Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/59151
Título: Use of a precision feeding program during gestation improves the performance of high-producing sows
Título(s) alternativo(s): Uso de um programa de nutrição de precisão durante a gestação melhora o desempenho de fêmeas suínas de alta produção
Autores: Abreu, Márvio Lobão Teixeira de
Silva, Bruno Alexander Nunes
Araújo, Wagner Azis Garcia de
Moreira, Rennan Herculano Rufino
Teixeira, Alexandre de Oliveira
Palavras-chave: Lactation
Precision Nutrition
Sow Nutrition
Lactação
Nutrição de Precisão
Nutrição de Suínos
Data do documento: 11-Jul-2024
Editor: Universidade Federal de Lavras
Citação: DOMINGOS, Rodrigo de Lima. Use of a precision feeding program during gestation improves the performance of high-producing sows. Tese (Doutorado em Zootecnia) - Universidade Federal de Lavras, Lavras, 2024
Resumo: Current gestating sow feeding strategies are based on using a single diet regardless of parity or gestation stage. Precision feeding (PF) of the individual sows allows dynamic changes in amino acid and energy requirements throughout gestation. The hypothesis of the study was that meeting the daily predicted amino acid and energy demands of gestating sows using a mathematical model and automatic precision feeder to establish the nutrition programs, would improve reproductive and productive performance compared to conventional feeding programs. Seventy-five mixed-parity sows were distributed among 3 treatments. A treatment managed as flat curve (FLAT: 2.1 kg/d, 1 – 110 d), a high-low-high curve (HLH: 2.2 kg/d, 1 – 49 d; 2.0 kg/d, 50 – 84 d; 2.6 kg/d, 85 – 110 d), where sows received the same diet with 3.2 Mcal/kg of metabolizable energy (ME) and 0.7 g/kg of standardized ileal digestible (SID) lysine. For the PF treatment, feeding level and blend of 2 basal diets (3.0 Mcal/kg of ME; 8.0 and 2.0 g/kg of SID lysine for high and low lysine, respectively) was adjusted daily for each sow to accurately meet estimated amino acid and energy requirements based on live weight, gestation stage and parity. Sows fed PF were heavier on d 110 of gestation (P = 0.011) and tended to increase total number of born (P = 0.092) and born alive (P = 0.077). Sows fed PF showed a higher litter weight (P = 0.003) at birth, lower lactation feed intake (P = 0.010), higher milk yield (P = 0.043) and a larger litter size (P = 0.050). Precision feeding sows also presented an improved maternal transformation index (P = 0.013) when compared to HLH and FLAT. In conclusion, our results demonstrate that the application of PF strategies based on daily nutrient adjustments is highly beneficial for high-producing sows to support the dynamic needs for nutrient availability for the sow ́s body growth, mammary gland and fetal development.
URI: http://repositorio.ufla.br/jspui/handle/1/59151
Aparece nas coleções:Zootecnia - Doutorado (Teses)



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