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Effects of supplements containing different additives on nutritional and productive performance of beef cattle grazing tropical grass.
- Source :
-
Tropical animal health and production [Trop Anim Health Prod] 2017 Jun; Vol. 49 (5), pp. 983-988. Date of Electronic Publication: 2017 Apr 07. - Publication Year :
- 2017
-
Abstract
- A grazing trial was carried out to evaluate the inclusion of three feed additives in supplements (crude protein, CP 230 g/kg dry matter, DM) on the performance, voluntary intake, and digestibility of beef heifers grazing Brachiaria decumbens (CP 81 and neutral detergent fiber, NDF 615 g/kg DM). Thirty-five Nellore heifers (21 months of age and 383 ± 6.29 kg of body weight, BW) were used in a completely randomized design. The treatments were as follows: no supplement (control); supplement fed at 1 kg/animal/day without additives (S); supplement with monensin (S + M); supplement with yeast culture (S + YC); and supplement with enzyme complex (S + EC). All of the supplemented heifers had greater (P < 0.1) average daily gain (∼0.186 kg/day) compared to the control treatment (0.014 kg/day). Average daily gain and final BW were similar (P > 0.1) among supplemented heifers. Monensin inclusion in the supplement decreased (P < 0.1) forage DM (expressed as g/kg BW) and NDF intake (expressed as kg/day and as g/kg BW). All of the feed additive inclusions decreased (P < 0.1) NDF digestibility. In conclusion, the heifers' performance was improved by concentrate supplementation. However, the inclusion of additives did not enhance this effect.
- Subjects :
- Animal Feed analysis
Animal Nutritional Physiological Phenomena
Animals
Brachiaria
Cattle growth & development
Diet veterinary
Dietary Fiber metabolism
Female
Herbivory
Monensin administration & dosage
Nitrogen metabolism
Random Allocation
Yeast, Dried administration & dosage
Cattle physiology
Digestion drug effects
Monensin metabolism
Yeast, Dried metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1573-7438
- Volume :
- 49
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Tropical animal health and production
- Publication Type :
- Academic Journal
- Accession number :
- 28386840
- Full Text :
- https://doi.org/10.1007/s11250-017-1286-8