Determining the optimal lysine to calorie ratio for growth performance of 20- to 50-lb genetiporc nursery pigs
dc.citation.epage | 125 | en_US |
dc.citation.spage | 118 | en_US |
dc.contributor.author | Schneider, J.D. | |
dc.contributor.author | Tokach, Michael D. | |
dc.contributor.author | Goodband, Robert D. | |
dc.contributor.author | Nelssen, Jim L. | |
dc.contributor.author | DeRouchey, Joel M. | |
dc.contributor.author | Dritz, Steven S. | |
dc.contributor.authoreid | mtokach | en_US |
dc.contributor.authoreid | dritz | en_US |
dc.contributor.authoreid | goodband | en_US |
dc.contributor.authoreid | jnelssen | en_US |
dc.contributor.authoreid | jderouch | en_US |
dc.date.accessioned | 2009-10-20T18:40:17Z | |
dc.date.available | 2009-10-20T18:40:17Z | |
dc.date.issued | 2009-10-20T18:40:17Z | |
dc.date.published | 2004 | en_US |
dc.description.abstract | Two studies were conducted to evaluate the effects of increasing dietary lysine and energy density on nursery-pig performance. Exp. 1 was organized as a combination of two simultaneous experiments, with one set of diets consisting of five treatments with increasing TID lysine (0.99, 1.07, 1.14, 1.22, and 1.30%) concentrations, and the second set of diets consisting of five treatments with increasing energy density (1342, 1406, 1471, 1535, and 1600 kcal/lb). The highest l of both lysine and energy density (1.30% and 1600 kcal/lb, respectively) were combined as one diet and used in both the lysine and energy-density titrations to give a total of 10 treatments. Pigs were randomly allotted to 8 replications with 5 pigs per pen on the basis of BW. Overall (d 0 to 21) in Exp. 1 increasing true-ileal-digestible (TID) lysine increased ADG linearly and improved feed efficiency. Although increasing energy density had no effect on ADG, ADFI decreased, which resulted in a quadratic improvement in F/G. Regression analysis of the response surface was used to predict the optimal lysine-to-calorie ratio of 3.65 to 3.71 g lysine/Mcal ME for the Gentiporc pigs used in this experiment. In Exp 2, pigs were fed diets with two different energy densities (1.34 or 1.49 Mcal ME/lb) with TID lysine-to-calorie ratios ranging from 3.1 to 4.1 g/Mcal ME. There was an energy density by TID lysine-tocalorie ratio interaction observed for ADG. Pigs fed the low-energy diets had the greatest ADG at a lysine-to-calorie ratio of 3.60. For pigs fed the high energy diets, ADG improved as the lysine-to-calorie ratio improved to 3.36 g of TID lysine/Mcal ME. There was a quadratic improvement in feed efficiency as the lysine-to-calorie ratios were increased for the pigs fed the low-energy diet, with the best F/G value observed at 3.87; but the pigs fed the high-energy diets had a linear improvement in F/G as the lysine-to-calorie ratios were increased. Although there was a linear improvement in F/G for the high-energy diet, little improvement in feed efficiency was observed when the lysine-to-calorie ratio was increased from 3.36 to 4.07. On the basis of these results, we suggest that the optimal lysine-to-calorie ratio is 3.30 to 3.87 g of TID lysine/Mcal ME for 20- to 50-lb Genetiporc pigs in these facilities. | en_US |
dc.description.conference | Swine Day, 2004, Kansas State University, Manhattan, KS, 2004 | en_US |
dc.identifier.uri | http://hdl.handle.net/2097/1897 | |
dc.publisher | Kansas State University. Agricultural Experiment Station and Cooperative Extension Service | en_US |
dc.relation.isPartOf | Swine day, 2004 | en_US |
dc.relation.isPartOf | Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 940 | en_US |
dc.relation.isPartOf | Kansas Agricultural Experiment Station contribution ; no. 05-113-S | en_US |
dc.subject | Lysine | en_US |
dc.subject | Energy | en_US |
dc.subject | Nursery pigs | en_US |
dc.subject | Pigs | en_US |
dc.subject | Swine | en_US |
dc.title | Determining the optimal lysine to calorie ratio for growth performance of 20- to 50-lb genetiporc nursery pigs | en_US |
dc.type | Conference paper | en_US |
Files
Original bundle
1 - 1 of 1
Loading...
- Name:
- Determing the Optimal Lysine to Calorie Ratio for Growth Performance of 20 to 50 Lb Genetiporc Nursery Pigs- Swine Day 2004.pdf
- Size:
- 35.59 KB
- Format:
- Adobe Portable Document Format
License bundle
1 - 1 of 1
No Thumbnail Available
- Name:
- license.txt
- Size:
- 1.69 KB
- Format:
- Item-specific license agreed upon to submission
- Description: