Asian-Australasian Journal of Animal Sciences

  • 제31권11호
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  • Pages.1833-1839
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  • 2018
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  • 1011-2367(pISSN)
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  • 1976-5517(eISSN)
아세아태평양축산학회 (Asian Australasian Association of Animal Production Societies)
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Effect of fibrous diets on chemical composition and odours from pig slurry

  • Mpendulo, Conference Thando (Animal and Poultry Science, School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal) ;
  • Hlatini, Vuyisa Andries (Animal and Poultry Science, School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal) ;
  • Ncobela, Cypril Ndumiso (Animal and Poultry Science, School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal) ;
  • Chimonyo, Michael (Animal and Poultry Science, School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal)
  • 투고 : 2016.02.15
  • 심사 : 2016.09.06
  • 발행 : 2018.11.01
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초록

Objective: Incorporating high fibre ingredients into pig diets has the potential to reduce odour emissions from of pigs. The current study was carried out to determine effect of diets containing 0, 80 and 160 g/kg of each of lucerne hay, maize cobs and sunflower husks on the chemical characteristics and odours from pig slurries. Methods: Twenty eight pigs averaging $18{\pm}2.0kg$ were kept in individual cages, over four weeks. All pigs were fed ad libitum. Faeces and urine were collected, mixed in a 1:2.3 ratio (w/w), stored and fermented for 16 days in a temperature controlled room at $22^{\circ}C{\pm}2.3^{\circ}C$. The slurry was sampled twice (on day 1 and on day 16) of the fermentation period and analysed for pH, chemical oxygen demand (COD), nitrogen and short chain fatty acids (SCFA) concentration, on wet basis. All samples were tested for odour offensiveness using 18 panelists. A scale of 1 to 5 was used to rank the odour severity, (1 = not offensive, 5 = extremely offensive). Results: Slurry pH and COD varied with fibre source (p<0.05). On day 16, COD for lucerne hay, sunflower husk and maize cobs were 369, 512, and 425 (standard error of the mean = 34.2) mg of oxygen per litre. Total SCFA concentration was higher at day 16 than day 1 (p<0.05). Odour offensiveness varied with fibre source across both incubation periods (p<0.05). Sunflower husks and lucerne hay-based diets were rated as less offensive (mean rank = 2.2) than maize cob diets (mean rank of 4.3) (p<0.05). Conclusion: It was concluded that different fibre sources and incubation period influence chemical composition and odour of the slurry. There is, thereby, a need to incorporate locally available fibrous feeds in the diet of pigs because they have an economical and environmental relevance to pig management.

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참고문헌

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피인용 문헌

  1. Effect of Inclusion Levels of Maize Bran in Pig Diets on Daily Production, Biochemical Composition and Microbial Quality of Pig Manure vol.20, pp.3, 2021, https://doi.org/10.3923/pjn.2021.83.89