[Objective] This paper was to establish a method for quality assessment of Suyou Ⅰ duck. [Method] Semen was collected from 20 healthy drakes using back massage method,to determine semen volume,sperm motility,sperm de...[Objective] This paper was to establish a method for quality assessment of Suyou Ⅰ duck. [Method] Semen was collected from 20 healthy drakes using back massage method,to determine semen volume,sperm motility,sperm density,sperm morphology and semen quality factor( SQF) of each individual.[Result]Semen was successfully collected from 15 out of 20 ducks. The results of semen quality assessment showed that the semen volume,sperm density,sperm motility,normal morphology ratio and SQF were( 0. 17 ± 0. 05) mL,( 25. 52 ± 4. 73) × 10~8 sperm/mL,( 0. 86 ± 0. 10),( 86. 93 ± 2. 13) % and( 387. 5 ±129. 25),respectively. The abnormal sperm ratio was( 13. 07 ±2. 13) %,among which the percentages of bent sperm,huge head sperm and damaged sperm were( 7. 70 ± 1. 97) %,( 2. 53 ± 1. 06) % and( 2. 83 ± 0. 79) %,respectively. [Conclusion]Semen quality of Suyou Ⅰ duck is generally high,and could be applied in the production and breeding.展开更多
[ Objective ] The paper was to study the effects of green forage on production performance and egg quality of laying ducks. [ Method] According to one- factor randomized complete experimental design, 200 healthy Suyou...[ Objective ] The paper was to study the effects of green forage on production performance and egg quality of laying ducks. [ Method] According to one- factor randomized complete experimental design, 200 healthy Suyou No. 1 laying ducks aged 200 days were randomly divided into five groups, four repeats each group, and each repeat contained 10 laying ducks. Parts of formulated feed in groups I - IV were replaced with different types and quantities of green forage, and group V was set as control. The trim lasted for 42 d. [ Result] Replacing parts of formulated feed with green forage could improve the production performance of laying ducks （P 〉 0.05 ）, and the economic benefits also increased. For egg quality, Haugh unit was improved （ P 〉 0.05 ） ; yolk color increased significantly ; compared to control group, yolk color was significantly increased in groups with 100 g chicory and 70 g clover （P 〈0.05 ）, and was extremely increased in the group with 100 g clover （P 〈0.01 ）. [ Conclusion] The group with 100 g chicory had the best effect on production performance of laying ducks, and the group with 100 g clover had the best coloring effect on yolk.展开更多
基金Supported by Key Technology R&D Program of Jiangsu Province(BE2014362)Science and Technology Plant of Yangzhou City(YZ2015039)
文摘[Objective] This paper was to establish a method for quality assessment of Suyou Ⅰ duck. [Method] Semen was collected from 20 healthy drakes using back massage method,to determine semen volume,sperm motility,sperm density,sperm morphology and semen quality factor( SQF) of each individual.[Result]Semen was successfully collected from 15 out of 20 ducks. The results of semen quality assessment showed that the semen volume,sperm density,sperm motility,normal morphology ratio and SQF were( 0. 17 ± 0. 05) mL,( 25. 52 ± 4. 73) × 10~8 sperm/mL,( 0. 86 ± 0. 10),( 86. 93 ± 2. 13) % and( 387. 5 ±129. 25),respectively. The abnormal sperm ratio was( 13. 07 ±2. 13) %,among which the percentages of bent sperm,huge head sperm and damaged sperm were( 7. 70 ± 1. 97) %,( 2. 53 ± 1. 06) % and( 2. 83 ± 0. 79) %,respectively. [Conclusion]Semen quality of Suyou Ⅰ duck is generally high,and could be applied in the production and breeding.
基金Supported by Practice and Innovation Training Program for College Students in Jiangsu Province(SJG(2011)No.25)
文摘[ Objective ] The paper was to study the effects of green forage on production performance and egg quality of laying ducks. [ Method] According to one- factor randomized complete experimental design, 200 healthy Suyou No. 1 laying ducks aged 200 days were randomly divided into five groups, four repeats each group, and each repeat contained 10 laying ducks. Parts of formulated feed in groups I - IV were replaced with different types and quantities of green forage, and group V was set as control. The trim lasted for 42 d. [ Result] Replacing parts of formulated feed with green forage could improve the production performance of laying ducks （P 〉 0.05 ）, and the economic benefits also increased. For egg quality, Haugh unit was improved （ P 〉 0.05 ） ; yolk color increased significantly ; compared to control group, yolk color was significantly increased in groups with 100 g chicory and 70 g clover （P 〈0.05 ）, and was extremely increased in the group with 100 g clover （P 〈0.01 ）. [ Conclusion] The group with 100 g chicory had the best effect on production performance of laying ducks, and the group with 100 g clover had the best coloring effect on yolk.
