A Method for Estimating the Mineral Availability in Feedstuffs

Nwokolo, E.; Bragg, D. B.; Kitts, W. D.

doi:10.3382/ps.0552217

Cited by 30 publications

(16 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our values of availability of P from leguminous seeds were lower than found by Nvokolo et al (1976) in short-time digestibility trials with soyabean meal and other protein sources. Such discrepancies could be caused by very low Ca:P ratio in the individual feeds evaluated by these authors.…”

Section: Discussioncontrasting

confidence: 87%

Availability of phosphorus from field bean (Vicia faba) and lupin (Lupinus albus) seeds to broiler chickens

Antoniewicz¹,

Dumanska²,

Ombach³

1992

J. Anim. Feed Sci.

View full text Add to dashboard Cite

Experiment was conducted on 64 broiler chickens from 0 to 18 days of age to evaluate phosphorus availability from lupin and field bean. As indicators, bone mineralization and breaking strength and the retention of P fractions were used.Body weight at 18 days of life was reduced (P < 0.01) when P deficient semi-synthetic diet without inorganic P (PO) was fed. Femur ash content and tibia breaking strength were lowest and similar in chickens fed P-deficient (PO) and field bean containing (BPO) diets. Their femur ash content and tibia breaking strength were lower by about 12% (P^0.05) and 45% (P<0.01) than of chickens fed a diet with 0.2% of inorganic P (P2) which showed the best bone mineralization.Phosphorus was more available from lupin than from field bean (judged from breaking strength measurements: respectively 53 and 0% compared with inorganic P considered as 100% available). The results are discussed with respect to validity of the assays used and anti-nutritive factors in field bean.

show abstract

Section: Discussioncontrasting

confidence: 87%

Availability of phosphorus from field bean (Vicia faba) and lupin (Lupinus albus) seeds to broiler chickens

Antoniewicz¹,

Dumanska²,

Ombach³

1992

J. Anim. Feed Sci.

View full text Add to dashboard Cite

show abstract

“…In the present study, the maizeassay diet contained extremely low levels of calcium (0.30 g kg −1 ), which may have led to a high level of hydrolysis of phytate-P. It is Interesting that Nwokolo et al 16 have similarly reported high P availability estimates in experimental diets containing low calcium levels. Using diets containing 1.3-4.2 g kg −1 calcium, these researchers obtained high P availability values of 0.70-0.89 for several oilseed meals, including soybean meal.…”

Section: Discussionmentioning

confidence: 72%

Influence of exogenous enzyme supplementation on energy utilisation and nutrient digestibility of cereals for broilers

Ravindran

Hendriks

2004

J Sci Food Agric

View full text Add to dashboard Cite

The influence of a microbial phytase, produced by solid-state fermentation, on the apparent metabolisable energy and ileal digestibility of phosphorus, nitrogen and starch in sorghum, maize, wheat and barley was examined using 4-week-old broilers. For wheat and barley, the influence of phytase, individually or in combination with glycanases, was also evaluated. Microbial phytase improved (p < 0.05) apparent ileal phosphorus digestibility in all cereals. Phytase supplementation improved (p < 0.05) the apparent metabolisable energy of maize and barley by 2.6 and 7.8%, respectively. Numerical improvements in apparent metabolisable energy were observed in sorghum (1.9%) and wheat (2.1%), but were not statistically significant (p > 0.05). Further improvements (p < 0.05) in the apparent metabolisable energy of wheat and barley were observed when the phytase was combined with glycanases. However, the observed improvements in apparent metabolisable energy were not always associated with enhanced ileal digestibility of protein and starch.

show abstract

“…Guenter and Sell (1974), using intramuscular injection of 2 8 Mg reported an availability of 61.2% for magnesium in soybean meal. The availability of six minerals (Ca, P, Mg, Mn, Zn, and Cu) in palm kernel, soybean, cottonseed, and rapeseed meals was estimated by Nwokolo et al (1976). The average availability of minerals in this report varied from 50.5% (palm kernel meal) to 74.3% (soybean meal).…”

Section: Introductionmentioning

confidence: 98%

Biological Availability of Minerals in Rapeseed Meal

Nwokolo

Bragg

1980

Poultry Science

Self Cite

View full text Add to dashboard Cite

The variation in the mineral composition and availability of minerals to the chick from seven samples of rapeseed meal were studied. Results showed limited variation in the Ca, P, and Mg content with an average of .65%, 1.22%, and .50%, respectivley. However, the range of variation in Mn was from 49 to 67 mg/kg, Fe was 110 to 180 mg/kg, Cu was 10 to 33 mg/kg, and Zn was 49 to 64 mg/kg in the meals tested.Mineral availability results showed significant differences for each element (Ca, P, Mg, Mn, Cu, and Zn) between the seven rapeseed meals tested. Availability for Ca was 59.7 to 75.6%, P was 65.0 to 81.0%, Mg was 52.5 to 66.5%, Mn was 45.5 to 60.0%, Cu was 62.2 to 85.0%, and Zn was 23.0 to 57.6%. Span A rapeseed meal showed the lowest availability of all minerals tested except Cu, which was lowest in the commercial sample.1980 Poultry Science 59:155-158

show abstract

A Method for Estimating the Mineral Availability in Feedstuffs

Cited by 30 publications

References 22 publications

Availability of phosphorus from field bean (<i>Vicia faba</i>) and lupin (<i>Lupinus albus</i>) seeds to broiler chickens

Availability of phosphorus from field bean (<i>Vicia faba</i>) and lupin (<i>Lupinus albus</i>) seeds to broiler chickens

Influence of exogenous enzyme supplementation on energy utilisation and nutrient digestibility of cereals for broilers

Biological Availability of Minerals in Rapeseed Meal

Contact Info

Product

Resources

About