Development of a synthetic hair sheep by cross-breeding Malaysian Long Tail with Cameroon sheep. Estimation of energy and nitrogen requirements of F1 lambs

agneau agnelli alimentation des animaux alimentazione zootecnica animal feeding azote azoto besoin nutritionnel breeds clima tropical clima tropicale climat tropical climatic factors consommation alimentaire (animaux) consumo alimentare (animali) consumo de piensos cordero digestibilidad digestibility energy value f1 hybrids facteur climatique fattori climatici feed consumption gain de poids ganancia de peso hair hybride f1 ibridi f1 incremento di peso lambs malasia peninsular necesidades de nutrientes nitrogen nutritional requirements pelo peninsular malaysia poils proteine proteins race razas razze tropical climate valore energetico weight gain