This study aimed to evaluate differences in productive performance between primiparous and multiparous Murrah buffaloes and the interrelationships between metabolic traits during the transition period and early lactation. Thirty pregnant buffaloes were monitored during the transition period and at the beginning of the lactation. Animals were randomly assigned within the two experimental groups considering the calving number and the estimated calving date: primiparous (n = 15) and multiparous buffaloes (n = 15). The buffaloes were monitored every week during the last 30 days of pregnancy, and the first 63 days postpartum. Buffaloes were kept in the same environment condition, and management practices. Multiparous buffaloes, at the postpartum period, showed higher milk fat, protein, lactose, total dry extract production, non-fat dry extract contents, and higher milk urea nitrogen and casein contents than primiparous buffaloes. Primiparous buffaloes showed higher urine pH and hematocrit concentration than the multiparous group at the prepartum period and higher leukocyte and lymphocytes concentrations at the postpartum. During the transition period, primiparous buffaloes exhibited negative interrelationships between metabolic traits and productive performance related to variations in their metabolic status. These results may indicate that multiparous buffaloes fewer sensitive to variations of metabolic status during the transition period.

The crab-eating fox (Cerdocyon thous) is a canid widely distributed in South America and is considered the only representative of the genus Cerdocyon. These are nocturnal animals, measuring about 65 cm of body length, with light grey coat and yellowish base, a black dorsal band that extends from the nape to the tip of the tail, darker legs and feet and relatively short hair (Ramos Júnior et al., 2003). This species is often seen in the wild animal surgical clinic, as they are constant victims of trampling or chase, accused of preying domestic animals (Gonçalves et al., 2016). Due to its phylogenetic proximity with domestic dog, the last is used as model for medical approaches in the Cerdocyon thous, once there is a lack of morphophysiological knowledge of these individuals (Ferrigno et al., 2014;Gomes, 2007).The phrenic nerve is the main motor supply of the diaphragm, and it is composed, in most domestic species, by ventral branches of the fifth, sixth and seventh cervical spinal nerves (Ghoshal, 1986).However, diaphragm can also be innervated by intercostal nerves, as

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