Estimation of genetic and phenotypic parameters in a closed ...

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va L]ST OF TABLES Table I Sunrmary of heritability estirnates of reproductive traits Page 4 | $smmery of heritability estimates of carcass measuremenÈs and age to market weight traits 3 Managra breed development pattern and the current farrowing groups 15 I 4 Number of litters contributíng to the study per year per group 5 Nr:mber of observations contributed to Lhe study per year per group 6 Regression coefficients used to adjust carcass Deasurements for carcass weíght L6 Z0 ZL 7 Analysis of variance for litter size 23 B Analysís of covariance 24 9 Analysis of variance 27 10 Analysis of covaríance . 29 11 Means and standard deviations of reproductíve traiÈs for each farrowing group for 10 years 34 12 Means and standard deviations of reproducËive traítsfor eaeh year 35 13 Escimated heritabilitíes and their standard errors for each of five reproductive traits from the sire cornponent of variance L4 Phenotypic and genetic correlations among reproductive traits 39 37 15 Means and standard deviations of carcass measurements and age to market weight for each sex . 4L 16 Means and standard deviations of carcass measurenents and age to markeÈ weight traits for each farrowíng group 43
va1 LIST OF TABLES Table Page L7 Means and standard deviations of carcass Illeasurements and age to market weight traíts for each year 44 18 Heritability estim¡tes for carcass measurements and age to market weight traits 46 19 Phenotypic correlations among nine carcass measurements and age to market weight traits 48 20 Genetic correlations ainorlg carcess Eeasurements and age to m¡rket weighË 50
Page 1 and 2: ESTIMATION OF GENET]C AND PHENOTYPI
Page 3 and 4: ACKNOI^rLEDGÐ{ENTS The author wish
Page 5 and 6: iÍi carcass length,77.22!2.47 cm¡
Page 7: TABLE OF CONTENTS Page B. Carcass m
Page 11 and 12: INTRODUCTION The heritabilíty of t
Page 13 and 14: granddaughter on granddam. The heri
Page 15 and 16: Table 1 (Contlnued) Tralcs a n Meth
Page 17 and 18: 7 r^/ith the number of pigs born al
Page 19 and 20: Table 2 (Contlnued) TraÍtg h2 Meth
Page 21 and 22: 11 as 0.31 and 0.40 by Edwardsand O
Page 23 and 24: 13 and backfat thickness r^7as nega
Page 25 and 26: Table 3. Managra breed development
Page 27 and 28: L7 Adjusted Y, = Y. - b (Xt-X") whe
Page 29 and 30: 19 9) 'PercenË Ham I{eight The pro
Page 31 and 32: 2I Table 6, Regression coefficients
Page 33 and 34: a') variance is given in Table 7. T
Page 35 and 36: 25 where: "ott(*y) 2 ã: "r(x) = to
Page 37 and 38: ¿/ l. Heritability estimates - The
Page 39 and 40: 29 Standard errors (S.E.) following
Page 41 and 42: 31 tots (*v) toto(*y) = totw(*y) =
Page 43 and 44: -f1 RESULTS AND DTSCUSSION A. Repro
Page 45 and 46: Table i-2. Means and standard devla
Page 47 and 48: a1 Table 13. Estímated heritabilit
Page 49 and 50: Table 14. PhenotypÍca and geneticb
Page 51 and 52: 4L Table 15 - Means and standard de
Page 53 and 54: 43 Table 16. Means and standard dev
Page 55 and 56: 45 Most of the heritabilities deriv
Page 57 and 58: 47 moderately heritable while carca
Page 59 and 60:
,o AJ et 41. (L969), Roy er al. (19
Page 61 and 62:
51 to phenotypic correlations in mo
Page 63 and 64:
53 SI]MMARY AND CONCLUSION Data fro
Page 65 and 66:
55 also improve Ëhe others where s
Page 67 and 68:
57 Flock, D.K. 1970. Genetic parame
Page 69 and 70:
APPENDIX s9
Page 71 and 72:
Appendix rr. Anal-ysis of covarÍan
Page 73 and 74:
Appendlx rrr' Ànalysfs of varlance
Page 75 and 76:
Appendlx IV (Conrinued) Mean cross
Page 77 and 78:
Appendlx IV (Conrlnued) Mean cross
Page 79 and 80:
Appendlx IV (Contlnued) Mean cross
Page 81 and 82:
^Appendix IV (Continued) Mea4 cross
Page 83 and 84:
Appendix IV (Conctnued) Mean crosà
Page 85 and 86:
75 Appendix V. Table of differentia
Page 87 and 88:
77 Appendix VI. (Continued) Body wt
Page 89:
79 Appendix VI. (Continued) Body wt
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