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Common Duck-White Tsaiya
Location of Conservation: Ilan Research Station
Taiwan Livestock Research Institute
28-1 Jehsin village
Wuchieh, Ilan, Taiwan
Republic of China
Tel: 886-39-503107∼9
Fax: 886-39-501950
Contributor: Mr. Jang-Fang Huang
Visible characteristics
 
-
White tsaiya originated from brown tsaiya and named TLRI No.1.
-
Congregate and play in water. Orange-yellowish beak and feet.
-
Jittery, easily frightened.
-
Drakes have sexual feather on tail and hen don't have.
| 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 |
| 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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