Báo cáo sinh học: "Genetic parameters for lactation traits of milking ewes: protein content and composition, fat, somatic cells and individual laboratory cheese yield" ppt

... 10.1051/gse:2002024 Original article Genetic parameters for lactation traits of milking ewes: protein content and composition, fat, somatic cells and individual laboratory cheese yield Med. Houcine O THMANE , ... factors and the genetic parameters for total milk traits (fat content, protei n content, casein content, serum protein content, lac...

Ngày tải lên: 14/08/2014, 13:21

... solid content was lower. Within-breed, the genetic standard deviation was 1.8-2 fold larger for fat content than for protein content. The heritability of fat and protein ... yields and on contents. Within-breed of sire genetic parameters Genetic variability of the traits. The estimates of heritability, genetic and phenotypic standard d...

Ngày tải lên: 14/08/2014, 19:23

... BV of the individual itself (DBV = A D, i ); associa- tive BV of the gr oup members ( SBV = − Σ n Sj A 1 , )anda combination of the direct BV of the individual itself and the associative BV of ... combi- nation of the direct breeding value and the associative breed ing values of the group members (DSBV) . Compar- ing genetic parameters of 2STEP and LAM is not strai...

Ngày tải lên: 14/08/2014, 13:21

... shape of lactation curves [16]; A m was the random a dditive genetic effect of the individual m (1,603 levels); PE m was the ge neral random permanent environmental effect of ewe m across lactations ... mean SCC was 403 (× 10 3 cells/ mL) for the whole data , 253 for the bacteria ne gative, and 1,082 for the bacteria positive. Although ranges of SCC for unin- fected an...

Ngày tải lên: 14/08/2014, 13:21

... Nouzilly) for the use of his software dealing with a bivariate analysis of binary traits and continuous traits. The technicians of the Inra farm, La Sapinière, are gratefully acknowledged for all ... estimation of genetic parameters (heritability and genetic correlations). At the same time, the populations were observed for economic traits: body growth and wool tra...

Ngày tải lên: 14/08/2014, 13:22

... posterior means for the proportion of variance of the PE-effect were 0.06 and 0.16 for LSN and 0.05 and 0.10 for LSI in AM and SM respec- tively. For the YF-effects, the means of the posterior ... posterior mean of the heritabil- ity of litter size was 0.10 and 0.08 for LSN and 0.11 and 0.10 for LSI in AM and SM respectively. The PE-effect accounted for ab...

Ngày tải lên: 14/08/2014, 13:22

... vector of underlying means P: vector of parity of cow effects ul: vector of sire of fetus effects U2 : vector of sire of cow effects U3 : vector of cow within sire of cow ... and 0.02 for direct and fetal effects, respectively, with a correlation between both effects of 0.36. Transmitting abilities of bulls were expressed on the...

Ngày tải lên: 14/08/2014, 20:20

... analysed : milk yield, fat and protein contents, fat and protein yields, lactation length (L) and ratio of protein to fat content. Useful content and yield were also analysed. ... genetic variability of protein content was about half that of fat content. The.genetic antagonism with milk yield was stronger for protein content t...

Ngày tải lên: 09/08/2014, 22:22

... methods and 3 replicates by method = 18 × 3 × 3, and one level for founder population), u the vector of unknown parameters for the direct animal genetic effect, c the vector of unknown parameters for ... (ν = 4andS= 0.45) distributions were assigned for variance parameters σ 2 u , σ 2 u ∗ and σ 2 c , σ 2 c ∗ , and a uniform prior bounded be- tween −1 and 1 was assig...

Ngày tải lên: 14/08/2014, 13:22

... chronological year of ring formation. The medium to high broad-sense heritabilities for grain angle in individual rings agreed with estimates obtained for Sitka spruce [11] and other conifers (for review, ... slope of the regression of grain angle on ring number from pith and the grain angle of Genetic parameters for spiral grain 555 Figure 3. Mean grain angle per annua...

Ngày tải lên: 08/08/2014, 14:20