Crossfostering
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Influência do peso dos leitões na uniformização no desempenho de primíparas suínas e suas leitegadas. / Influence of piglets weight at crossfostering on the performance of primiparous sows and their litters
The objective of this study was to evaluate the effect of crossfostering piglets with different birth weight on feed intake, body reserve losses and reproductive performance of primiparous sows and on performance of their litters until weaning. Primiparous sows were allocated in three groups: group A (n= 31) ¿ litters with 14 Light piglets (1.0-1.2 kg); gro
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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2. Desempenho de leitegadas após a uniformização cruzada de leitões entre fêmeas de ordem de parto 1 e 5 / Performance of Litter After Crossfostering of Piglets Between Females of Parity Order 1 and 5
Background: Crossfostering is the transference of piglets to either equalize litter size or to formation of homogeneous litters according to the birth weight. It is used in order to improve survival rate and weight gain of piglets during lactation. Several aspects influence the results of crossfostering, as the moment when this management is performed, size
Publicado em: 2011
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3. Influência do peso dos leitões na uniformização no desempenho de primíparas suínas e suas leitegadas. / Influence of piglets weight at crossfostering on the performance of primiparous sows and their litters
O objetivo desse trabalho foi avaliar a influência da uniformização de leitegadas com leitões de diferentes pesos no consumo alimentar, assim como, nas perdas corporais no período lactacional, no desempenho reprodutivo subsequente de primíparas e o desempenho de suas leitegadas até o desmame. Primíparas suínas foram separadas em 3 grupos: grupo A (n
Publicado em: 2011
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4. Comportamento e desempenho de leitões leves submetidos à uniformização com leitões de pesos distintos. / Behaviour and growth performance of low-birth weight piglets cross-fostered with piglets of different birth weights
O objetivo do trabalho foi avaliar o comportamento, a sobrevivência e o desempenho de leitões leves quando uniformizados com leitões de maior peso. Os leitões foram transferidos para 60 fêmeas receptoras, sendo divididos em três grupos (G) (n= 20): G1- 12 leitões leves (0,80-1,25 kg); G2- seis leitões leves e seis leitões médios (1,40-1,60 kg) e G3
Publicado em: 2011
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5. Pup age and aggressive behavior in lactating rats
High levels of aggressive behaviors against intruders in the nest area are displayed by female rats during the first 10 days after delivery, declining thereafter to very low levels, even though lactation continues. Cross-fostering experiments were undertaken to test the hypothesis that pup age may affect aggression in lactating rats. The behavior of females
Publicado em: 2010
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6. Comportamento dos leitões e das fêmeas durante as mamadas e desempenho dos leitões quando submetidos a três diferentes manejos de uniformização / Behavior of piglets and sows during nursings and pig performance when submited to three different management of crossfostering
O experimento avaliou o comportamento da fêmea e dos leitões e o desempenho destes do nascimento ao desmame após as leitegadas serem submetidas a três diferentes manejos de uniformização. A uniformização foi realizada em média 20,1 ± 0,4 horas (amplitude de 14,3 – 24,7 horas) após o parto. Foram formados três grupos: 100B (leitegada composta po
Publicado em: 2010
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7. Parâmetros inflamatórios, imunológicos e histopatológicos da administração prolongada da Ipomoea carnea em ratos: 1. Avaliação em animais adultos 2. Estudo perinatal / Inflammatory, immunological and histopathological parameters of prolonged administration of Ipomoea carnea in rats: 1. Evaluation of adult animals 2. Perinatal study
The aim of this study was to evaluate the toxic effect of I. Carnea and its toxins on the immune system of rats, and to evaluate its effects on mothers and offspring when administered to dams during gestation or lactation. An alkaloid-rich plant extract (RAF) was added to drinking water to obtain doses equivalent to 3.0 and 15.0g/kg of dry leaves for 14 and
Publicado em: 2006
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8. Pup age and aggressive behavior in lactating rats
High levels of aggressive behaviors against intruders in the nest area are displayed by female rats during the first 10 days after delivery, declining thereafter to very low levels, even though lactation continues. Cross-fostering experiments were undertaken to test the hypothesis that pup age may affect aggression in lactating rats. The behavior of females
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-09
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9. Perinatal development and adult blood pressure
A growing body of evidence supports the concept of fetal programming in cardiovascular disease in man, which asserts that an insult experienced in utero exerts a long-term influence on cardiovascular function, leading to disease in adulthood. However, this hypothesis is not universally accepted, hence animal models may be of value in determining potential ph
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-07
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10. Heritability of Nestling Growth in Cross-Fostered European Starlings Sturnus Vulgaris
In altricial birds, growth rates and nestling morphology vary between broods. For natural selection to produce evolutionary change in these variables, there must exist heritable variation. Since nestling traits are not any longer present in parents, traditional offspring-parent regressions cannot estimate heritabilities of these. In this study, a partial cro
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11. Partitioning Average and Heterotic Components of Direct and Maternal Genetic Effects on Growth in Mice Using Crossfostering Techniques
Crossfostering was performed using lines selected for increased 6-week body weight (H6) and increased 3-to 6-week postweaning gain (M16) and their reciprocal F1 crosses as nurse dams in the selected crossfostering group, and base population controls (C2, ICR) and their reciprocal F1 crosses in the control group. The offspring suckled were H6, M16 and F2 cros
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12. Vaccination with inactivated influenza A virus during pregnancy protects neonatal mice against lethal challenge by influenza A viruses representing three subtypes.
A single intraperitoneal injection of pregnant mice with a monovalent Formalin-inactivated influenza A virus vaccine protected their offspring against a lethal challenge dose of the same influenza A virus H3N2, H2N2, and H1N1 subtypes, as well as against challenge with the other two subtypes. Degree of protection was vaccine dose related. Cross-fostering of