Análise econômica parcial de dietas com farelo e a torta de girassol, na alimentação de vacas leiteiras
Arquivos
Data
2008-02-22
Autores
Sousa, Clayson Correia de [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Estadual Paulista (Unesp)
Resumo
Esta dissertação teve por objetivo avaliar o desempenho animal e econômico da adição de níveis crescentes de torta de girassol em substituição ao farelo de girassol no concentrado para vacas leiteiras. Os tratamentos foram constituídos de 0, 20, 40 e 60% de substituição do farelo pela torta. O delineamento experimental foi conduzido em dois quadrados latinos 4 x 4, sendo utilizados 8 animais. Avaliou-se o consumo de matéria seca total, da silagem e do concentrado, além da produção de leite. A avaliação econômica foi feita pelo método de orçamentos parciais. O consumo de matéria seca total foi de 13,46; 13,28; 14,1 e 13,47 kg/dia respectivamente para os tratamentos com 0; 20; 40 e 60% de substituição respectivamente. Para o concentrado, o consumo foi de 4,13; 3,95; 4,35 e 4,23 kg/dia respectivamente para cada tratamento. Não foram encontradas diferenças significativas (P>0,05) entre os tratamentos tanto para consumo de matéria seca total quanto para o volumoso ou concentrado. As produções médias de leite foram de 13,38; 14,00; 13,45 e 13,96 kg/dia para cada um dos tratamentos. Também não foram encontradas diferenças significativas entre os tratamentos para a produção de leite (P>0,05). Os dados indicam, portanto que a torta pode substituir até 60% do farelo no concentrado, sem prejuízo ao desempenho dos animais. A avaliação econômica mostrou que houve aumento do custo das dietas com a inclusão da torta de girassol, contudo, no segundo cenário, em que a torta é produzida na propriedade, houve aumento da receita líquida.
The objective of this dissertation was to evaluate the effects of addition of sunflower cake with growing levels of inclusion at the concentrate to dairy cows on the economics and animal performance. The levels of 0, 20, 40 and 60 % of inclusion of the sunflower cake in the concentrate constituted the treatments. The experiment was done into two 4 x 4 latine square and the number of animals used was eight. The intakes of total dry matter (TDMI) and of the silage (SDMI) or concentrate (CDMI) and the milk yield were evaluated. The economic evaluation was done by the method of Partial Budget Analysis. The TDMI was 13.46, 13.28, 14.1 and 13.47 kg/day to the treatments with 0, 20, 40 and 60 % of inclusion respectively. The intakes of dry matter of the concentrate, were 4.13, 3.95, 4.35 e 4.23 kg/day, respectively for each treatment. There were not find significant differences (P>0.05) among the treatments as so to the TDMI as to the SDMI or CDMI. The milk yields to each animal were 13.38, 14.00 13.45 and 13.96 kg/day respectively with the levels 0, 20, 40 and 60% of addition of the sunflower cake. In addition, there were not find significant differences between the treatments. Than, the data showed that the sunflower cake could be used with 60% of inclusion and it didn´t prejudiced the performance of the animals. The economic evaluation showed that the inclusion of the sunflower cake at the diets, considering the two cenaries, improved the costs with the diet. However, considering a second cenary, were the cake is produced at the farm, the growing of the net income with the inclusion of the cake was observed.
The objective of this dissertation was to evaluate the effects of addition of sunflower cake with growing levels of inclusion at the concentrate to dairy cows on the economics and animal performance. The levels of 0, 20, 40 and 60 % of inclusion of the sunflower cake in the concentrate constituted the treatments. The experiment was done into two 4 x 4 latine square and the number of animals used was eight. The intakes of total dry matter (TDMI) and of the silage (SDMI) or concentrate (CDMI) and the milk yield were evaluated. The economic evaluation was done by the method of Partial Budget Analysis. The TDMI was 13.46, 13.28, 14.1 and 13.47 kg/day to the treatments with 0, 20, 40 and 60 % of inclusion respectively. The intakes of dry matter of the concentrate, were 4.13, 3.95, 4.35 e 4.23 kg/day, respectively for each treatment. There were not find significant differences (P>0.05) among the treatments as so to the TDMI as to the SDMI or CDMI. The milk yields to each animal were 13.38, 14.00 13.45 and 13.96 kg/day respectively with the levels 0, 20, 40 and 60% of addition of the sunflower cake. In addition, there were not find significant differences between the treatments. Than, the data showed that the sunflower cake could be used with 60% of inclusion and it didn´t prejudiced the performance of the animals. The economic evaluation showed that the inclusion of the sunflower cake at the diets, considering the two cenaries, improved the costs with the diet. However, considering a second cenary, were the cake is produced at the farm, the growing of the net income with the inclusion of the cake was observed.
Descrição
Palavras-chave
Bovino de leite, Leite - Produção, Avaliação econômica, Subprodutos do girassol, Dairy cattle, Economics evaluation, Milk yield, Sub-products of sunflower
Como citar
SOUSA, Clayson Correia de. Análise econômica parcial de dietas com farelo e a torta de girassol, na alimentação de vacas leiteiras. 2008. xiii, 39 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, 2008.