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All Journal Majalah Ilmiah Peternakan Journal of the Indonesian Tropical Animal Agriculture
H. Indrijani, H.
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences

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Mathematical model of growth of two purelines of Padjadjaran female quail aged 0 to 6 weeks Anang, A.; Indrijani, H.; Sujana, E.
Journal of the Indonesian Tropical Animal Agriculture Vol 42, No 2 (2017): June
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.42.2.66-71

Abstract

A research was conducted at Quail Breeding Centre of Padjadjaran University.  A hundred quails of female black and brown color of each line was observed from hatch to age of six weeks. Four growth models were compared: Gompertz, Logistic, Richards, and MMF. The best fit was measured with Coefficient of determination (R2) and standard error of prediction (se). The results showed that all observed models have high accuracy with R2 ranging from 0.9950 to 0.9988 for black color, and 0.9984 to 0.9992 for brown color respectively. Standard errors of prediction (SE) ranged from 1.99 g to 4.01 g for black, and from 1.92 g to 2.52 g for brown, respectively. Gompertz model was more favorable with R2 and SE of 0.9988 and 1.99 g for black, and 0.9991 and 1.92 g for brown, respectively. Age at inflection, maximum average daily gains and weights at inflection were 4.18 week, 27.87 g and 100.23 g for black line and 3.38 week, 25.05 g and 75.34 g for brown line, respectively.
PENGARUH LAMA PENYIMPANAN DAN UMUR AYAM TERHADAP INDEKS ALBUMEN DAN INDEKS YOLK PADA TELUR AYAM A,, PUTRI; GARNIDA, D.; INDRIJANI, H.
Majalah Ilmiah Peternakan Vol 26 No 3 (2023): Vol. 26 No. 3 (2023)
Publisher : Fakultas Peternakan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MIP.2023.v26.i03.p09

Abstract

Eggs are a source of animal protein with affordable price and become popular among consumers. But, the quality of eggs would be rapidly decreased when the eggs are stored for long time. Egg quality can be influenced by many factors, such as temperature and humidity, hens age, and storage time. This study aims to determine the effect of storage time and hens age on the albumen index and yolk index of chicken eggs. This study used an experimental method with a Completely Randomized Nested Design with storage time of 5, 10, 15 and 20 days nested for 38 and 70 weeks of hens age. The results showed that hens age did not have a significant effect (P>0,05) on the albumen index and yolk index, while storage time nested on hens age had a significant effect (P<0,05) on the albumen index and yolk index. The results showed that eggs from 38 weeks old hens were still suitable for consumption after 15 days of storage time with albumen index and yolk index values of 0,0397 and 0,3032. At the age of 70 weeks, eggs can be consumed for a maximum of 10 days of storage time with albumen index and yolk index values of 0,0507 and 0,3541.
Co-Authors A,, PUTRI A. Anang GARNIDA, D. Sujana, E.