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 Wysłany: Wto 20:15, 08 Lut 2011 Temat postu: uggs bestellen Holstein body size, body weight tra |
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Holstein body size, body weight traits and genetic parameters of milk performance estimation and correlation analysis
ductimSi workers eslmm device. (July) 12.3FlokstelnA membership which oc chu U1997Hot ~ einType-P ~ duc-tionSheSumman ~ (February): 10 ~ 11. Pakistan 1999,[link widoczny dla zalogowanych], China's No. 3 dairy cows in this setting, the external environmental factors by smaller body size at this time, the basic performance characteristics such as body weight reflect the true genetic potential of cows, which may be produced by the body size cow ,[link widoczny dla zalogowanych], The heritability of body weight than primiparous cows for a reason. 1 atlas body size, body weight is estimated heritability of each trait value of 1 child 2 to 3 fetal organs like the one-child gender pour flA360734.79827.7551 Height 15.449913.15311360739.230379.5715.2905314435818.1896 body length 49.579944997134.98020319 .320.5224.133522.1327310125 Bust 65430065.409166.3192O. 37O35O. Xi Wai Wai 130.4955133.797212584310.350.390299.24510.11729.2661 4745.172952.078236.4913 deer weight 2233.601837252444.15 0.75720.55799.8312h0.320210.32OA814.66752.44953.161 shovel o. 36o. 41o39o17 ~ o. 45o. 10 ~ 0.51O1O-O. 432.2 body size and weight of the collection of cyberspace related analysis, see Yuan 2. Table 2 Body size, body weight related traits in Table 2 lists the estimated value of the animal model analysis of body measurements obtained, the correlation between body weight traits estimated, upper triangular matrix for the body size and weight of genetic traits related estimates for the lower triangular matrix phenotypic correlation estimates. _ Can be seen from Table 2, the body size, body weight traits showed different degrees of positive correlation, and is characterized by higher than estimates of genetic correlation estimates of phenotypic correlation,[link widoczny dla zalogowanych], especially in chest circumference, body length and other traits with body weight showed a strong positive correlation, so the actual production, you can use these traits and curve fitting regression equation sets. To estimate the weight of adult cows, so even if the actual load conditions do not have cattle, but also through the weight of body size traits are estimates. Nepal 2.3 body weight r-like traits and milk analysis, see Yuan wrapped 3 3 body size, body weight traits and the one-child estimates of milk production traits in animal models of Table 3 for the application of cow body measurements obtained weight traits and milk production traits of a child's genetic and phenotypic correlation estimates. Can be seen from Table 3: The body size, body weight traits and milk production traits is very low, of which the majority of traits and milk yield and fat yield were higher than those associated with milk fat related, in particular, individual body size (chest and abdominal circumference) and milk fat traits weak negative correlation (a 0.006-0.o6); Secondly, certain body size, body weight traits and genetic correlation estimates of milk production traits higher than the corresponding phenotypic correlation. Described above the cow's body size, body weight traits and milk production traits there is less synergy, that is,[link widoczny dla zalogowanych], large size by the corresponding yield higher milk yield of cows, which in breeding stock selection,[link widoczny dla zalogowanych], consider the physical size is necessary to maintain appropriate cow body size, body weight, can make the cow performance and size characteristics are improved simultaneously. But the production performance and body size, body weight is only a weak positive correlation Star not a strong positive correlation, so in breeding stock selection, not the larger the better cattle, feed consumption of cows too large size is relatively large, therefore, appropriate cow body size, body weight is the most important. 3 Discussion 3.1 cow body size and body weight traits and milk production traits synergy exists between the small relationship between the genetic selection, if the improvement of a trait, the other characters will also be improved accordingly, indicating that maintaining a certain cows body is a prerequisite to maintain a high milk performance. 3.2 Type Traits though not exclusively, with direct economic benefits, but it directly reflects the health of the cow and the future can I live longer, the same time, body size can also be characterized as a variety of evaluation criteria. 3.3 Although the cow body size, body weight and milk production traits, the larger the cow is not the better, and appropriate body size, body weight cows, feed accordingly reported higher alcohol I}. 3.4 As body size and weight traits of high heritability, and there is a strong correlation, therefore, through a variety of selection methods can be improved by good results (including the focus on the introduction of foreign blood.) Mouth
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