Journal article
The response of entire male and female pigs from 20 to 100-kg liveweight to dietary available lysine
Animal Production Science, Vol.53(1), pp.67-74
2013
Abstract
Two experiments were conducted to determine the responses of entire male and female pigs of the Australian Pig Improvement Co. genotype to dietary lysine. In Experiment 1, a total of 350 [Large White (Landrace Duroc)] entire male and female pigs weighing 22.3 0.16 kg (mean s.e.m.) were used in a 2 by 5 factorial design with the main treatments being sex (entire males and females) and five levels of standardised ileal digestible (SID) lysine to digestible energy ratio (0.6, 0.7, 0.8, 0.9 and 1.0 g SID lysine/MJ DE). In Experiment 2, a total of 420 [Large White (Landrace Duroc)] entire male and female pigs weighing 49.6 0.34 kg (mean s.e.m.) were used in a 2 by 5 factorial design with the main treatments being sex (entire males and females) and five levels of SID lysine to MJ DE ratio (0.4, 0.5, 0.6, 0.7 and 0.8 g). From 20 to 50 kg liveweight (LW), entire males had a similar average daily gain (ADG), lower feed intake (FI, P 0.001) and better feed to gain ratio (F:G, P 0.001) compared with females. From 50 to 100 kg LW, entire males had a higher ADG (P 0.001), similar FI and improved F:G ratio (P 0.001) compared with females. Data were subjected to the quadratic response model to determine optimum SID lysine requirement for maximum ADG and minimum F:G for the weight ranges 20-35, 35-50, 50-65, 65-80, and 80 to 95 kg LW. For male pigs, maximum ADG was achieved at SID lysine levels of 1.00, 0.87, 0.72, 0.67 and 0.63 g/MJ DE, respectively. Minimum F:G was achieved at SID lysine levels of 1.00, 0.87, 0.80, 0.69 and 0.63 g/MJ DE for the respective weight ranges. For female pigs, maximum ADG was achieved at SID lysine levels of 0.90, 0.84, 0.67, 0.63 and 0.58 g/MJ DE. Minimum F:G for females was achieved at SID lysine levels of 0.86, 0.85, 0.64, 0.66 and 0.40 g/MJ DE for the respective weight ranges. The results suggest that this Australian genotype requires greater dietary SID lysine in the growing and finishing phase than the levels currently used by the Australian industry.
Details
- Title
- The response of entire male and female pigs from 20 to 100-kg liveweight to dietary available lysine
- Authors/Creators
- K.L. Moore (Author/Creator)B.P. Mullan (Author/Creator)R.G. Campbell (Author/Creator)J.C. Kim (Author/Creator)
- Publication Details
- Animal Production Science, Vol.53(1), pp.67-74
- Publisher
- CSIRO Publishing
- Identifiers
- 991005543293007891
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
Metrics
26 Record Views
InCites Highlights
These are selected metrics from InCites Benchmarking & Analytics tool, related to this output
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.51 Dairy & Animal Sciences
- 3.51.208 Poultry Nutrition
- Web Of Science research areas
- Agriculture, Dairy & Animal Science
- ESI research areas
- Agricultural Sciences