000			03194nab a2200361 i 4500
003			BR-BrBNA
005			20250428182426.0
008			250428b2020 bl.ar|pooa||| 00| 0 eng |
040			_aBR-BrBNA _beng
072			_aL50 _b5240
072			_aL51
100			_aAraujo, Cintia Mirely de
100			_aBatista, Ângela Maria Vieira
100			_aCarvalho, Francisco Fernando Ramos de
100			_aSilva, Márcia Pereira da
100			_aSilva, Alenice Ozino
100			_aSouza, Anaiane Pereira
100			_aMedeiros, Ariosvaldo Nunes de
245			_aInclusion of Opuntia stricta (Haw.) in sheep diets affects nutrition and the physicochemical characteristics of the rumen content
500			_aPublicação on-line; 36 ref.; 2 illus; 4 tables; Sumaries (En)
520			_a ABSTRACT - The aim of this study was to evaluate the effects of the inclusion of the cactus Opuntia stricta (Haw.) in sheep diets on the feed intake, digestibility, fermentation, and physicochemical characteristics of the ruminal digesta. Five sheep cannulated in the rumen (61.5±9.5 kg body weight) were assigned in a Latin square design (5×5), with five diets and five experimental periods of 21 days each. The first 14 days were the adaptation period, and data were collected over the following seven days, making the total duration of the experiment 105 days. The diets included a control diet and four diets containing cactus at 121, 245, 371, and 500 g/kg of dry matter (DM). The diets had a forage:concentrate ratio of 65:35. The inclusion of cactus increased the DM intake and non-fiber carbohydrates, but reduced the neutral detergent fiber intake. It also increased the apparent digestibility of the DM, reduced the digesta density 4 h after feeding, and increased the production of ruminal fluid foam. The inclusion of cactus quadratically affected the DM rumen turnover, with the lowest value observed in the 336.5 g/kg cactus diet. The DM ruminal disappearance rate increased with the inclusion of cactus to the diets and quadratically affected the ruminal pH, with the highest value found in the 150 g/kg cactus diet. The concentrations of short-chain fatty acids (SCFA) increased, but the acetate:propionate ratio decreased with the inclusion of cactus at 500 g/kg DM. Taken together, our findings indicate that the evaluated spineless cactus can be added to sheep diets up to the level of 500 g/kg DM. The inclusion of O. stricta (Haw.) improves feed intake, DM digestibility, and SCFA and modifies the physicochemical characteristics of the ruminal digesta. Keywords: degradation rate, feed evaluation, ruminal ammonia, rumen metabolism
650			_aOVINO
650			_aDIETA
650			_aALIMENTO ALTERNATIVO
650			_aRÚMEN
650			_aPROPRIEDADE FÍSICO-QUÍMICA
650			_aDIGESTIBILIDADE
650			_aMETABOLISMO
773	0		_03545 _9317600 _dViçosa-MG Sociedade Brasileira de Zootecnia 1997 _o2024-4310 _tRevista Brasileira de Zootecnia (Brazil) _x1516-3598 _gv. 49 p. 1-12; (2020) _wBR2025000657
856			_uhttps://www.scielo.br/j/rbz/a/fnqLDhXPqcgdjZYKpJWXq5D/?format=pdf&lang=en
942			_cANA
999			_c331243 _d331243