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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) |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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TESE_Use of a precision feeding program during gestation improves the performance of high-producing sows.pdf | 1,58 MB | Adobe PDF | Visualizar/Abrir | |
IMPACTOS DA PESQUISA_Use of a precision feeding program during gestation improves the performance of high-producing sows.pdf | 150,78 kB | Adobe PDF | Visualizar/Abrir |
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