CC BY
15
STUDY ON RELATIONSHIP BETWEEN DIFFERENT HEAT MODE AND KIT SURVIVAL
ZHONG Wei, ZHAO Jingbo, LIU Baiyang, LIU Hanlu, SUN Weill, CHANG Zhongjuan, LI Guangyu Institute of Special Wild Economic Animals and Plant, CAAS, Jilin, China
The experiment studied the effect of different heat mode on the growth performance of kit at the age of seven-day old. The trial selected one-hundred fifty one-year old female mink with average body weight 1084.2±169.6g, randomly divided into five groups, thirty female mink within one group, control group (without heat and cage structure), trial group I (to heat 19°C at the bottom of nest), trial group II (to heat 15C at the bottom of nest), trial group III (to heat 10C at the bottom of cage structure), trial group IV (cage structure without
heating,<10C), respectively. The results indicated that at the parturition, it had an important effect of outside temperature on the survival of kit. It had no significant difference in litter of kit, survival kit in birth, survival rate of birth, survival kit within seven-day (P>0.1) in different group, but it had significantly different in survival rate of seven-day (P<0.01) and seven-day survival ate of I group was obviously higher than that of III group, while had no significant difference in every group, but higher than the other groups. The gestion day of III group was obviously longer than that of the other groups (P<0.01), while it had not significantly different in the other groups. The litter assembly in I and II group was significantly lower than that of the other groups. The litter dispersion in IV group was the lowest (4.55%) in all groups. The Kit-retrieval time in control group was the shortest (5.24 second) in all groups. In a word, the heat way at the bottom of nest exceed that of cage structure. When to heat 19°C at the bottom of nest, it was beneficial to kit survival.
