Abstract:

The objective of this study was to investigate effect of spraying on cashmere performance and physicochemical properties in goslings.A total of 300 5-week-old healthy male Yangzhou geese with similar body weight were randomly allocated into 5 groups with 5 replicates per group and 12 geese per replicate.Five groups including the control group，groupⅠ，groupⅡ，groupⅢ and groupⅣ.It was no spraying in control group，spraying method in groupⅠ，with 3 times a day，each time spraying 5 minutes first，10 minutes intermission later，re-spray 5 minutes，groupⅡ was 3 times a day too，spraying method was to spray continuous 10 minutes at a time，groupⅢ was 3 times a day，each time spraying 15 minutes first，10 minutes intermission later，re-spray 15 minutes，groupⅣ was 3 times a day too，spraying method was to spray continuous 30 minutes at a time.The experiment lasted for 6 weeks.The results showed that(1)GroupⅢ and groupⅣ were extremely significant higher than the other groups in kilo-down weight and down length which in the chest，abdomen，back and neck of Yangzhou geese on 70-day-old (P<0.01)，groupⅠ and groupⅡ were extremely significant higher than the control group in kilo-down weight and down length which in the chest，abdomen，back and neck of Yangzhou geese on 70-day-old (P<0.01).There was no significant difference in down twig diameter which in the same place among all groups.GroupⅢ and groupⅣ had the highest down percentage，groupⅠand groupⅡ followed，the control group was the worst.In addition，looking one of all the groups，the kilo-down weight，down length and down twig diameter of chest and abdomen of Yangzhou geese on 70-day-old were extremely significant higher than that of other positions (P<0.01).(2)Compared with the control group，the other groups significantly (P<0.05) or extreme significantly(P<0.01) increased the fat content，transparency and filling power of down in Yangzhou geese on 70-day-old.GroupⅢ and groupⅣ had the lowest oxygen consumption index，which were extremely significant lower than the other groups(P<0.01)，groupⅠand groupⅡ were extremely significant lower than that of control group(P<0.01).Spraying with the same time，groupⅠ significantly increased the transparency，filling power and oxygen consumption index than that of groupⅡ(P<0.05).So，spraying can significantly increase cashmere performance and physicochemical properties of goslings，thereby improve the quality of gosling down.