A note on the effects of variations in food intake on nitrogen retention in control and selection lines of Large White pigs

Ruth Henderson; C. T. Whittemore; M. Ellis; W. C. Smith; R. Laird

doi:10.1017/S0003356100041738

A note on the effects of variations in food intake on nitrogen retention in control and selection lines of Large White pigs

Ruth Henderson, C. T. Whittemore, M. Ellis, W. C. Smith, R. Laird

Research output: Contribution to journal › Article › peer-review

Abstract

Fifty-three 7-day nitrogen balances were made using 13 control (C) and 15 selection line (S) Large White boars. Six feeding treatments were imposed, ranging from a Jevel estimated to maintain weight to a level aimed at inducing a fast growth rate from giving food twice daily to appetite for 30 min. Nitrogen retention did not differ significantly, but C boars retained slightly more than S boars at the lowest food intake, while S boars retained Slightly more than C boars at higher food intakes. The slopes of the regression of nitrogen retention against food intake for growth was steeper for S than for C boars (P > 0·05). It is concluded that great care should be taken in using metabolism experiment results to predict changes in body composition.

Original language	English (US)
Pages (from-to)	511-514
Number of pages	4
Journal	Animal Production
Volume	38
Issue number	3
DOIs	https://doi.org/10.1017/S0003356100041738
State	Published - Jun 1984
Externally published	Yes

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Animal Science and Zoology

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10.1017/S0003356100041738

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abstract = "Fifty-three 7-day nitrogen balances were made using 13 control (C) and 15 selection line (S) Large White boars. Six feeding treatments were imposed, ranging from a Jevel estimated to maintain weight to a level aimed at inducing a fast growth rate from giving food twice daily to appetite for 30 min. Nitrogen retention did not differ significantly, but C boars retained slightly more than S boars at the lowest food intake, while S boars retained Slightly more than C boars at higher food intakes. The slopes of the regression of nitrogen retention against food intake for growth was steeper for S than for C boars (P > 0·05). It is concluded that great care should be taken in using metabolism experiment results to predict changes in body composition.",

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AU - Ellis, M.

AU - Smith, W. C.

AU - Laird, R.

PY - 1984/6

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AB - Fifty-three 7-day nitrogen balances were made using 13 control (C) and 15 selection line (S) Large White boars. Six feeding treatments were imposed, ranging from a Jevel estimated to maintain weight to a level aimed at inducing a fast growth rate from giving food twice daily to appetite for 30 min. Nitrogen retention did not differ significantly, but C boars retained slightly more than S boars at the lowest food intake, while S boars retained Slightly more than C boars at higher food intakes. The slopes of the regression of nitrogen retention against food intake for growth was steeper for S than for C boars (P > 0·05). It is concluded that great care should be taken in using metabolism experiment results to predict changes in body composition.

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A note on the effects of variations in food intake on nitrogen retention in control and selection lines of Large White pigs

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