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Articles by Damiana Rita Ekastuti
Total Records ( 2 ) for Damiana Rita Ekastuti
  Tyas Rini Saraswati , Wasmen Manalu , Damiana Rita Ekastuti and Nastiti Kusumorini
  An experiment was conducted to study the effects of period of turmeric powder supplementation and ration quality on egg production in quails. One hundred and fifty female quails were assigned into a completely randomized design with a 2 x 5 factorial arrangement. The first factor was ration quality consisted of two levels i.e., ration with high carbohydrate (standard protein) and ration with high protein (standard carbohydrate) contents. The second factor was a period of turmeric supplementation (at a dosage of 54 mg/quail/day) consisted of 5 levels i.e. (1) Without turmeric supplementation (control) (2) 30 days at the age of 14 to 44 days (3) 30 days at the age of 45-75 days (4) 30 days at the age of 7-8 months and (5) 8.5 months at the age of 14 days to 9 months. Each experimental unit consisted of 15 quails. Parameters measured were feed and water consumptions, total number of egg production, follicle hierarchy, liver functions, oviduct weight and length and blood metabolites. The results showed that quails supplemented with turmeric for 30 days prior to sexual maturity and for 8.5 months started before sexual maturity gave the highest egg production (20 and 17%, respectively), liver function, vitellogenin secretion, follicle development and blood metabolites. Ration with high carbohydrate with standard protein content gave the best egg production, liver function and blood metabolites. It was concluded that improvement of liver functions could increase total egg production by increasing yolk precursors synthesis and their depositions in the developing follicles.
  Tyas Rini Saraswati , Wasmen Manalu , Damiana Rita Ekastuti and Nastiti Kusumorini
  This research was designed to study the profile of the hormones estriol, progesterone, in the blood during a cycle of ovulation in controlled laying hens and laying hens that treated by giving the turmeric powder. Determination of hormone profile was done on laying hens. Six laying hens aged 20 month were divided into two experimental unit. Each experimental unit consist of three laying hens i.e., P0: control (not supplemented with turmeric powder), P1: turmeric powder supplementation at a dose of 405 mg/laying hens/day for a month. Blood was drawn via jugular vein by 4 mL. Blood sampling performed every 2 h starting after hen lay eggs during a cycle of ovulation, then retrieved and analyzed the serum levels of estrogen and progesterone. The data graphed to determine the profile of the hormones estrogen, progesterone and compared between the controlled and the treated with turmeric powder. The results showed that administration of turmeric powder can shorten the cycle of ovulation about 5 h 35 min. Turmeric powder did not affect the pattern of fluctuations in the hormone progesterone. There are 4 progesterone peaks during the first cycle of ovulation both in controlled laying hens and laying hens that treated with turmeric powder. There was a change to the hormone estriol fluctuations. In controlled laying hens takes four peaks hormone estriol in an ovulatory cycle, whereas in laying hen treated with turmeric powder was 1 hormone estriol peak occurring approximately 15 h before ovulation.
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