Effect of dietary particle size and carbohydrase and/or phytase supplementation on nitrogen and phosphorus excretion of grower pigs

被引:36
作者
Oryschak, MA
Simmins, PH
Zijlstra, RT
机构
[1] Prairie Swine Ctr Inc, Saskatoon, SK S7H 5N9, Canada
[2] Univ Saskatchewan, Dept Anim & Poultry Sci, Saskatoon, SK S7N 5A8, Canada
[3] Danisco Anim Nutr, Marlborough SN8 1AA, England
关键词
particle size; carbohydrase; phytase; pig; nitrogen; phosphorus;
D O I
10.4141/A02-016
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
The effect of dietary particle size and enzyme supplementation on N and P excretion were investigated in a 3 x 2 x 2 factorial arrangement, with three particle sizes (400, 700, or 850 mum), two levels of a carbohydrase cocktail [0 or 444 added units (U) beta-glucanase plus 1385 added U xylanase kg(-1) diet], and two levels of phytase (0 or 374 added U phytase kg(-1) diet), for a total of 12 dietary treatments. Diets (70% barley, 25% peas) were formulated to contain 3.25 Meal digestible energy (DE) kg(-1), 1.6 g digestible lysine Mcal(-I) DE, and 1.2 g kg(-1) available P. Sixty pigs (25.3 +/- 1.4 kg) had restricted access (3 x maintenance DE) to feed, and five individual pig observations for each of the 12 mash diets were obtained. Reducing particle size from 700 to 400 mum reduced total P excretion 12% and increased P digestibility and retention 15% (P < 0.05), while phytase reduced total P excretion 28% and increased P digestibility and retention 42% (P < 0.01). Reducing particle size from 850 and 700 to 400 mum decreased total N excretion 4 and 7%, respectively (P < 0.05). Carbohydrase did not affect P digestibility or excretion (P > 0.10), but increased digestibility of N and energy (P < 0.05). Carbohydrase interacted with particle size for energy digestibility (P < 0.01) and with phytase for N and energy digestibility (P < 0.05). Particle size affected N excretion and energy digestibility more than enzyme supplementation, while phytase affected P excretion more than particle size, suggesting that particle size reduction and phytase supplementation are effective to reduce nutrient excretion of grower pigs.
引用
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页码:533 / 540
页数:8
相关论文
共 37 条
[21]  
Mavromichalis I, 2000, J ANIM SCI, V78, P3086
[22]   EFFECTS OF GRINDING, PELLETING AND EXPANDING ON NUTRITIVE-VALUE OF BARLEY IN PIG DIETS [J].
NASI, M .
AGRICULTURAL SCIENCE IN FINLAND, 1992, 1 (05) :461-469
[23]  
*NAT RES COUNC, 1998, NUTR REQ SWEIN
[24]  
ORYSCHAK MA, 2002, THESIS U SASKATCHEWA
[25]   EFFECT OF SORGHUM PARTICLE-SIZE ON DIGESTIBILITY OF NUTRIENTS AT THE TERMINAL ILEUM AND OVER THE TOTAL DIGESTIVE-TRACT OF GROWING-FINISHING PIGS [J].
OWSLEY, WF ;
KNABE, DA ;
TANKSLEY, TD .
JOURNAL OF ANIMAL SCIENCE, 1981, 52 (03) :557-566
[26]  
PATIENCE JF, 1996, J ANIM PHYSIOL AN N, V75, P40
[27]  
*SAS I INC, 1996, SAS STAT US GUID REL
[28]  
SAUER WC, 1976, THESIS U MANITOBA WI
[29]  
SIMONSSON A, 1978, SWED J AGR RES, V8, P97
[30]  
SIMONSSON A, 1978, SWED J AGR RES, V8, P75