The development of automatic egg collection equipment and technology for laying ducks
This experiment was aimed to explore the effects of nest box type on egg production rate, floor-laying rate, broken egg rate and eggshell cleanness degree in Brown Tsaiya ducks. The nest boxes tested included metal wire (MW), wood cover with wire floor (WF) and wood cover with artificial turf floor (WA). Two hundred and forty 73-week-old Brown Tsaiya ducks were used. They were raised in a semi-open duck house and randomly assigned to three groups (MW, WF and WA, respectively). There were two replicate pens in each group with 40 ducks in each replicate pen. A bathing container and nipple drinkers were offered in the pen, and at night a 20-candle-light of fluorescent lamp was used. During the experiment feeds and water were under ad libitum. The results showed that the laying rate in each group was associated with the ducks’ feed intakes. No differences in egg weight and eggshell strength were observed among groups. Eggs laid on the floor decreased apparently with increased ducks’ ages, with group WF and group WA had lower floor-laying rate than that in the group MW. Regarding to eggshell quality, the nest boxes contributed to reduction of the broken rate, and significantly reduced the microorganisms on the eggshell surface.
Investigation of the optimal indoor feeding conditions for pekin ducks
The aim of this experiment was to evaluate the effects of water bath condition and feeding density in indoor duck house on performance of Pekin ducks. Pekin ducklings were raised in brooding house from hatch to 2 weeks old. Thereafter, ducks were randomly divided into indoor duck house. Test design was a factorial design of water bath condition (bath provided with supplemental water trough, no bath) and feeding density (0.5, 1 and 1.5 duck/m2). Each treatment group had three repeats. During the test growth performance, feather development and health parameters (feather hygiene, eyes and nostril hygiene) were measured. The results showed that Pekin ducks with supplemental water trough had higher body weight and feed consumption at all growth stages. The length of 8th primary feather were higher on ducks with supplemental water trough. In the impact of feeding density, ducks raised in 1 duck/m2 had better feed conversion ratio before 7 weeks of age. Furthermore, ducks with supplemental water trough had better health parameters at all growth stages.
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