Data/hora: 28/05/2024 13:45:32

Biblioteca(s): | Embrapa Meio-Norte.
Data corrente: | 31/05/1996
Data da última atualização: | 31/05/1996
Autoria: | HOLMANN, F.; BLAKE, R. W.; HAHN, M. V.; BARKER, R.; MILLIGAN, R. A.; OLTENACU, P. A.; STANTON, T. L.
Título: | Comparative profitability of purebred and crossbred Holstein Herds in Venezuela.
Ano de publicação: | 1990
Fonte/Imprenta: | Journal of Dairy Science, v.73, n.8, p.2190-2205, 1990.
Idioma: | Inglês
Conteúdo: | The objective was to compare the profitability of dual purpose systems(beef and milk) with Holstein crossbred cattle in lowland ecozones with those in highland dairy systems using puerebred Holsteins. Data werevariable costs for feed, labor, health, and reproduction; gross incomes from milk and beef from surveys of 157 farms in 1987 to 1988; and records of dairy performance. Profit measures were milk income over feedcost for lactating cows and net margin for all cows (gross income frommilk and beef minus variable costs per year). Least squares methods were used to estimate costs and profit measures from a model containing effects of breed, ecozone, herd, size, reproduction system, interviewer, and milk yield as a covariate. Milk income over feed cost for dairysystems was greater than for dual purpose systems, but this was a misleading profit measur because it ignores beef sales and other costs andrelevant animal categories (e.g., dry cows). When these factors were considered, dual purpose systems with crossbred cows (lowest cost) and dairy systems with Holsteins had similar net margins. However, greaterprofits were indicated for dual purpose systems when the average milk per cow for these systems was considered to eam similar profits, eliminating the concentrate feed subsidy and the preferential exchange ratebeef production, transport costs, and fixed costs of capital. Thus, the most economical production system for Venezuela at this time is dualpurpose herds with crossbred canttle in the lowland ecozones.
Palavras-Chave: | Bovino de leite; Raca pura.
Thesagro: | Cruzamento; Sistema de Produção.
Categoria do assunto: | --
Registro original: | Embrapa Meio-Norte (CPAMN)
Exemplares: | CPAMN - (3386-1) - ADC - SP - -- - S 10792 -  - S 10792 - DIS