{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/19438"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/19438","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Inheritance and incidence of atresia coli in Holstein cattle","abstract":"Incidence of atresia coli was monitored from 1974 through 1989 in the University of Illinois Holstein herd. This period comprised three phases. Phase I was the period from January, 1974 through August, 1983. The period from September, 1983 through March, 1986 was designated as phase II. The third phase was from April, 1986 through December, 1989. Frequency of atresia coli during phase I was.76%. A mating plan was implemented during phase II. Results revealed that atresia coli is inherited as homozygous recessive in Holstein cattle. Frequency of the abnormality of.36% during phase III was less than the frequency observed during phase I, which could be attributed to the smaller proportion of putative carriers among the selected bulls during phase III. Both phase I and phase III were periods of random matings with respect to atresia coli. More (P $<$.05) atresia coli calves were born from dams in which pregnancy was diagnosed early (before 41st day of gestation) than from dams in which pregnancy was diagnosed late (after 40th day of gestation). Results of planned matings conducted during 1990 (phase IV) were also consistent with the genetic hypothesis that atresia coli is controlled by a recessive gene in homozygous state. Six ancestors of the affected calves born in the University of Illinois Holstein herd occurred in pedigrees of atresia coli calves born in other Holstein herds in Illinois. A progenitor of atresia coli calves born in the University of Illinois Holstein herd was also present in pedigrees of several affected calves born in the Holstein herd of North Carolina State University. More (P $<$.01) calves were born dead or aborted among the affected calves than such cases among normal calves. Average frequency of the defective allele for atresia coli among females in the University of Illinois Holstein herd was.11 for the years 1979 through 1989. Minimum frequency of the defective allele among registered US Holstein females for the years 1978 through 1989 averaged.025. In conclusion, atresia coli is inherited in Holstein cattle. Early pregnancy diagnosis in dams may contribute to atresia coli in genetically predisposed calves.","abstract_html":"Incidence of atresia coli was monitored from 1974 through 1989 in the University of Illinois Holstein herd. This period comprised three phases. Phase I was the period from January, 1974 through August, 1983. The period from September, 1983 through March, 1986 was designated as phase II. The third phase was from April, 1986 through December, 1989. Frequency of atresia coli during phase I was.76%. A mating plan was implemented during phase II. Results revealed that atresia coli is inherited as homozygous recessive in Holstein cattle. Frequency of the abnormality of.36% during phase III was less than the frequency observed during phase I, which could be attributed to the smaller proportion of putative carriers among the selected bulls during phase III. Both phase I and phase III were periods of random matings with respect to atresia coli. More (P $&lt;$.05) atresia coli calves were born from dams in which pregnancy was diagnosed early (before 41st day of gestation) than from dams in which pregnancy was diagnosed late (after 40th day of gestation). Results of planned matings conducted during 1990 (phase IV) were also consistent with the genetic hypothesis that atresia coli is controlled by a recessive gene in homozygous state. Six ancestors of the affected calves born in the University of Illinois Holstein herd occurred in pedigrees of atresia coli calves born in other Holstein herds in Illinois. A progenitor of atresia coli calves born in the University of Illinois Holstein herd was also present in pedigrees of several affected calves born in the Holstein herd of North Carolina State University. More (P $&lt;$.01) calves were born dead or aborted among the affected calves than such cases among normal calves. Average frequency of the defective allele for atresia coli among females in the University of Illinois Holstein herd was.11 for the years 1979 through 1989. Minimum frequency of the defective allele among registered US Holstein females for the years 1978 through 1989 averaged.025. In conclusion, atresia coli is inherited in Holstein cattle. Early pregnancy diagnosis in dams may contribute to atresia coli in genetically predisposed calves.","abstract_has_math":true,"creators":["Syed, Mirajuddin"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Animal Sciences","degree_department":null,"school":null,"contributors":["Shanks, Roger D."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T12:07:33Z","date_published":"2011-05-07T12:07:33Z","updated_at":"2026-07-22T22:25:14Z","subjects":["Agriculture, Animal Culture and Nutrition","Agriculture, Animal Pathology","Biology, Veterinary Science"],"languages":["eng"],"rights":["Copyright 1991 Syed, Mirajuddin"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9136749","(UMI)AAI9136749"],"render_values":[{"text":"AAI9136749","href":null,"code":true},{"text":"(UMI)AAI9136749","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/19438","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Shanks, Roger D."]