Zobrazeno 1 - 10
of 68
pro vyhledávání: '"T.R. Bilby"'
Autor:
A.C.C.H. Tomazi, T. Tomazi, L. Bringhenti, A.P.A. Vinhal, M.X. Rodrigues, T.R. Bilby, H.J. Huson, R.C. Bicalho
Publikováno v:
Journal of Dairy Science, Vol 106, Iss 4, Pp 2750-2771 (2023)
ABSTRACT: The aim of this study was to evaluate the effect of therapeutically administered tildipirosin or florfenicol + flunixin meglumine for the treatment of bovine respiratory disease (BRD) accompanied by fever in calves before weaning compared w
Externí odkaz:
https://doaj.org/article/746e6e0a2c7e433da48b53e5b2c262cf
Autor:
S.G. Umaña Sedó, C.C. Figueiredo, T.D. Gonzalez, G.A. Duarte, M.B. Ugarte Marin, C.A. Crawford, K.G. Pohler, R.C. Chebel, T.R. Bilby, R.S. Bisinotto
Publikováno v:
Journal of Dairy Science, Vol 105, Iss 6, Pp 5506-5518 (2022)
ABSTRACT: Objectives were to evaluate the effect of 2 analogs of PGF2α (cloprostenol vs. dinoprost) and 2 doses (1 injection vs. 2 injections) on luteolysis, follicle diameter, hormonal concentrations, and time to ovulation in dairy heifers. Holstei
Externí odkaz:
https://doaj.org/article/f41233079d9f4a9482b892631420f641
Publikováno v:
JDS Communications, Vol 2, Iss 1, Pp 35-40 (2021)
Our objective was to assess the effect of treatment with GnRH or 4 increasing doses of human chorionic gonadotropin (hCG) on the ovulatory response of a first-wave dominant follicle and subsequent plasma progesterone (P4) concentrations. Lactating Ho
Externí odkaz:
https://doaj.org/article/945191448bd54c859802e183420b5d69
Autor:
Ahmadreza Mirzaei, Scott T. Kieser, Barbara Petersen, Ricardo C. Chebel, T.R. Bilby, Elizabeth A. Cox
Publikováno v:
Applied Animal Science. 37:635-640
Objectives Our objective was to evaluate the effects of benzathine cloxacillin (BC) and ceftiofur hydrochloride (CH) treatment at dry-off on prevalence of intramammary infections at calving, incidence of clinical mastitis and SCC and milk yield up to
Autor:
T.R. Bilby, Mariana Pallu, Livia M. Duarte, Leonardo Bringhenti, A.C.C.H. Tomazi, Rodrigo C. Bicalho, Marjory Xavier Rodrigues, Tiago Tomazi, Josiane do Carmo Silva
Publikováno v:
Journal of Dairy Science. 104:6020-6038
The objectives of this study were to evaluate the effect of the metaphylactic use of a semi-synthetic long-acting macrolide (tildipirosin) on the prevention of pneumonia and otitis in preweaning Holstein calves, as well as its effects on the microbio
Publikováno v:
JDS Communications. 2:35-40
Our objective was to assess the effect of treatment with GnRH or 4 increasing doses of human chorionic gonadotropin (hCG) on the ovulatory response of a first-wave dominant follicle and subsequent plasma progesterone (P4) concentrations. Lactating Ho
Autor:
Anderson Veronese, Odinei Marques, Ky G Pohler, T.R. Bilby, Ricardo C. Chebel, Francisco Peñagaricano, Rafael Bisinotto
Publikováno v:
Journal of Dairy Science. 102:6639-6648
Fertility traits were recently added to the evaluation of genetic merit, allowing for the selection of Holstein cattle with improved reproductive performance. In the current study, we investigated the associations among genomic merit for daughter pre
Autor:
Anderson Veronese, Rafael Moreira, Odinei Marques, Anna Belli, Francisco Peñagaricano, Ricardo C. Chebel, T.R. Bilby, Rafael Bisinotto
Publikováno v:
Journal of Dairy Science. 102:6624-6638
Genetic selection of dairy cattle in the United States has included reproductive traits (daughter pregnancy rate, DPR; heifer conception rate, HCR), which is believed to have partly contributed to halting the decline in reproductive performance. The
Publikováno v:
Journal of Dairy Science. 102:6649-6659
Dinoprost tromethamine (DIN), a molecule similar to endogenous PGF2α, has a half-life of approximately 9 min. Cloprostenol sodium (CLO), a synthetic analog of PGF2α, has a half-life of approximately 3 h. We hypothesized that treatment of Holstein h
Autor:
J.P.N. Martins, Paul M. Fricke, T. Valdes-Arciniega, M.R. Lauber, E.M. Cabrera, M.S. El Azzi, T.R. Bilby
Publikováno v:
Journal of dairy science. 104(7)
Our objective was to compare the effect of treatment with GnRH at the first treatment (G1) of the Breeding-Ovsynch portion of a Double-Ovsynch (DO) protocol with human chorionic gonadotropin (hCG) on pregnancies per artificial insemination (P/AI) in