Body Composition and Net Energy Requirements for Maintenance of Non-Castrated Water Buffaloes (Bubalus bubalis)
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Data
2013-01-01
Autores
Jorge, Andre Mendes [UNESP]
Freitas, Jose Antonio de
Alencar Fontes, Carlos Augusto de
Castilhos, Andre Michel de [UNESP]
Prospero Puoli Filho, Jose Nicolau [UNESP]
Bonilha Pinheiro, Rafael Silvio [UNESP]
Francisco, Caroline de Lima [UNESP]
Silva, Mauricia Brandao da [UNESP]
Padovan, Isabela de Mello [UNESP]
Cominotte, Alexandre [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Int Buffalo Information Ctr
Resumo
The research aimed to estimate body contents of protein and energy and net requirements of energy for maintenance of buffaloes, slaughtered at different stages of maturity. There were used 14 Mediterranean intact males with initial average body weight of 352.2 +/- 24.3 kg and average age of 24 months. The animais were randomly divided into four experimental groups. One group was designed to slaughter at the beginning of the experimental period (IS). The animals of another group were restricting fed, receiving, individually, levels of protein and energy 15% above maintenance (RF). The animals of the two remaining groups were individually fed ad libitum (SW450 and SW500) to reach weights corresponding to 100 and 110 percent of the mature weight of the buffalo cows (respectively 450 and 550 kg). The ration contained ground-corn cobs, soybean meal, urea, minerals, and signal-grass (Brachiaria decumbens) hay, with a concentrate: roughage ratio of 50: 50 and 13% of crude protein on a dry matter basis. To estimate changes in body composition inside the range of weights included in the trial, linear regression equations of log protein (kg), fat (kg) and energy (Mcal) as a function of log empty-body-weight (EBW), in kg, were fitted. Energy requirements for maintenance were obtained as estimated heat production at zero level of energy intake. Buffaloes submitted to fattening in feedlot presented early body fat deposition, and had with the same live weight lower protein content and higher fat content and energy per unit weight than european-zebu crossbred cattle.
Descrição
Palavras-chave
energy, fat, maintenance, protein, stage of maturity
Como citar
Buffalo Bulletin. Bangkok: Int Buffalo Information Ctr, v. 32, p. 840-843, 2013.