PMID: 7085516Mar 1, 1982Paper

Restricted energy intake and elevated calcium and phosphorus intake for gilts during growth. I. Feedlot performance and foot and leg measurements and scores during growth

Journal of Animal Science
D F CalabottaH P Veit


Three groups of 96 crossbred gilts each were weaned at 4 to 5 wk of age (avg wt, 7.2 kg) and assigned to four treatments in a 2 X 2 factorial arrangement (ad libitum vs 75% of ad libitum energy intake and 100 vs 150% of NRC-recommended daily Ca and P). The effects on feedlot performance and on foot and leg scores and measurements were examined at approximately 50 and 100 kg body weight. Also, pigs were subjectively scored for overall structural soundness at the same weights. Limit-fed gilts consumed 78.1% as much feed as gilts fed ad libitum. Average daily gain of the limit-fed gilts was 86.7% that of the gilts fed ad libitum (P less than .01), and feed/gain was nonsignificantly improved by 8.4% for limit-fed gilts. The feeding of 150% of NRC-recommended levels of Ca and P resulted in a 5% increase (P less than .05) in daily gain, but daily feed intake and feed/unit of gain were not significantly affected. At the same age, almost all foot and leg measurements were larger for gilts fed ad libitum than for limit-fed gilts. However, when the values were adjusted for body weight, there was little or no measureable effect of energy intake. Elevated Ca and P levels had minimal effects, with only a trend toward larger measurements for...Continue Reading

Related Concepts

Calcium, Dietary
Energy Metabolism
Foot Diseases
Red Phosphorus
Swine Diseases

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