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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
16/02/2017 |
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Data da última atualização: |
30/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AZEVEDO, R. A.; MACHADO, F. S.; CAMPOS, M. M.; FURINI, P. M.; RUFINO, S. R.; PEREIRA, L. G. R.; TOMICH, T. R.; COELHO, S. G. |
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Afiliação: |
R. A. Azevedo, UFMG; FERNANDA SAMARINI MACHADO, CNPGL; MARIANA MAGALHAES CAMPOS, CNPGL; P. M. Furini, UFMG; S. R. Rufino, UFMG; LUIZ GUSTAVO RIBEIRO PEREIRA, CNPGL; THIERRY RIBEIRO TOMICH, CNPGL; S. G. Coelho, UFMG. |
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Título: |
The effects of increasing amounts of milk replacer powder added to whole milk on feed intake and performance in dairy heifers. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Journal of Dairy Science, v. 99, n. 10, p. 8018-8027, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to evaluate the effects on feed intake, heifer performance, and health of increasing the total solids (TS) content of liquid feed (whole milk) by adding increasing amounts of milk replacer powder during the pre- and postweaning periods. Crossbred Holstein-Gyr heifers (n = 60) were assigned to 1 of 4 treatments (n = 15 per group), which consisted of different TS concentrations: 12.5, 15.0, 17.5, and 20.0% of liquid feed. Heifers received 6 L of liquid feed per day, divided into 2 equal meals (0800 and 1600 h) and provided in buckets, from 5 to 55 d of age. From 56 to 59 d of age, the total amount of liquid feed was reduced by half, maintaining only morning feedings. Heifers were weaned at 60 d and monitored until 90 d of age. Water and starter were provided ad libitum during the entire experiment. Corn silage was included in the diet during the postweaning period (70 d of age). Feed intake and health scores were evaluated daily. Body weight and body frame development were recorded weekly. Starting at 14 d, ruminal pH was measured every other week. Laboratory analysis determined that the actual TS contents of the liquid feed were 13.5, 16.1, 18.2, and 20.4%, for the proposed 12.5, 15.0, 17.5, and 20.0% TS treatments, respectively. The osmolality of liquid feed treatments was 265 to 533 mOsm/L. Intake of liquid feed was similar among treatments from 4 wk of age. During the preweaning period, starter intake, fecal score, and days with diarrhea were similar among treatments. Ruminal pH at weaning averaged 6.2 and was similar among treatments. Increasing concentrations of TS in the liquid feed were associated with linear increases in average daily gain, final body weight, and growth performance, but linear decreases in feed efficiency. During the postweaning period, intake of starter, corn silage, and water were similar among treatments, as well as average daily gain and feed efficiency. Final body weight and growth performance during the postweaning period also increased linearly with concentration of TS in liquid feed. Increasing the concentration of TS in liquid feed up to 20.4% increased performance and body frame development in dairy heifers during the pre- and postweaning periods and had no effects on solid feed intake or health. MenosThe aim of this study was to evaluate the effects on feed intake, heifer performance, and health of increasing the total solids (TS) content of liquid feed (whole milk) by adding increasing amounts of milk replacer powder during the pre- and postweaning periods. Crossbred Holstein-Gyr heifers (n = 60) were assigned to 1 of 4 treatments (n = 15 per group), which consisted of different TS concentrations: 12.5, 15.0, 17.5, and 20.0% of liquid feed. Heifers received 6 L of liquid feed per day, divided into 2 equal meals (0800 and 1600 h) and provided in buckets, from 5 to 55 d of age. From 56 to 59 d of age, the total amount of liquid feed was reduced by half, maintaining only morning feedings. Heifers were weaned at 60 d and monitored until 90 d of age. Water and starter were provided ad libitum during the entire experiment. Corn silage was included in the diet during the postweaning period (70 d of age). Feed intake and health scores were evaluated daily. Body weight and body frame development were recorded weekly. Starting at 14 d, ruminal pH was measured every other week. Laboratory analysis determined that the actual TS contents of the liquid feed were 13.5, 16.1, 18.2, and 20.4%, for the proposed 12.5, 15.0, 17.5, and 20.0% TS treatments, respectively. The osmolality of liquid feed treatments was 265 to 533 mOsm/L. Intake of liquid feed was similar among treatments from 4 wk of age. During the preweaning period, starter intake, fecal score, and days with diarrhea were simi... Mostrar Tudo |
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Palavras-Chave: |
Calf. |
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Thesagro: |
Performance. |
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Thesaurus Nal: |
osmolality; total solids. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 03048naa a2200253 a 4500
001 2064433
005 2023-01-30
008 2016 bl uuuu u00u1 u #d
100 1 $aAZEVEDO, R. A.
