Aryani, Linda Noor (2022) MORPHOMETRIC PHENOTYPE STRUCTURE OF THE CHEST AND NECK AS A DETERMINANT OF SEXUAL DIMORPHISM IN TURI DUCKS. MORPHOMETRIC PHENOTYPE STRUCTURE OF THE CHEST AND NECK AS A DETERMINANT OF SEXUAL DIMORPHISM IN TURI DUCKS. (Unpublished)

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Abstract

This study aims to prove the morphometric differences in the phenotype structure of the chest and neck as a determinant of sexual dimorphism. This study used a sample of DOD Turi ducks, with a total of 10 males and 10 females which were then reared for 8 weeks. Measurements were made every 2 weeks using a measuring tape with an accuracy of 0.1 cm and a digital caliper with an accuracy of 0.01 cm. Data was processed using ANOVA and repeated measures in SPSS 25. The results showed that the morphometric differences in chest circumference, chest width, and neck circumference of male Turi ducks were greater than that of female Turi ducks at 2-8 weeks of age, while morphometric differences in neck length occurred at 2-4 weeks of age. The growth pattern of the neck length of male and female Turi ducks did not differ, while the growth pattern of chest circumference, chest width and neck circumference of male Turi ducks was higher than that of female Turi ducks. The highest growth rate of chest circumference, chest width, and neck length in all sexes occurred at 4 weeks of age, while neck circumference occurred at 2 weeks of age. Differences in morphometric, pattern, and growth rate of the chest and neck between male and female Turi ducks are caused by genetic differences and the ability to utilize feed.

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