Título:	Intake, digestibility, nitrogen balance and performance in lamb fed spineless cactus silage associated with forages adapted to the semiarid environment Spineless cactus silages in diets for lambs.
Autoria:	SILVA, T. S. ARAUJO, G. G. L. de SANTOS, E. M. OLIVEIRA, J. S. de GODOI, P. F. A. GOIS, G. C. PERAZZO, A. F. RIBEIRO, O. L. TURCO, S. H. N. CAMPOS, F. S.
Afiliação:	TIAGO SANTOS SILVA, UFPB GHERMAN GARCIA LEAL DE ARAUJO, CPATSA EDSON MAURO SANTOS, UFPB JULIANA SILVA DE OLIVEIRA, UFPB PAULO FERNANDO ANDRADE GODOI, Universidade Federal do Agreste de Pernambuco, Garanhuns-PE GLAYCIANE COSTA GOIS, UNIVASF ALEXANDRE FERNANDES PERAZZO, UFPI OSSIVAL LOLATO RIBEIRO, Universidade Federal do Recôncavo Bahiano, Cruz das Almas/BA SILVIA HELENA NOGUEIRA TURCO, UNIVASF FLEMING SENA CAMPOS, Universidade Federal do Maranh ̃ao, Chapadinha -MA.
Ano de publicação:	2023
Referência:	Livestock Science, v. 268, 105168, 2023.
Conteúdo:	The study aimed to evaluate the intake, apparent digestibility, nitrogen balance and productive performance in lamb fed spineless cactus silage associated with forages adapted to the semiarid environment. Forty intact crossbred lambs, with an average body weight of 22.65 ± 1.01 kg, were distributed in a completely randomised design with five treatments (diets based on: spineless cactus silage (SCS), spineless cactus + buffelgrass silage (SCBS), spineless cactus + gliricidia silage (SCGS), spineless cactus + pornunça silage (SCPS) and corn silage (CS; witness) and eight animals per treatment. Intake, apparent nutrient digestibility, nitrogen balance, and performance of animals were evaluated. The SCGS diet showed higher intake of dry matter and organic matter (P<0.05). The SCGS and SCPS diets showed the highest crude protein intake (P = 0.005). Lower intake of ether extract was found in animals receiving diets containing SCS and SCBS (P = 0.001). SCBS and SCGS provided a higher intake of neutral detergent fiber (P = 0.015). SCS and SCGS diets displayed a higher intake of non-fiber carbohydrates (P = 0.003). SCGS diets displayed the highest total digestible nutrients intake (P = 0.001). SCPS diet showed lower digestibility of dry matter, organic matter, and crude protein (P<0.05). SCGS diet showed a lower digestibility coefficient for ether extract (P = 0.009). SCPS diet showed lower digestibility coefficients for neutral detergent fiber (P = 0.022). SCS and SCPS diets showed lower digestibility coefficients for non-fiber carbohydrates (P = 0.011). The CS promoted lower results for intake (P = 0.003), absorbed (P = 0.003) and balance (P = 0.012) for nitrogen. SCPS diet promoted higher excretion of nitrogen via faeces (P = 0.001) and less excretion of nitrogen via urine (P = 0.033). SCGS diet provided a higher final weight (P = 0.006). SCS and SCGS diets provided more significant body weight gain (P = 0.001). Combining spineless cactus with a roughage base allowed weight gains over 200 g/day, proving to be efficient in diets for feedlot lamb and gains similar or superior to corn-based diets.
Thesagro:	Palma Forrageira Pastagem Capim Buffel Gliricidia Digestibilidade Cordeiro
NAL Thesaurus:	Pastures
Palavras-chave:	Semiárido Pornunça Desempenho produtivo Balanço de nitrogênio
ISSN:	1871-1413
Digital Object Identifier:	https://doi.org/10.1016/j.livsci.2023.105168
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CPATSA)