Effects of dietary crude protein on fertility: Meta-analysis and meta-regression

Animal Feed Science and Technology

Volumn 171, Issue 1, 2012, Pages 31-42

  Lean, Ian John ^a,b   Celi, Pietro ^a   Raadsma, Herman ^a   McNamara, John ^c   Rabiee, Ahmad Reza ^a,b  

^a UNIVERSITY OF SYDNEY   (Australia)

^b Washington State University ^*  (Australia)

^c WASHINGTON STATE UNIVERSITY   (United States)

Author keywords

Dairy cows; Pregnancy and conception rate

Indexed keywords

BOS; GLYCINE MAX;

EID: 82955248004     PISSN: 03778401     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.anifeedsci.2011.09.017     Document Type: Article

References (53)

1. Barton B.A., Rosario H.A., Anderson G.W., Grindle B.P., Carroll D.J. Effects of dietary crude protein, breed, parity, and health status on the fertility of dairy cows. J. Dairy Sci. 1996, 79:2225-2236.
2. Bogin E., Avidar Y., Davidson M., Gordin S., Israeli B. Effect of nutrition on fertility and blood composition in the milk cow. J. Dairy Res. 1982, 49:13-23.
3. Bruckental I., Drori D., Kaim M., Lehrer H., Folman Y. Effects of source and level of protein on milk yield and reproductive performance of high-producing primiparous and multiparous dairy cows. Anim. Prod. 1989, 48:319-329.
4. Bruckental I., Holtzman M., Kaim M., Aharoni Y., Zamwell S., Voet H., Arieli A. Effect of amount of undegradable crude protein in the diets of high-yielding dairy cows on energy balance and reproduction. Livest. Prod. Sci. 2000, 63:131-140.
5. Bruckental I., Tagari H., Amir S., Kennit H., Zamwell S. The Effect on the performance of dairy cattle of plant protein concentration and of urea of urea-phosphate supplementation in the diet. Anim. Prod. 1986, 43:73-82.
6. Burke J.M., Staples C.R., Risco C.A., Sota R.L.d.l, Thatcher W.W. Effect of ruminant grade Menhaden fish meal on reproductive and productive performance of lactating dairy cows. J. Dairy Sci. 1997, 80:3386-3398.
7. Butler W.R. Optimizing protein nutrition for reproduction and lactation. Effect of protein nutrition on ovarian and uterine physiology in dairy cattle. J. Dairy Sci. 1998, 81:2533-2539.
8. Canfield R.W., Sniffen C.J., Butler W.R. Effects of excess degradable protein on postpartum reproduction and energy balance in dairy cattle. J. Dairy Sci. 1990, 73:2342-2349.
9. Carroll D.J., Barton B.A., Anderson G.W., Smith R.D. Influence of protein intake and feeding strategy on reproductive performance of dairy cows. J. Dairy Sci. 1988, 71:3470-3481.
10. Carroll D.J., Hossain F.R., Keller M.A. Effect of Supplemental fish meal on the lactation and reproductive performance of dairy cows. J. Dairy Sci. 1994, 77:3058-3072.
11. Chapa A.M., McCormick M.E., Fernandez J.M., French D.D., Ward J.D., Beatty J.F. Supplemental dietary protein for grazing dairy cows: reproduction, condition loss, plasma metabolites, and insulin. J. Dairy Sci. 2001, 84:908-916.
12. DerSimonian R., Laird N. Meta-analysis in clinical trials. Control. Clin. Trials 1986, 7:177-188.
13. Edwards J.S., Bartley E., Dayton A.D. Effects of dietary protein concentration on lactating cows. J. Dairy Sci. 1980, 63:243-248.
14. Egger M. Meta-analysis: principles and procedures. Br. Med. J. 1997, 315:1533-1537.
15. Egger, M., Smith. G.D., 2001. Principles of and procedures for systematic reviews. In: Egger, M., Smith, G.D., Altman, D.G. (Eds.), Systematic Reviews in Health Care Meta-analysis in Context. British Medical Journal, London, UK, pp. 23-42.
16. Elrod C.C., Butler W.R. Reduction of fertility and alteration of uterine pH in heifers fed excess ruminally degradable protein. J. Anim. Sci. 1993, 71:694-701.
17. Evans E.H., Patterson R.J. Does MUN affect reproduction?. Feedstuffs 2007, 79:16-21.
18. Ferguson J.D., Chalupa W. Impact of protein nutrition on reproduction in dairy cows. J. Dairy Sci. 1989, 72:746-766.
19. Folman Y., Neumark H., Kaim M., Kaufmann W. Performance, rumen and blood metabolites in high-yielding cows fed varying protein percents and protected soybean. J. Dairy Sci. 1981, 64:759-768.
20. Fosgate G.T. Non-differential measurement error does not always bias diagnostic likelihood ratios towards the null. Emerg. Themes Epidemiol. 2006, 3:1-7.
21. Francos G., Davidson M., Mayer E. The influence of some nutritional factors on the incidence of the repeat breeder syndrome in high producing dairy herds. Theriogenology 1977, 7:105-111.
22. Garcia-Bojalil C.M., Staples C.R., Risco C.A., Savio J.D., Thatcher W.W. Protein degradability and calcium salts of long-chain fatty acids in the diets of lactating dairy cows: reproductive responses. J. Dairy Sci. 1998, 81:1385-1395.
23. Harbord R.M., Higgins J.P.T. Meta-regression in Stata. Stata J. 2008, 8:493-519. http://www.stata-journal.com/article.html%3Farticle=sbe23_1.
24. Harbord, R.M., Steichen T.J., 2004. METAREG: Stata module to perform meta-analysis regression, Statistical Software Components S4446201, Boston College, MA Department of Economics. (revised 05.01.09). http://ideas.repec.org/c/boc/bocode/s446201.html.
