Blight, G.W.

Magee, M.H.

Perez-Maldonado, R.

Singh, D.N.

English

Queensland DAF eResearch Archive

Asia Pacific Journal of Clinical Nutrition (2001) 10 (Suppl)S32Evaluation of cottonseed meal for grower pigs between 20 and 50 kg liveweight DN Singh1, R Perez-Maldonado2, GW Blight1, MH Magee11Agency for Food and Fibre Sciences, Animal Research Institute, LMB No 4, Moorooka, Qld, 41052Queensland Poultry Research and Development Centre, Cleveland, QLD, 4163Cottonseed meal (CSM) offers great potential for use in Australia’s intensive livestock industry as an eco-nomical protein-rich source. Unfortunately, CSM is often limited to low dietary inclusion levels in pig diets(4–10%) because of the suspected adverse effects of anti-nutritive factors such as gossypol. Gossypol may bindwith lysine during heat processing thereby reducing digestibility and availability (1,2). This experiment exam-ined the inclusion level of solvent-extracted CSM in diets of pigs growing from 20 to 50 kg liveweight. Theexperiment was arranged as a randomised block layout of 36 individually penned Large White cross pigs, withsix dietary treatments (0, 50, 100, 150, 150 with Fe and 200 g/kg CSM X two sexes (males and females) repli-cated three times. Pigs weighing ~20 kg were randomly allocated within sex and initial weight class to blocksof pens with pen blocks corresponding to initial weight classes. Diets were formulated to contain 14MJ/kgDigestible Energy (DE) and 0.63 g available lysine per MJ DE. Diets and water were offered ad libitum. CSMwas sourced from Brisbane and contained 453 g protein/kg, 16.6 g lysine/kg, 18 g fat/kg and 0.06 g free-gossypol/kg. The performance of pigs fed > 100 g/kg CSM was significantly greater than those on control diet(P < 0.05). This suggests that the DE value of CSM was underestimated in the formulation of the diets. Dietcontaining 50 g/kg of CSM yielded the lowest ADG (0.747 kg/d), although the DFI at this inclusion level wasnot significantly different to the control diet. Addition of iron salt did not have any effect on growth per-formance. This suggests that inclusion of solvent extracted CSM in diets of growing pigs does not require theaddition of iron salts to neutralise the effects of gossypol that is present in CSM. The FCR was not signifi-cantly different as the level of CSM increased. The data confirms that up to 200 g/kg of CSM can be fed topigs growing from 20 to 50 kg without any deleterious effect on performance. Further investigation on energydigestibility and amino acid digestibility and availability is warranted if CSM is included at high levels in pigdiets. Supported in part by Pig Research and Development Corporation.1. Batterham ES, Andersen LM, Baigent RD, Darnell RE, Taverner, MR. A comparison of the availability and ilealdigestibility of lysine in cottonseed and soyabean meals for grower/finisher pigs. British J Nut 1990; 663–677.2. Fernandez SR, Zhang Y, Parsons CM. Dietary formulation with cottonseed meal on a total amino acid versus adigestible amino acid basis. Poultry Sc 1995; 1168–1179.Diet CSM g/kg) 0 50 100 150 150 (Fe)1 200 LSD(0.05)ADG2 (kg/d) 0.826b 0.747c 0.893ab 0.905a 0.899a 0.899a 0.067FCR3 (kg/kg) 3.001 2.984 2.835 2.780 2.806 2.823 0.238DFI4 (kg/d) 1.843b 1.883b 2.120a 2.086a 2.079a 2.134a 0.189Row means not followed by a common superscript differ significantly. 1150g/kg CSM + iron sulphate. 2Average DailyGain, 3 Feed Conversion Ratio, 4Daily Feed Intake.

Evaluation of cottonseed meal for grower pigs between 20 and 50 kg liveweight

http://era.daf.qld.gov.au/9877/1/Evaluation%20of%20cottonseed%20meal%20for%20grower%20pigs%20between%2020%20and%2050%20kg%20liveweight.pdf

Evaluation of cottonseed meal for grower pigs between 20 and 50 kg liveweight

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