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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados; Embrapa Pantanal; Embrapa Semiárido. |
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Data corrente: |
15/07/1996 |
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Data da última atualização: |
05/05/2000 |
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Autoria: |
SOARES, J. G. G. |
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Título: |
Seasonal cattle diet on a desert shrub range in Southeastern Arizona. |
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Ano de publicação: |
1980 |
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Fonte/Imprenta: |
[Tucson]: University of Arizona, 1980. |
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Páginas: |
59p. |
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Idioma: |
Inglês
Português |
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Notas: |
Dissertacao Mestrado. |
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Conteúdo: |
The diet study was performed for a period of one year, starting in June, 1979. Seasonal cattle diets were determined using the microhistological technique of fecal analysis. Fecal samples were collected on three different allotments of a desert srub range in southeastern. Data from botanical composition of fecal samples were analysed using a two-way analysis of variance procedures to test variability among sampling locations, dates and possible interactions for the Whitehouse and Creosote allotment. A one-way analysis of variance procedures was used to test variability among dates for the Van Gausig allotment. For the WHitehouse allotment, diets varied greatly among sampling locations and dates. Variations among locations was influenced by the differences in vegetative types. The overall diet durint the study period was composed of 56% shrubs, 27% forbs and 9% grasses. There were conssitently more shrubs than forbs and grasses in all seasons except spring. Saltbusch was highest in the diets in September, mesquite in October and pricklypear in January. FIlaree was the most important forb component of the diets which was highly preferred during the spring when it comprised approximately 52% of cattle diets. Annual grasses such as Mediterranean grass and foxtail brome were the majos grass components of diets in spring, and tobosa grass in the summer. Great variation in the diets among locations was observed. In December, for example, saltbush comprised 60% of the diets at the Company Well location, but (...). MenosThe diet study was performed for a period of one year, starting in June, 1979. Seasonal cattle diets were determined using the microhistological technique of fecal analysis. Fecal samples were collected on three different allotments of a desert srub range in southeastern. Data from botanical composition of fecal samples were analysed using a two-way analysis of variance procedures to test variability among sampling locations, dates and possible interactions for the Whitehouse and Creosote allotment. A one-way analysis of variance procedures was used to test variability among dates for the Van Gausig allotment. For the WHitehouse allotment, diets varied greatly among sampling locations and dates. Variations among locations was influenced by the differences in vegetative types. The overall diet durint the study period was composed of 56% shrubs, 27% forbs and 9% grasses. There were conssitently more shrubs than forbs and grasses in all seasons except spring. Saltbusch was highest in the diets in September, mesquite in October and pricklypear in January. FIlaree was the most important forb component of the diets which was highly preferred during the spring when it comprised approximately 52% of cattle diets. Annual grasses such as Mediterranean grass and foxtail brome were the majos grass components of diets in spring, and tobosa grass in the summer. Great variation in the diets among locations was observed. In December, for example, saltbush comprised 60% of the diets at the C... Mostrar Tudo |
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Palavras-Chave: |
Bovinae; Catle diet; Dieta alimentar; Estados Unidos; Grazing animals; Native range; Southeastern; Sudeste. |
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Thesagro: |
Bovino; Dieta; Nutrição Animal; Pastagem Nativa; Pecuária. |
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Thesaurus Nal: |
animal feeding; animal nutrition; Arizona; cattle; diet; United States. |
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Categoria do assunto: |
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L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02429nam a2200361 a 4500
001 1559854
005 2000-05-05
008 1980 bl uuuu m 00u1 u #d
100 1 $aSOARES, J. G. G.
245 $aSeasonal cattle diet on a desert shrub range in Southeastern Arizona.
260 $a[Tucson]: University of Arizona$c1980
300 $a59p.
500 $aDissertacao Mestrado.
