{"id":"https://openalex.org/W2036622350","doi":"https://doi.org/10.1530/jrf.0.0070289","title":"STUDIES ON THE PLACENTA OF THE SHEEP ( OVIS ARIES L.)","display_name":"STUDIES ON THE PLACENTA OF THE SHEEP ( OVIS ARIES L.)","publication_year":1964,"publication_date":"1964-06-01","ids":{"openalex":"https://openalex.org/W2036622350","doi":"https://doi.org/10.1530/jrf.0.0070289","mag":"2036622350","pmid":"https://pubmed.ncbi.nlm.nih.gov/14180723"},"language":"en","primary_location":{"id":"doi:10.1530/jrf.0.0070289","doi":"https://doi.org/10.1530/jrf.0.0070289","is_oa":false,"landing_page_url":"https://doi.org/10.1530/jrf.0.0070289","pdf_url":null,"source":{"id":"https://openalex.org/S28473761","display_name":"Reproduction","issn_l":"1470-1626","issn":["1470-1626","1741-7899"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","doyens","jufo-1","ki-jl-1","medline","norway-1","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310319937","host_organization_name":"Bioscientifica","host_organization_lineage":["https://openalex.org/P4310319937"],"host_organization_lineage_names":["Bioscientifica"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Reproduction","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref","pubmed"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5103039835","display_name":"Gerianne M. Alexander","orcid":"https://orcid.org/0000-0002-0072-1874","observed_orcids":["https://orcid.org/0000-0002-0072-1874"]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"G. ALEXANDER","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5103039835"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":152,"citation_normalized_percentile":{"value":0.15658062,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"7","issue":"3","first_page":"289","last_page":"305"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10584","display_name":"Reproductive Physiology in Livestock","score":0.9926999807357788,"subfield":{"id":"https://openalex.org/subfields/1102","display_name":"Agronomy and Crop Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T10584","display_name":"Reproductive Physiology in Livestock","score":0.9926999807357788,"subfield":{"id":"https://openalex.org/subfields/1102","display_name":"Agronomy and Crop Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10290","display_name":"Pregnancy and preeclampsia studies","score":0.0032999999821186066,"subfield":{"id":"https://openalex.org/subfields/2729","display_name":"Obstetrics and Gynecology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11629","display_name":"Birth, Development, and Health","score":0.0017999999690800905,"subfield":{"id":"https://openalex.org/subfields/2735","display_name":"Pediatrics, Perinatology and Child Health"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/sheep-placenta","display_name":"sheep placenta","score":0.8740000128746033},{"id":"https://openalex.org/keywords/cotyledons","display_name":"cotyledons","score":0.7409999966621399},{"id":"https://openalex.org/keywords/fetal-weight","display_name":"fetal weight","score":0.878000020980835},{"id":"https://openalex.org/keywords/birth-weight","display_name":"birth weight","score":0.9789999723434448},{"id":"https://openalex.org/keywords/cotyledon-number","display_name":"cotyledon number","score":0.6330000162124634},{"id":"https://openalex.org/keywords/parity","display_name":"parity","score":0.3240000009536743},{"id":"https://openalex.org/keywords/litter-size","display_name":"litter size","score":0.949999988079071},{"id":"https://openalex.org/keywords/sex-differences","display_name":"sex differences","score":0.4000000059604645},{"id":"https://openalex.org/keywords/australian-merino","display_name":"Australian Merino","score":0.6959999799728394},{"id":"https://openalex.org/keywords/caruncle","display_name":"caruncle","score":0.7540000081062317},{"id":"https://openalex.org/keywords/placental-weight","display_name":"placental weight","score":0.4009999930858612},{"id":"https://openalex.org/keywords/fetal-growth","display_name":"fetal growth","score":0.3540000021457672}],"concepts":[{"id":"https://openalex.org/C185476388","wikidata":"https://www.wikidata.org/wiki/Q193026","display_name":"Cotyledon","level":2,"score":0.8803960084915161},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.6955775618553162},{"id":"https://openalex.org/C2776482104","wikidata":"https://www.wikidata.org/wiki/Q38829","display_name":"Breed","level":2,"score":0.6899738907814026},{"id":"https://openalex.org/C2776953305","wikidata":"https://www.wikidata.org/wiki/Q1212935","display_name":"Placenta","level":4,"score":0.6669557690620422},{"id":"https://openalex.org/C2779429622","wikidata":"https://www.wikidata.org/wiki/Q1780867","display_name":"Litter","level":2,"score":0.6498687863349915},{"id":"https://openalex.org/C66322754","wikidata":"https://www.wikidata.org/wiki/Q4128476","display_name":"Birth