ArticleJournal of animal science and biotechnology2020
Effect of dietary near ideal amino acid profile on heat production of lactating sows exposed to thermal neutral and heat stress conditions.
Article in Journal of animal science and biotechnology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 12 citations in OpenAlex.
- Material consequences: an initial assessment of the influence of flooring type on lactating sow thermoregulation in summer heat.Translational animal science · 2026Article
- The Role of Nutrition Across Production Stages to Improve Sow Longevity.Animals : an open access journal from MDPI · 2025Review
- Phenotypic assessment of F0 generation lactating sows genomically selected for heat stress tolerance.Journal of animal science · 2025Article
- Mid infrared spectroscopy combined with chemometrics as tool to monitor the impact of heat stress and dietary interventions in lactating sows.International journal of biometeorology · 2025Article
- Research progress on anti-stress nutrition strategies in swine.Animal nutrition (Zhongguo xu mu shou yi xue hui) · 2023Review
- A meta-regression analysis to evaluate the influence of branched-chain amino acids in lactation diets on sow and litter growth performance.Journal of animal science · 2022Article
- Effects of Reduced Dietary Protein at High Temperature in Summer on Growth Performance and Carcass Quality of Finishing Pigs.Animals : an open access journal from MDPI · 2022Article
- Electronically controlled cooling pads can improve litter growth performance and indirect measures of milk production in heat-stressed lactating sows.Journal of animal science · 2022Article
- Dietary Supplementation of Enzymatically TreatedFrontiers in veterinary science · 2022Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundReduced protein diet manifested potential to mitigate heat production based on the concept of ideal amino acid profile. The hypothesis of this study was that lactating sows fed a low crude protein (LCP) diet with supplemental amino acid produce less heat compared to those fed a high crude protein (HCP) diet under both thermal neutral (TN) and heat stress (HS) conditions.
methodsThirty-two lactating sows were allotted to HCP (193 g CP/kg) and LCP (140 g CP/kg) diets under thermal neutral (TN, 21 ± 1.5 °C) or cycling heat stress (HS, 32 ± 1.5 °C daytime and 24 ± 1.5 °C nighttime) conditions. Diets contained 0.90% SID lysine and 10.8 MJ/kg net energy. Positive pressure indirect calorimeters were used to measure gas exchange in individual sows with litters, and individual piglets on days 4, 8, 14 and 18. Sow and litter weights were recorded on days 1, 10 and 21.
resultsSow total heat production (THP) was calculated by subtracting litter THP from sow + litter THP based on BW
conclusionReduction in THP in sows fed LCP diet was largely associated with THP on day 18 of lactation under HS conditions. Feeding LCP diets alleviated the increased body temperature in sows under HS conditions throughout lactation, which was accompanied by a reduction in respiration rate. Total heat production is associated with days in lactation, in particular under HS conditions with THP appearing to peak between days 14 and 18.
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Registered trials
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