太湖鹅、隆昌鹅及新太湖鹅生长规律研究

A Study on the Growth-development of LONGCHANG、 TAIHU and NEW TAIHU Goose

本研究用隆昌鹅、太湖鹅和新太湖鹅 (隆昌鹅作父本 ,太湖鹅作母本所培育的后代 )各 6 0只 ,在粗放条件下饲养到 70日龄 ,测定了三种鹅各周龄的体重及双周体尺 ,并用 Richards生长曲线方程拟合了鹅的生长规律。结果证明 :太湖鹅 4周龄左右为生长高峰 ,而隆昌鹅和新太湖鹅生长高峰周龄分别在 6周龄与 7周龄。新太湖鹅生长速度已基本接近隆昌鹅。Richards生长曲线方程能很好地拟合鹅的生长发育规律 ,拟合精度 (R2 )均大于 0 .9988。 6周龄是新太湖鹅骨骼、胸宽。

An experiment was carried out on body weight(everyweek) and size(biweekly) of Longchang、Taihu and New Taihu goose.New Taihu goose is the offspring of Longchang(male parent) and Taihu(female parent).All geese for measure were reared under similar conditions until 10 weeks.The results showed:growth peak of Taihu goose appears at the age of 4weeks,but the growth peaks of Longchang goose and New Taihu goose turn up at the age of 6 and 7 weeks respectively.Growth of New Taihu goose has virtually reached that of Longchang goose,which shows its good growing capability.Richards model can be used in describing growth development in three strains(R 2>0.998 8).New Taihu goose grows fastest at 6 weeks of age than other weeks in bone and breast width and depth.