{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,14]],"date-time":"2026-04-14T22:26:59Z","timestamp":1776205619457,"version":"3.50.1"},"reference-count":15,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2006,11,15]],"date-time":"2006-11-15T00:00:00Z","timestamp":1163548800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Reprod Domestic Animals"],"published-print":{"date-parts":[[2006,12]]},"abstract":"<jats:title>Contents<\/jats:title><jats:p>The objectives of the study were to evaluate the oestrus behaviour and to determine the timing of ovulation in relation to onset of oestrus and the pre\u2010ovulatory LH surge in mithun (<jats:italic>Bos frontalis<\/jats:italic>). For this purpose, the blood samples collected at 15\u2010min intervals for 9\u2003h period following onset of oestrus and thereafter, at an interval of 2\u2003h till 4\u2003h post\u2010ovulation for three consecutive cycles from 12 mithun cows were assayed for plasma LH and progesterone. Ovulation was confirmed by palpation of ovaries per rectum at hourly intervals. Various signs of behavioural oestrus were also recorded. The common signs of oestrus and their frequency of occurrence in mithuns were following and mounting by male mithuns (100%), standing to be mounted (100%), frequent urination (62.33%), raising of tail (65.23%), swelling of vulva (54.26%) and congestion of vulvar mucous membrane (69.87%). The pre\u2010ovulatory LH surges consisted of several pulses (2.92\u2003\u00b1\u20030.26\u2003pulses\/animal; range, 1\u20134). The mean (\u00b1SEM) peak level of LH for individual mithun varied from 6.99\u2003\u00b1\u20030.44 to 12.69\u2003\u00b1\u20032.10\u2003ng\/ml and the mean pooled LH peak concentration was 9.10\u2003\u00b1\u20030.60\u2003ng\/ml. The highest peak (highest amplitude of LH during LH surge) was 10.83\u2003\u00b1\u20030.76\u2003ng\/ml (range, 8.07\u201316.49\u2003ng\/ml). The duration of LH surge was 6.98\u2003\u00b1\u20030.22\u2003h (6\u20138\u2003h). Onset of LH surge was at 1.23\u2003\u00b1\u20030.17\u2003h post\u2010oestrus onset (range, 0.25\u20132.25\u2003h). Mean plasma progesterone stayed low (&lt;0.24\u2003ng\/ml) during the entire duration of sampling. Ovulation occurred at 26.92\u2003\u00b1\u20030.31 (range, 26\u201329\u2003h) after the onset of oestrus and 18.63\u2003\u00b1\u20030.35\u2003h (range, 17\u201320.75\u2003h) after the end of LH surge. The occurrence of the highest LH peaks within a narrow time frame of 2\u2010 to 5\u2010h post\u2010oestrus onset in mithuns could have contributed to the animals ovulating within a narrow time interval. These results are very promising from a practical standpoint of potential success when AI program in this species is implemented in a big way. Furthermore, the results of the occurrence of LH pulses during pre\u2010ovulatory LH surges, which are required for ovulation in this species of animals, is unique and species specific.<\/jats:p>","DOI":"10.1111\/j.1439-0531.2006.00678.x","type":"journal-article","created":{"date-parts":[[2006,11,16]],"date-time":"2006-11-16T01:35:15Z","timestamp":1163640915000},"page":"479-484","source":"Crossref","is-referenced-by-count":5,"title":["Oestrous Behaviour and Timing of Ovulation in Relation to Onset of Oestrus and LH Peak in Mithun (<i>Bos frontalis<\/i>) Cows"],"prefix":"10.1111","volume":"41","author":[{"given":"M","family":"Mondal","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C","family":"Rajkhowa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"BS","family":"Prakash","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2006,11,15]]},"reference":[{"key":"e_1_2_6_2_1","first-page":"193","article-title":"Der Kouprey, Bos (Bibos) sauveli Urbain 1937","volume":"26","author":"Bohlken H","year":"1961","journal-title":"Zutschrift fur Saugetierkunde"},{"key":"e_1_2_6_3_1","first-page":"59","article-title":"Milk production potentiality of mithun (Bos frontalis)","volume":"54","author":"Bujarbaruah KM","year":"2002","journal-title":"Ind Dairyman"},{"key":"e_1_2_6_4_1","first-page":"725","volume-title":"The Physiology of Reproduction","author":"Espey LL","year":"1994"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1095\/biolreprod33.2.316"},{"key":"e_1_2_6_6_1","volume-title":"Mithun \u2013 A Bovine of Indian Origin","author":"Gupta SC","year":"1999"},{"key":"e_1_2_6_7_1","volume-title":"Reproduction in Farm Animals","author":"Hafez ESE","year":"1987"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.S0022-0302(03)73790-4"},{"key":"e_1_2_6_9_1","first-page":"245","article-title":"Mithun: historical perspective","volume":"3","author":"Mondal SK","year":"1999","journal-title":"Asian Agric Hist"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1081\/IAS-200052003"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1080\/15321810500220811"},{"key":"e_1_2_6_12_1","unstructured":"PaulV 2003:Studies on estrus synchronization methods timing of ovulation and endocrine profile in buffaloes.PhD thesis National Dairy Research Institute Karnal Haryana India."},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0093-691X(98)00017-X"},{"key":"e_1_2_6_14_1","first-page":"251","article-title":"Production and characterization of a sensitive antiserum against progesterone","volume":"71","author":"Prakash BS","year":"2001","journal-title":"Indian J Anim Sci"},{"key":"e_1_2_6_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.anireprosci.2004.08.005"},{"key":"e_1_2_6_16_1","first-page":"34","volume-title":"Evolution of Domesticated Animals","author":"Simoons FJ","year":"1984"}],"container-title":["Reproduction in Domestic Animals"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1111%2Fj.1439-0531.2006.00678.x","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/j.1439-0531.2006.00678.x","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,10]],"date-time":"2023-10-10T06:29:22Z","timestamp":1696919362000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/j.1439-0531.2006.00678.x"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2006,11,15]]},"references-count":15,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2006,12]]}},"alternative-id":["10.1111\/j.1439-0531.2006.00678.x"],"URL":"https:\/\/doi.org\/10.1111\/j.1439-0531.2006.00678.x","archive":["Portico"],"relation":{},"ISSN":["0936-6768","1439-0531"],"issn-type":[{"value":"0936-6768","type":"print"},{"value":"1439-0531","type":"electronic"}],"subject":[],"published":{"date-parts":[[2006,11,15]]}}}