Results 31 to 40 of about 4,216 (216)

Short communication: Genetic parameters for post-weaning visual scores and reproductive traits in Suffolk sheep

Spanish Journal of Agricultural Research, 2018
The aim of this study was to estimate the coefficients of heritability and genetic correlations among visual scores (conformation, CPW; precocity, PPW; musculature, MPW) and reproductive traits: age at first lambing (AFL) and scrotal circumference (SC ...
Juliana V. Portes, Adriana L. Somavilla, André L. Grion, Laila T. Dias, Rodrigo A. Teixeira   +4 more
doaj   +1 more source

Effect of Bos taurus DNA proportion in sexual precocity traits and backfat thickness in Nellore breed [PDF]

, 2005
O presente trabalho teve como objetivos estimar os efeitos da inclusão de linha materna e do DNA mitocondrial (mtDNA) nos modelos de avaliação genética, avaliar o efeito do DNA satélite em características de desenvolvimento ponderal, bem como estimar ...
Luís Gustavo Girardi Figueiredo
core   +3 more sources

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

Revista 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, Jesús Alfonso Sánchez Viafara, Gisvani Lopes de Vasconcelos, Gabriel Miranda Moreira, Cintia Vanin Ribeiro, Nathália Alves, Marcos Brandão Dias Ferreira, José Camisão de Souza   +7 more
doaj   +1 more source

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

Animal, 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, H.N. Oliveira, J.P. Eler, J.A. Silva, M.H. Van Melis   +4 more
doaj   +1 more source

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

PLoS 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, Faider Alberto Castaño Villadiego, Fabyano Fonseca E Silva, Breno Soares Camilo, Victor Gomez León, Thiago Peixoto, Edgar Díaz, Denise Okano, Paula Maitan, Daniel Lima, Simone Facioni Guimarães, Jeanne Broch Siqueira, Rogério Pinho, José Domingos Guimarães   +13 more
doaj   +1 more source

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

Frontiers 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, Hong-kui Yu, Xiao Liu, Jia-kun Chen, Shan Wang, Xian-yue Quan   +5 more
doaj   +1 more source

Across‐breed validation study confirms and identifies new loci associated with sexual precocity in Brahman and Nellore cattle [PDF]

, 2019
The aim of this study was to identify candidate regions associated with sexual precocity in Bos indicus. Nellore and Brahman were set as validation and discovery populations, respectively.
de Albuquerque, Lucia Galvão [UNESP], Albuquerque, Lucia Galvão, Salinas Fortes, Marina Rufino, Thaise Pinto de Melo, Lucia Galvão de Albuquerque, de Melo, Thaise Pinto [UNESP], Marina Rufino Salinas Fortes, Carvalheiro, Roberto [UNESP], Roberto Carvalheiro, Ben Hayes, Melo, Thaise Pinto, Hayes, Ben, Carvalheiro, Roberto   +12 more
core   +1 more source

Paternal Sperm Gnas‐ICR Epigenetic Programming Contributes to PPP‐Like Phenotypes in Female Offspring

Advanced Science, EarlyView.
A paternal glucocorticoid–sperm Gnas‐ICR axis is linked to ovarian endocrine programming in female offspring. Paternal preconception caffeine exposure elevates corticosterone, promotes sperm Gnas‐ICR hypermethylation, and is associated with ovarian Gnas upregulation, cAMP/PKA/CREB–StAR activation, enhanced estradiol synthesis, and PPP‐like phenotypes ...
Jing Huang, Lu Chen, Tiancheng Wu, Yating Li, Hui Wang   +4 more
wiley   +1 more source

Clinical studies on sexual precocity [PDF]

, 1985
의학과/석사[한글] 성조숙증은 원인을 알 수 없는 경우가 많지만 중추 신경계, 성선, 부신등의 질환에 의해 나타날 수 있고 각 원인에 따른 치료가 필요하다. 저자는 1778년 8월부터 1984년 7월까지 연세의료원 소아과에 성조숙을 주소로 내원한 33명의 환아에 대하여 병력조사와 진찰, 방사선 검사, 호르몬 측정, 그리고 LHRH 자극시험을 하여 다음과 같은 결과를 얻었다. 1.
안기석
core  

Descriptive Epidemiology From the Myhre Syndrome Foundation Registry: The Value of Self‐Reported Data

American Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView.
ABSTRACT Myhre syndrome is an ultrarare genetic disease characterized by short stature, distinct craniofacial features, cardiovascular and respiratory fibrosis and stenosis, neurodevelopmental delays, autism, intellectual disability, and hearing loss. The natural history of Myhre syndrome is still not fully understood due to a small patient population ...
Mary K. Young, Armelle Pindon, Maggie R. Brand, Kate Wears, Katherine H. Young, Alyssa Mendel, Michael J. Lyons   +6 more
wiley   +1 more source