Long Chain Fatty Acids of Diet as Factors Influencing Reproduction in Cattle

Reproduction in Domestic Animals - Tập 43 Số s2 - Trang 23-30 - 2008
J.E.P. Santos1, T.R. Bilby2, W.W. Thatcher3, CR Staples3, F.T. Silvestre3
1Department of Animal Sciences, University of Florida, Gainesville, FL, 32611, USA.
2Department of Animal Sciences, University of Arizona, Tucson AZ USA
3Department of Animal Sciences, University of Florida, Gainesville, FL.

Tóm tắt

ContentsCattle are fed moderate amounts of long chain fatty acids (FA) with the objective to enhance lactation and growth; however, recent interest on lipid feeding to cows has focused on reproduction, immunity and health. Increasing the caloric density of the ration by fat feeding has generally improved measures of cow reproduction, but when milk yield and body weight losses were increased by fat supplementation, positive effects on reproduction were not always observed. Feeding fat has influenced reproduction by altering the size of the dominant follicle, hastening the interval to first postpartum ovulation in beef cows, increasing progesterone concentrations during the luteal phase of the oestrous cycle, modulating uterine prostaglandin (PG) synthesis, and improving oocyte and embryo quality and developmental competence. Some of these effects were altered by the type of FA fed. The polyunsaturated FA of the n‐6 and n‐3 families seem to have the most remarkable effects on reproductive responses of cattle, but it is not completely clear whether these effects are mediated only by them or by other potential intermediates produced during rumen biohydrogenation. Generally, feeding fat sources rich in n‐6 FA during late gestation and early lactation enhanced follicle growth, uterine PG secretion, embryo quality and pregnancy in cows. Similarly, feeding n‐3 FA during lactation suppressed uterine PG release, and improved embryo quality and maintenance of pregnancy. Future research ought to focus on methods to improve the delivery of specific FA and adequately powered studies should be designed to critically evaluate their effects on establishment and maintenance of pregnancy in cattle.

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Tài liệu tham khảo

10.3168/jds.S0022-0302(06)72581-4

10.3168/jds.S0022-0302(05)72716-8

10.1095/biolreprod56.1.133

10.3168/jds.S0022-0302(06)72432-8

10.3168/jds.S0022-0302(06)72374-8

10.3168/jds.S0022-0302(97)76314-8

10.2527/2003.81112840x

Burr GO, 1929, A new disease produced by the rigid exclusion of fat from the diet, J Biol Chem, 82, 345, 10.1016/S0021-9258(20)78281-5

Burr GO, 1930, The nature and role of the fatty acids essential in nutrition, J Biol Chem, 86, 587, 10.1016/S0021-9258(20)78929-5

10.3168/jds.S0022-0302(90)78973-4

Cerri RLA, 2004, Effect of fat sources differing in fatty acid profile on fertilization rate and embryo quality in lactating dairy cows, J Dairy Sci, 87, 297

Cullens FM, 2004, Effect of timing of initiation of fat supplementation on milk production, plasma hormones and metabolites, and conception rates of Holstein cows in summer, J Dairy Sci, 86

De Fries CA, 1998, Fat supplementation influences postpartum reproductive performance in Brahman cows, J Anim Sci, 76, 864, 10.2527/1998.763864x

10.3168/jds.S0022-0302(99)75474-3

10.3168/jds.S0022-0302(90)78974-6

10.1095/biolreprod.106.058578

10.1016/j.livsci.2007.03.005

10.3168/jds.S0022-0302(98)75701-7

10.2527/1991.6993838x

Hawkins DE, 1995, An increase in serum lipids increases luteal lipid content and alters the disappearance rate of progesterone in cows, J Anim Sci, 73, 541, 10.2527/1995.732541x

Hightshoe RB, 1991, Effects of calcium soaps of fatty acids on postpartum reproductive function in beef cows, J Anim Sci, 69, 4097, 10.2527/1991.69104097x

10.1016/0090-6980(90)90056-2

Juchem SO, 2007, Lipid Digestion and Metabolism in Dairy Cows: Effects on Production, Reproduction and Health

10.1530/rep.0.1220131

10.1016/0090-6980(86)90179-6

Lammoglia MA, 1996, Effects of dietary fat and season on steroid hormonal profiles before parturition and on hormonal, cholesterol, triglycerides, follicular pattern, and postpartum reproduction in Brahman cows, J Anim Sci, 74, 2253, 10.2527/1996.7492253x

Lammoglia MA, 1997, Effects of dietary fat on follicular development and circulating concentrations of lipids, insulin, progesterone, estradiol‐17β, 13,14‐dihydro‐15‐keto‐prostaglandin F2α and growth hormone in estrous cyclic Brahman cows, J Anim Sci, 75, 1591, 10.2527/1997.7561591x

10.1101/gad.13.12.1561

10.3168/jds.S0022-0302(91)78195-2

10.3168/jds.S0022-0302(93)77429-9

10.1016/j.domaniend.2005.07.003

10.1530/ror.0.0050038

10.3168/jds.S0022-0302(02)74133-7

10.1095/biolreprod.102.015057

10.3168/jds.S0022-0302(04)73236-1

10.1530/reprod/118.1.163

10.1016/S0378-4320(03)00111-8

10.3168/jds.S0022-0302(07)72616-4

10.3168/jds.S0022-0302(97)76060-0

10.1016/j.theriogenology.2006.04.029

10.3168/jds.S0022-0302(04)73528-6

10.1530/rep.0.1240119

10.2527/1992.70113505x

10.3168/jds.S0022-0302(91)78440-3

10.3168/jds.S0022-0302(88)79787-8

10.3168/jds.S0022-0302(95)76872-2

10.3168/jds.S0022-0302(91)78198-8

10.3168/jds.S0022-0302(94)77107-1

10.3168/jds.S0022-0302(96)76430-5

10.3168/jds.S0022-0302(93)77602-X

Staples CR, 2005, Recent Advances in Animal Nutrition, 229

10.3168/jds.S0022-0302(98)75644-9

Staples CR, 2000, Effect of long chain fatty acids on lactation performance and reproductive tissues of Holstein cows, J Dairy Sci, 83

10.1016/j.theriogenology.2007.07.002

10.1016/0093-691X(95)00381-H

10.2527/jas1989.673785x

10.1530/rep.0.1210447

10.1002/mrd.1156

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Reproduction in Domestic Animals

Tập 43 Số s2

23-30

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