Use of emulsifier and lipase in feeds for broiler chickens
| Autor: | Eric Márcio Balbino, Alexandre Moraes Pinheiro, Tamiris Natalice Santos Silva, Evani Souza de Oliveira Strada, Jerônimo Ávito Gonçalves de Brito, Lin Ily, Tatiana Cristina da Rocha, Lennon Santos de Oliveira |
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| Rok vydání: | 2019 |
| Předmět: |
biology
Chemistry Broiler Triacylglycerol lipase 04 agricultural and veterinary sciences Feed conversion ratio Animal science Initial phase 040103 agronomy & agriculture Abdominal fat medicine biology.protein 0401 agriculture forestry and fisheries Dry matter medicine.symptom Lipase General Agricultural and Biological Sciences Weight gain |
| Zdroj: | Semina: Ciências Agrárias. 40:3181 |
| ISSN: | 1679-0359 1676-546X |
| Popis: | The objective of this study was to evaluate the effect of exogenous emulsifier and lipase in diets on performance, digestibility, and organ biometry of broiler chickens. A completely randomised design with seven treatments and seven replications was adopted. The treatments were as follows: T1 (positive control; PC): 3000, 3100, 3200, and 3250 Kcal of metabolisable energy (ME) kg -1 of diet for phases 1 to 10, 11 to 21, 22 to 31, and 32 to 37 days, respectively; T2: PC with reduction in ME of 30 Kcal kg -1 of diet; T3: PC with reduction in ME of 60 Kcal kg -1 of feed; T4 (negative control; NC): PC with reduction in ME of 90 Kcal kg -1 of feed; T5: NC with inclusion of exogenous lipase (10 000 U kg -1 ); T6: NC with inclusion of emulsifier (250 g t -1 ); and T7: NC with inclusion of lipase (10 000 U kg -1 ) and emulsifier (250 g t -1 ) in the period from 1 to 37 days of rearing. Performance characteristics (weight gain (WG), feed intake (FI), and feed conversion (FC)), carcass yield, cut yield, the relative weight of abdominal fat and organs (small intestine, liver, and pancreas), and relative intestinal length, in addition to dry matter digestibility (CDADM), ethereal extract (CDAEE), crude metabolisable energy (CMACE), and apparent metabolisable energy (AME) of the diets, were evaluated. In the initial phase, the CDAEE was higher for the PC group than for the emulsifier + lipase group. The AME determined in the final phase for the group supplemented with an emulsifier was higher by approximately 50 Kcal (EM) than the NC group. The WG of the lipase group was similar to that of the PC group. However, the groups with emulsifier and emulsifier + lipase showed a lower WG than the PC group. The additives used did not recover the FC to the same level observed in the PC group. The reduction in ME of 90 Kcal kg -1 generated a lower WG and worse FC. The use of both an emulsifier and lipase together produced results like to the PC group. The biometrics of the organs and the carcass yield and cuts were not influenced by diets. Thus, it can be concluded that the inclusion of lipase and an emulsifier improves the performance of broilers given diets with reduced energy, although it does not improve the lipid utilisation of the diets. |
| Databáze: | OpenAIRE |
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