000			04242nab a2200325 i 4500
003			BR-BrBNA
005			20250422224942.0
008			250422b2020 bl.ar|pooa||| 00| 0 eng |
040			_aBR-BrBNA _beng
072			_aL02 _b5214
100			_aCruz, Antonio Ariclezio Carlos
100			_aVéras, Antonia Sherlânea Chaves
100			_aOliveira, Júlio César Vieira de
100			_aSantos, Djalma Cordeiro dos
100			_aChagas, Juana Catarina Cariri
100			_aNeves, Maria Luciana Menezes Wanderley
100			_aMonteiro, Carolina Corrêa de Figueiredo
100			_aFerreira, Marcelo de Andrade
245			_aABSTRACT - This study was performed to identify the ideal amount of concentrate required for a diet based on cactus cladodes, sugarcane, and urea used to feed heifers. Twenty Girolando heifers (160±8.39 kg) were randomly distributed into four experimental treatments with 0, 0.40, 0.80, or 1.20 kg day−1 of concentrate. The basal diet contained [on dry matter (DM) basis] 38.1% sugarcane, 56.5% cactus cladodes [Opuntia stricta (Haw). Haw.], 0.5% common salt, 1.1% mineral mixture, and 3.8% urea plus ammonium sulfate. The concentrate contained [on DM basis] 87% corn meal and 13% soybean meal. The basal diet and the concentrate were formulated to provide 13% crude protein (CP). The intake of DM (4.34-4.96 kg day−1), organic matter (3.96- 4.98 kg day−1), CP (0.57-0.64 kg day−1), non-fibrous carbohydrates (2.20-2.61 kg day−1), and metabolizable energy (10.3-12.4 Mcal day−1) increased linearly with concentrate amount. Final body weight (196-224 kg), total body weight gain (36.9-61.2 kg), and average daily body weight gain (0.51-0.85 kg day−1) increased linearly with concentrate amount. The nitrogen balance was positive and increased linearly (54.8-62.3 g day−1) with concentrate amount. Based on the data, we recommend supplying six-monthold Girolando heifers (160 kg body weight) 1.20 kg concentrate day−1 added to a diet based on sugarcane and cactus cladodes plus urea for better productive and economic performance. Keywords: cactaceous, energy supplementation, non-protein nitrogen, reproduction,
500			_aPublicação on-line; 27 ref.; 6 tables; Sumaries (En)
520			_a ABSTRACT - This study was performed to identify the ideal amount of concentrate required for a diet based on cactus cladodes, sugarcane, and urea used to feed heifers. Twenty Girolando heifers (160±8.39 kg) were randomly distributed into four experimental treatments with 0, 0.40, 0.80, or 1.20 kg day−1 of concentrate. The basal diet contained [on dry matter (DM) basis] 38.1% sugarcane, 56.5% cactus cladodes [Opuntia stricta (Haw). Haw.], 0.5% common salt, 1.1% mineral mixture, and 3.8% urea plus ammonium sulfate. The concentrate contained [on DM basis] 87% corn meal and 13% soybean meal. The basal diet and the concentrate were formulated to provide 13% crude protein (CP). The intake of DM (4.34-4.96 kg day−1), organic matter (3.96- 4.98 kg day−1), CP (0.57-0.64 kg day−1), non-fibrous carbohydrates (2.20-2.61 kg day−1), and metabolizable energy (10.3-12.4 Mcal day−1) increased linearly with concentrate amount. Final body weight (196-224 kg), total body weight gain (36.9-61.2 kg), and average daily body weight gain (0.51-0.85 kg day−1) increased linearly with concentrate amount. The nitrogen balance was positive and increased linearly (54.8-62.3 g day−1) with concentrate amount. Based on the data, we recommend supplying six-monthold Girolando heifers (160 kg body weight) 1.20 kg concentrate day−1 added to a diet based on sugarcane and cactus cladodes plus urea for better productive and economic performance. Keywords: cactaceous, energy supplementation, non-protein nitrogen, reproduction,
650			_aNOVILHO LEITEIRO
650			_aDIETA
650			_aMATÉRIA SECA
650			_aSUPLEMENTO ALIMENTAR
773	0		_03545 _9317600 _dViçosa-MG Sociedade Brasileira de Zootecnia 1997 _o2024-4310 _tRevista Brasileira de Zootecnia (Brazil) _x1516-3598 _gv. 49 p. 1-8; (2020) _wBR2025000633
856			_uhttps://www.scielo.br/j/rbz/a/3Ry4PZBfXd6fxQTMRdwLqzr/?format=pdf&lang=en
942			_cANA
999			_c331151 _d331151