title: Nutritional quality and amino acid composition of diets consumed by scavenging hens and cocks across seasons.
abstract: The objective of the study was to determine the effect of season on nutritional quality and amino acid composition of diets that scavenging hens and cocks consume. Thirty hens and 30 cocks were purchased and slaughtered during each of the rainy, post rainy, cool dry and hot dry seasons. A total of 240 birds were used in the study. Fresh crop content weights were high (P < 0.05) during the cool dry season. Cereal grains, kitchen wastes, green materials, animal protein sources and inorganic materials were the main components of the crop contents. Crop contents varied with season and sex of bird (P < 0.05). The cereal grain weights were high during cool dry and hot dry seasons. Weights of animal protein sources (insects, locusts and termites) were higher (P < 0.05) during the rainy and post rainy seasons. Hens contained more animal protein sources (P < 0.05) than cocks. Hens had a higher (P < 0.05) lysine content during the rainy season than cocks. Histidine, serine, arginine, threonine, cysteine and lysine contents varied with seasons (P < 0.05). Methionine did not vary with season and sex of the bird. Nutritional supplementation of village chickens should, therefore, vary with seasons.
authors.affiliation: Animal and Poultry Science, School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, P bag X01 Scottsville 3209, Pietermaritzburg, South Africa.
authors.forename: Cyprial Ndumiso
authors.initials: CN
authors.lastname: Ncobela
authors.affiliation: Animal and Poultry Science, School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, P bag X01 Scottsville 3209, Pietermaritzburg, South Africa. chimonyo@ukzn.ac.za.
authors.forename: Michael
authors.initials: M
authors.lastname: Chimonyo
mesh_terms: D000596:Amino Acids / Q000032:analysis*; D000821:Animal Feed / Q000032:analysis*; D000822:Animal Husbandry; D000818:Animals; D002645:Chickens / Q000378:metabolism*; D003426:Crop, Avian / Q000378:metabolism; D004032:Diet / Q000662:veterinary*; D005191:Family Characteristics; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D008239:Lysine / Q000378:metabolism; D008297:Male; D009753:Nutritive Value; D012621:Seasons; D013019:South Africa; D011795:Surveys and Questionnaires
chemical_list: D000596:Amino Acids; D008239:Lysine
keywords: Amino acids; Cocks; Crop contents; Hens; Scavenging chickens; Seasons