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Previous issue date: 2017-07-28 / Objetivou-se avaliar a substitui??o da suplementa??o da ractopamina pelo uso dos ?leos de c?rtamo e coco na dieta de su?nos em termina??o. Foram utilizados 24 su?nos machos castrados mesti?os com peso m?dio de 78,00 ? 8,76 kg, distribu?dos em delineamento em blocos casualizados, com quatro tratamentos e seis repeti??es. Os tratamentos constitu?ram de Ra??o Basal (RB); RB + 10 ppm de ractopamina; RB + 4g de ?leo de coco e RB + 4g de ?leo de c?rtamo. Avaliou-se os par?metros de desempenho, peso dos ?rg?os, caracter?sticas de carca?a, qualidade da carne e perfil de ?cidos graxos por cromatografia gasosa. Os animais alimentados com ractopamina e o ?leo de c?rtamo apresentaram melhor convers?o alimentar. O maior ganho de peso foi observado (p ? 0,05) nos animais suplementados com o ?leo de coco e a ractopamina. Em rela??o ao peso dos ?rg?os, observou-se redu??o (p ? 0,05) no peso do est?mago dos animais suplementados com o ?leo de coco. Constatou-se redu??o significativa (p ? 0,05) na espessura de toucinho no ponto 3 dos animais suplementados com ?leo de c?rtamo e para ?rea de olho de lombo houve efeito significativo (p ? 0,05) nos alimentados com ractopamina. Os demais par?metros de carca?a n?o foram observados (p > 0,05) diferen?a entre os tratamentos utilizados. Nas avalia??es do perfil de ?cidos graxos, observou-se maior concentra??o (p ? 0,05) de C12:0 e C14:0 no tecido adiposo dos su?nos suplementados com ?leo de coco. No m?sculo Longissimus dorsi houve o enriquecimento com ?-9, redu??o do C18:1n9t nos animais suplementados com ?leo c?rtamo e eleva??o de C16:1 nos suplementados com ?leo de coco. Recomenda-se a utiliza??o do ?leo de c?rtamo em substitui??o a ractopamina, por apresentar melhor convers?o alimentar, reduzir a espessura de toucinho e promover o enriquecimento da carne com ?-9. / This study aimed to evaluate the replacement of supplementation of ractopamine by the use of safflower and coconut oils in pig diet termination. 24 crossbred barrows were used with an average weight of 78.00 ? 8.76 kg, distributed in a randomized block design with four treatments and six replications. The treatments constituted of Basal Ration (BR); BR + 10 ppm of ractopamine; BR + 4g of coconut oil and BR + 4g of safflower oil. Assessed the performance parameters, organ weight, carcass characteristics, meat quality and profile of fatty acids by gas chromatography. Animals fed ractopamine and safflower oil showed better feed conversion. The highest weight gain was observed (p ? 0.05) in the animals supplemented with coconut oil and ractopamine. In relation to the weight of the organs, it was observed reduction (p ? 0.05) in the stomach weight of animals supplemented with coconut oil. There was a significant (p ? 0.05) reduction in the backfat thickness at point 3 of the animals supplemented with safflower oil and in the loin eye area there was a significant effect (p ? 0.05) on the ractopamine fed. The other carcass parameters were not observed (p > 0.05) difference between the treatments used. In the evaluation of the fatty acid profile, a higher concentration (p ? 0.05) of C12:0 and C14:0 was observed in the adipose tissue of the pigs supplemented with coconut oil. In the longissimus muscle dorsi there was the enrichment with ?-9, reduction of C18:1n9t in animals supplemented with oil safflower and elevation of C16:1 in supplemented with coconut oil. The use of safflower oil is recommended to replace the ractopamine, for presenting better feed conversion, reduce the backfat thickness and promote meat enrichment with ?-9.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/24604 |
| Date | 28 July 2017 |
| Creators | Costa, Clara Viviane Silva da |
| Contributors | 02697719806, Ramalho, Adriana Margarida Zanbotto, 01082106429, Moreira, Faviano Ricelli da Costa, 02334056405, Teixeira, Elisanie Neiva Magalh?es, Moreira, Jos? Aparecido |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM PRODU??O ANIMAL, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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