Blend-feeding or feeding a single diet to pigs has no impact on growth performance or carcass quality
K. L. Moore A B , B. P. Mullan A and J. C. Kim AA Livestock Industries Innovation, Department of Agriculture and Food Western Australia, South Perth, WA 6151, Australia.
B Corresponding author. Email: karen.moore@agric.wa.gov.au
Animal Production Science 53(1) 52-56 https://doi.org/10.1071/AN12053
Submitted: 14 February 2012 Accepted: 16 August 2012 Published: 16 October 2012
Abstract
A completely randomised block experiment was conducted using 216 female pigs (Large White × Landrace, six pigs/pen and 12 replicate pens/treatment), at an average liveweight (LW) of 22.6 kg ± 0.56 (mean ± s.e.m.), to examine the effect of feeding strategies on performance during the grower–finisher phase. Pigs were blocked and randomly allocated to the following treatments on the basis of initial LW: (1) phase-feeding: diets changed when the average LW of pigs in the pen reached 20, 50 or 80 kg; (2) blend: diets changed weekly to meet the requirements of the average LW of pigs in the pen and; (3) single: the same diet fed throughout (formulated to meet the requirements of the pig at 60 kg LW). The experimental diets were fed from 22 to 102 kg LW. Between 68 and 98 days of age, pigs fed the single diet grew more slowly (P < 0.001) due to poorer feed conversion (P < 0.001) than did pigs fed the phase-feeding or blend diets. However, between 99 and 133 days of age, pigs fed the single diet utilised feed more efficiently (P < 0.001) than did pigs fed the phase-feeding and blend diets. Therefore, there was no significant effect of the feeding strategies on overall growth performance (P > 0.05) and there was no significant difference in carcass quality (P > 0.05) among treatment groups. However, it was 3.74% and 3.51% cheaper to use the blend- and single-diet feeding strategies, respectively, than it was to use a phase-feeding program (P = 0.002). The present experiment has shown that blend-feeding could be a strategy to reduce the cost of production. Feeding a single diet appears to have merit and may have appeal for certain circumstances; however, it would need to be investigated further before being implemented commercially.
References
Black JL, Campbell RG, Williams IH, James KJ, Davies GT (1986) Simulation of energy and amino acid utilisation in the pig. Research and Development in Agriculture 3, 121–145.BPEX (2004) Finishing pigs: systems research production trial 2. Evaluation of phase feeding in two contrasting finishing systems (fully slatted versusstraw based housing). (Meat and Livestock Commission, British Pigs Executive: Milton Keynes, UK) Available at http://www.bpex.org.uk/downloads/295082/283356/Finishing%20Pigs%20Systems%20Research.%20Production%20Trial%202%20.pdf [Verified 12 September 2012]
Chiba LI (1995) Effects of nutritional history on the subsequent and overall growth performance and carcase traits of pigs. Livestock Production Science 41, 151–161.
| Effects of nutritional history on the subsequent and overall growth performance and carcase traits of pigs.Crossref | GoogleScholarGoogle Scholar |
de Greef KH, Kemp B, Verstegen MWA (1992) Performance and body composition of fattening pigs of two strains during protein deficiency and subsequent realimentation. Livestock Production Science 30, 141–153.
| Performance and body composition of fattening pigs of two strains during protein deficiency and subsequent realimentation.Crossref | GoogleScholarGoogle Scholar |
Fabian J, Chiba LI, Kuhlers DL, Frobish LT, Nadarajah K, Kerth CR, McElhenney WH, Lewis AJ (2002) Degree of amino acid restrictions during the grower phase and compensatory growth in pigs selected for lean growth efficiency. Journal of Animal Science 80, 2610–2618.
Kyriazakis I, Emmans GC (1991) Diet selection in pigs: dietary choices made by pigs following a period of underfeeding with protein. Animal Production 52, 337–346.
| Diet selection in pigs: dietary choices made by pigs following a period of underfeeding with protein.Crossref | GoogleScholarGoogle Scholar |
MLC Technical Division (1998) ‘Phase-feeding: effects on production efficiency and meat quality.’ (Meat and Livestock Commission: Milton Keynes, UK)
Mullan BP, Pluske JR, Hooper J, Wilson RH (1997) Blend feeding – an economic option for growing pigs. In ‘Recent advances in animal nutrition in Australia 1997’. (Eds JL Corbett, M Choct, JV Nolan, JB Rowe) p. 241. (University of New England: Armidale, NSW)
Pomar C, Pomar J, Babot D, Dubeau F (2007) The impact of daily multiphase feeding on animal performance, body composition, and nitrogen and phosphorus excretion in growing-finishing pigs. Journées Recherche Porcine 39, 23–30.
Pomar C, Hauschild L, Zhang G-H, Pomar J, Lovatto PA (2009) Applying precision feeding techniques in growing–finishing pig operations. Revista Brasileira de Zootecnia 38, 226–237.
| Applying precision feeding techniques in growing–finishing pig operations.Crossref | GoogleScholarGoogle Scholar |
Portejoie S, Dourmad JY, Martinez J, Lebreton Y (2004) Effect of lowering dietary crude protein on nitrogen excretion, manure composition and ammonia emission from fattening pigs. Livestock Production Science 91, 45–55.
| Effect of lowering dietary crude protein on nitrogen excretion, manure composition and ammonia emission from fattening pigs.Crossref | GoogleScholarGoogle Scholar |
Reynolds AM, O’Doherty JV (2006) The effect of amino acid restriction during the grower phase on compensatory growth, carcase composition and nitrogen utilisation in grower–finisher pigs. Livestock Science 104, 112–120.
| The effect of amino acid restriction during the grower phase on compensatory growth, carcase composition and nitrogen utilisation in grower–finisher pigs.Crossref | GoogleScholarGoogle Scholar |
Trezona M (2001) Pattern of nutrition can explain seasonal variation in the composition of pig carcases. Masters Dissertation, University of Western Australia, Perth.
