نتایج جستجو برای: age at sexual maturity asm
تعداد نتایج: 4212744 فیلتر نتایج به سال:
A comprehensive study was carried out in Gramapriya male line (PD-6) chicken with respect to growth, production and egg quality traits utilizing the data generated from 1995 chicks 230 hens S-8 generation at ICAR-Directorate of Poultry Research, Hyderabad, Telangana. Highly significant differences among hatches were observed for body weight, shank length, age sexual maturity (ASM), (EP), weight...
This study aimed to characterize production and reproduction performances in Rhode Island Red-White strain chicken developed and maintained at the Central Avian Research Institute, Izatnagar. Three hundred and forty six fertile eggs were set in automated electric incubation and 234 chicks were investigated in three hatches. The performance data was analyzed by least squares analysis of variance...
In this study, the reproductive biology of chub population in Hafik Lake was investigated. 242 samples were caught between April and November 2009. The age of S. cephalus samples were found to range between I-VIII in addition, 153 of them were female and 89 were male. Their fork lengths changed between 114-332 mm, and body weights were between 22.5 and 550.3 g. Male specimens were determined t...
In this study, the reproductive biology of chub population in Hafik Lake was investigated. 242 samples were caught between April and November 2009. The age of S. cephalus samples were found to range between I-VIII in addition, 153 of them were female and 89 were male. Their fork lengths changed between 114-332 mm, and body weights were between 22.5 and 550.3 g. Male specimens were dete...
random regression models (rrm) have become common for the analysis of longitudinal data or repeated records on individual over time. the goal of this paper was to explore the use of random regression models with orthogonal / legendre polynomials (rrl) to analyze new repeated measures called clutch size (cs) as a meristic trait for iranian native fowl. legendre polynomial functions of increasing...
In the current study, two groups of lines Coturnix Japonica Quail that were selected for hig (HW) and low (LW) body weight at the age of 4 weeks for 7 generations were used. HW line after selection for 7 generations was significantly heavier than LW line in the same generation at the age of 28days (p<0.01). 21 females, and 11 males from the HW, 18 females and 10 male from the LW lines were mat...
OBJECTIVE To provide clinically meaningful, normative reference data that describe the timing of sexual maturity indicators among a national sample of US children and to determine the degree of racial/ethnic differences in these estimates for each maturity indicator. METHODS Tanner staging assessment of sexual maturity indicators was recorded from 4263 non-Hispanic white, black, and Mexican A...
One of the main problems of multiple-trait genetic evaluation in poultry breeding is high computing costs. Principal components analysis (PCA) is a method for reducing the number of traits in correlated trait analysis. The aim of the present study was to determine the most effective principal components (PCs) of internal egg quality and some performance traits of Azarbayjan native chickens. ...
The present study was carried out during two successive generations beside base generation, to improve egg mass (EM) through selection in developed Baheij chicken strain and to study correlated response of some production traits. The results showed that: 1Egg mass means for based generation (G0), first generation (G1) and second generation (G2) were 1741.29, 1904.52 and 2157.38g for S line and ...
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