{"doi":"10.2527/2003.813594x","title":"The importance of a high feed intake during lactation of primiparous sows nursing large litters1","abstract":null,"journal":"Journal of Animal Science","year":2003,"id":604539,"datarank":9.868313247916781,"base_score":5.1647859739235145,"endowment":5.1647859739235145,"self_citation_contribution":0.7747178960885273,"citation_network_contribution":9.093595351828254,"self_endowment_contribution":0.7747178960885273,"citer_contribution":9.093595351828254,"corpus_percentile":null,"corpus_rank":null,"citation_count":174,"citer_count":170,"citers_with_citation_signal":139,"citers_with_endowment":139,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1551118,"name":"E. J. Apeldoorn","orcid":null,"position":1,"is_corresponding":false},{"id":1551119,"name":"E. Kanis","orcid":null,"position":2,"is_corresponding":false},{"id":1551120,"name":"M. W. A. Verstegen","orcid":null,"position":3,"is_corresponding":false},{"id":1551121,"name":"K. H. de Greef","orcid":null,"position":4,"is_corresponding":false},{"id":1551117,"name":"J. J. Eissen","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"The importance of a high feed intake during lactation of primiparous sows nursing large litters1","abstract":"The objective of this study was to investigate whether nursing a large number of piglets has negative effects on lactation and postweaning performance of primiparous sows and whether a greater lactation feed intake can prevent possible negative effects. Data were recorded on 268 ad libitum-fed sows of three genotypes (G1, G2, and G3) in an experiment where litter size was standardized to 8, 11, or 14 piglets during a 4-wk lactation. Compared to G1 and G2, G3 sows were heavier (P < 0.05) and leaner (P < 0.05) at weaning of their litters, lost similar amounts of BW and backfat, and their piglets grew faster (P < 0.05). Compared to G1, feed intake during lactation was higher for G3 sows (P < 0.05), and their risk of a prolonged weaning-to-estrus interval was lower (P < 0.01). Daily feed intake by sows was not affected by litter size in G1 and G3, but it was quadratically affected in G2 (P < 0.05), with a maximum at 10.8 piglets. Backfat loss of the sows increased linearly with litter size (P < 0.05) in G1 and G3. In G2, backfat loss increased only at litter sizes > 9.8 piglets (P < 0.01). Body weight loss of the sow and litter weight gain increased linearly with litter size (P < 0.001). Per extra piglet nursed, sows had a 23% (P < 0.01) higher probability of a prolonged weaning-to-estrus interval. A higher daily feed intake during lactation reduced tissue loss of the sow, increased litter weight gain (P < 0.01), and reduced the probability of a prolonged weaning-to-estrus interval (by 42% per extra kilogram; P < 0.01). Sows with a lower daily body weight loss during first lactation had a larger second litter (1.28 piglets/kg; P < 0.01), and their probability of a prolonged weaning-to-estrus interval was reduced by 61% per kilogram (P < 0.001). With increasing litter size, it is therefore recommended to reduce body weight loss during lactation by stimulating daily feed intake and by genetic selection.","is_dataset_classified":null,"base_score":5.1647859739235145,"endowment":5.1647859739235145,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"12661638","pmcid":null,"openalex_id":"https://openalex.org/W1961115732","authors":[],"funders":[],"total_grants":0,"fwci":4.1318,"citation_percentile":0.92268156,"influential_citations":0,"citation_trend":[{"year":2012,"count":13},{"year":2013,"count":5},{"year":2014,"count":13},{"year":2015,"count":7},{"year":2016,"count":9},{"year":2017,"count":8},{"year":2018,"count":11},{"year":2019,"count":12},{"year":2020,"count":8},{"year":2021,"count":7},{"year":2022,"count":12},{"year":2023,"count":8},{"year":2024,"count":8},{"year":2025,"count":5},{"year":2026,"count":6}],"oa_status":"green","license":"other-oa","oa_locations":[{"url":"https://research.wur.nl/en/publications/the-importance-of-high-feed-intake-during-lactation-of-primiparou","host_type":"journal"},{"url":"https://research.wur.nl/en/publications/the-importance-of-high-feed-intake-during-lactation-of-primiparou","host_type":"repository"},{"url":"http://academic.oup.com/jas/article-pdf/81/3/594/23250613/594.pdf","host_type":"publisher"},{"url":"https://doi.org/10.2527/2003.813594x","host_type":"journal"},{"url":"https://pubmed.ncbi.nlm.nih.gov/12661638","host_type":"repository"},{"url":"https://research.wur.nl/en/publications/the-importance-of-a-high-feed-intake-during-lactation-of-primipar","host_type":"repository"}],"fields_of_study":["Animal Behavior and Welfare Studies","Animal Nutrition and Physiology","Genetic and phenotypic traits in livestock","Adipose Tissue","Animals","Animals, Suckling","Body Constitution","Energy Intake","Estrus","Female","Genotype","Lactation","Litter Size","Parity","Random Allocation","Swine","Time Factors","Weaning","Weight Loss"],"mesh_terms":["Adipose Tissue","Animals","Animals, Suckling","Body Constitution","Energy Intake","Estrus","Female","Genotype","Lactation","Litter Size","Parity","Random Allocation","Swine","Time Factors","Weaning","Weight Loss"],"keywords":["Lactation","Litter","Weaning","Animal science","Estrous cycle","Biology","Pregnancy"],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-07-30T00:22:33.723033Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}