scholarly journals Effects of supplemental phytase on nutrient excretion and retention in broilers fed different cereal based diets

2011 ◽  
Vol 50 (No. 1) ◽  
pp. 40-46 ◽  
Author(s):  
J. Pintar ◽  
B. Homen ◽  
K. Gazić ◽  
Z. Janječić ◽  
M. Sikirić ◽  
...  

A 21-day experiment with day-old broilers was conducted in order to assess the effect of phytase supplementation to different cereals-soybean meal based diets on nitrogen, calcium, total and phytate phosphorus excretion and retention. Diets were formulated to contain 4 different cereals (maize, wheat, triticale and barley), 2 levels of dietary calcium (0.6 and 1.0%) and 3 levels of supplemental phytase (0, 500 and 1 000 PU/kg). Nutrient intake, excretion and retention were determined in the first three days of the 2nd and 3rd week of trial. The increasing phytase level resulted in reducing phytate phosphorus excretion and increasing its retention. Significant differences were obtained only in the 2nd week (excretion P < 0.024 and retention P < 0.044). Phytase supplementation significantly influenced total phosphorus excretion in the 3rd week (P < 0.048) and retention in the 2nd week (P < 0.015). The effects of 500 and 1 000 PU/kg were not statistically different from each other. No significant influence of phytase supplementation on nitrogen and calcium excretion and retention was observed.  

1993 ◽  
Vol 71 (12) ◽  
pp. 3368-3375 ◽  
Author(s):  
X. G. Lei ◽  
P. K. Ku ◽  
E. R. Miller ◽  
M. T. Yokoyama ◽  
D. E. Ullrey

animal ◽  
2018 ◽  
Vol 12 (4) ◽  
pp. 733-740 ◽  
Author(s):  
A. ZeidAli-Nejad ◽  
G.R. Ghorbani ◽  
S. Kargar ◽  
A. Sadeghi-Sefidmazgi ◽  
A. Pezeshki ◽  
...  

2013 ◽  
Vol 33 (5) ◽  
pp. 352 ◽  
Author(s):  
L.K. Warren ◽  
J.M. Weir ◽  
P.A. Harris ◽  
J. Kivipelto

1946 ◽  
Vol 36 (4) ◽  
pp. 283-288 ◽  
Author(s):  
Cyril Tyler

1. The daily retention of calcium, carbonate, phosphorus and chloride was studied using four birds and changing the calcium carbonate content of the ration every 5 days for 15 days.2. It was shown that high calcium diets result in a much lower retention of calcium and thin-shelled eggs are produced.3. Retention of calcium was higher in the laying than in the non-laying bird when calcium carbonate was fed.4. High calcium diets depressed the retention of phosphorus, and in one case the retention was negative, even when no eggs were laid. Laying birds gave negative values for retention because of the heavy phosphorus excretion associated with egg laying.5. High calcium diets also depressed the retention of chloride, and on occasion led to negative retention values.


2020 ◽  
Vol 840 ◽  
pp. 107-112
Author(s):  
Fajar Ajimukti Atmojo ◽  
Bambang Suhartanto ◽  
Insani Hubi Zulfa ◽  
Kustantinah Kustantinah

Twenty goats were given a basal feed of Pennisetumpurpureum cv Mott (odot grass) and supplemented with protein-based feed ingredients namely calliandracalothyrsus and soybeanmeal (SBM). The proportion of calliandra feed substitution and soybeanmeal is T1 = odot grass (ad libitum) + 100% soybeanmeal; T2 = odot grass (ad libitum) + 25% calliandra + 75% soybeanmeal; T3 = odot grass (ad libitum) + 50% calliandra + 50% soybeanmeal; T4 = odot grass (ad libitum) + 75% calliandra + 25% soybeanmeal; and T5 = odot grass (ad libitum) + 100% calliandra. The amount of feed supplementation given is based on daily protein requirements (gram/DM) per day according to animal body weight. The feed given contained iso protein (CP) and iso energy (TDN) to determine the effect of substitution of soybeanmeal with calliandra The parameters observed were intake and nutrient digestibility of feed. Data obtained from the results of the study analyzed variance using a one-way analysis of variance, then if the results show significant differences, it will be analyzed further with Duncan's new multiple range test. The results showed that substitution of calliandra did not have a significant effect (P> 0.05) on nutrient intake (g/kg BB0,75/day), except for intake of ETN, it shows a significant effect (P< 0.05). Calliandra substitution had a significant effect (P<0.05) on feed nutrient digestibility, with the highest digestibility being T2 treatment (25% calliandra substitution).


1981 ◽  
Vol 15 (4) ◽  
pp. 299-303 ◽  
Author(s):  
A. Wise ◽  
D. J. Gilburt

29 laboratory animal diets from 5 manufacturers for rats, mice, rabbits, guineapigs, primates and dogs were analysed for calcium, total phosphorus, phytate phosphorus, magnesium, sodium, potassium, iron, zinc and copper. Variations between diets for the same species were found to be much larger than differences between means for different species. The analyses were compared with data in the manufacturers' catalogues. The best controlled element was potassium. Most deviations of other elements were distributed in a skewed fashion and quite serious differences between analytical and catalogue data were found. In general, deviations from the catalogue were less than variations between diets. It is recommended that catalogues should give ranges of composition rather than means.


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