| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
1 Department of Animal Science, Cornell University, Ithaca, NY 14853-4801
2 Holstein Association, USA, Brattleboro, VT 05302
Responses of registered Holstein cows to various levels of inbreeding were examined with pedigree data supplied by the Holstein Association USA and test-day production data from 1970 through 1998 obtained from the Animal Breeding Center at Cornell University. Rate of increase in level of inbreeding has been accelerating over time, making it more difficult for producers to make matings that avoid the potentially deleterious effects of inbreeding. Milk production losses per lactation caused by inbreeding were generally 35 kg per percentage inbreeding level >0.01 but increased to 55 kg per percentage inbreeding level from 0.07 to 0.10. Somatic cell score was not affected by level of inbreeding. Inbreeding had the greatest effect on production at ages <22 mo and early in lactation. Early onset of the deleterious effects of inbreeding resulted in larger net present value losses than when effects of inbreeding occurred later. Losses were likely enhanced due to the need to freshen animals as early as possible to maximize net present value returns. Survival decreased as level of inbreeding increased and was likely to have a greater negative impact on the financial health of the dairy enterprise than production losses.
Key Words: inbreeding • milk • milk components • survival
Submitted on September 20, 1999
Accepted on March 2, 2000
This article has been cited by other articles:
|
|
 |
|
  G. Freyer, N. Vukasinovic, and B. Cassell Impacts of using inbred animals in studies for detection of quantitative trait loci J Dairy Sci, February 1, 2009; 92(2): 765 - 772. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
O. Gonzalez-Recio, E. Lopez de Maturana, and J. P. Gutierrez Inbreeding Depression on Female Fertility and Calving Ease in Spanish Dairy Cattle J Dairy Sci, December 1, 2007; 90(12): 5744 - 5752. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. M. Parland, J. F. Kearney, M. Rath, and D. P. Berry Inbreeding Effects on Milk Production, Calving Performance, Fertility, and Conformation in Irish Holstein-Friesians J Dairy Sci, September 1, 2007; 90(9): 4411 - 4419. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
C. Croquet, P. Mayeres, A. Gillon, H. Hammami, H. Soyeurt, S. Vanderick, and N. Gengler Linear and Curvilinear Effects of Inbreeding on Production Traits for Walloon Holstein Cows J Dairy Sci, January 1, 2007; 90(1): 465 - 471. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. Gulisija, D. Gianola, and K. A. Weigel Nonparametric Analysis of the Impact of Inbreeding on Production in Jersey Cows J Dairy Sci, January 1, 2007; 90(1): 493 - 500. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. T. Kuhn, J. L. Hutchison, and G. R. Wiggans Characterization of Holstein Heifer Fertility in the United States J Dairy Sci, December 1, 2006; 89(12): 4907 - 4920. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
B. J. Heins, L. B. Hansen, and A. J. Seykora Fertility and Survival of Pure Holsteins Versus Crossbreds of Holstein with Normande, Montbeliarde, and Scandinavian Red J Dairy Sci, December 1, 2006; 89(12): 4944 - 4951. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. C. Sorensen, P. Madsen, M. K. Sorensen, and P. Berg Udder health shows inbreeding depression in danish holsteins. J Dairy Sci, October 1, 2006; 89(10): 4077 - 4082. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. Sewalem, G. J. Kistemaker, F. Miglior, and B. J. Van Doormaal Analysis of inbreeding and its relationship with functional longevity in Canadian dairy cattle. J Dairy Sci, June 1, 2006; 89(6): 2210 - 2216. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
C. Croquet, P. Mayeres, A. Gillon, S. Vanderick, and N. Gengler Inbreeding depression for global and partial economic indexes, production, type, and functional traits. J Dairy Sci, June 1, 2006; 89(6): 2257 - 2267. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
V. Adamec, B. G. Cassell, E. P. Smith, and R. E. Pearson Effects of Inbreeding in the Dam on Dystocia and Stillbirths in US Holsteins J Dairy Sci, January 1, 2006; 89(1): 307 - 314. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 S Brotherstone and M Goddard Artificial selection and maintenance of genetic variance in the global dairy cow population Phil Trans R Soc B, July 29, 2005; 360(1459): 1479 - 1488. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
E. Wall, S. Brotherstone, J. F. Kearney, J. A. Woolliams, and M. P. Coffey Impact of Nonadditive Genetic Effects in the Estimation of Breeding Values for Fertility and Correlated Traits J Dairy Sci, January 1, 2005; 88(1): 376 - 385. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. F. Kearney, E. Wall, B. Villanueva, and M. P. Coffey Inbreeding Trends and Application of Optimized Selection in the UK Holstein Population J Dairy Sci, October 1, 2004; 87(10): 3503 - 3509. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
B. G. Cassell, V. Adamec, and R. E. Pearson Effect of Incomplete Pedigrees on Estimates of Inbreeding and Inbreeding Depression for Days to First Service and Summit Milk Yield in Holsteins and Jerseys J Dairy Sci, September 1, 2003; 86(9): 2967 - 2976. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
B. G. Cassell, V. Adamec, and R. E. Pearson Maternal and Fetal Inbreeding Depression for 70-Day Nonreturn and Calving Rate in Holsteins and Jerseys J Dairy Sci, September 1, 2003; 86(9): 2977 - 2983. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. Z. Caraviello, K. A. Weigel, and D. Gianola Analysis of the Relationship Between Type Traits, Inbreeding, and Functional Survival in Jersey Cattle Using a Weibull Proportional Hazards Model J Dairy Sci, September 1, 2003; 86(9): 2984 - 2989. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
