Made available in DSpace on 2022-04-28T18:59:19Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-12-01; The aim of this study was to evaluate the physical and morphological characteristics of semen from young cattle subjected to experimental testicular degeneration by scrotal insulation method. There were used three animals of the Holstein breed with an average of 12 months of age undergoing breeding soun...
Aiming to determine the relationship between the frequency of testicular shape and the andrological aspects in young Nellore bulls, 18,676 animals were assessed. All andrological examinations were performed between the years 2000 and 2008. Animals were classified as able for breeding, able for breeding in natural mating system, unable for breeding and discarded. The testicular shape was classified as long, fair...
The present work aimed to estimate heritability and genetic correlations of reproductive features of Nellore bulls, offspring of mothers classified as superprecocious (M1), precocious (M2) and normal (M3). Twenty one thousand hundred and eighty‐six animals with average age of 21.29 months were used, evaluated through the breeding soundness evaluation from 1999 to 2008. The breeding soundness features included p...
In view of the importance of the genetic material of local breeds in the swine industry and the lack of information about reproductive performance of Piau females, two experiments were conducted to evaluate puberty and sexual maturity as well as the morphometry of embryos/fetuses, placenta and uterus during the first 90 days of gestation in Piau breed and Commercial line gilts. In experiment I, 37 Piau and 25 c...
The objective of this study was to investigate the relationship between testicular echotexture and seminal quality, in addition to evaluate the testicular parenchyma echogenicity pattern in young Montana bulls classified as sound and unsound for breeding. Fifty-two young Montana Tropical Compound bulls from 22 to 33 months of age were used. The animals were previously evaluated by breeding soundness evaluation ...
O objetivo neste estudo foi avaliar diferentes osmolaridades e tempos de incubação durante o teste hiposmótico e suas correlações com a congelabilidade do sêmen de touros zebuínos. Foram utilizados 30 ejaculados de seis touros adultos da raça Nelore. No sêmen in natura foi feita avaliação física e morfológica, classificação quanto à coloração supravital e o teste hiposmótico. No teste hiposmótico foram utilizad...
Objetivou-se determinar a idade à puberdade e maturidade sexual e sua relação com peso corporal e mensurações testiculares em tourinhos da raça Simental criados sob regime extensivo em clima tropical. Utilizaram-se 44 tourinhos com 1 a 30 meses de idade. As mensurações corporais e testiculares foram feitas mensalmente e os ejaculados coletados quinzenalmente, a partir dos seis meses de idade, utilizando-se o mé...
Os objetivos neste estudo foram verificar se a própolis e o ácido ascórbico têm efeito sobre a integridade da membrana plasmática dos espermatozoides de caprinos e investigar o potencial desses antioxidantes no uso de meios diluidores de criopreservação de sêmen caprino. Foram utilizados cinco bodes adultos das raças Alpina (n = 2) e Saanen (n = 3). Após a coleta de sêmen, realizaram-se o exame físico do sêmen ...
Made available in DSpace on 2016-07-07T12:37:39Z (GMT). No. of bitstreams: 0 Previous issue date: 2012. Added 1 bitstream(s) on 2016-07-07T12:46:21Z : No. of bitstreams: 1 ISSN0102-0803-2012-36-02-133-135.pdf: 847514 bytes, checksum: 803369b723f02fc1434eaaf2c4f3f253 (MD5); Este estudo reporta um bubalino mestiço, com 27 meses de idade, 188 kg de peso de carcaça, sem histórico reprodutivo. Sangue foi coletado pa...
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior; The objective was to study the pattern of testicular echogenicity in young bulls at different sexual maturity stages and the relationship between testicular echotexture and degree of commitment caused by fibrotic lesions with semen quality of adult Nelore and Montana Tropical Compound bulls. There were used 405 young (aged between 21 and 33 months) an...