Results 71 to 80 of about 8,612 (230)

Amh Polymorphisms and their association with traits indicative of sexual precocity in nelore heifers

Semina: Ciências Agrárias, 2019
Anti-Müllerian Hormone (AMH) is a protein expressed in the gonads and related to ovarian follicular development. The aim of this study was to investigate the presence of polymorphisms in the AMH gene in a Nelore herd to analyze the genetic constitution ...
Julia Cestari Pierucci, Humberto Tonhati, Lúcia Galvão de Albuquerque, Diercles Francisco Cardoso, Daniel Jordan de Abreu dos Santos, Ana Cláudia Freitas, Marina Mortati Dias Barbero, Gregório Miguel Ferreira de Camargo, Camila Urbano Braz, Lindsay Unno Gimenes   +9 more
doaj   +1 more source

Evaluation of the true precocious puberty rats induced by neonatal administration of Danazol: Therapeutic effects of nourishing "Yin"- removing "Fire" Chinese herb mixture [PDF]

, 2005
Background Nourishing "Yin"-Removing "Fire" Chinese Herb Mixture, a traditional herb-based formulation, has been successfully used for the management of idiopathic true precocious puberty (IPP) for more than thirty years.
Chen Boying, Cai Depei, Sun Yan, Zhao Hong, Tian Zhanzhuang   +4 more
core   +2 more sources

Contribution of Fat Adjustment to Residual Feed Intake Estimation in Beef Cattle

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Including fat thickness as a covariate in the regression model used to calculate residual feed intake (RFI) could help preserve carcass quality traits, such as marbling, flavour and juiciness, by accounting for variation in fat deposition.
Larissa Bordin Temp, Letícia Pereira, Marcos Jun‐Iti Yokoo, Cintia Righetti Marcondes, Roberto D. Sainz, Fernando Bussiman, Jorge Hidalgo, Daniela Lourenco, Fernando Baldi   +8 more
wiley   +1 more source

Precocidade sexual em bovinos Nelore avaliada por ultrassonografia testicular

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2014
The present study aimed to evaluate if there are differences in testicular parenchyma echogenicity between pre-pubescent and pubescent animals at the same age. Ultrasound examinations were performed in longitudinal and transversal planes of the testicles
D.J. Cardilli, G.H. Toniollo, A.A. Pastore, J.C. Canola, J.A. Oliveira, M.E.Z. Mercadante   +5 more
doaj   +1 more source

Genetic Parameters and Genome‐Wide Association Studies for Fertility and Reproduction Traits in U.S. Katahdin Sheep Based on the Single‐Step GBLUP Methodology

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Sheep production contributes to a secure and diverse food and fibre supply in the United States, with growing ethnic diversity strengthening demand. Katahdin is a composite hair‐type sheep breed developed in the United States that has become the most popular breed in many regions of the country and the first one to have genomic selection ...
Alejandra Toro Ospina, Ronald M. Lewis, Bradley A. Freking, Joan M. Burke, Thomas W. Murphy, Carrie S. Wilson, Luiz F. Brito   +6 more
wiley   +1 more source

Parâmetros genéticos para idade ao primeiro parto estimados por diferentes modelos para rebanhos da raça Nelore Genetic parameters for age at first calving estimated by different models for Nellore breed herds

Ciência Rural, 2008
Com objetivo de estimar parâmetros genéticos e estudar a utilização de diferentes efeitos em avaliações genéticas para idade ao primeiro parto (IPP) por diferentes modelos, foram utilizados registros de IPP de animais da raça Nelore, nascidos entre os ...
Arione Augusti Boligon, Pedro Alejandro Vozzi, Jeferson Nomelini, Paulo Roberto Nogara Rorato, Luiz Antonio Framartino Bezerra, Raysildo Barbosa Lôbo   +5 more
doaj   +1 more source

Early developmental actions of endocrine disruptors on the hypothalamus, hippocampus, and cerebral cortex. [PDF]

, 2011
peer reviewedSex steroids and thyroid hormones play a key role in the development of the central nervous system. The critical role of these hormonal systems may explain the sensitivity of the hypothalamus, the cerebral cortex, and the hippocampus to ...
Bourguignon, Jean-Pierre, GERARD, Arlette, Naveau, Elise, Parent, Anne-Simone, Westbrook, Gary L   +4 more
core   +1 more source

Genetic Relationships Between Residual Gain and Economically Important Traits in Nellore Cattle

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Sustainable beef production requires identifying animals with superior feed efficiency to reduce environmental impact and production costs. This study aimed to estimate heritability and genetic correlations between residual gain (RG) and growth, reproductive, carcass and feed efficiency traits in Nellore cattle.
Miller Teodoro, Gabriel Gubiani, Letícia Pereira, Amanda Santos Gubiani, Angélica Simone Cravo Pereira, Roberto Sainz, Cláudio Ulhôa Magnabosco, Fernando Baldi   +7 more
wiley   +1 more source

Efeitos genéticos e ambientais sobre o perímetro escrotal de animais da raça Caracu Genetic and environment effects on scrotal circumference in Caracu cattle

Revista Brasileira de Zootecnia, 2007
Neste trabalho foram avaliados os efeitos de idade (IDS) e peso aos 15 meses (P15) sobre medidas de perímetro escrotal ao sobreano de 1.892 machos da raça Caracu e estimada a herdabilidade desta característica.
Maira Mattar, João Ademir de Oliveira, Sarah Laguna Meirelles, Sandra Aidar de Queiroz   +3 more
doaj   +1 more source

Do the biological characteristics of trout (Salmo trutta) smolts influence their spring migration timing and maiden marine sojourn duration?

Journal of Fish Biology, EarlyView.
Abstract Anadromous salmonids migrate seaward to exploit feeding and growth opportunities in marine habitats, yet how smolt biological characteristics influence their marine migratory behavior remains poorly understood. This study used 9 years of trout (Salmo trutta) population monitoring data from 15,595 tagged age‐0+ parr, 1033 smolts detected ...
Jonathan P. Gillson, Robert E. Blackwell, Stephen D. Gregory, Jessica E. Marsh, Tea Bašić, Sophie A. M. Elliott, R. Andrew King, David L. Maxwell, William D. Riley, Jamie R. Stevens, Alan M. Walker, Rasmus B. Lauridsen   +11 more
wiley   +1 more source