desempenho de porcas alimentadas durante a gestação, do primeiro ao terceiro parto, com rações com diferentes níveis de proteína bruta effects of feeding different dietary crude protein levels on performance of sows during pregnancy, from the first to third parturition
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ID: 251859
2006
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Abstract
Foram utilizadas 30 porcas mestiças (118,18±12,2 kg, espessura de toucinho de 13,82±1,42 mm e 220 dias de idade) distribuídas em um fatorial 3 x 3 com parcelas subdivididas com dez repetições, em um delineamento inteiramente ao acaso, em que as ordens de parto constituíram as parcelas e os níveis de proteína, as subparcelas. Foram avaliados os efeitos da inclusão de três níveis de PB (10,0; 13,5 e 17,0%) na ração durante a gestação sobre o desempenho das fêmeas em três ciclos reprodutivos sucessivos completos. O ganho de peso da porca na gestação foi influenciado pelo nível de proteína na dieta de gestação, mas não pela ordem de parto. O ganho em ET durante a gestação e a perda durante a lactação não foram influenciados significativamente pelos níveis de PB da ração e pela ordem de parto. A eficiência energética não diferiu entre os tratamentos nem conforme a ordem de parto. A ordem de parto afetou o peso médio da leitegada ao nascimento (PMLN), o peso médio da leitegada ao desmame (PMLD), o número de leitões nascidos totais (NT) e nascidos vivos (NV) e o número de leitões desmamados (ND). O desempenho da leitegada para ganho médio diário do leitão (GDP) não variou entre os tratamentos. O peso relativo (%) não sofreu efeito de nenhum dos fatores estudados. O consumo de ração (CR) durante a lactação e o intervalo desmame-cobertura (IDC) foram influenciados pelos tratamentos, sendo que o CR foi afetado também pela ordem de parto. Independentemente da ordem de parto, o nível de 17% de PB proporcionou o melhor ganho de tecido corporal durante a gestação e o menor IDC, enquanto o nível de 10% promoveu o maior consumo de ração. A ordem de parto influenciou o NT, NV, GPP, PMLN e PMLD, que foram melhores no terceiro parto.
Thirty crossbred sows averaging 118.18±12.2 kg of BW, backfat thickness of 13.82±1.42 mm and 220 days old were assigned to a completely randomized design in a split plot scheme with 10 replicates and parturition orders included in the plots (3 x 3 factorial arrangement) and CP ingestion levels (10.0, 13.5, and 17.0%) in the sub-plots. The effects of dietary CP ingestion levels on female performance in three complete successive reproductive cycles were evaluated during the pregnancy. Sow weight gain in the pregnancy was affected only by dietary protein levels in the gestation. No significant effect of both dietary protein level and parturition order on BT gain during the pregnancy and the loss during the lactation was observed. Neither treatments nor parity orders affected energy efficiency. Average litter weight at birth, average litter weight at weaning, number of total piglets born (NTPB) and born alive (BA) and number of weaned pigs were affected by parity order. Litter performance for daily average weight gain (DAWG) of piglet did not vary among the treatments. No treatment effect on the relative weight (%) was observed. Feed intake (FI) during the lactation and weaning-mating interval (WMI) were affected by the treatments, and FI was affected only by parity order. The 17% CP level resulted in better body tissue gain during the pregnancy and lower WMI and the 10% CP level the highest feed intake, and that was independent of parity order. The parity order affected NTPB and BA, litter DAWG and WMI, that were greater in the third parity.
Thirty crossbred sows averaging 118.18±12.2 kg of BW, backfat thickness of 13.82±1.42 mm and 220 days old were assigned to a completely randomized design in a split plot scheme with 10 replicates and parturition orders included in the plots (3 x 3 factorial arrangement) and CP ingestion levels (10.0, 13.5, and 17.0%) in the sub-plots. The effects of dietary CP ingestion levels on female performance in three complete successive reproductive cycles were evaluated during the pregnancy. Sow weight gain in the pregnancy was affected only by dietary protein levels in the gestation. No significant effect of both dietary protein level and parturition order on BT gain during the pregnancy and the loss during the lactation was observed. Neither treatments nor parity orders affected energy efficiency. Average litter weight at birth, average litter weight at weaning, number of total piglets born (NTPB) and born alive (BA) and number of weaned pigs were affected by parity order. Litter performance for daily average weight gain (DAWG) of piglet did not vary among the treatments. No treatment effect on the relative weight (%) was observed. Feed intake (FI) during the lactation and weaning-mating interval (WMI) were affected by the treatments, and FI was affected only by parity order. The 17% CP level resulted in better body tissue gain during the pregnancy and lower WMI and the 10% CP level the highest feed intake, and that was independent of parity order. The parity order affected NTPB and BA, litter DAWG and WMI, that were greater in the third parity.
| Reference Key |
lima2006revistadesempenho
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|---|---|
| Authors | ;Kedson Raul de Souza Lima;Aloízio Soares Ferreira;Juarez Lopes Donzele;Maria Cristina Manno;Diogo Araújo;Horacio Santiago Rostagno;Francisco Carlos Oliveira Silva |
| Journal | european journal of lipid science and technology |
| Year | 2006 |
| DOI |
10.1590/S1516-35982006000700017
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| URL | |
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