Determination of dairy productivity characteristics, phenotypic, genetic and environmental trends in Jersey cattle growing in Karakoy Agriculture Administration

In this study, environmental factors affecting actual and 305 day milk production and some genetic, environmental and phenotypic trends of 305 day milk production of Jersey cattle growing in Karakoy Agricultural Administration were investigated. wombat statistical package program was used to estimate heritability and breeding value from genetic parameters. SPSS statistical package program was used to determine the effect of genotypic, environmental factors and phenotypic trends. Among the investigated production parameters, effect of the parity, year and season, lactation period on actual and 305 day milk production were found as highly significiant (P<0,01). Researching Jersey cattle was determined that the average lactation length was 310±5 days, the total milk production was 4462±90 kg and the 305 day milk production was 4183±70 kg. Environmental, phenotypic and genetic trends for 305 day milk production were calculated as 11, 26 kg/year, 29,97 kg/year and 18,71 kg/year, respectively. Average heritability was determined as 0,344 for 305 day milk production. As a result, it can be said that a progress has been made on Jersey cattle in Karakoy Agricultural Administration in terms of phenotypic, genetic and environmental between 2005 and 2014 and business administration and genotype are good.