ArticleJournal of animal science2025
Effects of increasing standard Ileal digestible lysine and metabolizable energy levels in lactation diets fed to young and mature sows.
Article in Journal of animal science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
3 citing papers in PubMed.
- Adjustment of branched-chain amino acid balance fails to prevent feed intake decline in lactating sows fed high soybean meal diets.Journal of animal science · 2025Article
- Determining the appropriate soybean meal inclusion level in lactation diets for sows endemically infected with porcine reproductive and respiratory syndrome virus (PRRSv).Translational animal science · 2025Article
- Effect of feeding a gestation diet to sows for 5 days post-farrowing and feeding a liquid mixture of milk replacer and starter diet to suckling piglets on growth, selected health parameters and faecal microbiota of suckling pigs on two research farms.Translational animal science · 2025Article
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The objective was to evaluate increasing standard ileal digestible (SID) lysine (Lys) and metabolizable energy (ME) above recommended inclusion levels fed to young (parity 1 to 2) and mature (parity 3 to 5) lactating sows. A total of 741 sows (371 parity 1 to 2, 370 parity 3 to 5) were fed in a 2 × 2 factorial arrangement of treatments in a randomized complete block design. Factors included SID Lys (0.85% vs. 1.11%) and ME (3.18 Mcal/kg vs. 3.33 Mcal/kg). Diets were formulated to deliver 62 g of SID Lys at 0.85% inclusion and 23.2 Mcal of energy to sows that consume 7.30 kg of complete feed per day. Overall, sows consumed 61 g/d SID Lys and 22.6 Mcal/kg, but because of nutrient intake differences between young and mature sows, outcome variables were analyzed separately and not statistically compared. There were no differences for either SID Lys or ME treatment in lactation feed intake (P ≥ 0.27) or change in body weight (P ≥ 0.19) for young sows. Young sows fed 3.33 Mcal/kg ME had 0.31 fewer post-cross foster mortalities (P < 0.01) resulting in weaned litters that were 4.06 kg heavier (P < 0.01) than litters from young sows fed 3.18 Mcal/kg ME. Young sows fed 1.11% SID Lys and 3.33 Mcal/kg ME had the fewest (P ≤ 0.03) sows bred by day 7 compared to all other treatments. There was an interaction (P = 0.03) for wean-to-estrus interval for young sows were young sows fed 1.11% SID Lys and 3.33 Mcal/kg ME were at least 3.27 d longer than young sows fed 0.85% SID Lys and 3.33 Mcal/kg ME or 1.11% SID Lys and 3.18 Mcal/kg ME. Young sows fed 3.33 Mcal/kg ME had a nearly 7% improvement in lactation G:F (0.40 vs. 0.43; P < 0.01) compared to young sows fed 3.18 Mcal/kg ME. The percentage of mature sows fed 1.11% SID Lys bred by day 7 was 7.0 percentage units less (P = 0.06) when fed 3.33 Mcal/kg ME compared to 3.18 Mcal/kg ME. Feed efficiency of mature sows fed 1.11% SID Lys (0.38) was 7.89% greater (P < 0.01) than mature sows fed 0.85% SID Lys (0.35). Increasing either SID Lys or ME energy to young and mature sows had little influence on sow or pig performance, but simultaneously increasing both SID Lys and ME negatively impacted subsequent breeding performance.
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