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Articles by Limai Lan
Total Records ( 2 ) for Limai Lan
  Asep Anang , Iwan Setiawan , Heni Indrijani and Limai Lan
  Objective: This study evaluated the growth and feed intake of Rambon ducks, a type of local Indonesian ducks. Materials and Methods: This study evaluated growth using 6 models, including the Brody, Gompertz, Logistic, Morgan Mencer Flodine (MMF), Richards and von Bertalanffy models. The feed intake model was estimated using the rational function equation. A total of 80 selectively-bred layer ducks (40 males and 40 females) were reared for 22 weeks. Results: All growth models applied were a good fit for both female and male ducks. The Logistic model with three parameters had the best fit with the highest correlation beween actual and predicted values and lowest standard error of estimation. High correlations also indicated that the rational function model had a good fit and successfully predicted feed intake of the ducks from hatching to 22 weeks. Conclusion: The Brody, Gompertz, Logistic, Morgan Mencer Flodine, Richards and von Bertalanffy models had a good fit and successfully predicted the growth of Rambon ducks from hatching to 22 weeks, however, the Logistic model had the best fit. The rational function model also had a good fit and successfully predicted feed intake of the ducks from hatching to 22 weeks.
  Limai Lan and Leonie Worowan
 

Background and Objectives: Morphometric traits play important role in the selection and breeding programs for genetic improvement of Muscovy ducks. The objective of the current study was to measure variations in some morphometric traits using the plumage colors of Muscovy duck population under farm conditions. Materials and Methods: This study was conducted at the poultry unit of PNG-UNRE farm using 38 randomly mated adult Muscovy ducks. Four phenotypes (plumage colors); [Chocolate (n = 7), Lavender, (n = 5), Silver (n = 7) and White (n = 19)] were measured. Copra meal was fed to birds daily and allowed to scavenge during the day within the fenced farm. Means and standard deviations of all measured traits were computed. Results: White phenotype was dominant among Muscovy duck population under farm conditions. The highest body weight (BW = 1875.71±243.64 g) and body size (BS = 30.86±1.57 cm) was observed in silver colour. The highest shank length (SL = 4.86±0,69 cm), body height (BH = 12.80±1.30 cm) and body length (BL = 12.80±1.30 cm) was observed in Lavender colour; while the highest beak length (BkL = 4.86±0.69 cm) and neck length (NL = 14.00±0.82 cm) was observed in Chocolate colour. Conclusion: The existing variations in traits among species and individuals are commonly observed situation in genetics across all species of livestock. Despite existing variations, silver phenotype has the highest body weight (BW= 1875.71±243.64 g) and body size (BS = 30.86±1.57 cm). Body weight is a vital economic trait which should be considered for selection and genetic improvement.

 
 
 
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