Pengaruh Penggantian Sebagian Pakan Komersial Ayam Broiler dengan Bahan Pakan Lain terhadap Pertumbuhan Ayam Kampung dan Pendapatan Peternak

The Effect of Partial Replacement of Broiler Commercial Feed with Other Feed Ingridients to Native Chicken Growth and Farmers' Income. The assessment aims to determine the effect of substitution of commercial broiler feed with other feed ingredients for local chicken growth. Five hundred free-range chickens aged four weeks were divided into four treatments of feed, each treatment was repeated five times. Treatment R60 was substitution feed up to 60% and commercial broiler feed of 40%; treatment R50 was to substitution feed up to 50% and commercial broiler feed of 50%; treatment R40 was to substitution feed up to 40 % and commercial broiler feed of 60%; (R0) commercial broiler feed 100%. Observations were carried out for five weeks on feed intake and body weight gain. The results showed that the substitution of 40% commercial broiler feed with corn and local chicken feed did not affect body weight gain and feed conversion ratio significantly (P <0.05), however with 50% and 60% substitution, decreased the body weight gain and feed conversion significantly. Substitution of 40% commercial broiler feed with corn and local chicken gave the highest income compared to the other feed formula

Variation of Pigment and Anthocyanin Content of Local Black Rice From YOGYAKARTA on Two Altitude

There are several types of local black rice with different quality which well known in Yogyakarta. However, the altitude location affect to the quality and pigmentation of local black rice remains were unknown. The objectives of this research was to determine the variation of rice pigmentation and total anthocyanin content of Yogyakarta local black rice which planted on two differentaltitudes location. This study was conducted from February to December 2015 with the experimental design using factorial experiment. The first factor is seven local black rice varieties from Yogyakarta (G) and second factor is two different altitude locations: lowlands (26 m asl) of Gulon, Sri Hardono, Pundong, Bantul (A1), and in medium lands (462 m asl) of Padasan, Pakembinangun, Pakem, Sleman (A2). The total anthocyanin content and rice pigmentation were observed. Three color variables for rice pigmentation, i.e. lightness (L*), greenness (a*), and yellowness (b*) were measured by Chroma Meter, Konica Minolta– Minolta CM-2006. The results showed that there was diversity on pigmentation and total anthocyanin content in the black rice grown at different altitude. Local variety Tugiyo Umur Panjang has any anthocyanin highest in the low altitude location (Bantul), while local variety Sembada Hitam was showed the highest anthocyanin at the height of the medium (Sleman). A positivesignificant correlation was found among color variables, i.e. lightness (L*), greenness (a*), and yellowness (b*) and there was a negative significant correlation between total anthocyanin content and L*, a*, and b* color variables

Kemajuan Genetik Dan Heritabilitas Karakter Agronomi Padi Beras Hitam Pada Populasi F2

Black rice is a local rice variety with some advantages and weaknesses. The desirable character of black rice is its high anthocyanin content, while the weaknesses are late maturing, tall plant stature and low grain yield. Crosses were made between two parents aimed to recombine the superior traits. The effectiveness and efficiency of selection would be determined by the magnitude of the heritability of traits and the selection progress. This study was aimed to determine the heritability estimates in a broad sense and the genetic advance of agronomic characters of F2 generation, from crosses of local black rice and high yielding variety of white rice. The experiment was conducted in Padasan, Pakembinangun, Pakem, Sleman, Yogyakarta from January to May 2013. The F2 population derived from crosses of black rice x white rice, with the morphological traits of hairless black rice (S) crossed with Situbagendit (G) white rice, Cempo ireng (C) with Situbagendit (G) and Cempo ireng (C) with Inpari 6 (I). The F2 plants population were planted without replication. Genetic parameters estimated were calculated for broad sense heritability and genetic advance from selection. Results showed that the F2 population had high broad sense heritability estimates for all characters observed, including: plant height, flag leaf length, number of productive tillers, panicle length, number of filled grains per panicle, number of empty grains per panicle, maturity and rice color, in the three F2 populations obtained from crosses of S x G, C x G and C x I. Only the plant height of S x G cross had a medium broad sense heritability estimate. The large heritability estimates indicated that the respective character was controlled by genetic factor more than environmental ones. High genetic advance would be obtained in the flag leaf length, number of productive tillers, panicle length, number of filled grains/panicle, number of empty grains/panicle and rice color from S x G, C x G and C x I crosses. Genetic advance of plant height was medium (at S x G and C x I crosses) to high (C x G crosses). The maturity trait had low genetic advance on cross S x G; C x G; and Cx I. The high value of genetic advance of character would suggest that selection on the character\u27s appearance would be successful