Exogenous enzymes improve performance and carcass traits of feedlot cattle fed high-grain diet
| Autor: | Cleiton Pagliari Sangali, Osmair Flavio Stuani, Egon Henrique Horst, Mikael Neumann, Ricardo Araújo Castilho, Guilherme Fernando Mattos Leão |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
amylase Feedlot cattle animal diseases Biology Feed conversion ratio high-energy diet Cattle feeding 03 medical and health sciences Animal science Dry matter Amylase Completely randomized design lcsh:SF1-1100 xylanase 0402 animal and dairy science food and beverages 04 agricultural and veterinary sciences 040201 dairy & animal science corn 030104 developmental biology non-starch polysaccharides Exogenous enzymes Xylanase biology.protein Animal Science and Zoology lcsh:Animal culture |
| Zdroj: | Revista Brasileira de Zootecnia v.47 2018 Revista Brasileira de Zootecnia Sociedade Brasileira de Zootecnia (SBZ) instacron:SBZ Revista Brasileira de Zootecnia, Vol 47, Iss 0 (2018) |
| ISSN: | 1806-9290 1516-3598 |
| Popis: | The objective of this study was to evaluate the effects of supplementation of two different enzymatic complexes, fibrolytic (NSPases) or amylolytic (EXP3066) enzymes, on growth performance, digestibility, behavior, and carcass characteristics of feedlot cattle. Thirty-six ½ Angus yearling bulls with an average initial weight of 391±5.0 kg were used in this experiment blocked by weight in a completely randomized design divided in three treatments: control, NSPases, and EXP3066. The basal diet was composed of 85% whole corn grain and 15% nucleus. NSPases increased average daily gain on days 63 and 84, and gain:feed ratio on days 42, 63, and 84. Total carcass weight and carcass daily gain were improved by 4.8% and up to 6.0% with EXP3066 and NSPases supplementations, respectively. The group that received NSPases supplementation showed even greater carcass feed efficiency when compared with animals in the control group. There was an increase in apparent dry matter digestibility and a decrease of fecal whole grain residual percentage with enzyme supplementation. Enzyme supplementation affected hot carcass weight and EXP3066 provided greater values for ribeye area and marbling compared with control. Exogenous enzymes improve performance and carcass traits in feedlot cattle fed high-grain diet. |
| Databáze: | OpenAIRE |
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