Classification of linear properties of participated cow body used in progeny test in east java

Abstract

This study aims to classify the linear characteristics of the lactation cow's body as Participated Cow used in the progeny test of dairy cows at KAN Jabung, Malang, East Java. Linear body traits, such as udder characteristics reflect milk production capability. The study involved 180 lactating cows. The research method employed a survey approach with data collection through purposive sampling, focusing on lactating cows based on specific criteria. Data analysis was conducted using descriptive analysis, calculating mean value, maximum and minimum values, value of diversity and standard deviation. The results indicated that the Participated Cow linear characteristics including front leg strength, rear leg position, body depth, buttock angle, front randomized angle, rear randomized angle, udder height, udder width, udder depth, front nipple length and back nipple length respectively had a score of 5; 5; 5,5; 4; 5,5; 5; 7; 3; 5; 5; 4. In conclusion, linear classification on PC that meets the ideal score is only 3 variables: hind legs, udder depth and nipple length with a percentage of 27.27%, so further research is needed to evaluate linear properties of PC so that it can be used as a guideline for the selection of PC in the progeny test.