Live Body Weight Changes in Formosan Sika Deer During Nursing Stage and it’s Relation to Timing of Weaned.

in International Symposium (oral presentation paper), 國際研討會(全文口頭發表)
標題Live Body Weight Changes in Formosan Sika Deer During Nursing Stage and it’s Relation to Timing of Weaned.
AuthorsShyh-Shyan Liu, 劉世賢

Live body weight(LBW) of 7 farmed multiparous Formosan sika deer(Cervus nippon taiouanus) dams and their fawns, fed ad libitum, were measured in southern Taiwan(22.5°N) every 2 weeks during the 0(the calving day) to 14th week of nursing stage. Changes of LBW in the dams and the fawns were clearly opposed to each other in the experimental period (r2 = 0.4392, P = 0.0733). Trending downwards of the LBW values in the dams continued until the 10th week of the lactation stage, however, they were kept upwards in the fawns throughout the experimental period(r2 = 0.9965, P<0.01), so that a significantly negative relationship between the LBW changes of the two groups during the anterior 10 weeks in the nursing stage(r2 = 0.9422, P<0.01) was revealed. Birth weight of the neonates was Avg. 3.16 Kg, they began to consume solid rations at 5.7 weeks in age. Although there was no significant relationship between the LBW values in the fawns at 10th week in age and the amount of LBW decreased during the same period in the dams(r2 = 0.1382, P>0.05), the relationship between the LBW of the fawns at birth and that of the 10th week in age was positively significant(r2 = 0.6475, P = 0.0535). It is concluded that the Formosan sika deer dams lost their LBW during the first 10 weeks of the lactation stage but wined it slowly in the left period of the nursing stage, while LBW of the fawns increased continuously throughout the nursing stage. Results suggested that the Formosan sika deer fawns could be safely weaned at the age of 10th week, furthermore, the more of LBW in the fawns at birth, the relatively heavy LBW they were at the time of weaned.

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