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Registro Completo |
Biblioteca(s): |
Embrapa Acre. |
Data corrente: |
09/07/2014 |
Data da última atualização: |
06/07/2021 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
PORTO, M. O.; PAULINO, M. F.; VALADARES FILHO, S. C.; DETMANN, E.; SALES, M. F. L.; CAVALI, J.; COUTO, V. R. M.; MONNERAT, J. P. I. S.; ASSIS, A. A. R. |
Afiliação: |
Universidade Federal de Rondônia (Unir); Universidade Federal de Viçosa (UFV); Universidade Federal de Viçosa (UFV); Universidade Federal de Viçosa (UFV); MAYKEL FRANKLIM LIMA SALES, CPAF-AC; Universidade Federal de Rondônia (Unir); Universidade Federal de Viçosa (UFV); Universidade Federal de Viçosa (UFV); Universidade Federal de Rondônia (Unir). |
Título: |
Levels of supplementation in the performance for beef heifers, in granzing, during the dry season. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
In: ASAS WESTERN SECTION, 2014, San Angelo. Proceedings... Texas: ASAS Western Section, 2014. |
Volume: |
v. 65 |
Idioma: |
Inglês |
Conteúdo: |
Productive performance of crossbreds Nellore beef heifers, in the growing stage receiving different supplement levels for three months grazing Brachiaria decumbens pasture were evaluated. The area was divided in five paddocks of 2.5 ha, with dry matter availability and potentially of dry matter digestible of 3.85 and 2.12 t/ha, respectively. Forty beef heifers of 191 ± 3.99 kg initial weight and 8.5 ± 0.15 months of age were assigned in a completely randomized experimental design with five treatments, and four supplementation levels. Mineral mixture (MM) (60 g/day) and multiple supplements, formulated to supply different supplementation levels in the amounts of 0.5, 1.0, 1.5 and 2.0 kg/animal more MM (60 g/day) were evaluated. The supplement had 300 g of crude protein/kg. Animals not responded significantly (P > 0.05) to the use of multiples supplements to final body weight. However, the heifers than received supplement won more weight (P £ 0.01) (372 g vs. 92g of average daily gain), in addition to highers (P £ 0.01) serum N-urea levels (20.14 vs. 12.09 mg/dL), when compared with heifers fed diets supplied only with mineral mixture. In conclusion, increasing the amount of protein supplement during the dry season, increased of performance of beef heifers. However, despite increase productive performance and intake of energy during dry season, additional higher levels of supplementation resulted in lower increment in growth. |
Palavras-Chave: |
Alimentación de ganado; Ganado de carne; Nutrición animal; Pastizales; Pastos forrajeros; Raza de bovinos Nelore; Suplementos dietéticos minerales. |
Thesagro: |
Brachiaria decumbens; Capim Brachiaria; Gado de corte; Gado Nelore; Ganho de peso; Gramínea forrageira; Nutrição animal; Pastagem; Suplemento mineral. |
Thesaurus Nal: |
Animal nutrition; Beef cattle; Cattle feeding; Dietary mineral supplements; Forage grasses; Nellore; Pastures. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/160445/1/25097.pdf
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Marc: |
LEADER 02932nam a2200505 a 4500 001 1990138 005 2021-07-06 008 2014 bl uuuu u00u1 u #d 100 1 $aPORTO, M. O. 245 $aLevels of supplementation in the performance for beef heifers, in granzing, during the dry season.$h[electronic resource] 260 $aIn: ASAS WESTERN SECTION, 2014, San Angelo. Proceedings... Texas: ASAS Western Section$c2014 300 $av. 65 490 $vv. 65 520 $aProductive performance of crossbreds Nellore beef heifers, in the growing stage receiving different supplement levels for three months grazing Brachiaria decumbens pasture were evaluated. The area was divided in five paddocks of 2.5 ha, with dry matter availability and potentially of dry matter digestible of 3.85 and 2.12 t/ha, respectively. Forty beef heifers of 191 ± 3.99 kg initial weight and 8.5 ± 0.15 months of age were assigned in a completely randomized experimental design with five treatments, and four supplementation levels. Mineral mixture (MM) (60 g/day) and multiple supplements, formulated to supply different supplementation levels in the amounts of 0.5, 1.0, 1.5 and 2.0 kg/animal more MM (60 g/day) were evaluated. The supplement had 300 g of crude protein/kg. Animals not responded significantly (P > 0.05) to the use of multiples supplements to final body weight. However, the heifers than received supplement won more weight (P £ 0.01) (372 g vs. 92g of average daily gain), in addition to highers (P £ 0.01) serum N-urea levels (20.14 vs. 12.09 mg/dL), when compared with heifers fed diets supplied only with mineral mixture. In conclusion, increasing the amount of protein supplement during the dry season, increased of performance of beef heifers. However, despite increase productive performance and intake of energy during dry season, additional higher levels of supplementation resulted in lower increment in growth. 