnoyers, G. Maternal recognition of pregnancy. Journal of Reproduction and Fertility, supplement, v.49, p.15-28, 1995.
Thatcher W.W.; Staples, C.R.; Danet-Desnoyers, G.; et al. Embryo health and mortality in sheep and cattle. Journal of Animal Science, v.72, suppl.3, p.16, 1994.
Thomas, M.G.; Williams, G.L. Metabolic hormone secretion and FSH-induced superovulatory responses of beef heifers fed dietary fat supplements containing predominantly saturated or polyunsaturated fatty acids. Theriogenology, v.45, p.451-458, 1996.
Titi, H.H.; Awad, R. Effect of dietary fat supplementation on reproductive performance of goats. Animal Reproduction, v.4, n.1-2, p.23- 30, 2007.
Todini, L. Thyroid hormones in small ruminants: effects of endogenous environmental and nutritional factors. Animal, v.1, p.997-1008, 2007.
Viñoles, C.; Meikle, A.; Martin, G.B. Short-term nutritional treatments grazing legumes or feeding concentrates increase prolificacy in Corriedale ewes. Animal Reproduction Science, v.113, n.1- 4, p.82-92, 2009.
Wathes, D.C.; Abayasekara, D.R.E.; Aitken, R.J. Polyunsatured fatty acids in male and female reproduction. Biology of Reproduction, v.77, p.190-201, 2007.
Wehrman, M.E.; Welsh, T.H.; Williams, G.L. Dietinduced hyperlipidemia in cattle modifies the intrafollicular cholesterol environment, modulates ovarian follicular dynamics, and hastens the onset of postpartum luteal activity. Biology of Reproduction, v.45, p.514-522, 1991.
Williams, G.L. Modulation of luteal activity in postpartum beef cows through changes in dietary lipid. Journal of Animal Science, v.67, p.785- 793, 1989.
Zachut, M.; Arieli, A.; Lehrer, H.; et al. Dietary unsatured fatty acids influence preovulatory follicle characteristics in dairy cows. Reproduction, v.135, p.683-692, 2008.
Zinn, R.A.; Plascencia, A. Effects of forage level on the comparative feeding value of supplemental fat in growing-finishing diets for feedlot cattle. Journal of Animal Science, v.74, p.1194-1201, 1996.
Descargas
Los datos de descargas todavía no están disponibles.
