J. Anim. Sci. Vol. 88, E-Suppl. 2/J. Dairy Sci. Vol. 93, E-Suppl. 1/Poult. Sci. Vol. 89, E-Suppl. 1 M238 The effects of the dietary supplementation with essential oils from selected species of the Lamiaceae family on the performance of growing broilers chickens. L. Roldan*1, C. Ariza-Nieto2, G. Diaz1, and G. Afanador1,2, 1Universidad Nacional de Colombia, Bogota, Colombia, 2CORPOICA, Bogota, Co...

The aim of the present study was to analyze the ultrastructural aspects of spermatogenesis in Phalloceros caudimaculatus, during cell proliferation. The parenchyma is organized morphologically as lobular restricted spermatogonial testis. Spermiogenesis in this species is characterized by four morphological stages of development (spermatids S1 through S4). The mature spermatids and spermatozoa h...

J. Anim. Sci. Vol. 88, E-Suppl. 2/J. Dairy Sci. Vol. 93, E-Suppl. 1/Poult. Sci. Vol. 89, E-Suppl. 1 T135 Comparison of nonlinear functions for describing the growth curve of Nile tilapia Oreochromis niloticus var. chitralada in a commercial production cycle. D. Rodriguez1, C. Ariza-Nieto2, A. Munoz1, and G. Afanador*1,2, 1Universidad Nacional de Colombia, Bogota, Colombia, 2CORPOICA, Bogota, Co...

The efficacy of crude pineapple juice obtained from Ananus comosus in digesting fish for the harvesting of trematode metacercariae was investigated. No significant difference was found between the total number of metacercariae detected from fish (Cirrhina jullieni) digested by acid pepsin and those digested by freshly prepared pineapple juice that was kept for 15 days at a temperature of either...

Cyprinodontiformes fishes (guppies) are widely distributed in Neotropical regions and use deteriorated microhabitats in rivers where few species can occur. This study was carried out in a stretch of the Paraíba do Sul River in bracketing a large urban-industrial complex. The aim was to assess eventual effects that the industrial complex could have on distribution of two closely related fish spe...

Background: Reba carp is one of the promising candidates for species diversification in fresh-water aquaculture. It available all major rivers India. Cryopreserved milt will be useful genetic exchange between remotely located farms. For using cryomilt as a tool exchange, specific cryopreservation protocol required. Methods: Milt was cryopreserved three extenders (7,7B and 9C) two cryoprotectant...