650 $aAnimal nutrition 650 $aBeef cattle 650 $aCattle feeding 650 $aDietary mineral supplements 650 $aForage grasses 650 $aNellore 650 $aPastures 650 $aBrachiaria decumbens 650 $aCapim Brachiaria 650 $aGado de corte 650 $aGado Nelore 650 $aGanho de peso 650 $aGramínea forrageira 650 $aNutrição animal 650 $aPastagem 650 $aSuplemento mineral 653 $aAlimentación de ganado 653 $aGanado de carne 653 $aNutrición animal 653 $aPastizales 653 $aPastos forrajeros 653 $aRaza de bovinos Nelore 653 $aSuplementos dietéticos minerales 700 1 $aPAULINO, M. F. 700 1 $aVALADARES FILHO, S. C. 700 1 $aDETMANN, E. 700 1 $aSALES, M. F. L. 700 1 $aCAVALI, J. 700 1 $aCOUTO, V. R. M. 700 1 $aMONNERAT, J. P. I. S. 700 1 $aASSIS, A. A. R.
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Registro Completo
Biblioteca(s): |
Embrapa Pecuária Sudeste. |
Data corrente: |
06/12/2021 |
Data da última atualização: |
15/12/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
GONÇALVES, A. A.; GARCIA, A. R.; ROLIM FILHO, S. T.; SILVA, J. A. R. DA; MELO, D. N. DE; GUIMARÃES, T. C.; TAVARES, H. R.; SILVA, T. V. G.; SOUZA, E. B. DE; SANTOS, S. DO S. D.; OHASHI, O. M. |
Afiliação: |
ARNALDO ALGARANHAR GONÇALVES, Federal University of Pará; ALEXANDRE ROSSETTO GARCIA, CPPSE; SEBASTIÃO TAVARES ROLIM FILHO, Federal Rural University of Amazonia; JAMILE ANDRÉA RODRIGUES DA SILVA, Federal Rural University of Amazonia; DAYANA NEVES DE MELO, Federal Rural University of Amazonia; THIAGO CASTRO GUIMARÃES, Federal University of Pará; HÉLITON RIBEIRO TAVARES, Federal University of Pará; THIAGO VELASCO GUIMARÃES SILVA, Federal University of Pará; EDUARDO BAIA DE SOUZA, Federal University of Pará; SIMONE DO SOCORRO DAMASCENO SANTOS, Federal University of Pará; OTÁVIO MITIO OHASHI, Federal University of Pará. |
Título: |
Scrotal thermoregulation and sequential sperm abnormalities in buffalo bulls (Bubalus bubalis) under short-term heat stress. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Journal of Thermal Biology, v.96, feb. 2021, 102842. |
Páginas: |
10 p. |
DOI: |
https://doi.org/10.1016/j.jtherbio.2021.102842 |
Idioma: |
Inglês |
Conteúdo: |
Heat stress reduces the reproductive capacity of bulls raised in tropical climate. However, the reestablishment of scrotal thermoregulation and the dynamics of sperm defects emergence after stress are not completely known in buffaloes. Thus, the study aimed to evaluate the effect of short-term heat stress over scrotal thermoregulation and sperm attributes, relating them to spermatogenesis stages. Five buffalo bulls went through scrotal insulation during 48 h (from day 0 to day 2). Semen samples were collected every 7 days (from day - 7 to day 49) and progressive motility, viability, and sperm morphology. Heat stress significantly destabilized scrotal thermoregulation (P < 0.001). Scrotal temperature was from 4.2 to 6.3 C lower than the core body temperature, except on insulation days (P < 0.001), and returned to the basal condition five days after the removal of the stressing stimulus. More significant deleterious effects were observed in sperm morphology than in cell concentration, motility, and viability. The chronology of morphologic defects expression demonstrated tail defects (days 7?14), cytoplasmic droplets (days 14-28), and head defects (day 28), returning to pre-insulation condition 35 days after the thermal challenge. Thus, hyperthermia harmed more intensely spermatozoa in epididymal transit, elongated spermatids, and secondary spermatocytes. It is concluded that water buffalo bulls present a peculiar manifestation of sperm morphology after short-term stress, indicating an important difference related to the bovine species. Therefore, during the andrological