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|Research center of Embrapa/Collection:||Embrapa Gado de Leite - Artigo em periódico indexado (ALICE)|
|Type of Material:||Artigo em periódico indexado (ALICE)|
|Authors:||ARASHIRO, E. K. N.|
SANTOS, G. B. dos
NOGUEIRA, L. A. G.
SOUZA, G. N. de
BRANDÃO, F. Z.
|Additional Information:||Eduardo Kenji Nunes Arashiro, UFF; Hugo Libonati, UFF; Gustavo Bervian dos Santos, UFF; Luiz Altamiro Garcia Nogueira, UFF; GUILHERME NUNES DE SOUZA, CNPGL; Walter Lilenbaum, UFF; Felipe Zandonadi Brandão, UFF.|
|Title:||Repetition of estrus is the most frequent reproductive problem after breeding in dairy cattle from Rio de Janeiro, Brazil.|
|Publisher:||Ciência Rural, v. 47, n. 7, 2017.|
|Description:||Reproductive efficiency is one of the key elements for any milk production system to be successful. In this regard, reproductive management must be planned properly and the identification of the main reproductive disorders that affect the herd is primordial for decisionmaking. The aim of the present study was to identify the main reproductive problems that affect dairy herds on Rio de Janeiro (RJ), Brazil. Data regarding breed, age, reproductive disorder occurrence, and breeding system were individually collected from dairy cows raised at 25 farms located at RJ. The occurrence of reproductive disorders was reported in 37% of the studied animals. Estrous repetition (76.2%) and abortion (15.6%) were the most frequent reproductive problems reported. Estrous repetition was more common in older animals (>6 years old). However, an association between abortion and age of animal was not observed, nor an association between breeding system and occurrence of abortion. The present results demonstrated that estrous repetition is the main obstacle to the reproductive efficiency in dairy herds at RJ, and that the replace of older cows by heifers is an important point within reproductive management of a dairy herd.|
|NAL Thesaurus:||dairy cattle|
|Appears in Collections:||Artigo em periódico indexado (CNPGL)|
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