},{"key":"dc:creator","label":"Author","values":["Syed, Mirajuddin"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T12:07:33Z","10000-01-01","1991"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Animal Sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Agriculture, Animal Culture and Nutrition","Agriculture, Animal Pathology","Biology, Veterinary Science"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 1991 Syed, Mirajuddin"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9136749","(UMI)AAI9136749","http://hdl.handle.net/2142/19438"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Incidence of atresia coli was monitored from 1974 through 1989 in the University of Illinois Holstein herd. This period comprised three phases. Phase I was the period from January, 1974 through August, 1983. The period from September, 1983 through March, 1986 was designated as phase II. The third phase was from April, 1986 through December, 1989. Frequency of atresia coli during phase I was.76%. A mating plan was implemented during phase II. Results revealed that atresia coli is inherited as homozygous recessive in Holstein cattle. Frequency of the abnormality of.36% during phase III was less than the frequency observed during phase I, which could be attributed to the smaller proportion of putative carriers among the selected bulls during phase III. Both phase I and phase III were periods of random matings with respect to atresia coli. More (P $<$.05) atresia coli calves were born from dams in which pregnancy was diagnosed early (before 41st day of gestation) than from dams in which pregnancy was diagnosed late (after 40th day of gestation). Results of planned matings conducted during 1990 (phase IV) were also consistent with the genetic hypothesis that atresia coli is controlled by a recessive gene in homozygous state. Six ancestors of the affected calves born in the University of Illinois Holstein herd occurred in pedigrees of atresia coli calves born in other Holstein herds in Illinois. A progenitor of atresia coli calves born in the University of Illinois Holstein herd was also present in pedigrees of several affected calves born in the Holstein herd of North Carolina State University. More (P $<$.01) calves were born dead or aborted among the affected calves than such cases among normal calves. Average frequency of the defective allele for atresia coli among females in the University of Illinois Holstein herd was.11 for the years 1979 through 1989. Minimum frequency of the defective allele among registered US Holstein females for the years 1978 through 1989 averaged.025. In conclusion, atresia coli is inherited in Holstein cattle. Early pregnancy diagnosis in dams may contribute to atresia coli in genetically predisposed calves.","Made available in DSpace on 2011-05-07T12:07:33Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9136749.pdf: 7809796 bytes, checksum: 2ff6027947cd02ec16148940458c94aa (MD5) Previous issue date: 1991","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:36:57Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:15:06-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"]},{"key":"dc:title","label":"Title","values":["Inheritance and incidence of atresia coli in Holstein cattle"]}]}],"canonical_facts":{"dc:contributor":["Shanks, Roger D."],"dc:creator":["Syed, Mirajuddin"],"dc:date":["2011-05-07T12:07:33Z","10000-01-01","1991"],"dc:description":["Incidence of atresia coli was monitored from 1974 through 1989 in the University of Illinois Holstein herd. This period comprised three phases. Phase I was the period from January, 1974 through August, 1983. The period from September, 1983 through March, 1986 was designated as phase II. The third phase was from April, 1986 through December, 1989. Frequency of atresia coli during phase I was.76%. A mating plan was implemented during phase II. Results revealed that atresia coli is inherited as homozygous recessive in Holstein cattle. Frequency of the abnormality of.36% during phase III was less than the frequency observed during phase I, which could be attributed to the smaller proportion of putative carriers among the selected bulls during phase III. Both phase I and phase III were periods of random matings with respect to atresia coli. More (P $<$.05) atresia coli calves were born from dams in which pregnancy was diagnosed early (before 41st day of gestation) than from dams in which pregnancy was diagnosed late (after 40th day of gestation). Results of planned matings conducted during 1990 (phase IV) were also consistent with the genetic hypothesis that atresia coli is controlled by a recessive gene in homozygous state. Six ancestors of the affected calves born in the University of Illinois Holstein herd occurred in pedigrees of atresia coli calves born in other Holstein herds in Illinois. A progenitor of atresia coli calves born in the University of Illinois Holstein herd was also present in pedigrees of several affected calves born in the Holstein herd of North Carolina State University. More (P $<$.01) calves were born dead or aborted among the affected calves than such cases among normal calves. Average frequency of the defective allele for atresia coli among females in the University of Illinois Holstein herd was.11 for the years 1979 through 1989. Minimum frequency of the defective allele among registered US Holstein females for the years 1978 through 1989 averaged.025. In conclusion, atresia coli is inherited in Holstein cattle. Early pregnancy diagnosis in dams may contribute to atresia coli in genetically predisposed calves.","Made available in DSpace on 2011-05-07T12:07:33Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9136749.pdf: 7809796 bytes, checksum: 2ff6027947cd02ec16148940458c94aa (MD5) Previous issue date: 1991","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:36:57Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:15:06-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"],"dc:identifier":["AAI9136749","(UMI)AAI9136749","http://hdl.handle.net/2142/19438"],"dc:language":["eng"],"dc:rights":["Copyright 1991 Syed, Mirajuddin"],"dc:subject":["Agriculture, Animal Culture and Nutrition","Agriculture, Animal Pathology","Biology, Veterinary Science"],"dc:title":["Inheritance and incidence of atresia coli in Holstein cattle"],"dc:type":["text"],"thesis:degree_discipline":["Animal Sciences"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:14Z"}