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| Moraes,Gentil Vanini de; Macedo,Francisco de Assis Fonseca de; Lourenço,Fábio José; Macedo,Filipe Gomes de; Rigolon,Luiz Paulo; Nogueira,Guilherme de Paula; Santello,Graziela Aparecida. |
| The incidence of estrus in nulliparous Santa Inês (n = 16), Texel (n = 16) and Ile de France (n = 15) ewes fed two levels of crude protein (CP, 12 or 16%) was monitored from July 2005 to December 2006, and seasonality in the Santa Inês breed in the south of Brazil was characterized. The solar radiation data were recorded daily, and samples of blood were collected biweekly for determination of the plasma concentration of progesterone in Santa Inês lambs at, on average, 11±1 months of age. The female Santa Inês lambs, in the experimental period, stayed among teaser rams with a powdered-dye-ink mixture placed on their chest to mark the females that accepted to be mounted. Santa Inês ewes did not manifest estrus in the first fortnight of November and in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Photoperiodic; Progesterone; Reproduction; Seasonality. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013001000003 |
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| Tirloni,Rayf Roberto; Rocha,Fábio Alcântara; Lourenço,Fábio José; Martins,Lílian Rigatto. |
| The objective of this work was to evaluate the influence of low-stress handling (LSH) on reactivity score and pregnancy rate during fixed-time artificial insemination (FTAI) for extensively raised Nellore cows. Multiparous cows (n = 126) were randomly allocated into two groups: G1 (n = 66) and G2, the control group (n = 60). Group G1 was subjected to LSH, in which the animals were handled in a calm and quiet manner, without loud noises or physical aggression, using the point of balance, respecting the flight zone and using flags to supplement handling. Group G2 was handled following the typical procedure, with yelling, kicking and the use of electric prods and sticks. On D0, D8 and D10, FTAI was performed in both groups. Reactivity was scored on D0, D8 and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bos indicus cattle; Conception; Reaction; Reproduction; Stress. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000700002 |
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| Santello,Graziela Aparecida; Macedo,Francisco de Assis Fonseca de; Macedo,Rosa Maria Gomes de; Martins,Elias Nunes; Lourenço,Fábio José; Dias,Fábio Jacobs. |
| Foram utilizadas 80 ovelhas Santa Inês, com 47,49 ± 3,76 kg de peso vivo, cobertas com reprodutores Dorper e alimentadas com concentrado com 15,20; 22,48; 26,52 e 35,65% de proteína bruta (PB) no terço inicial de gestação. As ovelhas, durante o dia, permaneceram em pastagem de capim-aruana (Panicum maximum cv. Aruana). Ao nascimento, foram realizadas biópsias no músculo Semitendinosus esquerdo de cordeiros machos, para avaliar o número e o diâmetro das fibras musculares. Na fase de terminação, os cordeiros foram distribuídos em dois grupos e alimentados com uma dieta controle, contendo 16,18% de proteína bruta (PB) e 79,64% nutrientes digestíveis totais (NDT), sem grão de girassol; ou com uma dieta contendo 9,10% de grãos de girassol (15,03% de PB e 78,96%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Desenvolvimento ponderal; Ovinos; Tratamento materno. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001000027 |
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