evaluation of buffalo bulls, it is necessary to avoid the allometric extrapolation between these species. MenosHeat stress reduces the reproductive capacity of bulls raised in tropical climate. However, the reestablishment of scrotal thermoregulation and the dynamics of sperm defects emergence after stress are not completely known in buffaloes. Thus, the study aimed to evaluate the effect of short-term heat stress over scrotal thermoregulation and sperm attributes, relating them to spermatogenesis stages. Five buffalo bulls went through scrotal insulation during 48 h (from day 0 to day 2). Semen samples were collected every 7 days (from day - 7 to day 49) and progressive motility, viability, and sperm morphology. Heat stress significantly destabilized scrotal thermoregulation (P < 0.001). Scrotal temperature was from 4.2 to 6.3 C lower than the core body temperature, except on insulation days (P < 0.001), and returned to the basal condition five days after the removal of the stressing stimulus. More significant deleterious effects were observed in sperm morphology than in cell concentration, motility, and viability. The chronology of morphologic defects expression demonstrated tail defects (days 7?14), cytoplasmic droplets (days 14-28), and head defects (day 28), returning to pre-insulation condition 35 days after the thermal challenge. Thus, hyperthermia harmed more intensely spermatozoa in epididymal transit, elongated spermatids, and secondary spermatocytes. It is concluded that water buffalo bulls present a peculiar manifestation of sperm morphology after short-term stress, indic... Mostrar Tudo |
Palavras-Chave: |
Sperm morphology; Spermiogram; Water buffalo. |
Thesaurus NAL: |
Thermal stress; Thermoregulation. |
Categoria do assunto: |
G Melhoramento Genético |
Marc: |
LEADER 02702naa a2200325 a 4500 001 2137118 005 2021-12-15 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.jtherbio.2021.102842$2DOI 100 1 $aGONÇALVES, A. A. 245 $aScrotal thermoregulation and sequential sperm abnormalities in buffalo bulls (Bubalus bubalis) under short-term heat stress.$h[electronic resource] 260 $c2021 300 $a10 p. 520 $aHeat stress reduces the reproductive capacity of bulls raised in tropical climate. However, the reestablishment of scrotal thermoregulation and the dynamics of sperm defects emergence after stress are not completely known in buffaloes. Thus, the study aimed to evaluate the effect of short-term heat stress over scrotal thermoregulation and sperm attributes, relating them to spermatogenesis stages. Five buffalo bulls went through scrotal insulation during 48 h (from day 0 to day 2). Semen samples were collected every 7 days (from day - 7 to day 49) and progressive motility, viability, and sperm morphology. Heat stress significantly destabilized scrotal thermoregulation (P < 0.001). Scrotal temperature was from 4.2 to 6.3 C lower than the core body temperature, except on insulation days (P < 0.001), and returned to the basal condition five days after the removal of the stressing stimulus. More significant deleterious effects were observed in sperm morphology than in cell concentration, motility, and viability. The chronology of morphologic defects expression demonstrated tail defects (days 7?14), cytoplasmic droplets (days 14-28), and head defects (day 28), returning to pre-insulation condition 35 days after the thermal challenge. Thus, hyperthermia harmed more intensely spermatozoa in epididymal transit, elongated spermatids, and secondary spermatocytes. It is concluded that water buffalo bulls present a peculiar manifestation of sperm morphology after short-term stress, indicating an important difference related to the bovine species. Therefore, during the andrological evaluation of buffalo bulls, it is necessary to avoid the allometric extrapolation between these species. 650 $aThermal stress 650 $aThermoregulation 653 $aSperm morphology 653 $aSpermiogram 653 $aWater buffalo 700 1 $aGARCIA, A. R. 700 1 $aROLIM FILHO, S. T. 700 1 $aSILVA, J. A. R. DA 700 1 $aMELO, D. N. DE 700 1 $aGUIMARÃES, T. C. 700 1 $aTAVARES, H. R. 700 1 $aSILVA, T. V. G. 700 1 $aSOUZA, E. B. DE 700 1 $aSANTOS, S. DO S. D. 700 1 $aOHASHI, O. M. 773 $tJournal of Thermal Biology$gv.96, feb. 2021, 102842.
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