Results 31 to 40 of about 8,612 (230)

Anti-Müllerian hormone concentration and scrotal circumference as predictors of fertility-linked characteristics in male Brahman and Simmental bulls [PDF]

open access: yesRevista Brasileira de Zootecnia
This study investigates whether pre-pubertal scrotal circumference (SC) and anti-Müllerian hormone (AMH) concentrations indicate sexual precocity in Brahman and Simmental bulls. Fifty-three bulls (Brahman, n = 27; Simmental, n = 26) were used.
Renata Maculan   +7 more
doaj   +1 more source

Can scrotal circumference-based selection discard bulls with good productive and reproductive potential? [PDF]

open access: yesPLoS ONE, 2018
Nonlinear mixed models were used to describe longitudinal scrotal circumference (SC) measurements of Nellore bulls. Models comparisons were based on Akaike's information criterion, Bayesian information criterion, error sum of squares, adjusted R2 and ...
Jurandy Mauro Penitente-Filho   +13 more
doaj   +1 more source

Thyroxine-binding globulin: investigation of microheterogeneity [PDF]

open access: yes, 1981
Preparations of T4-binding globulin (TBG) from human serum was performed using only two affinity chromatography steps. Purity of the protein was demonstrated by a single band in overloaded disc and sodium dodecyl sulfate electrophoresis, equimolar ...
Gärtner, Roland   +4 more
core   +1 more source

Pelvic Ultrasound in Diagnosing and Evaluating the Efficacy of Gonadotropin-Releasing Hormone Agonist Therapy in Girls With Idiopathic Central Precocious Puberty

open access: yesFrontiers in Pharmacology, 2019
Background and Objective: Idiopathic central precocious puberty (ICPP) is characterized by early pubertal changes, the acceleration of growth velocity, and rapid bone maturation that often results in reduced adult height.
Hong-kui Yu   +5 more
doaj   +1 more source

Risky,early, controversial. Puberty in medical discourses [PDF]

open access: yes, 2015
This article comes within the compass of a research program (entitled CorAge. Bodily Experiences and AgePassages among 9e13 year-olds (ANR-09-ENFT-017) conducted between 2009 and 2013 about the emergence of a \u201cnew\u201d age in life ...
Cozzi, D, Vinel, V.
core   +1 more source

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

open access: yesAnimal, 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   +1 more source

Female sexual maturation and reproduction after prepubertal exposure to estrogens and endocrine disrupting chemicals: A review of rodent and human data [PDF]

open access: yes, 2006
Natural hormones and some synthetic chemicals spread into our surrounding environment share the capacity to interact with hormone action and metabolism.
Bourguignon, Jean-Pierre   +3 more
core   +1 more source

El papel de la institutriz en The Turn of the Screw [PDF]

open access: yes, 2010
For more than a hundred years, the role of the governess in The Turn of the Screw has been the centre of an enormous controversy among literary critics. In their approach to this work, critics have come up with a broad range of different interpretations,
Valiño Siota, Raúl
core   +2 more sources

Estimates of heritabilities and correlations for visual scores, weight and height at 550 days of age in Nelore cattle herds [PDF]

open access: yes, 2009
Os objetivos neste trabalho foram avaliar as relações entre os escores visuais de estrutura corporal, precocidade e musculosidade ao sobreano (aproximadamente 550 dias de idade) com características de crescimento para verificar as possibilidades de ...
ALBUQUERQUE, Lucia Galvão de   +5 more
core   +4 more sources

Optimization and verification of high‐fat diet formulation for establishing a rat model of obesity‐related precocious puberty

open access: yesAnimal Models and Experimental Medicine, EarlyView.
We identified 45% HFD as the optimal formulation to establish a juvenile rat model of obesity‐related precocious puberty. It elicits robust phenotypic (early vaginal opening, obesity), histological (advanced ovarian development), and endocrine (elevated HPG axis hormones) alterations, with leptin‐mediated GnRH secretion as a core mechanistic driver ...
Jiayi Gong   +5 more
wiley   +1 more source

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