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| Leão,R.A.C.; Castro,F.L.S.; Xavier,P.R.; Vaz,D.P.; Grázia,J.G.V.; Baião,N.C.; Avelar,G.F.; Marques Júnior,A.P.. |
| ABSTRACT In broiler breeder roosters, the weight of the testes is positively associated with daily sperm production and fertility. In birds, the testes are located in the coelomic cavity, not being accessible to reproductive evaluation as mammalian testes. The reproductive evaluation of roosters is based on phenotypic traits. Any changes on testes will be reflected on fertility levels. The aim of this paper was to evaluate the potential of association of phenotypic traits as body weight (BW), comb scores (COS), cloaca scores (CLS) and feet scores (FS) with testicular morphometric parameters in adult Cobb® Mx roosters in two ages (25 and 45 weeks of age). The low BW roosters had lower testes weight (TW), smaller seminiferous tubule diameter (STD) and lower... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Testicular regression; Rooster; Histomorphometry; Phenotypic characteristics; Histology. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601529 |
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| Celeghini,ECC; Arruda,RP; Albuquerque,R; Silva,FHA; Faria,DE; Andrade,AFC; Nascimento,J; Raphael,CF. |
| This experiment was designed with the objective of developing a simple, practical, and high repeatability technique for the simultaneous evaluation of the integrity of the plasmatic and acrosomal membranes, as well as funcional mitochondria of domestic fowl spermatozoa using an association of fluorescent probes. Four ejaculates (motility > 80% and abnormal morphology < 10%) from each of six Ross male broiler breeder (n=24) were diluted in TALP sperm medium (25x10(6) spermatozoa/mL) and split into two aliquots, and one of these aliquots was flash frozen in liquid nitrogen and thawed to damage all cellular membranes. Three treatments were prepared from these aliquots, with the following ratios of Fresh semen:Flash frozen semen: 100:0 (T100), 50:50... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fluorescent probes; Membranes; Rooster; Sperm. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000300001 |
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| Rocha Jr.,JM; Mahecha,GAB; Dornas,RAP; Kuana,SL; Martins,NRS. |
| A study on the occurrence of epididymal lithiasis (EL) in Gallus gallus domesticus of different breeds and from different geographical regions of Brazil was carried out. Forty breeding roosters were collected in the states Santa Catarina, São Paulo, Minas Gerais, Espírito Santo and Goiás, representing two specific pathogen free Leghorn lines (SPF), one commercial Leghorn layer breeder (Hy-Line) line, two commercial broiler breeder lines (Ross and Cobb), and two backyard chicken flocks. In commercial poultry breeders, EL was observed mainly after 55 weeks of age, and lithus resulted in lower fertility caused by inadequate maturation of spermatozoa and testicular atrophy, which evolved to more severe testicular dysfunction at 100 weeks of age. One hundred... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Epididymal lithiasis; Gallus gallus domesticus; Infertility; Rooster; Testicular calculus. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100004 |
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| Geraldo,I; Mahecha,GAB; Martins,NRS. |
| Epididymal lithiasis (EL) histopathology is described using light and electronic microscopy in roosters (Gallus gallus domesticus) naturally affected by EL in Minas Gerais, Brazil. The histologic and morphological changes by EL in roosters was performed regarding cellular and subcellular details through light and electron microscopy. Efferent ductules epithelium lysosomal increase in size and numbers, membrane rupture, cellular vacuolation, ciliary loss, basal membrane degeneration, inflammatory reaction with mononuclear infiltrations, edema, epithelial and vascular endothelium losses were described. All industrial and freerange chickens showed EL in varying degrees in the efferent ductules (ED). However, ED altered areas did not correlate with the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Epididymal lithiasis; Histopathology; Light microscopy; Electron microscopy; Gallus gallus domesticus; Infertility; Rooster; Testicular calculus. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100004 |
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