The present study was carried out at the slaughterhouse in the town of Korhogo to assess the morphological characteristics and quality of sheep carcasses. For this purpose, all sheep admitted to the slaughterhouse were considered. On these animals, different parameters such as determination of age, sex, live weight and body condition score were evaluated before slaughter. The criteria for assessing the quality of the carcasses (state of fattening, conformation and coloring, carcass weight and yield), carried out according to evaluation grids after slaughter. The results showed that Djallonke sheep were the most slaughtered in this slaughterhouse (91.3% of total numbers), including females over 4 years old (37.1%). However, Sahelian breed sheep had a higher carcass yield (47.93%) (P ≤ 0.05) than that of the Djallonkes (46.16%). The carcasses were mainly category D (83.77%) and conformation E (41.15%). However, the proportion of red coloring carcasses was highest in the Djallonké breed (64.97%) than in the Sahelian breed (5.92%). From the analysis of these results, it appears that most sheep admitted to the Korhogo slaughterhouse are females who have not finished their career in extensive breeding. Which could be detrimental to the sustainability of farms.

The diet of Cymbium glans, was studied from January 2016 to January 2018. This study was made from the stomach collected monthly on the gastropod from the industrial and artisanal marine fisheries of the EEZ. All the stomach contained prey. The vacancy coefficient (Cv) is zero. The methods of corrected occurrence frequency, numerical frequency and specific abundance were used to analyze the importance of different prey. The analyzes indicate that the Cymbium glans feeds on phytoplankton mainly diatoms (38, 2%). Zooplankton (crustacean) occupies 4%. The proportion of zooplankton increases with the size of the individual. In addition, the diet does not change, according to the marine seasons, nor according to the size of the individuals landed.

The work involved two species of edible snails (Achatina achatina and Archachatina ventricosa) and consisted in presenting the live weights and lengths of shells of the specimens collected in the Banco National Park, to look for the stages of growth and development and to draw conclusions about the protection of these species in their natural habitat. The results obtained showed that the individuals sampled are generally young and mature, and therefore capable of reproduction. Therefore, it is necessary to reduce the poaching of these snails and to think of new production strategies, notably the purchase of achatiniculture.