245 $aThe effects of increasing amounts of milk replacer powder added to whole milk on feed intake and performance in dairy heifers.$h[electronic resource]
260 $c2016
520 $aThe aim of this study was to evaluate the effects on feed intake, heifer performance, and health of increasing the total solids (TS) content of liquid feed (whole milk) by adding increasing amounts of milk replacer powder during the pre- and postweaning periods. Crossbred Holstein-Gyr heifers (n = 60) were assigned to 1 of 4 treatments (n = 15 per group), which consisted of different TS concentrations: 12.5, 15.0, 17.5, and 20.0% of liquid feed. Heifers received 6 L of liquid feed per day, divided into 2 equal meals (0800 and 1600 h) and provided in buckets, from 5 to 55 d of age. From 56 to 59 d of age, the total amount of liquid feed was reduced by half, maintaining only morning feedings. Heifers were weaned at 60 d and monitored until 90 d of age. Water and starter were provided ad libitum during the entire experiment. Corn silage was included in the diet during the postweaning period (70 d of age). Feed intake and health scores were evaluated daily. Body weight and body frame development were recorded weekly. Starting at 14 d, ruminal pH was measured every other week. Laboratory analysis determined that the actual TS contents of the liquid feed were 13.5, 16.1, 18.2, and 20.4%, for the proposed 12.5, 15.0, 17.5, and 20.0% TS treatments, respectively. The osmolality of liquid feed treatments was 265 to 533 mOsm/L. Intake of liquid feed was similar among treatments from 4 wk of age. During the preweaning period, starter intake, fecal score, and days with diarrhea were similar among treatments. Ruminal pH at weaning averaged 6.2 and was similar among treatments. Increasing concentrations of TS in the liquid feed were associated with linear increases in average daily gain, final body weight, and growth performance, but linear decreases in feed efficiency. During the postweaning period, intake of starter, corn silage, and water were similar among treatments, as well as average daily gain and feed efficiency. Final body weight and growth performance during the postweaning period also increased linearly with concentration of TS in liquid feed. Increasing the concentration of TS in liquid feed up to 20.4% increased performance and body frame development in dairy heifers during the pre- and postweaning periods and had no effects on solid feed intake or health.
650 $aosmolality
650 $atotal solids
650 $aPerformance
653 $aCalf
700 1 $aMACHADO, F. S.
700 1 $aCAMPOS, M. M.
700 1 $aFURINI, P. M.
700 1 $aRUFINO, S. R.
700 1 $aPEREIRA, L. G. R.
700 1 $aTOMICH, T. R.
700 1 $aCOELHO, S. G.
773 $tJournal of Dairy Science$gv. 99, n. 10, p. 8018-8027, 2016.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
16/02/2005 |
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Data da última atualização: |
11/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ROCHA, C. D.; LAMA, S. N. del; REGITANO, L. C. de A. |
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Afiliação: |
CRISTIANO DOSUALDO ROCHA, UFSCAR; SFLVIA NASSIF DEL LAMA, UFSCAR; LUCIANA CORREIA DE ALMEIDA REGITANO, CPPSE. |
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Título: |
Lack of genetic structuring among tropical brazilian wood stork populations and low genetic differentiation from north american populations. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Biotropica, v.36, n.2, p.248-258, 2004. |
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DOI: |
https://doi.org/10.1111/j.1744-7429.2004.tb00316.x |
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Idioma: |
Inglês |
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Conteúdo: |
The Wood Stork (Mycteria americana) is a wading bird inhabiting subtropical and tropical regions of the American continent. This species is considered endangered in the United States. We compared variability and genetic structuring of nine Brazilian Pantanal subpopulations with an North American population using eight allozyme loci data (MPI, ICD, NSP, EST-D, LDH, PGM, 6PGD, and PEP-A) and four microsatellite loci data (WSl, WS2, WS4, and WS6). Average expected heterozygosity of Pantanal population was similar (0.198 t 0.065) to that expected for the North American population (0.23 1 ? 0.066). No significant genetic differentiation was found among Pantanal subpopula- tions (fir = 0.012) and low differentiation was detected between Pantanal and North American populations (&r = 0.023). Lack of differentiation among Pantanal subpopulations may have been due to high gene flow level among birds of neighbor breeding colonies and low natal philopatry. We propose that low differentiation between North and South American populations has arisen either because these populations occupied neighboring regions during late glaciation or because there is a continuous gene flow between them, via Central American or northern South American populations. |
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Palavras-Chave: |
Genetic structure; Mirrosatellites; Wood stork. |
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Thesaurus NAL: |
Allozymes; Birds; Brazil; Gene flow; Mycteria americana; Pantanal. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02070naa a2200265 a 4500
001 1044774
005 2022-05-11
008 2004 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1111/j.1744-7429.2004.tb00316.x$2DOI
100 1 $aROCHA, C. D.
245 $aLack of genetic structuring among tropical brazilian wood stork populations and low genetic differentiation from north american populations.$h[electronic resource]
260 $c2004
520 $aThe Wood Stork (Mycteria americana) is a wading bird inhabiting subtropical and tropical regions of the American continent. This species is considered endangered in the United States. We compared variability and genetic structuring of nine Brazilian Pantanal subpopulations with an North American population using eight allozyme loci data (MPI, ICD, NSP, EST-D, LDH, PGM, 6PGD, and PEP-A) and four microsatellite loci data (WSl, WS2, WS4, and WS6). Average expected heterozygosity of Pantanal population was similar (0.198 t 0.065) to that expected for the North American population (0.23 1 ? 0.066). No significant genetic differentiation was found among Pantanal subpopula- tions (fir = 0.012) and low differentiation was detected between Pantanal and North American populations (&r = 0.023). Lack of differentiation among Pantanal subpopulations may have been due to high gene flow level among birds of neighbor breeding colonies and low natal philopatry. We propose that low differentiation between North and South American populations has arisen either because these populations occupied neighboring regions during late glaciation or because there is a continuous gene flow between them, via Central American or northern South American populations.
650 $aAllozymes
650 $aBirds
650 $aBrazil
650 $aGene flow
650 $aMycteria americana
650 $aPantanal
653 $aGenetic structure
653 $aMirrosatellites
653 $aWood stork
700 1 $aLAMA, S. N. del
700 1 $aREGITANO, L. C. de A.
773 $tBiotropica$gv.36, n.2, p.248-258, 2004.
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Embrapa Pecuária Sudeste (CPPSE) |
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