圈养西太平洋斑海豹幼崽体重动态及转饵适应性OA

This experiment was conducted to explore the weight dynamic and diet transition adaption of neonatal Western Pacific spotted seal pups from birth to the completion of diet transition,clarify their growth characteristics during critical growth periods,and provide a scientific basis for the artificial rearing,early health warning and scientific diet transition of spotted seal pups.Four neonatal spotted seal pups born in 2026 at Qingdao Aquarium were used as experimental subjects.Daily weight was continuously monitored from birth to the completion of diet transition,daily food intake during the diet transition period was recorded,and the dynamic changes in weight during the lactation and diet transition periods were analyzed.The results showed that the birth weight of pups ranged from 9.8 to 11.2 kg;the lactation period lasted 17-20 days with an average daily weight gain of 1.11-1.32 kg,and body weight exhibited an extremely significant linear increase(P<0.01).The diet transition period lasted 9-20 days,with a maximum weight loss of 8.0%-15.2%during transition,and the body weight at the completion of transition was lower than the weaning weight.Daily food intake was extremely significantly positively correlated with daily weight gain(R²=0.681,P<0.01),and the critical daily food intake for weight balance was 0.9 kg.Significant individual differences were observed in pups with higher birth weight and faster weight gain during lactation,which had stronger adaptability to artificial diets,less weight loss and faster recovery during the diet transition period.