Pig Growth Rates in Vietnam Article Example | Topics and Well Written Essays - 2000 words

Pig Growth Rates in Vietnam - Article ExampleThe data of litter mortality, birth weight, enkindle of origin, twelvemonth of birth, and weight of larger after twenty virtuoso days concerning a sample of one thousand pigs were collected and recorded. The purpose of the study is to compare growth performance of these 2 breeds of pigs by analyzing the power of the different factors monitored in isolation and combined on the growth of pigs represented by their average weight after twenty one days of their birth.To determine the relationship between the daytime 21 average shoat weight and the various influences monitored during the experiment such as breed, farm of origin, year of birth, litter mortality and birth weight, the following Ordinary Least Squares (OLS) regression analyses were examinedThe non-numerical cling to of Breed was coded numerically so that Breed equals one for Landrace (L) piglets and equals to zero for Yorkshire (Y). retroversion analysis was applied with the numerical representation of breed as the independent shifting and the dependent variable star solar day 21 average weight. Table 1 summarizes the results of the regression analysis.Table 1 shows adjusted R-squared of -0.00078 which means the independent variable breed predicts 0.07% of the dependent variable Day 21 average piglet weight. T-stat for this variable is 0.46674 so it is statistically insignificant. Both values indicate changes in breed do not affect the Day 21 average piglet weight. turnaround analysis was applied... 0.000218Adjust R2-0.00078Standard Error0.793569Observations1000Table 1 shows adjusted R-squared of -0.00078 which means the independent variable breed predicts 0.07% of the dependent variable Day 21 average piglet weight. T-stat for this variable is 0.46674 so it is statistically insignificant. Both values indicate changes in breed do not affect the Day 21 average piglet weight. 4.2 Analysis II Relationship between Day 21 fair piglet Weight and do work of OriginThe non-numerical value of the farm-of-origin variable is numerically encoded to allow statistical analysis of the variable using the following code shown in table 2. Table 2 Encoding of Farm of Origin into Number Farm of OriginNumerical CodeA1B2C3D4E5F6G7Regression analysis was applied with the numerical representation of farm of origin as the independent variable and the dependent variable Day 21 average weight. Table 3 summarizes the results of the regression analysis. Table 3Regression results for Day 21 Average Piglet Weight as a function of Farm of OriginIndependent VariableEnumerated Farm of OriginDependent variableDay 21 Average Piglet WeightConstant5.038045Coefficient-0.04348T Stat-2.87992R20.008242Adjust R20.007248Standard Error0.790379Observations1000Table 3 shows adjusted R-squared of 0.007248 which means the independent variable farm of origin predicts 0.7% of the dependent variable Day 21 average piglet weight which is still a small influence but with more ef fect than the breed variable. T-stat for this variable is -2.87992 so it is statistically significant. Both values indicate the limited effect of breed in Day 21 average piglet weight. The Day 21 weight can be predicted to some limited extent using the equationDay 21 Average Weight