Common Duck-White Tsaiya

Drake

Hen


Location of Conservation: Ilan Research Station
Taiwan Livestock Research Institute
28-1 Jehsin village
Wuchieh, Ilan, Taiwan
Republic of China
Tel: 886-39-5031079
Fax: 886-39-501950
Contributor: Mr. Jang-Fang Huang

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Visible characteristics

   
  1. White tsaiya originated from brown tsaiya and named TLRI No.1.
  2. Congregate and play in water. Orange-yellowish beak and feet.
  3. Jittery, easily frightened.
  4. Drakes have sexual feather on tail and hen don't have.

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Performance
Growth Line 101 Line 102 Line 103
Body weight at
@10 weeks old(M) 1.35±0.13 Kg 1.24±0.14 Kg 0.91±0.13 Kg
@16 weeks old(M) 1.41±0.12 Kg - Kg 1.18±0.11 Kg
@20 weeks old(M) 1.50±0.10 Kg 1.50±0.14 Kg 1.26±0.13 Kg
@40 weeks old(M) 1.50±0.10 Kg - Kg - Kg
Body weight at
@10 weeks old(F) 1.30±0.13 Kg 1.18±0.12 Kg 0.87±0.13 Kg
@16 weeks old(F) 1.39±0.14 Kg - Kg 1.13±0.10 Kg
@20 weeks old(F) 1.45±0.16 Kg 1.41±0.13 Kg@ 1.33±0.13 Kg
@40 weeks old(F) 1.58±0.17 Kg@ - Kg - Kg
8th feather lenght
@10 weeks old(M) 13.3±2.4 cm 12.1±2.2 cm 5.89±2.8 cm
@16 weeks old(M) 16.9±0.6 cm - cm 16.1±0.7 cm
@20 weeks old(M) 17.1±0.5 cm 16.5±0.6 cm 15.6±0.5 cm
8th feather length
@10 weeks old(F)@ 13.6±2.7 cm 12.8±2.4 cm 6.89±2.7 cm
@16 weeks old(F) 16.5±0.6 cm - cm 15.3±0.5 cm
@20 weeks old(F) 16.7±0.7 cm - cm 15.1±0.6 cm

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Reproductive
Performance Line 101 Line 102 Line 103
Age at first egg 125±13 days 133±13 days @ 130±14 days
Number of eggs
produced at
40 weeks old 123±28 eggs 107±27 eggs 102±28 eggs
360 days old 191±34 eggs 190±25 eggs 165±30 eggs
Egg weight
produced at
30 weeks old 63.2±4.4 g - g 56.9±4.5 g
40 weeks old 70.1±5.1 g 69.7±4.8 g 59.9±3.8 g
Shell strength of
egg produced at 30@@ 3.8±0.6 Kg/cm2@ - Kg/cm2 - Kg/cm2
weeks old
Yolk weight of egg
produced at 30 20.1±1.8 g - g - g
weeks old
                            

Origin of White Tsaiya

White Tsaiya has been developed by the Ilan Research Station (Duck Research Center), TLRI,ROC in Taiwan, over the last decades. The white tsaiya is descended from the few individuals with pure white feathers in the Brown Tsaiya population. The white tsaiya is used as the female terminal line for the production of white mule ducks in a three-way cross, i.e. it is crossed with white Pekin drakes to produce white Kaiya hens, which are then inseminated with semen of white Muscovy drakes.

At present,three lines were kept at TLRI for this variety. L101 is a control population. L102 is a selected line for white plumage by recurrent selection. L103 is a inbred line bred by fullsib mating for more than 13 generations with a 0.926 of inbreeding coefficient. 

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