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163 results on '"Bishop, M. D."'

3. A medium-density genetic linkage map of the bovine genome

Author

Barendse, W., Vaiman, D., Kemp, S. J., Sugimoto, Y., Armitage, S. M., Williams, J. L., Sun, H. S., Eggen, A., Agaba, M., Aleyasin, S. A., Band, M., Bishop, M. D., Buitkamp, J., Byrne, K., Collins, F., Cooper, L., Coppettiers, W., Denys, B., Drinkwater, R. D., Easterday, K., Elduque, C., Ennis, S., Erhardt, G., Ferretti, L., Flavin, N., Gao, Q., Georges, M., Gurung, R., Harlizius, B., Hawkins, G., Hetzel, J., Hirano, T., Hulme, D., Jorgensen, C., Kessler, M., Kirkpatrick, B. W., Konfortov, B., Kostia, S., Kuhn, C., Lenstra, J. A., Leveziel, H., Lewin, H. A., Leyhe, B., Lil, L., Burriel, I. Martin, McGraw, R. A., Miller, J. R., Moody, D. E., Moore, S. S., Nakane, S., Nijman, I. J., Olsaker, I., Pomp, D., Rando, A., Ron, M., Shalom, A., Teale, A. J., Thieven, U., Urquhart, B. G. D., Vage, D. -I., Van de Weghe, A., Varvio, S., Velmala, R., Vilkki, J., Weikard, R., Woodside, C., Womack, J. E., Zanotti, M., and Zaragoza, P.

Published
1997
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8. Report of the first workshop on the genetic map of bovine chromosome 1

Author

Taylor, J F, Eggen, A, Aleyasin, A, Armitage, S M, Barendse, W, Beever, J E, Bishop, M D, Brenneman, R A, Burns, B M, Davis, S K, Elo, K, Harlizius, B, Kappes, S M, Keele, J W, Kemp, S J, Kirkpatrick, B W, Lewin, H A, R Z, McGraw, R A, Pomp, D, Stone, R T, Sugimoto, Y, Teale, A J, Vaiman, D, Vilkki, J, Williams, J L, Yeh, C-C, and Zanotti, M C

Published
1998

18. Linkage of bovine erythrocyte antigen loci B, C, L, S, Z, R‘ and T’ and the serum protein loci post-transferrin 2 (PTF 2), vitamin D binding protein (GC) and albumin (ALB) to DNA microsatellite markers

Author

Kappes, S M, primary, Bishop, M D, additional, Keele, J W, additional, Penedo, M C T, additional, Hines, H C, additional, Grosz, M D, additional, Hawkins, G A, additional, Stone, R T, additional, Sunden, S L F, additional, and Beattie, C W, additional

Published
2009
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22. Relationship of Restriction Fragment Length Polymorphisms (RFLP) at the Bovine Calpastatin Locus to Calpastatin Activity and Meat Tenderness

Author

Lonergan, S. M., Ernst, C. W., Bishop, M. D., Calkins, Chris R., Koohmaraie, Mohammad, Lonergan, S. M., Ernst, C. W., Bishop, M. D., Calkins, Chris R., and Koohmaraie, Mohammad

Abstract

Restriction fragment length polymorphisms (RFLP) have been identified at the bovine calpastatin locus. The objective of the present study was to determine whether these polymorphisms are related to variations in calpastatin activity or beef tenderness in unrelated animals of mixed breeding. A sample of 83 crossbred steers from sires representing eight different breeds was examined to determine this relationship. A 2.2-kb cDNA coding for domains 2 through 4 plus a 3&#;&#;untranslated region of bovine skeletal muscle calpastatin was used as a probe for calpastatin RFLP. Polymorphisms were found using the restriction enzymes BamHI and EcoRI. Polymorphic restriction fragments for BamHI were 9.0 and 5.0 kb and for EcoRI were 6.0 and 4.0 kb. Allelic frequencies for BamHI restriction fragments were .53 for the 9.0-kb allele and .47 for the 5.0-kb allele. Allelic frequencies for EcoRI restriction fragments were .43 for the 6.0-kb allele and .57 for the 4.0-kb allele. No polymorphisms were identified using the restriction enzymes BglII, DraI, or PstI. No associations between EcoRI and BamHI RFLP and 24-h calpastatin activity or Warner-Bratzler shear force at 14 d postmortem were detected. Therefore, the polymorphic EcoRI and BamHI restriction sites within the bovine calpastatin locus do not detect DNA sequence differences responsible for variation in calpastatin activity or tenderness of aged beef. Therefore, these polymorphisms cannot be used to predict tenderness of aged beef from unrelated animals of mixed breeding. These results do not exclude the possibility that other DNA sequences in or near the bovine calpastatin gene are responsible for variation in calpastatin activity or meat tenderness. The lack of a relationship between these calpastatin RFLP and meat tenderness must be distinguished from the well-documented relationship between calpastatin activity and meat tenderness. Therefore, further development of calpastatin-based methods for predicting beef tenderness in

Published
1995

34. A genetic linkage map for cattle.

Author

Bishop, M D, primary, Kappes, S M, additional, Keele, J W, additional, Stone, R T, additional, Sunden, S L, additional, Hawkins, G A, additional, Toldo, S S, additional, Fries, R, additional, Grosz, M D, additional, and Yoo, J, additional

Published
1994
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42. Physical assignment of the bovine MHC class IIa and class IIb genes.

