Data/hora: 17/06/2024 15:27:52

Provedor de dados: | 96
País: | Brazil
Título: | Intake, performance and nutrient digestibility of sheep fed sugarcane treated and ensiled with calcium oxide or urea
Autores: | Magalhães,Albertí Ferreira; Pires,Aureliano José Vieira; Carvalho,Gleidson Giordano Pinto de; Silva,Fabiano Ferreira da; Nascimento Filho,Carlos Souza; Carvalho,Aline Oliveira.
Data: | 2013-10-01
Ano: | 2013
Palavras-chave: | Calcium/phosphorus ratio; Chemical additives; Lime; Roughage; Silage.
Resumo: | The objective of this study was to evaluate intake, performance and nutrient digestibility of sheep supplemented with sugarcane ensiled with four levels of calcium oxide (0.0, 0.8, 1.6 and 2.4%) and urea (1.5%), on a natural matter basis. Twenty castrated Santa Ines lambs with 24.09 kg average weight were housed in individual 1.5 m² pens, distributed in a completely randomized design. The diet supplied had a roughage:concentrate ratio of 70:30 and the experimental period lasted 77 days, of which 14 days were used for adaptation to the diet and three 21-day periods for data collection. No differences were observed for the average daily intake of dry matter, ether extract, neutral detergent fiber, neutral detergent fiber corrected for ash and protein, total carbohydrates, hemicellulose and total digestible nutrients. The treatment with urea showed differences for the intake (kg/day) of crude protein, acid detergent fiber and non-fibrous carbohydrates. There was no effect of diets on the digestibility of dry matter, ether extract, neutral detergent fiber, acid detergent fiber or total digestible nutrients, but there was a quadratic effect for total carbohydrates and increasing linear effect for non-fibrous carbohydrates. The calcium intake increased as the levels of calcium oxide in the sugarcane were elevated. The calcium:phosphorus ratio in the silage of calcium oxide was different from the silage with urea and control. No effect was observed for the performance characteristics of sheep. Sugarcane silages with calcium oxide levels of up to 2.4% or with urea do not improve the intake or weight gain of sheep.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013001000001
Editor: | Sociedade Brasileira de Zootecnia
Relação: | 10.1590/S1516-35982013001000001
Formato: | text/html
Fonte: | Revista Brasileira de Zootecnia  v.42 n.10 2013
Fonte: | info:eu-repo/semantics/openAccess