weight","level":3,"score":0.5808368921279907},{"id":"https://openalex.org/C140793950","wikidata":"https://www.wikidata.org/wiki/Q168091","display_name":"Animal science","level":1,"score":0.542060136795044},{"id":"https://openalex.org/C2777963300","wikidata":"https://www.wikidata.org/wiki/Q22724","display_name":"Ovis","level":2,"score":0.5418459177017212},{"id":"https://openalex.org/C172680121","wikidata":"https://www.wikidata.org/wiki/Q26513","display_name":"Fetus","level":3,"score":0.5327857732772827},{"id":"https://openalex.org/C2779349900","wikidata":"https://www.wikidata.org/wiki/Q1096614","display_name":"Amniotic sac","level":5,"score":0.46278077363967896},{"id":"https://openalex.org/C2779066055","wikidata":"https://www.wikidata.org/wiki/Q9612","display_name":"Uterus","level":2,"score":0.44239675998687744},{"id":"https://openalex.org/C2986115478","wikidata":"https://www.wikidata.org/wiki/Q186290","display_name":"Positive correlation","level":2,"score":0.4397945702075958},{"id":"https://openalex.org/C2777151079","wikidata":"https://www.wikidata.org/wiki/Q141160","display_name":"Parity (physics)","level":2,"score":0.43760496377944946},{"id":"https://openalex.org/C2779234561","wikidata":"https://www.wikidata.org/wiki/Q11995","display_name":"Pregnancy","level":2,"score":0.3954159617424011},{"id":"https://openalex.org/C16685009","wikidata":"https://www.wikidata.org/wiki/Q335057","display_name":"Andrology","level":1,"score":0.3401539921760559},{"id":"https://openalex.org/C59822182","wikidata":"https://www.wikidata.org/wiki/Q441","display_name":"Botany","level":1,"score":0.22066569328308105},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.20479223132133484},{"id":"https://openalex.org/C134018914","wikidata":"https://www.wikidata.org/wiki/Q162606","display_name":"Endocrinology","level":1,"score":0.2037714123725891},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.15123251080513},{"id":"https://openalex.org/C2778194526","wikidata":"https://www.wikidata.org/wiki/Q901674","display_name":"Amniotic fluid","level":4,"score":0.13686224818229675},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.12375721335411072},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.1137898862361908},{"id":"https://openalex.org/C109214941","wikidata":"https://www.wikidata.org/wiki/Q18334","display_name":"Particle physics","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C54355233","wikidata":"https://www.wikidata.org/wiki/Q7162","display_name":"Genetics","level":1,"score":0.0}],"mesh":[{"descriptor_ui":"D000375","descriptor_name":"Aging","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D000818","descriptor_name":"Animals","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000831","descriptor_name":"Animals, Newborn","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D001724","descriptor_name":"Birth Weight","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D001835","descriptor_name":"Body Weight","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005333","descriptor_name":"Fetus","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D007231","descriptor_name":"Infant, Newborn","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D009747","descriptor_name":"Nutritional Physiological Phenomena","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D010920","descriptor_name":"Placenta","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D011247","descriptor_name":"Pregnancy","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D011270","descriptor_name":"Pregnancy, Animal","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D012106","descriptor_name":"Research","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D012756","descriptor_name":"Sheep","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D014427","descriptor_name":"Twins","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D034561","descriptor_name":"Sheep, Domestic","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D052756","descriptor_name":"Nutritional