哺乳期山羊日粮中的杏仁壳：对产奶量、奶成分、采食量和消化率的影响。

Almond hulls in diets for lactating goats: effects on yield and composition of milk, feed intake, and digestibility.

作者信息

Reed B A, Brown D L

机构信息

Department of Animal Science, University of California, Davis 95616.

出版信息

J Dairy Sci. 1988 Feb;71(2):530-3. doi: 10.3168/jds.S0022-0302(88)79585-5.

DOI:10.3168/jds.S0022-0302(88)79585-5

PMID:3379180

Abstract

Four cubed rations of similar chemical composition were fed ad libitum to 16 lactating yearling Alpine goats. The rations contained 0, 15, 25, and 35% almond hulls; 0, .5, 1, and 1% urea; and 58.4, 42.5, 32.0, and 22.0% alfalfa hay (DM basis). Chromic oxide was added as a digestibility marker. Average nutrient composition of diets was 91% DM, 20% CP, 32% NDF, 9% ash, and 4.39 Mcal gross energy/kg. Goats were randomly assigned to one of four diet orders in four replications of a 4 X 4 Latin square, blocked by goat and period. Data were collected in the 3rd wk of each period. Diets containing 25 and 35% almond hulls increased DM intake and reduced milk protein percent and digestibilities of DM, organic matter, ash, and NDF. Dry matter intake and weight gain were highest for the diet containing 35% almond hulls and 1% urea. Results indicate that almond hulls and urea can be fed to lactating goats up to these amounts without adversely affecting lactation.

摘要

将四种化学成分相似的日粮随意投喂给16只一岁产奶的阿尔卑斯山羊。日粮中分别含有0%、15%、25%和35%的杏仁壳；0%、0.5%、1%和1%的尿素；以及58.4%、42.5%、32.0%和22.0%的苜蓿干草（干物质基础）。添加氧化铬作为消化率标记物。日粮的平均营养成分是：91%干物质、20%粗蛋白、32%中性洗涤纤维、9%灰分和4.39兆卡总能/千克。山羊被随机分配到4×4拉丁方设计的四个日粮顺序之一，共四个重复，按山羊和时期进行区组。在每个时期的第3周收集数据。含有25%和35%杏仁壳的日粮增加了干物质摄入量，降低了乳蛋白百分比以及干物质、有机物、灰分和中性洗涤纤维的消化率。含有35%杏仁壳和1%尿素的日粮的干物质摄入量和体重增加最高。结果表明，在不影响泌乳的情况下，可向产奶山羊投喂上述数量的杏仁壳和尿素。