Author

Heß, M., Goldammer, T., Gelhaus, A., Ried, K., Rappold, G., Eggen, A., Bishop, M. D., Schwerin, M., and Horstmann, R. D.

Subjects
IR genes, GENE mapping, MAJOR histocompatibility complex, GENE libraries, YEAST fungi biotechnology, FLUORESCENCE in situ hybridization
Abstract

Screening of a bovine yeast artificial chromosome (YAC) library revealed two clones which contain most of the class II genes of the major histocompatibility complex (MHC) known to date. The YACs were mapped by fluorescence in situ hybridization (FISH) and characterized for the class II genes they contain. We found that the classic class II genes BoLA- DQA, -DQB, -DRA, and -DRB3 are located at BTA 23q21 and the non-classic class II genes DYA, DIB, LMP2, LMP7, TAP2, BoLA-DOB, -DMA, -DMB, and -DNA are located at BTA 23q12→q13. These two different mapping locations confirm and extend previous findings of a gross physical distance between classic and non-classic MHC class II genes in cattle. [ABSTRACT FROM AUTHOR]

Published
1999

49. Use of Embryo Transfer to Induce Twinning in Beef Cattle: Embryo Survival Rate, Gestation Length, Birth Weight and Weaning Weight of Calves3

Author

Davis, M. E., Harvey, W. R., Bishop, M. D., and Gearheart, W. W.

Abstract

Experiments were conducted in 1985 and 1986 at the Eastern Ohio Resource Development Center, Belle Valley, to examine the feasibility of using embryo transfer to induce twinning and to examine the influence of twinning on traits of the cow and calf. Embryos were collected from a total of 14 superovulated Angus donors on two dates each in 1985 and 1986 and were transferred to Angus recipients. A total of 124 embryos were transferred to 79 recipients, with 43 (34.7%) calves born alive. Seven of 45 (15.6%) recipients implanted with two embryos produced twins. In no case did both halves of the 15 embryos that were split to produce identical twins and implanted in the same recipient survive to birth. Proportion of calves born alive did not differ among transfer codes 3 (nonsplit embryos from two different donors implanted in separate uterine horns of the same recipient), 6 (nonsplit embryos from one embryo flush implanted in separate uterine horns of the same recipient) and 7 (nonsplit embryos from two different donors implanted in the same uterine horn of one recipient). Surgical transfers tended to result in a higher proportion of embryos surviving to birth (.43 vs .21 ; P= .16) and a higher twinning rate (.29 vs .04 ; P= .36) than did nonsurgical transfers. Age of recipient did not influence embryo survival (P= .98) or twinning rate (P= .99). Gestation length was 5 d shorter (P< .01) for twin calves than for singles. Singles were 9 kg heavier (P< .01) at birth and 32 kg heavier (P< .01) at weaning than twins. However, cows raising twins produced 108 kg (51%) more total weaning weight than did cows raising singles.

Published
1989
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50. The Relationship of Insulin-Like Growth Factor-I with Postweaning Performance in Angus Beef Cattle3

Author

Bishop, M. D., Simmen, R.C.M., Simmen, F. A., and Davis, M. E.

Abstract

This study was designed to evaluate the ontogeny of serum IGF-I (SI) concentrations and its relationship to animal performance in a 140-d postweaning feeding trial. Ninety-eight progeny representing six sires (three high and three low feed conversion) and two sexes (43 bulls and 55 heifers) with ad libitum access to feed were allocated by sire and sex to monitor individual weights and pen feed consumption. Blood serum samples were obtained at the beginning of test (average age of 230 d) and every 28 d thereafter until each animal reached a fat thickness (estimated by sonoray) of 8.9 mm. Individual serum samples were acid-ethanol extracted and measured for IGF-I peptide by heterologous RIA. Serum IGF-I concentrations differed (P< .10) between high (H) and low (L) feed conversion progeny groups at the end of the first 28-d period (125.12 vs 89.52 ng/ml) and tended to differ at the conclusion of the second 28-d period (P< .15). Weight gains of H and L groups tended to differ in the second and third 28-d periods (P= .11 and .10, respectively). Serum IGF-I concentrations differed (P< .05) between bulls and heifers for the first through fourth 28-d periods (P< .01, P< .05, P< .10 and P< .01, respectively). Phenotypic correlations indicated that pens with higher mean SI concentrations at the beginning of the test consumed less feed and had lower cumulative feed:gain ratios. This study demonstrates that selection for an improved economic trait, such as feed conversion, can alter the expression of a single gene product.

Published
1989
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