Sciences","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true}],"locations_count":2,"locations":[{"id":"doi:10.1530/jrf.0.0070289","doi":"https://doi.org/10.1530/jrf.0.0070289","is_oa":false,"landing_page_url":"https://doi.org/10.1530/jrf.0.0070289","pdf_url":null,"source":{"id":"https://openalex.org/S28473761","display_name":"Reproduction","issn_l":"1470-1626","issn":["1470-1626","1741-7899"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","doyens","jufo-1","ki-jl-1","medline","norway-1","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310319937","host_organization_name":"Bioscientifica","host_organization_lineage":["https://openalex.org/P4310319937"],"host_organization_lineage_names":["Bioscientifica"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Reproduction","raw_type":"journal-article"},{"id":"pmid:14180723","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/14180723","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of reproduction and fertility","raw_type":"Journal Article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/2","display_name":"Zero hunger","score":0.6875}],"sustainable_development_goals_aurora":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":15,"referenced_works":["https://openalex.org/W659429932","https://openalex.org/W1519728959","https://openalex.org/W1644861604","https://openalex.org/W1965171244","https://openalex.org/W1995985110","https://openalex.org/W1997466606","https://openalex.org/W2001537864","https://openalex.org/W2021354984","https://openalex.org/W2059432771","https://openalex.org/W2089020736","https://openalex.org/W2107092235","https://openalex.org/W2113324045","https://openalex.org/W2133198986","https://openalex.org/W2138180048","https://openalex.org/W2227803395"],"related_works":["https://openalex.org/W2108150471","https://openalex.org/W3005193003","https://openalex.org/W1991904741","https://openalex.org/W2014484993","https://openalex.org/W588021998","https://openalex.org/W1023894609","https://openalex.org/W2027442717","https://openalex.org/W2015847026","https://openalex.org/W434518624","https://openalex.org/W3035289067"],"abstract_inverted_index":{"Summary.":[0],"A":[1],"positive":[2],"correlation":[3,112],"is":[4,50,109,180],"reported":[5],"between":[6,69,113],"birth":[7],"weight":[8,11,56,71,74,84,115,127],"and":[9,15,35,72,116,141,153,167,171,199],"the":[10,54,126,172,177,189,217],"of":[12,16,37,46,57,64,96,118,121,128,146,155,162,165,174,188,224],"intact":[13],"cotyledons":[14,58,130,147,206],"foetal":[17,70,83,114,140],"cotyledons.":[18,197],"At":[19],"equal":[20],"cotyledon":[21,73,92,106],"weight,":[22],"single":[23],"foetuses":[24,30],"are":[25,31,101,133,214],"heavier":[26,32,43],"than":[27,33,44,207],"twins,":[28],"male":[29],"females":[34],"those":[36,45],"older":[38],"ewes":[39],"tend":[40],"to":[41,76,192,194],"be":[42,77],"younger":[47],"ones.":[48],"There":[49,108,179],"great":[51],"variability":[52],"in":[53,82,91,125,135,176,220],"total":[55],"per":[59,148],"ewe,":[60,163],"even":[61],"within":[62],"groups":[63],"similar":[65],"ewes.":[66],"The":[67,144],"relationship":[68],"appears":[75],"curvilinear":[78],"near":[79],"parturition,":[80],"increases":[81],"being":[85],"associated":[86],"with":[87,151,168,228],"increasingly":[88],"large":[89],"increments":[90],"weight.":[93,107],"Foetal":[94],"weights":[95],"about":[97],"1":[98],"\u00b75":[99],"kg":[100],"achieved":[102],"at":[103],"very":[104,225,229],"low":[105],"only":[110],"slight":[111],"number":[117,145,173,223],"cotyledons,":[119],"because":[120],"a":[122,181,185,222],"compensatory":[123],"increase":[124],"individual":[129],"when":[131],"they":[132],"few":[134],"number.":[136],"This":[137],"involves":[138],"both":[139],"maternal":[142],"tissue.":[143],"foetus":[149],"varies":[150],"breed":[152,210],"strain":[154],"sheep,":[156,218],"litter":[157],"size,":[158],"age":[159],"(or":[160],"parity)":[161],"sex":[164],"lamb":[166],"environmental":[169],"conditions":[170],"caruncles":[175,190],"uterus.":[178],"marked":[182],"tendency":[183],"for":[184,211],"constant":[186],"proportion":[187],"(70":[191],"80%)":[193],"develop":[195],"into":[196],"Fine":[198],"medium":[200],"wooled":[201],"Australian":[202],"Merinos":[203],"have":[204],"fewer":[205],"any":[208],"other":[209],"which":[212],"data":[213],"available.":[215],"In":[216],"as":[219],"man,":[221],"small":[226,230],"foetuses,":[227],"placentae,":[231],"reach":[232],"full":[233],"term.":[234]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":7},{"year":2020,"cited_by_count":3},{"year":2018,"cited_by_count":5},{"year":2017,"cited_by_count":3},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":6},{"year":2014,"cited_by_count":7},{"year":2013,"cited_by_count":3},{"year":2012,"cited_by_count":1}],"updated_date":"2026-10-31T12:09:11.096373","created_date":"2016-06-24T00:00:00"}