520 $aThe diet study was performed for a period of one year, starting in June, 1979. Seasonal cattle diets were determined using the microhistological technique of fecal analysis. Fecal samples were collected on three different allotments of a desert srub range in southeastern. Data from botanical composition of fecal samples were analysed using a two-way analysis of variance procedures to test variability among sampling locations, dates and possible interactions for the Whitehouse and Creosote allotment. A one-way analysis of variance procedures was used to test variability among dates for the Van Gausig allotment. For the WHitehouse allotment, diets varied greatly among sampling locations and dates. Variations among locations was influenced by the differences in vegetative types. The overall diet durint the study period was composed of 56% shrubs, 27% forbs and 9% grasses. There were conssitently more shrubs than forbs and grasses in all seasons except spring. Saltbusch was highest in the diets in September, mesquite in October and pricklypear in January. FIlaree was the most important forb component of the diets which was highly preferred during the spring when it comprised approximately 52% of cattle diets. Annual grasses such as Mediterranean grass and foxtail brome were the majos grass components of diets in spring, and tobosa grass in the summer. Great variation in the diets among locations was observed. In December, for example, saltbush comprised 60% of the diets at the Company Well location, but (...).
650 $aanimal feeding
650 $aanimal nutrition
650 $aArizona
650 $acattle
650 $adiet
650 $aUnited States
650 $aBovino
650 $aDieta
650 $aNutrição Animal
650 $aPastagem Nativa
650 $aPecuária
653 $aBovinae
653 $aCatle diet
653 $aDieta alimentar
653 $aEstados Unidos
653 $aGrazing animals
653 $aNative range
653 $aSoutheastern
653 $aSudeste
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
18/01/2023 |
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Data da última atualização: |
11/04/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 4 |
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Autoria: |
GARCIA, A. O.; OTTO, P. I.; GLATZL JUNIOR, L. A.; ROCHA, R. de F. B.; SANTOS, M. G. dos; OLIVEIRA, D. A. de; SILVA, M. V. G. B.; PANETTO, J. C. do C.; MACHADO, M. A.; VERNEQUE, R. da S.; GUIMARÃES, S. E. F. |
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Afiliação: |
ARIELLY OLIVEIRA GARCIA, Universidade Federal de Viçosa; PAMELA ITAJARA OTTO, Universidade Federal de Santa Maria; LUIZ AFONSO GLATZL JUNIOR, Universidade Federal de Juiz de Fora; RENATA DE FÁTIMA BRETANHA ROCHA, Universidade Federal de Viçosa; MATEUS GUIMARÃES DOS SANTOS, Universidade Federal de Viçosa; DANIELE ALVES DE OLIVEIRA, Universidade Federal de Santa Maria; MARCOS VINICIUS GUALBERTO B SILVA, CNPGL; JOAO CLAUDIO DO CARMO PANETTO, CNPGL; MARCO ANTONIO MACHADO, CNPGL; RUI DA SILVA VERNEQUE, CNPGL; SIMONE ELIZA FACIONI GUIMARÃES, Universidade Federal de Viçosa. |
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Título: |
Pedigree reconstruction and population structure using SNP markers in Gir cattle. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Journal of Applied Genetics, v. 64, p. 329-340, 2023. |
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DOI: |
https://doi.org/10.1007/s13353-023-00747-x |
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Idioma: |
Inglês |
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Conteúdo: |
Our objective was to establish a SNPs panel for pedigree reconstruction using microarrays of different densities and evaluate the genomic relationship coefficient of the inferred pedigree, in addition to analyzing the population structure based on genomic analyses in Gir cattle. For parentage analysis and genomic relationship, 16,205 genotyped Gir animals (14,458 females and 1747 males) and 1810 common markers to the four SNP microarrays were used. For population structure analyses, including linkage disequilibrium, effective population size, and runs of homozygosity (ROH), genotypes from 21,656 animals were imputed. Likelihood ratio (LR) approach was used to reconstruct the pedigree, deepening the pedigree and showing it is well established in terms of recent information. Coefficients for each relationship category of the inferred pedigree were adequate. Linkage disequilibrium showed rapid decay. We detected a decrease in the effective population size over the last 50 generations, with the average generation interval around 9.08 years. Higher ROH-based inbreeding coefficient in a class of short