1968
DOI: 10.2527/jas1968.272339x
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Inbreeding and Swine Productivity Traits

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Cited by 33 publications
(27 citation statements)
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“…Significant estimates of -1.14 and -1.17 for number born alive and at 154 days were found for the Chester White breed and indicated poorer than expected purebred perfor mance. The effect of inbreeding on litter size was not significant at any age but produced regressions which were in close agreement with other published estimates (Dickerson e^ , 1946(Dickerson e^ , , 1954Bradford , 1958;Bereskin ^ al., 1968;Berruecos ^ £l. , 1970 Smith and King (1964) but were lower than others (Smith and McLaren, 1967;O'Ferrall et al, 1968;Bereskin £l., 1974;1976a).…”
Section: Similar Advantages Of Dams Of Yorkshire Breeding Over Dams Osupporting
confidence: 81%
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“…Significant estimates of -1.14 and -1.17 for number born alive and at 154 days were found for the Chester White breed and indicated poorer than expected purebred perfor mance. The effect of inbreeding on litter size was not significant at any age but produced regressions which were in close agreement with other published estimates (Dickerson e^ , 1946(Dickerson e^ , , 1954Bradford , 1958;Bereskin ^ al., 1968;Berruecos ^ £l. , 1970 Smith and King (1964) but were lower than others (Smith and McLaren, 1967;O'Ferrall et al, 1968;Bereskin £l., 1974;1976a).…”
Section: Similar Advantages Of Dams Of Yorkshire Breeding Over Dams Osupporting
confidence: 81%
“…Inbreeding regression coefficients expressed as change in the observed value per 10% increase in inbreeding were -9.8 (P<.01), 6.0 (P<.05) and -.076 (P<.01) for 154-day weight, days to 220 pounds and rate of gain, respectively. Other researchers have indicated little effect of inbreeding on weights through 56 days but substantial effects on 154-day pig weights ranging from -3.4 to -9.0 pounds per 10% change in in breeding (Dickerson et al, 1946(Dickerson et al, , 1954Bradford £t al., 1958;Bereskin ^ al. , 1968;Berruecos e_t , 1970; S. Jungst, Animal Science Depart ment, Iowa State University, unpublished results, 1978).…”
Section: J-kimentioning
confidence: 99%
“…(GLODEK und OLDIGS, 1981), auf Fruchtbarkeitsmerkmale und auf die Gewichtsentwicklung bis zum Alter von 12 Monaten dargestellt. Untersuchungen über Inzuchtdepressionen beim Schwein sind bisher nur aus gezielten Selektionsexperimenten (BERESKIN et al, 1968(BERESKIN et al, , 1970 oder bei kleinen lokalen Populationen, wie z. B. bei Iberischen Schweinelinien (TORO et al, 1988;SILIO et al, 1994) zuchtkoeffizienten größer als Null verglichen werden (BERESKIN et al 19681970-TAKAHASHI etal, 1991 In zu c h tkoefflzie n t S au en in % In zu c h tkoeff izle n t S au e n in '/• Abb.…”
Section: Zusammenfassungunclassified
“…Untersuchungen über Inzuchtdepressionen beim Schwein sind bisher nur aus gezielten Selektionsexperimenten (BERESKIN et al, 1968(BERESKIN et al, , 1970 oder bei kleinen lokalen Populationen, wie z. B. bei Iberischen Schweinelinien (TORO et al, 1988;SILIO et al, 1994) zuchtkoeffizienten größer als Null verglichen werden (BERESKIN et al 19681970-TAKAHASHI etal, 1991 In zu c h tkoefflzie n t S au en in % In zu c h tkoeff izle n t S au e n in '/• Abb. 4.: LSQ-Mittelwerte für das mittlere Geburtsgewicht für Inzuchtklasssen der Sauen (Werte auf der X-Achse stellen die mittlere Inzucht der jeweiligen Klasse dar) (Least square means for average birth weight for classes of inbreeding of sows) (values on the x-axis represent the average inbreeding of sows within each class)…”
Section: Zusammenfassungunclassified
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