Báo cáo sinh học: "Connectedness among herds of beef cattle bred under natural service" pot

... connectedness among herds was applied to a beef cattle population bred by natural service. It consists of two steps: (a) computing coefficients of determination (CDs) of comparisons among herds; and ... in Spain. The objective of this study was to measure the con- nectedness among herds of beef cattle bred by natural service. In particular, the CD of com...

Ngày tải lên: 14/08/2014, 13:21

... Estimation of non- additive genetic variances in three synthetic lines of beef cattle using an animal model. J Anim Sci 73, 1002-1011 1 Snelling WM (1994) Genetic analyses of ... estimates of dominance were body traits. The estimates of the dominance variance were within 10-29% of the estimates of the additive variance, with a mean o...

Ngày tải lên: 09/08/2014, 18:22

... computationally, just because of the number of quartets that are exam- ined. In addition, needing to store a large set of quartet s also impacts the memory requirements of the method. Table 1 Correlation ... robust implementations of the most accurate supertree meth- ods. The compu tational limitations of QMC(Exp +TSQ) and Q-Imp result from the fact that each of these meth- ods...

Ngày tải lên: 12/08/2014, 17:20

... component of the economic activity of the region. The use of molecu- lar data to assess the genetic structure of domestic spe- cies in conservation programmes has been described [59,61-67]. Analysis of ... area, Portugal hosts a wide variety of domestic breeds [4], with as many as 13 autochthonous cattle breeds recognized [4,5]. Analysis of genetic diver- sity of some of t...

Ngày tải lên: 14/08/2014, 13:21

... Ruiz et al (1991) in a Spanish natural population of D buzzatii. However, our analysis is based on the assumption that the offspring of each wild inseminated female was ... (1981). Observed karyotypic proportions in the offspring of each cross were compared to those expected by means of goodness of fit X2 tests. The remaining individuals...

Ngày tải lên: 14/08/2014, 20:20

... nurses in the face of the AIDS epidemic: a pilot study in Zambia. Aids 1994, 8(3):396. 15. Feeley R, Rosen S, Fox M, Macwan'gi M, Mazimba A: The cost of HIV/AIDS Among Professional Staff in ... resented. In our survey of health providers, 52% reported undergo- ing HIV testing in the last 12 months. Of these, more than half (54%) reported having been tested in their clinic of...

Ngày tải lên: 18/06/2014, 17:20

... [3] where a!t-1! is the vector of breeding values of the males at generation t - 1 and xit-l] is the vector of numbers of daughters of each male of generation t - 1 in subpopulation ... et al, 1992). The impact of gene flow can be illustrated by the change over time of the contribution of founder groups to the gene pool of th...

Ngày tải lên: 09/08/2014, 18:22

... reference situation. The values of the index of connectedness and of the criteria of precision connectedness of a disconnected contrast increases as the amount of data decreases, contrary ... factor. Boundaries of the criteria of precision The CD of a contrast is the square of correlation between x’u and xi i, which varies between 0 an...

Ngày tải lên: 09/08/2014, 18:22

... features of natural southern and northern populations of the species for these same characters. MATERIALS AND METHODS A sample of 1 359 males and 1 259 females of Drosophila ... (table I) a sample of > 2 500 X chromosomes and 3 700 autosomes from the natural population of Guimar was examined. A total of 38 inversions, all of them...

Ngày tải lên: 14/08/2014, 19:22

... Verrier 1 Address: 1 Department of Physical Therapy, Faculty of Medicine, University of Toronto, Canada, 2 Department of Health Policy and Administration, School of Public Health, University of North Carolina ... measure of workforce supply, and are often expressed as a ratio in the number of health professionals to a sub-set of the population. In this study, we explore n...

Ngày tải lên: 18/06/2014, 17:20