EFFECTS OF SULFATE SUPPLEMENTATION ON PERFORMANCE, ACID-BASE-BALANCE, AND NUTRIENT METABOLISM IN ALPINE KIDS

被引：5

作者：

QI, K ^{[1
]}

LU, CD ^{[1
]}

OWENS, FN ^{[1
]}

机构：

[1] LANGSTON UNIV,AGR RES PROGRAM,LANGSTON,OK 73050

来源：

SMALL RUMINANT RESEARCH | 1994年 / 15卷 / 01期

关键词：

GOAT; SULFUR; GROWTH; ALPINE; NUTRIENT METABOLISM;

D O I：

10.1016/0921-4488(94)90054-X

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

Twenty Alpine goat kids (BW: mean +/- SE = 23.70 +/- 0.99 kg; castrated males) were individually fed isonitrogenous and isocaloric diets containing 2.28% N, and 0.11 (basal), 0.20, 0.28 or 0.38% S (added as CaSO4) of dietary DM. Sulfate supplementation during the 8-wk growth trial tended to increase (quadratic, P < 0.20) average daily gain (ADG), DM intake (DMI) and feed efficiency (FE, ADG/DMI), also tended to increase (quadratic, P < 0.20) plasma concentrations of HCO3-, total CO2, urinary creatinine output, and increased (quadratic, P < 0.05) urinary uric acid output. However, sulfate supplementation did not affect (P > 0.20) plasma sulfate, plasma cyst(e)ine, ruminal NH3-N concentrations and purine N content of isolated ruminal bacteria. Sulfate supplementation increased plasma glucose (linear, P < 0.10), rumen sulfate-S (linear, P < 0.01) and ruminal sulfide-S (quadratic, P < 0.05) concentrations. Sulfur (linear, P < 0.001) and N retention (quadratic, P < 0.05) increased with sulfate supplementation. Calculated by regression, optimal dietary S content for ADG was 0.21% S (N/S = 10.9:1). This result substantiates the NRC (1981) recommendation of S requirements of goats for growth (N/S = 10:1).

引用

页码：9 / 18

页数：10

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