Effects of sudden melon intake on ruminal parameters of non-adapted sheep

Pesquisa Veterinária Brasileira

Ortolani, Enrico Lippi¹  Tavares, Marcondes Dias³  Oliveira, Francisco L.C.¹  Sousa, Rejane Santos¹  Minervino, Antonio H.H.²  Vale, Rodolfo Gurgel³  Barrêto Júnior, Raimundo A.³  Araújo, Carolina Akiko Sato Cabral¹ 

[1] Universidade de São Paulo, São Paulo, Brazil;Universidade Federal do Oeste do Pará, Santarém, Brazil;Universidade Federal Rural do Semiárido, Mossoró, Brazil

关键词:  Melon;    acidosis;    rumen;    sheep;    fruits;    pH;    lactate.;   

DOI  :  10.1590/S0100-736X2016000500004

来源: Colegio Brasileiro de Patologia Animal-CBPA

【 摘 要 】

:This study evaluated the effects of varying amounts of melon with high sugar content offered to sheep without prior melon experience and that were not adapted to consuming it. We used 12 eight-month-old, rumen-cannulated crossbred sheep weighing 25 kg each. The animals received a base diet of roughage, and then half were randomly selected to have 25% of their diet replaced with melon (G25%) and the other half had 75% of their diet replaced with melon (75%). Ruminal fluid was collected before administration of melon and at 0, 3, 6, 12, 18, and 24 h after the administration of the fruit. Sheep from the G25% group presented volatile fatty acid ruminal acidosis (sub-acute) between 3 and 6 h after consumption. This acidosis was characterized by a rumen pH slightly lower than 5.6, increased discrete L-lactic acid content, and increased redox potential (RP) and methylene blue redox (MBR) time of the ruminal fluid. The G75% group presented lactic ruminal acidosis at T6h, characterized by a rumen pH lower than 5.0, high lactate-L content, increased RP and MBR time, and increased ruminal fluid osmolarity. Therefore, offering large amounts of melon (75% of dry matter (DM)) is not recommended but 25% of DM of this fruit can be used safely.Index

【 授权许可】

Unknown