title: Responses to supplementation in white Fulani cattle under agro-pastoral management in northern Nigeria. 1. Phosphorus.
abstract: Using on-farm supplementation trials with a P rich block (Phos) and a salt block (Salt), deficiency of P in White Fulani cattle in Nigeria was investigated. There was some evidence, significant in some locations but nonsignificant overall, that P supplemented dams produced heavier calves and supported greater calf growth. Dam mean weight gains, 9 to 1 months pre-partum were 6.9 kg/month on Phos (s.d. = 5.0, n = 50) and 3.8 kg/month on Salt (s.d. = 4.7 n = 54) (P > 0.05). Overall least squares means of calf weights at 12 months were 105.2 kg (n = 29, s.e. 9.3) on Phos and 91.5 kg (n = 37, s.e. 6.3) on Salt (P > 0.05). In animals below 2 years of age, mortalities were 6.8% on Phos and 13.6% on Salt (n = 179, Chi-square P < 0.01). No response to supplementation was observed in older and non-pregnant cattle.
authors.affiliation: Badia Research and Development Programme, Higher Council for Science and Technology, Amman, Jordan.
authors.forename: D A
authors.initials: DA
authors.lastname: Campbell
authors.forename: O A
authors.initials: OA
authors.lastname: Ikuegbu
authors.forename: E
authors.initials: E
authors.lastname: Owen
authors.forename: D A
authors.initials: DA
authors.lastname: Little
mesh_terms: D000375:Aging; D000821:Animal Feed; D000822:Animal Husbandry; D000818:Animals; D001724:Birth Weight; D002417:Cattle; D003612:Dairying; D005260:Female; D005527:Food, Fortified; D008297:Male; D009026:Mortality; D009549:Nigeria; D010758:Phosphorus / Q000097:blood; D016226:Phosphorus, Dietary / Q000494:pharmacology*; D011247:Pregnancy
chemical_list: D016226:Phosphorus, Dietary; D010758:Phosphorus