Consumption, apparent digestibility and nutrient balance of diets with bovine milk whey for goats.

• Autor(a) principal: ARAÚJO, A. R.
• Data de Publicação: 2020
• Outros Autores: MUIR, J. P., VASCONCELOS, A. M. de, POMPEU, R. C. F. F., GUEDES, L. F., COSTA, C. dos S., CARNEIRO, M. S. de S., CAMPOS, W. E., ROGERIO, M. C. P.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
• Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1126817; http://dx.doi.org/10.5433/1679-0359.2020v41n5p1719
• topic: Dairy by-products; Apparent digestibility; Caprino; Cabrito; Nutrição Animal; Alimento Para Animal; Soro de Leite; Small ruminants; Ruminant nutrition; Kids (goats); Animal feeders; Animal feeding; Byproducts; Nutrients; Nutrient balance; Nitrogen balance

Abstract: Increasing milk production in countries such as Brazil, India and Pakistan implies the generation of dairy by-products such as nutrient-rich bovine whey which, if used in feeding small ruminants would reduce environmental waste and add value to this by-product. Twenty entire male kids weighing an average 17 kg and 5 months age were used. The diet control was composed by Aruana hay, milled whole maize, pelleted soybean and limestone. Bovine cheese whey at 1.5; 3.0 and 4.5% (DM basis) was added to experimental diets. Variables measured included intake, nutrient apparent digestibility, energy balance, and nitrogen balance. Regression equations and Pearson correlations (P ? 0.05) were determined. The 3% diet resulted in greater ether extract (EE) (g/kg0.75) and digestible EE (P ? 0.05) concentrations compared to 0% whey. The consumption of cellulose (g/kg0.75) was greater (P ? 0.05) for kids on the 3.0% diet compared to 0 or 1.5%. Nutrient apparent digestibility was not affected (P > 0.05) by the inclusion of whey. Kids on the 4.5% diet excreted more (P - 0.05) fecal N than those fed no whey; these also retained less N (P ? 0.05) compared to animals fed 3.0% or less whey in their diet. All diets resulted in positive energy and nitrogen balances. Bovine whey can be included in male kid diets up to 4.5% of diet without negatively affecting consumption or apparent digestibility of those diets. [Consumo, digestibilidade aparente e balanço de nutrientes de dietas com soro de leite bovino para caprinos].