Reproductive performance as affected by lactation status and body fat in beef cows.

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dc.contributorCLOVIS GUIMARAES FILHO, CPATSA
dc.contributorDONALO E. RAY, UNIVERSITY OF ARIZONA.
dc.creatorGUIMARÃES FILHO, C.
dc.creatorRAY, D. E.
dc.date2016-06-07T09:05:57Z
dc.date2016-06-07T09:05:57Z
dc.date1996-07-04
dc.date1985
dc.date2016-06-07T09:05:57Z
dc.date.accessioned2026-07-07T05:46:03Z
dc.descriptionSeventy-one mature Brangus cows, 38 nonlactating (NL) and 33 in late stage of lactation (L) were fed for 192 days (Phase I) a low energy diet (L). During Phase II (65 days) 19 NL and 17 L cows were fed a high energy diet (H). The other nonlactating (19) and lactating (16) cows remained on the low energy diet. Energy restriction during Phase I did not affect (P> 0.05) cyclic ovarian activity although losses in body weight and condition were substantial. Rapid changes in body weight, condition, and percent empty body lipe (EBLP) during Phase II did not substantially influencefertility, although a five-fold difference in EBLP was observed (NL0H vs. L-L). Treatment groups did not differ (P> 0.05) in conception rate, days from the beginning of the breeding season to breeding and to conception, conception at first service, and number of services per conception. Values observed for these parameters for NL-H, L-H, NL-L, and L-L groups were respectively: 68,4%, `3,.2, 23.3, 36.8% and 1.68; 82,4% 12.7, 19.5, 58.8% and 1.29; 68.4%, 10.2, 17.4, 47.4%, and 1.41; 68.8%, 12.4, 19.5, 43.7%, and 1.50.
dc.identifierPesquisa Agropecuária Brasileira, v. 20, n. 6, p. 699-705, jun. 1985.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/132198
dc.identifier.urihttp://hdl.handle.net/123456789/499504
dc.languageeng
dc.rightsopenAccess
dc.subjectConcepcao
dc.subjectAmamentacao
dc.subjectBeff cows
dc.subjectBody lipid
dc.subjectBovino
dc.subjectLactação
dc.subjectProdução Animal
dc.subjectLipídio
dc.subjectReprodução
dc.subjectanimal production
dc.subjectconception
dc.subjectlactation
dc.subjectreproduction
dc.subjectsuckling
dc.titleReproductive performance as affected by lactation status and body fat in beef cows.
dc.typeArtigo de periódico

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