The improvement of fertility and hatchability of White Roman geese in an environmentally controlled house
Shen-Chang Chang, Min-Jung Lin, Kuo-Chin Wu, and Yu-Shine Jea
This study was to investigate the effect of lighting regime treatment on the body weight gain and reproduction characteristics of White Roman geese kept in an environment-controlled house. Thirty ganders and 90 geese were randomly assigned into four pens, each with 5 ganders and 15 geese. The 6 pens were randomly allotted into 3 lighting treatments (9L:15D, 11L:13D or 13L:11D). Each treatment was replicated 2 times in an experimental unit. The results showed that the geese under 13L:11D lighting treatment had a lightest body weight at the end of experiment in comparison with under 9L:15D and 11L:13D lighting treatment (4.62 vs. 6.92 and 6.57 kg, P < 0.05). The geese under 13L:11D lighting treatment had a shortest laying period in comparison with under 9L:15D and 11L:13D lighting treatment (90 vs. 177 and 107 d, P < 0.0001). The geese under 9L:15D lighting treatment produced more eggs than those under 11L:13D and 13L:11D lighting treatment (57.0 vs. 37.8 and 27.8 eggs/bird, P < 0.01). In conclusion, the increase lighting regime may induce shorter period of egg production in White Roman geese whereas the total number of eggs produced is lowered.
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