中国地方猪种体重生长的模式研究

用Gompertz模型对我国部分地方猪种体重的生长特性进行了模拟研究,结果表明:(1)体成熟速度顺序及K值为:华中型(金华、大花白、大围子)1.10、江海型(姜曲海、太湖)1.05、西南型(内江)0.78、华北型(八眉、民猪、河套大耳)0.70、长白0.67及华南型(香猪)0.49.(2)无论从体成熟速度、成熟体重,还是从生长拐点等来看,江海型猪都接近于华中型猪.(3)我国地方猪种的成熟体重普遍偏小,种猪多在65～130 kg,生长拐点体重多在30～50kg;生长肥育猪成熟体重多在90～150kg,拐点体重40～60kg,最大生长速度不超过500g/d.

STUDIES ON GROWTH PATTERNS OF BODY WEIGHT FOR LOCAL PIG BREEDS IN CHINA

The growth characteristics of body weigt for some Chinese local pig breede were studied by the use of Gompertz model.(1)Body maturing rate and K values decreased by the order-central China type (Jinhua,Large Black-White,Danxizi)1.10,lower Gltangjiang River basin type(pangquhai,taihu)1.05 southwest type(Neijiang)0.73,north China type (Bamei,Min Pig,Hetaodaer)0.07,Landrace 0.67 and south China type(Xiang pig)0.99.(2) Based on maturing rate,mature body weight and the point of inflection, lower Changjiang River basin type was similar to central China type.(3)The mature body weigt of the Chinese local pig breeds were relatively small.the body weigthts at maturity and at the point of inflection were generally 65-130 kg and 30-50 kg resp.for breeding pigs, and 90-150 kg and 90-60 kg resp.for growing-fattening pigs.Maximum growth rate was smaller than 500 grams per day.