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Responses in residual feed intake in lines of Large White pigs selected for growth rate on restricted feeding (measured on ad libitum individual feeding)

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Nguyen, N.H., McPhee, C.P. and Wade, C.M. (2005) Responses in residual feed intake in lines of Large White pigs selected for growth rate on restricted feeding (measured on ad libitum individual feeding). Journal of Animal Breeding and Genetics, 122 (4). pp. 264-270. ISSN 1439-0388

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Article Link: https://doi.org/10.1111/j.1439-0388.2005.00531.x

Abstract

Residual feed intake (RFI) represents the deviation of the actual ad libitum food consumption of each animal from that predicted from combination of growth rate, backfat and metabolic body weight measurements. After 4 years of divergent selection of pigs in lines for either high or low postweaning growth rate on restricted feeding, the high line exhibited a significant reduction in RFI relative to the low line. This indicated, to some extents, a lower energy requirement for maintenance in the high than in the low line, possibly because of reduced physical activity of the animals. Estimates of genetical parameters showed that RFI was moderately heritable and those genetic correlations of RFI with carcass backfat and food conversion ratio were moderate to highly positive.

Item Type:Article
Subjects:Animal culture > Swine
Animal culture > Feeds and feeding. Animal nutrition
Live Archive:06 Feb 2024 01:48
Last Modified:06 Feb 2024 01:48

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