Results 11 to 20 of about 8,925 (264)

Pelvic ultrasound and pubertal attainment in girls with sexual precocity: the pivotal role of uterine volume in predicting the timing of menarche [PDF]

open access: yesFrontiers in Endocrinology
IntroductionAmong girls assessed for pubertal precocity, pelvic ultrasound (pUS) may represent a pivotal tool to predict the time expected to elapse between sonographic assessment and the onset of menarche (TUS-M).
Alessandro Cattoni   +27 more
doaj   +2 more sources

Hypothalamic Hamartoma and Sexual Precocity

open access: hybridPediatric Neurology Briefs, 1990
Four boys with hypothalamic hamartomas associated with sexual precocity are reported from the Departments of Pediatrics and Neurosurgery, University of Pittsburgh, and the Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore ...
J Gordon Millichap
doaj   +3 more sources

Comparison among three approaches for evaluation of sexual precocity in Nellore cattle

open access: hybridAnimal, 2007
Restricted breeding seasons used in beef cattle produce censored data for reproduction traits measured in regard to these seasons. To analyze these data, adequate methods must be used. The objective of this paper was to compare three approaches aiming to
E. Pereira   +4 more
doaj   +2 more sources

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

open access: goldSemina: 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   +9 more
doaj   +3 more sources

SEXUAL PRECOCITY ASSOCIATED WITH THE CONCENTRATION OF PLASMA PROGESTERONE IN NELORE HEIFERS RAISED IN NORTHERN BRAZIL

open access: diamondCiência Agrícola, 2020
The objective of this study was to identify sexually precocious heifers by observing ovulation (presence of corpus luteum - CL) and correlating it with the plasma progesterone concentration, as well as to verify the accuracy of the ultrasound examination
Daniel Ribeiro Guimarães de Menezes   +2 more
doaj   +3 more sources

Phenotypic relationship of female sexual precocity with production and reproduction traits in beef cattle using multivariate statistical techniques [PDF]

open access: goldItalian Journal of Animal Science, 2019
Multivariate statistical techniques were used to characterise the differences between precocious and non-precocious Nellore females regarding the phenotypic expression of various reproductive and productive traits.
Gerardo Alves Fernandes Júnior   +3 more
doaj   +2 more sources

Genetic and environmental effects on sexual precocity traits in Nellore cattle Efeitos genéticos e ambientais sobre características de precocidade sexual em bovinos Nelore [PDF]

open access: goldRevista Brasileira de Zootecnia, 2009
The objective of this study was to estimate the heritability of probability of early pregnancy (PEP) and scrotal circumference (SC) and the genetic correlation between these traits in Nellore cattle.
Sarah Laguna Meirelles   +3 more
doaj   +2 more sources

Surveillance and Genomic Evolution of Infectious Precocity Virus (IPV) from 2011 to 2024 [PDF]

open access: yesViruses
Infectious precocity virus (IPV) poses a significant economic threat to the aquaculture industry by causing sexual precocity and slow growth in Macrobrachium rosenbergii. In this study, we conducted an in-depth investigation into the genetic evolution of
Chengyan Zhou   +6 more
doaj   +2 more sources

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