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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
18/09/2017 |
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Data da última atualização: |
18/09/2017 |
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Autoria: |
HULET, C. V.; EL-SHEIKH, A. S.; POPE, A. L.; CASIDA, L. E. |
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Título: |
The effects of shearing and level of feeding on fertility of rams. |
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Ano de publicação: |
1956 |
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Fonte/Imprenta: |
Journal of Animal Science, v. 15, n. 3, p. 617-624, Aug. 1956. |
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DOI: |
10.2527/jas1956.153617x |
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Idioma: |
Inglês |
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Conteúdo: |
Groups of approximately 20 rams and 80 ewes in 1953 and similar groups in 1954 were each divided as lambs into two lots, one of which received roughage plus grain (a fattening ration) and the other only roughage. All were sheared in April and half of each group of rams was resheared at monthly intervals until breeding was completed. Breeding was from August 20 to October 20, when the sheep were yearlings. Each ram was mated to two ewes from each lot. One of these two ewes was slaughtered at three days and the ova recovered to determine fertilization; the remaining ewe was slaughtered at 40 days to determine embryo survival. In addition, various semen characteristics were studied during the breeding period. The sheared rams had a significantly higher fertilization rate than the unsheared rams. Likewise, a significantly larger proportion of ewes bred to the sheared rams had normal embryos at 40 days of gestation than did those bred to the unsheared rams. No difference in fertilizing ability was found between the rams on the two feeding levels. The sheared rams had significantly lower rectal temperatures than the unsheared groups in both years but the rams which received only a roughage ration had significantly lower body temperatures only in 1954. No significant relationship was found between various measures of semen quality and fertility in either year though the group with the highest fertility in each year (sheared, roughage-only group) also had the best semen quality each year. MenosGroups of approximately 20 rams and 80 ewes in 1953 and similar groups in 1954 were each divided as lambs into two lots, one of which received roughage plus grain (a fattening ration) and the other only roughage. All were sheared in April and half of each group of rams was resheared at monthly intervals until breeding was completed. Breeding was from August 20 to October 20, when the sheep were yearlings. Each ram was mated to two ewes from each lot. One of these two ewes was slaughtered at three days and the ova recovered to determine fertilization; the remaining ewe was slaughtered at 40 days to determine embryo survival. In addition, various semen characteristics were studied during the breeding period. The sheared rams had a significantly higher fertilization rate than the unsheared rams. Likewise, a significantly larger proportion of ewes bred to the sheared rams had normal embryos at 40 days of gestation than did those bred to the unsheared rams. No difference in fertilizing ability was found between the rams on the two feeding levels. The sheared rams had significantly lower rectal temperatures than the unsheared groups in both years but the rams which received only a roughage ration had significantly lower body temperatures only in 1954. No significant relationship was found between various measures of semen quality and fertility in either year though the group with the highest fertility in each year (sheared, roughage-only group) also had the best semen quality each... Mostrar Tudo |
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Palavras-Chave: |
Fertility; Fertilization; Quality. |
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Thesagro: |
Sêmen. |
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Thesaurus Nal: |
Animal feeding; Rams; Reproductive performance; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
null
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
17/01/2008 |
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Data da última atualização: |
17/07/2018 |
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Autoria: |
MACIEL, R. M.; LOPES, S. T. dos A.; SANTURIO, J. M.; MARTINS, D. B.; ROSA, A. P.; EMANUELLI, M. P. |
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Afiliação: |
Roberto Marinho Maciel, Universidade Federal de Santa Maria - UFSM; Sonia Terezinha dos Anjos Lopes, Univerisdade Federal de Santa Maria - UFSM/Departamento de Clínica de Pequenos Animais; Janio Morais Santurio, Universidade Federal de Santa Maria - UFSM/Departamento de Microbiologia; Danieli Brolo Martins, Universidade Federal de Santa Maria - UFSM; Alexandre Pires Rosa; Mauren Picada Emanuelli, Universidade Federal de Santa Maria - UFSM. |
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Título: |
Função hepática e renal de frangos de corte alimentados com dietas com aflatoxinas e clinoptilolita natural |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 42, n. 9, p. 1221-1225, set. 2007 |
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Idioma: |
Português |
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Notas: |
Título em inglês: Hepatic and renal functions in broilers fed on diets with aflatoxins and natural clinoptilolite. |
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Conteúdo: |
O objetivo deste trabalho foi avaliar os minerais séricos e as funções hepática e renal de frangos de corte, alimentados com dietas com aflatoxinas e dietas com aflatoxinas e argila clinoptilolita natural. Foram utilizados 528 frangos de corte machos, da linhagem Ross, distribuídos em seis tratamentos com quatro repetições cada: T1 - testemunha: ração sem aflatoxina ou clinoptilolita; T2 - ração com 5 ppm de aflatoxinas; T3 - ração com 0,25% de clinoptilolita; T4 - ração com 5 ppm de aflatoxinas e 0,25% de clinoptilolita; T5 - ração com 0,5% de clinoptilolita; e T6 - ração com 5 ppm de aflatoxinas e 0,5% de clinoptilolita. As aves foram submetidas aos tratamentos do 1o ao 42o dia de idade. Foram abatidos 72 animais, e foram analisadas as concentrações séricas de cálcio, fósforo, uréia, creatinina, ácido úrico, colesterol, triglicerídeos e gamaglutamil-transferase (GGT). As aflatoxinas diminuem o nível sérico de colesterol. A clinoptilolita diminui o nível sérico do ácido úrico, quando na concentração de 0,25%. As aflatoxinas com 0,25% de clinoptilolita diminuem os níveis séricos da creatinina, do ácido úrico e do colesterol. As aflatoxinas acrescidas por 0,5% de clinoptilolita diminuem os níveis séricos da creatinina e do colesterol e elevam os de gamaglutamil-transferase. |
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Palavras-Chave: |
adsorbent; adsorvente; concentração de minerais; mineral concentration; mycotoxin; zeolite. |
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Thesagro: |
Micotoxina; Nutrição Animal. |
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Thesaurus NAL: |
animal nutrition. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/106710/1/Funcao-hepatica.pdf
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Marc: |
null
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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