25. Higgins J.P.T., Thompson S.G. Quantifying heterogeneity in a meta-analysis. Stat. Med. 2002, 21:1539-1558.
26. Higgins J.P.T., Thompson S.G., Deeks J.J., Altman D.G. Measuring inconsistency in meta-analysis. Br. Med. J. 2003, 327:557-560.
27. Higgins J.P.T., Thompson S.G. Controlling the risk of spurious findings from meta-regression. Stat. Med. 2004, 23:1663-1682.
28. Howard H.J., Aalseth E.P., Adams G.D., Bush L.J. Influence of dietary protein on reproductive performance of dairy cows. J. Anim. Sci. 1987, 70:1563-1571.
29. Institut National de la Recherche Agronomique Ruminant Nutrition. Recommended Allowances and Feed Tables 1989, INRA/John Libbey Eurotext, London, UK/Paris, France. R. Jarridge (Ed.).
30. Jordan E.R., Swanson L.V. Effect of crude protein on reproductive efficiency, serum total protein and albumin in the high-producing dairy cow. J. Dairy Sci. 1979, 62:58-63.
31. Kelsey J.L., Whittemore A.S., Evans A.S., Thompson W.D. Methods in Observational Epidemiology 1996, Oxford University Press, NY, USA.
32. Knapp G., Hartung J. Improved tests for a random-effects meta-regression with a single covariate. Stat. Med. 2003, 22:2693-2710.
33. Law R.A., Young F.J., Patterson D.C., Kilpatrick D.J., Wylie A.R.G., Mayne C.S. Effect of dietary protein content on the fertility of dairy cows during early and mid lactation. J. Dairy Sci. 2009, 92:2737-2746.
34. Lean I.J. Systems describing nutritional requirements of dairy cattle. Encyclopaedia of Dairy Sciences, vol. 2 2011, 418-428. Academic Press, San Diego, CA, USA. second ed. J.W. Fuquay, P.F. Fox, P.L.H. McSweeney (Eds.).
35. Lean I.J., Rabiee A.R., Duffield T.F., Dohoo I.R. Use of meta-analysis in animal health and reproduction: methods and applications. J. Dairy Sci. 2009, 92:3545-3565.
36. Mantel N., Haenszel W. Statistical aspects of the analysis of data from retrospective studies of disease. J. Natl. Cancer Inst. 1959, 22:719-748.
37. Mayer E., Francos G., Davidson M. Nutritional influence on fertility in Israeli dairy herds with an average 305-day production per cow of 8000kg of fat-corrected milk. Theriogenology 1978, 9:393-400.
38. McCormick M.E., French D.D., Brown T.F., Cuomo G.J., Chapa A.M., Fernandez J.M., Beatty J.F., Blouin D.C. Crude protein and rumen undegradable protein effects on reproduction and lactation performance of Holstein cows. J. Dairy Sci. 1999, 82:2697-2708.
39. NRC Nutrient Requirements of Dairy Cattle 2001, National Academy Press, Washington DC, USA. seventh ed.
40. Offer N.W. Feed into Milk. System Equations (DEFRA Link project LK0604). Feed into Milk: An Advisory Manual 2004, SAC, Auchincruive, Nottingham University Press, Nottingham, United Kingdom.
41. Peters J.L., Sutton A.J., Jones D.R., Abrams K.R., Rushton L. Contour- enhanced meta-analysis funnel plots help distinguish publication bias from other causes of asymmetry. J. Clin. Epidemiol. 2008, 61:991-996.
42. R Development Core Team, 2011. R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. ISBN 3-900051-07-0, URL http://www.r-project.org/.
43. Rabiee A.R., Lean I.J., Stevenson M.A., Socha M.T. Effects of feeding organic trace minerals on milk production and reproductive performance in lactating dairy cows: a meta-analysis. J. Dairy Sci. 2010, 93:4239-4251.
44. Rothman K.J. Modern Epidemiology 1986, Little, Brown and Company, Boston, MA, USA.
45. Sklan D., Tinsky M. Production and reproduction responses by dairy cows fed varying undergradable protein coated with rumen bypass fat. J. Dairy Sci. 1993, 76:7.
46. Son J., Grant R.J., Larson L.L. Effects of tallow and escape protein on lactational and reproductive performance of dairy cows. J. Dairy Sci. 1996, 79:822-830.
47. Staples C.R., Burke J.M., Thatcher W.W. Influence of supplemental fats on reproductive tissues and performance of lactating cows. J. Dairy Sci. 1998, 81:856-871.
48. StataCorp, 2011. Stata Statistical Software: Release 12. StataCorp LP, College Station, TX.
49. Tedeschi L.O., Chalpua W., Janczewski E., Fox D.G., Sniffen C., Munson R., Kononff P.J., Boston R. Evaluation and application of the CPMDairy nutrition model. J. Agric. Sci. 2008, 146:171-182.
50. Thatcher W.W., Bilby T.R., Bartolome J.A., Silvestre F., Staples C.R., Santos J.E.P. Strategies for improving fertility in the modern dairy cow. Theriogenology 2006, 65:30-44.
51. Thompson S.G., Sharp S.J. Explaining heterogeneity in meta-analysis: a comparison of the methods. Stat. Med. 1999, 18:2693-2708.
52. Westwood C.T., Lean I.J., Garvin J.K., Wynn P.C. Effects of genetic merit and varying dietary protein degradability on lactating dairy cows. J. Dairy Sci. 2000, 83:2926-2940.
53. Westwood C.T., Lean I.J., Kellaway R.C. Indications and implications for testing of milk urea in dairy cattle: a quantitative review. Part 1. Dietary protein sources and metabolism. New Zeal. Vet. J. 1998, 46:87-96.