Plant extracts containing cinnamaldehyde, eugenol and capsicum oleoresin added to feedlot cattle diets ruminal environment, short term intake pattern and animal performance

The objective was to evaluate effects of adding a blend of essential oil compounds on ruminal fermentation and animal performance of feedlot cattle in comparison to sodium monensin. In Exp. 1, 24 angus steers [initial weight 141 more or less 6.6kg] were blocked by weight into 4 groups and randomly a...

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Detalles Bibliográficos
Otros Autores: Geraci, José Ignacio, Garciarena, Alberto Daniel, Gagliostro, Gerardo A., Beauchemin, Karen A., Colombatto, Darío
Formato: Artículo
Lenguaje:Inglés
Materias:
BOS
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2012Geraci.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
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245 1 0 |a Plant extracts containing cinnamaldehyde, eugenol and capsicum oleoresin added to feedlot cattle diets   |b ruminal environment, short term intake pattern and animal performance 
520 |a The objective was to evaluate effects of adding a blend of essential oil compounds on ruminal fermentation and animal performance of feedlot cattle in comparison to sodium monensin. In Exp. 1, 24 angus steers [initial weight 141 more or less 6.6kg] were blocked by weight into 4 groups and randomly allocated to 8 pens of 3 steers. Treatments were monensin [46.7mg/kg dietary dry matter [DM]], or plant extracts [PE; 266mg/steer/d of cinnamaldehyde and eugenol+133mg/steer/d of capsicum oleoresin] added to a mineral mixture. The experiment lasted 84d and was divided in 2 periods of 0-44 and 45-84d. Diets were fed once daily and consisted of a corn grain based concentrate fed ad libitum, plus 200g alfalfa hay/steer/d as fed. The DM intake, average daily gain [ADG], feed conversion ratio [FCR] and rate of backfat deposition [BFD] were determined throughout the study. Short term intake patterns were evaluated by visual appraisal. In Exp. 2, two ruminally fistulated steers were used in a crossover design to determine how the ruminal fermentation variables pH, NH 3-N and volatile fatty acids [VFA] were affected by PE or monensin. Compared to monensin, PE did not alter overall DM intake [0.124kg/BW 0.75 versus 0.123kg/BW 0.75], FCR [0.21 versus 0.20], BFD [1.87mm/mo versus 1.76mm/mo], or longissimus dorsi muscle [LM] area [6.56cm 2/mo versus 6.69cm 2/mo] for PE and monensin, respectively. However, a treatmentÃ-period interaction occurred [P=0.02] for ADG, with steers fed PE having a higher [P=0.01] ADG in the second period [1.43kg/d versus 1.23kg/d for PE and monensin, respectively]. Short term intake patterns were not altered by PE compared to monensin, as steers visited the feeders a similar number of times and the length of each visit was also similar [11.5min versus 10.6min and 8.28min versus 9.57min for PE and monensin, respectively]. Although ruminal pH was not affected [5.55 versus 6.05 for PE and monensin, respectively], ruminal NH 3-N was lowered by PE [10.78mg/dl versus 20.05mg/dl, P=0.02]. Ruminal total VFA concentrations did not differ between treatments [80.7mM versus 62.5mM], and feeding PE did not alter ruminal acetate [48.5mol/100mol versus 58.2mol/100mol], or propionate [32.8mol/100mol versus 25.2mol/100mol, P=0.65] proportions. Results show that steers fed PE performed equivalently to those fed monensin in a high concentrate diet, and that some productive variables were improved with PE feeding. 
653 0 |a FEEDLOT 
653 0 |a INTAKE PATTERN 
653 0 |a PERFORMANCE 
653 0 |a PLANT EXTRACTS 
653 0 |a ANIMALIA 
653 0 |a BOS 
653 0 |a CAPSICUM OLEORESIN 
653 0 |a MEDICAGO SATIVA 
653 0 |a ZEA MAYS 
700 1 |a Geraci, José Ignacio  |9 21186 
700 1 |a Garciarena, Alberto Daniel  |9 64028 
700 1 |a Gagliostro, Gerardo A.  |9 23486 
700 1 |a Beauchemin, Karen A.  |9 72076 
700 1 |9 10874  |a Colombatto, Darío 
773 |t Animal Feed Science and Technology  |g Vol.176, no.1-4 (2012), p.123-130 
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900 |a ^aGeraci^bJ.I.^tInstituto Nacional de Tecnología Agropecuaria, Km 73.5 Ruta Nacional 226, 7620 Balcarce, Argentina 
900 |a ^aGarciarena^bA.D.^tResearch Centre, Agriculture and Agri-Food Canada, Lethbridge, AB, T1J 4B1, Canada 
900 |a ^aGagliostro^bG.A.^tDepartamento de Producción Animal, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, C1417DSQ Buenos Aires, Argentina 
900 |a ^aBeauchemin^bK.A.^tConsejo Nacional de Investigaciones Científicas y Técnicas [CONICET], Argentina 
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900 |a FEEDLOT 
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900 |a The objective was to evaluate effects of adding a blend of essential oil compounds on ruminal fermentation and animal performance of feedlot cattle in comparison to sodium monensin. In Exp. 1, 24 angus steers [initial weight 141 more or less 6.6kg] were blocked by weight into 4 groups and randomly allocated to 8 pens of 3 steers. Treatments were monensin [46.7mg/kg dietary dry matter [DM]], or plant extracts [PE; 266mg/steer/d of cinnamaldehyde and eugenol+133mg/steer/d of capsicum oleoresin] added to a mineral mixture. The experiment lasted 84d and was divided in 2 periods of 0-44 and 45-84d. Diets were fed once daily and consisted of a corn grain based concentrate fed ad libitum, plus 200g alfalfa hay/steer/d as fed. The DM intake, average daily gain [ADG], feed conversion ratio [FCR] and rate of backfat deposition [BFD] were determined throughout the study. Short term intake patterns were evaluated by visual appraisal. In Exp. 2, two ruminally fistulated steers were used in a crossover design to determine how the ruminal fermentation variables pH, NH 3-N and volatile fatty acids [VFA] were affected by PE or monensin. Compared to monensin, PE did not alter overall DM intake [0.124kg/BW 0.75 versus 0.123kg/BW 0.75], FCR [0.21 versus 0.20], BFD [1.87mm/mo versus 1.76mm/mo], or longissimus dorsi muscle [LM] area [6.56cm 2/mo versus 6.69cm 2/mo] for PE and monensin, respectively. However, a treatmentÃ-period interaction occurred [P=0.02] for ADG, with steers fed PE having a higher [P=0.01] ADG in the second period [1.43kg/d versus 1.23kg/d for PE and monensin, respectively]. Short term intake patterns were not altered by PE compared to monensin, as steers visited the feeders a similar number of times and the length of each visit was also similar [11.5min versus 10.6min and 8.28min versus 9.57min for PE and monensin, respectively]. Although ruminal pH was not affected [5.55 versus 6.05 for PE and monensin, respectively], ruminal NH 3-N was lowered by PE [10.78mg/dl versus 20.05mg/dl, P=0.02]. Ruminal total VFA concentrations did not differ between treatments [80.7mM versus 62.5mM], and feeding PE did not alter ruminal acetate [48.5mol/100mol versus 58.2mol/100mol], or propionate [32.8mol/100mol versus 25.2mol/100mol, P=0.65] proportions. Results show that steers fed PE performed equivalently to those fed monensin in a high concentrate diet, and that some productive variables were improved with PE feeding. 
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