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Bibliographic Details
Main Author:	Yoleisy García
Format:	Artículo científico
Language:	es
Published:	Instituto de Ciencia Animal 2008
Subjects:	Agrociencias Conejos cruce F1 nacimiento fertilidad
Online Access:	https://www.redalyc.org/articulo.oa?id=193015490003
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Fuentes genéticas de variación que influyen en la fertilidad y en rasgos del nacimiento de conejos F1 Yoleisy García Raquel E. Ponce de León Gladys S. Guzmán Agrociencias Conejos cruce F1 nacimiento fertilidad Para estudiar las fuentes genéticas de variación que podrían influir en la fertilidad y en rasgos de prolificidad al nacer de conejos de cruces F1, entre las razas California (C), Caoba (CAO), Chinchilla (CH), Nueva Zelanda (N) y Semigigante (S), se utilizó la información producida por 260 reproductoras y 80 sementales. Estos correspondían a 20 cruces F1, pertenecientes al período de mayo 2003 a abril 2004. Con la información obtenida se conformaron dos conjuntos de datos, para analizar los rasgos de fertilidad y prolificidad al nacer. En el procesamiento estadístico se utilizaron cuatro modelos lineales de efectos fijos, según el procedimiento General Lineal Model (GLM) del Statistical Analysis System (SAS). Este contempló efectos genéticos de interés: genotipo (paterno y materno), cruces específicos, pares de recíprocos y presencia o ausencia de una raza prefijada. En los rasgos de fertilidad no influyeron los efectos genéticos considerados. Sin embargo, en la prolificidad al nacer, el par de recíprocos C.CH-CH.C mostró ventajas de 0.8 gazapos, con respecto al par CHN- NCH. Además, se favorecieron los genotipos que no tienen la raza Nueva Zelanda, para nacidos totales y nacidos vivos. Las pequeñas diferencias encontradas, atribuibles a los diferentes efectos genéticos considerados, identificaron como combinaciones exitosas para los nacidos totales a los pares CCH-CHC, CCAO-CAOC, CAOCH-CHCAO, CHS-SCH, CAON-NCAO y NS-SN. Con este trabajo se demuestra la necesidad de nuevos estudios en mejores condiciones ambientales, fundamentalmente de alimentación. 2008 artículo científico 0034-7485 https://www.redalyc.org/articulo.oa?id=193015490003 es http://www.redalyc.org/revista.oa?id=1930 Revista Cubana de Ciencia Agrícola application/pdf Instituto de Ciencia Animal Revista Cubana de Ciencia Agrícola (Cuba) Num.4 Vol.42

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// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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