Effect of spray-dried blood meal in the phase III diet

Date

2010-04-02T17:06:01Z

Journal Title

Journal ISSN

Volume Title

Publisher

Kansas State University. Agricultural Experiment Station and Cooperative Extension Service

Abstract

A total of 216 weanling pigs was used to evaluate the use of spray-dried blood meal (SDBM) in the phase III diet for pigs weighing approximately 25 pounds. At weaning, pigs (initially 11.6 lb and 21 d of age) were allotted by weight, gender, and ancestry to the dietary treatments. There were six pigs per pen with six replications per treatment. Pigs were started on a common phase I diet containing 20% dried whey, 7.5% spray-dried porcine plasma, and 1.75% spray-dried blood meal. This diet was formulated to contain 1.5% lysine and .44% methionine. On d 7 postweaning all pigs were switched to a common phase II diet that contained 10% dried whey and 2.5% spray-dried blood meal and was formulated to contain 1.25% lysine and .35% methionine. On d 21 postweaning and when weight averaged approximately 25 pounds, pigs were switched to one of six diets, control or containing .5, 1.0, 1.5, 2.0, or 2.5% spray-dried blood meal, that were formulated to contain 1.15% lysine. Pigs were fed experimental diets from d 21 to 42 postweaning (phase III). During phase I, average daily gain (ADG), average daily feed intake (ADFI), and feed efficiency (F/G) were .54 lb, .61 lb, and 1.16, respectively. During phase II, ADG, ADFI, and F/G were .62 lb, 1.15 lb, and 1.90, respectively. On d 21, pigs weighed an average of 24 pounds when they were switched to the experimental diets. During phase III, linear (P < .05) depressions in ADG and F/G occurred with the addition of increasing levels of spray-dried blood meal in the diet. However, the reduction in performance was only evident at the 2 and 2.5% blood meal levels. Lower blood meal additions to the diet (< 2%) had no influence on pig performance. Similar to earlier research, our results indicate that complex protein sources are not required in the phase III diet for optimal pig performance.

Description

Keywords

Swine, Blood meal, Starter pigs, Performance

Citation

Collections