EFFECT OF PELLETING MIXED FEEDS ON PHYTASE ACTIVITY AND THE APPARENT ABSORBABILITY OF PHOSPHORUS AND CALCIUM IN PIGS

被引:107
作者
JONGBLOED, AW
KEMME, PA
机构
[1] Research Institute for Livestock Feeding and Nutrition (I.V.V.O.), 8200 AD Lelystad
关键词
D O I
10.1016/0377-8401(90)90155-2
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
Six diets were used to determine the apparent absorbability of phosphorus (P), using total faeces collection, in pigs from 40 to 100 kg live weight. In diets containing a considerable phytase activity from feedstuffs such as wheat, wheat middlings or barley, steam pelleting at ∼ 80°C sometimes decreased the P and calcium (Ca) absorbability by 10 percentage units or more. This was mainly due to a considerable reduction of the phytase activity. Cold-pelleting such diets had no negative effect on the P absorbability or phytase activity. In diets without phytase activity, steam pelleting had no negative effect on P and Ca absorbability. The results indicate, that when the temperature of the pellets reaches ∼ 80°C, the concentration of absorbable P can be decreased substantially in feeds containing a high phytase activity. The type of diet and the conditions during pelleting are therefore decisive in determining P and Ca absorbability. © 1990.
引用
收藏
页码:233 / 242
页数:10
相关论文
共 16 条
[1]   INFLUENCE OF STEAM PELLETING AND DIETARY CALCIUM LEVEL ON UTILIZATION OF PHOSPHORUS BY PIG [J].
BAYLEY, HS ;
POS, J ;
THOMSON, RG .
JOURNAL OF ANIMAL SCIENCE, 1975, 40 (05) :857-863
[2]   PHOSPHORUS REQUIREMENTS OF GROWING PIGS AND EFFECT OF STEAM PELLETING ON PHOSPHORUS AVAILABILITY [J].
BAYLEY, HS ;
THOMSON, RG .
JOURNAL OF ANIMAL SCIENCE, 1969, 28 (04) :484-&
[3]   EFFECT OF STEAM PELLETING FEED INGREDIENTS ON CHICK PERFORMANCE - EFFECT OF PHOSPHORUS AVAILABILITY METABOLIZABLE ENERGY VALUE AND CARCASS COMPOSITION [J].
BAYLEY, HS ;
SUMMERS, JD ;
SLINGER, SJ .
POULTRY SCIENCE, 1968, 47 (04) :1140-&
[4]  
CORLEY J R, 1979, Journal of Animal Science, V49, P77
[5]  
HARMON BG, 1970, J ANIM SCI, V31, P202
[6]  
HARROLD RL, 1982, N DAK FARM RES, V40, P22
[7]  
JONGBLOED AW, 1987, IVVO179 REP
[8]   VARIATIONS IN CONCENTRATION OF PHYTIC ACID IN BLOOD OF DOMESTIC FOWL [J].
OSHIMA, M ;
TAYLOR, TG ;
WILLIAMS, A .
BIOCHEMICAL JOURNAL, 1964, 92 (01) :42-&
[9]   EFFECT OF STEAM PELLETING ON UTILIZATION OF PHOSPHORUS IN WHEAT BRAN [J].
SUMMERS, JD ;
PEPPER, WF ;
BAYLEY, HS ;
SLINGER, SJ .
POULTRY SCIENCE, 1968, 47 (05) :1397-&
[10]  
SUMMERS JD, 1967, CEREAL CHEM, V44, P318