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Mejia et al., 1993. Livest. Res. Rural Dev., 5 (3)

Document reference 
Mejía, C. E. ; Vargas, J. E. , 1993. Analysis of the selection by African sheep of four types of forages. Livest. Res. Rural Dev., 5 (3)
Alternative title 

Análisis de selectividad de ovejas africanas con cuatro tipos de forrajes


A self-selection experiment was carried out with weaned lambs (Tropical Hair sheep breed) to establish preferences for various local feed resources commonly included in the diet of these animals when managed in confinement. These included: sugar cane tops, foliage of Trichantera gigantea (a forage tree from the coffee growing region of Colombia), foliage of Gliricidia sepium, foliage of Leucaena leucocephala, a molasses-urea block and poultry litter. A total of 9 animals was used divided in three homogeneous groups. Relative intakes (kg DM/100 kg liveweight/day) were: Gliricidia sepium 1.84, sugar cane tops 1.33, Trichantera gigantea 0.73, poultry litter 0.59, Leucaena leucocephala 0.19, multinutritional block 0.12 (SE"0.10; Prob=0.001). The consumption of gliricidia represented, on average, 38% of the total daily dry matter intake. It is suggested that the factor which most influences intake of a particular tree foliage is the degree to which the animals are accustomed to eating it. Therefore, for some tree foliages, the animals need an adequate time to adapt to such feed before they are able to consume appreciable quantities.

Teniendo como sede el Instituto Mayor Campesino de Buga (Valle del Cauca), con una altitud de 1000 msnm y 23 °C de temperatura promedio, se desarrolló una prueba de cafetería para establecer la preferencia alimenticia de las ovejas de pelo. Se utilizaron 9 ovejas machos enteros con un peso promedio de 20 kg. Los animales se alojaron por pesos homogéneos en tres grupos. Los tres grupos recibieron, a voluntad, cogollo de caña (Sacharum oficinarum), follaje de nacedero (Trichanthera gigantea), follaje de matarratón (Gliricidia sepium), follaje de leucaena (Leucaena leucocephala), bloque multinutricional (10% urea) y pollinaza. Los consumos (kg de MS/100 kg peso vivo), ordenados decrecientemente según la preferencia, fueron: matarratón 1.84, cogollo de caña 1.33, nacedero 0.73, pollinaza 0.59, leucaena 0.19 y bloque multinutricional 0.12 (ES"0.10; Prob=0.001). Se plantea que el factor que más influye sobre el consumo de un follaje proteico arboreo es el grado de acostumbramiento al mismo. Es posible, por lo tanto, que en el caso de forrajes arbóreos las ovejas requieren tiempo para adaptarse a cualquiera nueva especie, antes de poder alcanzar niveles apreciables de consumo.

Citation key 
Mejia et al., 1993