Direct and maternal effects on birth and weaning weight in sheep

Burfening, P. J.; Kress, D. D.

doi:10.1016/0921-4488(93)90058-p

Cited by 43 publications

(34 citation statements)

References 11 publications

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“…As the age of lamb increases, the environmental relationship between individual traits and maternal potentials after birth to weaning and afterwards, will gradually reduce. Burfening and Kress (1993) utilized information of maternal and paternal half-sibs, full-sibs and offspring on dam and sire for three breeds, Ramboulliet, Targhee and Columbia, and obtained maternal heritability of 0.30 to 0.65 and 0.07 to 0.48 for birth weight and 120-d weight, respectively, which are generally larger than direct heritability estimates. All the estimates on maternal heritability for carcass traits were generally lower compared to direct heritability, except for the estimate on WB.…”

Section: Results Of Investigation and Discussionmentioning

confidence: 99%

Phenotypic and genetic characteristics of growth and carcass traits of Lori-Bakhtiari sheep

et al. 2007

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Abstract:In this study, direct and maternal heritabilities were estimated for growth traits and carcass characteristics in Lori-Bakhtiari sheep. Data for birth weight (BW; n=5826), weaning weight (WW; n=5408), body weight at six months of age (6MW; n=4237), body weight at slaughter (SW; n=396), cold carcass weight (CCW; n=291), lean weight (LW; n=204), bone weight (WB; n=291), fat weight (WF; n=204) and fat-tail weight (FTW; n=396) were used to estimate the heritabilities. The data for first three traits had been collected during seventeen years, 1990 to 2006, while for other traits had been collected during six years, 2000 to 2006. Genetic parameters including both direct and maternal genetic effects were estimated using multivariate animal models, and a Derivative Free Restricted Maximum Likelihood (DFREML) approach. The direct heritability for BW, WW, 6MW, SW, CCW, LW, WB, WF and FTW were 0.30 ± 0.03, 0.13 ± 0.03, 0.20 ± 0.03, 0.24 ± 0.06, 0.16 ± 0.06, 0.16 ± 0.06, 0.20 ± 0.11, 0.23 ± 0.11, and 0.27 ± 0.11, respectively. Maternal heritability estimates were 0.22, 0.17, 0.06, 0.10, 0.09, 0.15, 0.26, 0.06 and 0.07 for BW, WW, 6MW, SW, CCW, LW, WB, WF and FTW, respectively. Consequently, genetic progress is possible for growth traits and carcass composition by selection.

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Section: Results Of Investigation and Discussionmentioning

confidence: 99%

Phenotypic and genetic characteristics of growth and carcass traits of Lori-Bakhtiari sheep

et al. 2007

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“…However, higher heritability estimates of birth weight were reported for other breeds (17)(18)(19)(20) . Lower estimates were reported by others (5,(21)(22)(23)(24) , in several breeds ( Table 5).…”

Section: Peso Al Destete Ajustado a 75 Díasmentioning

confidence: 97%

“…Sin embargo, otros autores (17)(18)(19)(20) encontraron estimadores más altos de heredabilidad para peso al nacimiento en otras razas. En cambio, en otros trabajos (5,(21)(22)(23)(24) , se mencionan estimadores menores (Cuadro 5).…”

Section: Birth Weightunclassified

“…Los estimadores de las varianzas genética aditiva y materna para AW variaron de 2.11 a 4.39 kg 2 y de 0.88 a 2.60 kg 2 dependiendo del modelo. Los estimadores de las varianzas genética aditiva y ambiental permanente materna con el modelo 5 fueron menores que las encontradas por Burfening y Kress (19) en una raza compuesta. Los estimadores de heredabilidades directa y materna para AW variaron de 0.17 a 0.41 y de 0.09 a 0.25, respectivamente.…”

Section: Peso Posdestete Ajustado a 120 Díasunclassified

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Genetic parameter estimates for growth traits in Katahdin sheep using different models

Manzanilla-Pech

Vázquez

Zepeda

et al. 2018

Rev. Mex. Cienc. Pecu.

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“…Selection in sheep for increased litter size at birth puts higher demands on the ability of ewes to raise large lambs. Inadequate maternal care invariably leads to early death of offspring because lamb growth and development depend heavily on care provided by the dam (Burfening and Kress, 1993). This is especially true for twins (Nowak, 1996).…”

Section: Introductionmentioning

confidence: 99%

Identification of SNPs within the PRLR gene and effects on maternal behavior in sheep

Wang

et al. 2015

Genet. Mol. Res.

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ABSTRACT. The prolactin receptor gene (PRLR) plays an essential role in maternal behavior. The aim of the study was to detect PRLR mutations in exon 10, using a polymerase chain reaction-single stranded conformation polymorphism method, and to determine the association between mutations in this region with maternal behavior traits in Chinese Hu sheep. Polymorphisms were detected only in the gene region amplified by the primer P3; three genotypes (AA, AB and BB) were observed. The genotype BB was predominant in the ewe study population, and genotype distributions were in agreement with the Hardy-Weinberg equilibrium (P > 0.05). There was no significant difference between observations for licking and kicking behaviors of AA and AB genotype individuals (P > 0.05), but there was a significant difference (0.01 < P ≤ 0.05), when both were compared with the BB genotype. Significant differences were observed in suckling behavior between AA and AB genotype individuals (0.01 < P ≤ 0.05), and the difference between these two genotypes and BB was highly significant (P ≤ 0.01). No obvious difference was observed between 17537 PRLR gene effects on maternal behavior in sheep ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 14 (4): 17536-17543 (2015) the genotypes in behavior of suckling rejection (P > 0.05). These results contribute to methods for selection and breeding through marker-assisted selection for maternal behavior traits in Hu sheep.

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Direct and maternal effects on birth and weaning weight in sheep

Cited by 43 publications

References 11 publications

Phenotypic and genetic characteristics of growth and carcass traits of Lori-Bakhtiari sheep

Phenotypic and genetic characteristics of growth and carcass traits of Lori-Bakhtiari sheep

Genetic parameter estimates for growth traits in Katahdin sheep using different models

Identification of SNPs within the PRLR gene and effects on maternal behavior in sheep

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