苜蓿粉含量对鹅日粮粗纤维和钙磷消化率的影响

为了探讨不同饲粮粗纤维(CF)水平对生长鹅饲料中各种纤维素和钙(Ca)、磷(P)消化率的影响,选取3月龄健康鹅48只,随机分为8组,每组6只,各试验组日粮中分别添加61.5,101.0,136.0,170.5,198.0,225.0,243.0和286.0g/kg苜蓿粉(CF依次为46.9,51.5,60.7,77.6,81.1,95.9,109.2和124.1g/kg),调整各组日粮至代谢能(ME)、粗蛋白(CP)、钙(Ca)、有效磷(AP)、蛋氨酸(Met)、赖氨酸(Lys)等水平基本一致。结果表明,在ME和CP等水平基本一致的条件下,苜蓿粉添加量在61.5~286.0g/kg(CF为46.9~124.1g/kg)时,CF的消化率为17.15%~25.35%,中性洗涤纤维(NDF)21.04%~30.71%,酸性洗涤纤维(ADF)19.10%~28.08%,半纤维素(HC)37.53%~72.67%;P表观消化率略有上升,但组间差异不显著(P>0.05);Ca表观消化率从苜蓿粉添加量为101.0g/kg时显著下降(P<0.05)。

Effects of the CF,calcium and phosphorus digesting rate in diets in goose of alfalf powder content

The trivial were conducted to determine the effects of dietary CF levels on the utilizations of fiber,Calcium and Phosphorusin growing Goose.Forty-eight healthy 3-month-old geese were divided into 8 groups (6 in each group).and were fed with diets which contained different alfalfa green hay powder proportions of 61.5,101.0,136.0,170.5,198.0,225.0,243.0 and 286.0 g/kg respectively(the CF were 46.9,51.5,60.7,77.6,81.1,95.9,109.2 and 124.1 g/kg in turn).The results indicated that:on the basis of the same CP,Ca,AP,Met,Lys,ME level,CF digestibility changed in the range of 17.15%-25.35%,NDF in 21.04%-30.71%,ADF in 19.10%-28.08% and HC in 37.53%-72.67%;There was no significant difference in the P apparent digestibility between the eight groups (P>0.05);the apparent digestibility of Ca in different groups detracted with the increasing level of alfalfa meal.