No abstract

No abstract

No abstract

Senegal, like the other Sahelian countries, remains an important livestock area, particularly for ruminants, with almost 36% of its livestock population was goat in 2016. The national herd increased from 2010 to 2016, from 3.32 to 3.54 million head of cattle, 5.6 to 6.68 million sheep and 4.8 to 5.7 million goats, i.e. annual growth rates of 1.1%, 3.2% and 3.13% respectively. Thus, due to diversification of local agricultural resources and the strengthening of goat breeding techniques in the Fatick area, a programme aiming to develop the local goat sector was set up in 2010. The programme focused on improving animal husbandry, providing new added values to goat products and structuring the goat sector. This study’s aim is to better understand goat rearing systems in the area, in order to propose, together with the herders, ways of improving these systems, taking into account family and socio-cultural considerations. To better evaluate the diversity in different production systems, a survey of animal rearing practices was carried out. The survey involved 45 farmers in four localities. It revealed that the farmers were all agro-pastoralists practising a mixed farming system. The majority (93%) supplemented their animals with agricultural by-products, agro-forestry and kitchen leftovers. A multiple correspondence analysis identified three groups: cluster 1 (milk producers and processors into traditional curdled milk, selling animals for household needs), cluster 2 (milk processors into yoghurt and cheese) and cluster 3 (goat vendors in pastoral and the agro-pastoral system).The study of the objectives and contexts of goat farming in the Fatick will enable policy-makers to design strategies for the sustainable development of family goat farming in the area.

This study aimed to compare digestive and metabolic characteristics in Sahelian (S) and Majorera (M) goat breeds. Six lactating females from each breed, with an average weight 27.0 ± 1.93 and 23.7 ± 1.27 kg, respectively, were used. Cowpea hay, variety 58/74, was offered as sole feed ingredient, at a rate of 2 kg of fresh matter per animal per day. The animals were placed in metabolic cages and a digestibility test was conducted according to an adaptation period of 15 days and a collection period of 7 days. The daily chemical components offered and refused and recovered faeces, urine and milk were measured in order to assess energy and nitrogen utilization. The M and S goats had similar levels of dry matter (DM) intake as well as nutrient digestibility. On a metabolic weight basis, dry matter intake, gross energy intake, metabolizable and energy intake, digestible energy and energy lost as methane production were significantly higher (p < 0.01) in M than in S goats. Urinary energy excretion was similar (p = 0.9) between breeds, while faecal energy output was higher in M than in S goats. The milk energy output from the M goats was higher than that the S goats (p < 0.05). However, metabolizable to net energy conversion efficiency (klm) was not affected by breed (p = 0.37), while N intake, milk N yield and faecal N losses, relative to metabolic weight, were significantly higher (p < 0.05) in M than in S goats. Similarly, the percentage of dietary N intake excreted in urine (UNIN) was higher in S than in M breeds. The breed factor had no effect on N retained, N digestibility, urinary N and N use efficiency. In conclusion, the M and S goats were similar in terms of energy and nitrogen use efficiency, despite higher daily milk production and DM consumption in the M goat. This suggests that the M breed is possibly more dependent on a dense nutrition diet than the S breed but requires less maintenance nitrogen.