dc.contributor.author |
Goodband, Robert D. |
|
dc.contributor.author |
Langbein, Kari Beth |
|
dc.contributor.author |
Tokach, Michael D. |
|
dc.contributor.author |
DeRouchey, Joel M. |
|
dc.contributor.author |
Dritz, Steven S. |
|
dc.date.accessioned |
2014-04-28T15:19:56Z |
|
dc.date.available |
2014-04-28T15:19:56Z |
|
dc.date.issued |
2014-04-28 |
|
dc.identifier.uri |
http://hdl.handle.net/2097/17613 |
|
dc.description.abstract |
A total of 1,188 finishing pigs (PIC 337 × 1050, initially 80.1 lb) were used in a 92-d
experiment to determine the influence of providing phytase above that needed to
meet the P requirement for growth performance and carcass characteristics. There
were 27 pigs per pen and 11 pens per treatment. Each pen contained a similar number
of barrows and gilts. Pens were randomly assigned to treatment based on initial BW.
Basal diets contained corn, soybean meal, dried distillers grains with solubles (DDGS),
and bakery meal and were formulated to meet or exceed the nutrient requirements of
the pigs in each of the four phases. The four dietary treatments were formed by adding
increasing levels of phytase (Optiphos 2000, Enzyvia LLC) at 0.25 (control), 0.5, 1.0
and 2.0 lb/ton. Diets were formulated such that the addition of the first 0.25 lb/ton
of phytase was needed to meet the P requirement of the pigs, with further additions
exceeding the P requirement. Pigs were weighed and feed disappearance was determined
approximately every 14 d to determine ADG, ADFI, and F/G. On d 92, pigs were
tattooed by pen number and harvested to collect carcass data.
Overall (d 0 to 92), increasing dietary phytase did not influence ADG but reduced
(cubic, P < 0.01) ADFI, resulting in an improvement in F/G (cubic, P < 0.01). The
cubic response occurred because F/G improved as phytase inclusion increased from
0.25 to 0.5 lb/ton, with no further improvement when phytase was increased to 1.0 or
2.0 lb/ton. Phytase addition to the diet did not influence carcass measurements. These
results suggest that providing phytase at levels above that needed to meet the pig’s
requirement for P has the potential to improve feed efficiency. |
en_US |
dc.language.iso |
en_US |
en_US |
dc.publisher |
Kansas State University. Agricultural Experiment Station and Cooperative Extension Service |
en_US |
dc.relation.isPartOf |
Swine day, 2013 |
en_US |
dc.relation.isPartOf |
Kansas Agricultural Experiment Station contribution; no. 14-044-S |
en_US |
dc.relation.isPartOf |
Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 1092 |
en_US |
dc.subject |
Finishing pig |
en_US |
dc.subject |
Phosphorus |
en_US |
dc.subject |
Phytase |
en_US |
dc.title |
Influence of a superdose of phytase (Optiphos) on finishing pig performance and carcass characteristics |
en_US |
dc.type |
Conference paper |
en_US |
dc.date.published |
2013 |
en_US |
dc.citation.epage |
120 |
en_US |
dc.citation.spage |
116 |
en_US |
dc.description.conference |
Swine Day, Manhattan, KS, November 21, 2013 |
en_US |
dc.contributor.authoreid |
goodband |
en_US |
dc.contributor.authoreid |
mtokach |
en_US |
dc.contributor.authoreid |
dritz |
en_US |
dc.contributor.authoreid |
jderouch |
en_US |