ORCID Profile
0000-0002-0049-1546
Current Organisation
Universidade Estadual Paulista Júlio de Mesquita Filho
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Publisher: Springer Science and Business Media LLC
Date: 04-03-2021
Publisher: FapUNIFESP (SciELO)
Date: 08-2022
Abstract: ABSTRACT The aim of this study was to evaluate the reproductive performance of red-winged tinamous in captivity using different mating systems during three breeding seasons. The data were collected from August to March during three breeding seasons of the species. Ten couples and four groups of red-winged tinamous were randomly selected for formation of the monogamous and polygynous mating system, respectively, with egg collection from both systems. The traits evaluated were number of eggs per female, egg breaking and egg fertilization. Data were statistically analyzed by the least square method and logistic regression. Animals in couples mating strategy were superior (P .05) in terms of number of eggs per female compared to the group mating strategy. High egg breaking rate (P .05) in the red-winged tinamous groups was observed. Eggs of animals in couples mating strategy were 5.24 and 11.5 more likely to be fertilized than those of group strategy in two breeding seasons. In general, the reproductive efficiency in terms of low egg breaking, high egg production and fertility was observed for red-winged tinamous from the monogamous mating system.
Publisher: Elsevier BV
Date: 08-2014
Publisher: Wiley
Date: 17-04-2020
DOI: 10.1111/RDA.13679
Publisher: FapUNIFESP (SciELO)
Date: 02-2012
DOI: 10.1590/S0100-204X2012000200019
Abstract: The objective of this work was to evaluate the effects of single-nucleotide polymorphisms (SNPs) in the genes IGF1 (AF_017143.1:g.198C T), MSTN (AF_320998.1:g.433C A), MYOD1 (NC_007313:g.1274A G) and MYF5 (NC_007303:g.1911A G) on carcass and meat traits in Nelore (Bos indicus) and Nelore x B. taurus. A total of 300 animals were genotyped and phenotyped for rib eye area (REA), backfat thickness (BT), intramuscular fat (IF), shear force (SF) and myofibrillar fragmentation index (MFI). The effects of allele substitution for each SNP were estimated by regression of the evaluated phenotypes on the number of copies of a particular allele using the general linear model. The polymorphism at IGF1 was non-informative in Nelore animals. In crossbred animals, the IGF1 C allele was associated with greater REA. However, this relation was not significant after Bonferroni correction for multiple testing. The A allele of the MSTN polymorphism was absent in Nelore cattle and was only found in two crossbred animals. The polymorphisms of MYOD1 and MYF5 were little informative in Nelore animals with G allele frequency of 0.097 and A allele frequency of 0.031, respectively. These markers show no association with the analyzed traits in the total s le of evaluated animals.
Publisher: Elsevier BV
Date: 09-2008
Publisher: Elsevier BV
Date: 2010
Publisher: Genetics and Molecular Research
Date: 2015
Publisher: Cambridge University Press (CUP)
Date: 12-04-2010
DOI: 10.1017/S0022029910000075
Abstract: In order to contribute to the breeding programmes of Asian water buffalo, the aim of this study was to analyse the influence of genetic effects in the stayability of Murrah dairy buffaloes. The stayability trait (ST) was defined as the female's ability to stay in the herd for one (ST1), two (ST2), three (ST3), four (ST4), five (ST5) or six years (ST6) after the first calving. The same trait was also considered as continuous and was designated stayability in days up to one (STD1), two (STD2), three (STD3), four (STD4), five (STD5) or six years (STD6) after the first calving. Data from 1016 females reared in nine herds located in the State of São Paulo, Brazil, were analysed. Statistical models included the additive genetic effect of the animal and the fixed effects of the buffalo breeding herd, birth year and birth season. Additive effects for ST were estimated by approximate restricted maximum likelihood using a threshold model, while for STD, the additive effects were estimated by restricted maximum likelihood. Heritability estimates were lower for ST, except for ST1, (0·11±0·07, 0·17±0·06, 0·23±0·06, 0·16±0·08, 0·14±0·09 and 0·16±0·10 for ST1, ST2, ST3, ST4, ST5 and ST6, respectively) when compared with STD (0·05±0·06, 0·18±0·08, 0·40±0·10, 0·49±0·11, 0·41±0·11 and 0·30±0·13, for STD1, STD2, STD3, STD4, STD5 and STD6, respectively). Considering the values of heritability and owing to the serial nature of STD to a specific age, selection for STD3 should have a favourable influence on STD to other ages.
Publisher: Springer Science and Business Media LLC
Date: 14-09-2022
Location: Brazil
No related grants have been discovered for Josineudson Augusto II de Vasconcelos Silva.