ROH segments, with moderate to high values, was also detected, suggesting bottlenecks in the Gir genome. Breeding strategies to minimize inbreeding and avoid massive use of few proven sires with high genetic value are suggested to maintain genetic variability in future generations. In addition, we recommend reducing the generation interval to maximize genetic progress and increase effective population size. MenosOur objective was to establish a SNPs panel for pedigree reconstruction using microarrays of different densities and evaluate the genomic relationship coefficient of the inferred pedigree, in addition to analyzing the population structure based on genomic analyses in Gir cattle. For parentage analysis and genomic relationship, 16,205 genotyped Gir animals (14,458 females and 1747 males) and 1810 common markers to the four SNP microarrays were used. For population structure analyses, including linkage disequilibrium, effective population size, and runs of homozygosity (ROH), genotypes from 21,656 animals were imputed. Likelihood ratio (LR) approach was used to reconstruct the pedigree, deepening the pedigree and showing it is well established in terms of recent information. Coefficients for each relationship category of the inferred pedigree were adequate. Linkage disequilibrium showed rapid decay. We detected a decrease in the effective population size over the last 50 generations, with the average generation interval around 9.08 years. Higher ROH-based inbreeding coefficient in a class of short ROH segments, with moderate to high values, was also detected, suggesting bottlenecks in the Gir genome. Breeding strategies to minimize inbreeding and avoid massive use of few proven sires with high genetic value are suggested to maintain genetic variability in future generations. In addition, we recommend reducing the generation interval to maximize genetic progress and increase ef... Mostrar Tudo |
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Thesagro: |
Bovino; DNA; Endogamia; Gado Gir; Marcador Genético. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/248991/1/Pedigree-reconstruction-and-population-structure-using-SNP-markers-in-Gir-cattle.pdf
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Marc: |
LEADER 02441naa a2200313 a 4500
001 2151052
005 2023-04-11
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s13353-023-00747-x$2DOI
100 1 $aGARCIA, A. O.
245 $aPedigree reconstruction and population structure using SNP markers in Gir cattle.$h[electronic resource]
260 $c2023
520 $aOur objective was to establish a SNPs panel for pedigree reconstruction using microarrays of different densities and evaluate the genomic relationship coefficient of the inferred pedigree, in addition to analyzing the population structure based on genomic analyses in Gir cattle. For parentage analysis and genomic relationship, 16,205 genotyped Gir animals (14,458 females and 1747 males) and 1810 common markers to the four SNP microarrays were used. For population structure analyses, including linkage disequilibrium, effective population size, and runs of homozygosity (ROH), genotypes from 21,656 animals were imputed. Likelihood ratio (LR) approach was used to reconstruct the pedigree, deepening the pedigree and showing it is well established in terms of recent information. Coefficients for each relationship category of the inferred pedigree were adequate. Linkage disequilibrium showed rapid decay. We detected a decrease in the effective population size over the last 50 generations, with the average generation interval around 9.08 years. Higher ROH-based inbreeding coefficient in a class of short ROH segments, with moderate to high values, was also detected, suggesting bottlenecks in the Gir genome. Breeding strategies to minimize inbreeding and avoid massive use of few proven sires with high genetic value are suggested to maintain genetic variability in future generations. In addition, we recommend reducing the generation interval to maximize genetic progress and increase effective population size.
650 $aBovino
650 $aDNA
650 $aEndogamia
650 $aGado Gir
650 $aMarcador Genético
700 1 $aOTTO, P. I.
700 1 $aGLATZL JUNIOR, L. A.
700 1 $aROCHA, R. de F. B.
700 1 $aSANTOS, M. G. dos
700 1 $aOLIVEIRA, D. A. de
700 1 $aSILVA, M. V. G. B.
700 1 $aPANETTO, J. C. do C.
700 1 $aMACHADO, M. A.
700 1 $aVERNEQUE, R. da S.
700 1 $aGUIMARÃES, S. E. F.
773 $tJournal of Applied Genetics$gv. 64, p. 329-340, 2023.
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Embrapa Gado de Leite (CNPGL) |
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