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Akademický článek

Effect of High Phytase Inclusion Rates on Performance of Broilers Fed Diets Not Severely Limited in Available Phosphorus

Autor: T. T. dos Santos, S. Srinongkote, M. R. Bedford, C. L. Walk

Publikováno v: Asian-Australasian Journal of Animal Sciences, Vol 26, Iss 2, Pp 227-232 (2013)

Phytate is not only an unavailable source of phosphorus (P) for broilers but it also acts as an anti-nutrient, reducing protein and mineral absorption, increasing endogenous losses and reducing broiler performance. The objective of this study was to

Externí odkaz: https://doaj.org/article/633cb0b8774c4214859b1c26502c2042

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Effects of dietary digestible calcium on growth performance and bone ash concentration in 50- to 85-kg growing pigs fed diets with different concentrations of digestible phosphorus

Autor: Michael R. Murphy, C. L. Walk, L.V. Lagos, Hans H Stein

Publikováno v: Animal Feed Science and Technology. 247:262-272

A 30-day experiment was conducted to determine the response of 50–85 kg pigs to standardized total tract digestible (STTD) Ca at 3 levels of STTD P. Fifteen corn-soybean meal based diets were formulated using a 3 × 5 factorial design with diets co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a3f6be478475474089289cd77de16c00
https://doi.org/10.1016/j.anifeedsci.2018.11.019

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Effects of microbial phytase on mucin synthesis, gastric protein hydrolysis, and degradation of phytate along the gastrointestinal tract of growing pigs1

Autor: L Vanessa Lagos, C. L. Walk, Hans H Stein, Von G R Mesina, Rommel C. Sulabo

Publikováno v: Journal of Animal Science. 97:756-767

An experiment was conducted to test the hypothesis that pigs fed diets supplemented with exogenous phytase reduce mucin synthesis in the small intestine, increase protein hydrolysis in the stomach, increase breakdown of phytate along the gastrointest

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dcb5255e7c1bbc9ad93aafb98aca52e4
https://doi.org/10.1093/jas/sky439

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Inclusion of excess dietary calcium in diets for 100- to 130-kg growing pigs reduces feed intake and daily gain if dietary phosphorus is at or below the requirement1

Autor: C. L. Walk, Carl M Parsons, L. A. Merriman, Hans H Stein, Michael R. Murphy

Publikováno v: Journal of Animal Science. 95:5439-5446

An experiment was conducted to test the hypothesis that the requirement for standardized total tract digestible (STTD) Ca by pigs from 100 to 130 kg depends on the concentration of STTD P in the diet. Ninety pigs (average initial BW: 99.89 ± 3.34 kg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f773308a61b0811e7f0e48afb19cbf77
https://doi.org/10.2527/jas2017.1995

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PSIII-18 Standardized total tract digestibility of Ca by growing pigs in different sources of calcium carbonate and dicalcium phosphate

Autor: C. L. Walk, Su A Lee, Hans H Stein

Publikováno v: J Anim Sci

The objective was to test the hypothesis that standardized total tract digestibility (STTD) of Ca and the response to microbial phytase is constant among different sources of calcium carbonate and different sources of dicalcium phosphate (DCP). In Ex

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c21b17b346b36d708419e5593716be8
https://europepmc.org/articles/PMC6666866/

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Influence of the concentration of dietary digestible calcium on growth performance, bone mineralization, plasma calcium, and abundance of genes involved in intestinal absorption of calcium in pigs from 11 to 22 kg fed diets with different concentrations of digestible phosphorus

Autor: C. L. Walk, Michael R. Murphy, Guillermo Fondevila, L Vanessa Lagos, Hans H Stein, Su A Lee, Juan J. Loor

Publikováno v: Journal of Animal Science and Biotechnology, Vol 10, Iss 1, Pp 1-16 (2019)
Journal of Animal Science and Biotechnology

Background A 21-day experiment was conducted to test the hypothesis that Ca requirements to maximize growth performance expressed as the standardized total tract digestible (STTD) Ca to STTD P ratio is less than 1.40:1. The second hypothesis was that

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2461b51635fda93856a1b1f4c327c00
https://doi.org/10.1186/s40104-019-0349-2

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Requirement for digestible calcium by 25 to 50 kg pigs at different dietary concentrations of phosphorus as indicated by growth performance, bone ash concentration, and calcium and phosphorus balances1

Autor: C. L. Walk, J. C. González-Vega, Michael R. Murphy, Hans H Stein

Publikováno v: Journal of Animal Science. 94:5272-5285

Two experiments were conducted to determine the requirement for standardized total tract digestible (STTD) Ca by 25 to 50 kg pigs at different concentrations of STTD P. Twenty corn-soybean meal based diets were formulated with diets containing 4 conc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d77713acb77d9eadb3c23d71920d1eaf
https://doi.org/10.2527/jas.2016-0751

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Effects of tallow, choice white grease, palm oil, corn oil, or soybean oil on apparent total tract digestibility of minerals in diets fed to growing pigs1

Autor: C. L. Walk, L. A. Merriman, Carl M Parsons, Hans H Stein

Publikováno v: Journal of Animal Science. 94:4231-4238

An experiment was conducted to determine the effect of supplementing diets fed to growing pigs with fat sources differing in their composition of fatty acids on the apparent total tract digestibility (ATTD) of minerals. A diet based on corn, potato p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::066a434007faab18cf0c5dfce181c722
https://doi.org/10.2527/jas.2016-0682

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