Data/hora: 17/04/2024 12:34:33

Biblioteca(s): 	Embrapa Pecuária Sudeste.	
Data corrente: 	19/06/2019	
Data da última atualização: 	13/03/2023	
Autoria: 	BARRETO, A. do N.; SILVA, A. G. M.; ESTEVES, S. N.; JACINTO, M. A. C.; BARIONI JUNIOR, W.; BRANDÃO, F. Z.; PANTOJA, M. H. de A.; BOTTA, D.; ROMANELLO, N.; LEMES, A. P.; GIRO, A.; GARCIA, A. R.	
Afiliação: 	Andréa do Nascimento Barreto, UFPA; André Guimarães Maciel e Silva, UFPA; SERGIO NOVITA ESTEVES, CPPSE; MANUEL ANTONIO CHAGAS JACINTO, CPPSE; WALDOMIRO BARIONI JUNIOR, CPPSE; Felipe Zandonadi Brandão, UFF; Messy Hannear de Andrade Pantoja, USP; Daniela Botta, UFPA; Narian Romanello, UFF; Amanda Prudêncio Lemes, UNESP; Alessandro Giro, UFPA; ALEXANDRE ROSSETTO GARCIA, CPPSE.	
Título: 	Productive performance and reproductive characteristics of Morada Nova male lambs fed with high-energy diet.	
Ano de publicação: 	2019	
Fonte/Imprenta: 	Tropical Animal Health and Production, v. 51, p. 2481-2491, jun. 2019.	
DOI: 	https://doi.org/10.1007/s11250-019-01969-0	
Idioma: 	Inglês	
Conteúdo: 	Morada Nova breed sheep are without wool, tropicalized, small-sized animals, known for their high-quality meat and skin. Their body development naturally depends on the genetic potential and adequate nutritional support, which suggests that the offer of high-energy density diets positively influences their productive indicators. Thus, the present study investigated the effect of a high-energy diet for the Morada Nova lambs on body development and testicular function, considering their histomorphometric characteristics and seminal quality. Forty-two males (19.2 weeks, 20.7 ± 3.5 kg) were equally divided into two groups and fed with 2.05 Mcal (G7, n = 21) or 2.37 Mcal (G24, n = 21) of metabolizable energy/day, equivalent to 7% and 24% above the minimum for growing lambs. The animals were confined for 23 weeks (W0 to W23). Weight and body score differed significantly from the W1 (P < 0.05). From the W5, thoracic perimeter, body length, wither height, and rump attributes were higher in G24 (P < 0.05). The scrotal circumference and testicular volume were higher in G24 from the W3 (P < 0.05). Although testosterone levels were not affected (P = 0.05), the highest energy intake increased the diameter of the seminiferous tubules and the development of the epididymal epithelium (P < 0.05). This positively influenced the seminal quality and reduced the minor defects (21.87%vs. 17.13%) and the total spermatic defects (26.34%vs. 21.78%, P < 0.05). Thus, it is possible to employ higher
levels of dietary energy for Morada Nova young males to express higher productive efficiency and earlier reproductive attributes of interest.	
Palavras-Chave: 	Hair sheep; Sperm.	
Thesagro: 	Ovino; Ovis Aries.	
Thesaurus Nal: 	Morphometry; Sheep.	
Categoria do assunto: 	L Ciência Animal e Produtos de Origem Animal	
Registro original: 	Embrapa Pecuária Sudeste (CPPSE)	
Exemplares: 	CPPSE - (24791-1) - UPC - AP - DD - PROCI-2019.00031 - BAR - 2019.00037 - DIS