Nutrient digestibility and changes in feeding behavior of cattle fed cottonseed and vitamin E
Sci. agric.
; 76(2): 112-122, Mar.-Apr. 2019. tab, graf
Article
em En
| VETINDEX
| ID: vti-740859
Biblioteca responsável:
BR68.1
ABSTRACT
High lipid concentration in ruminant diets often harms nutrient digestibility and feed intake; thus, a protected lipid and antioxidant source can be considered as an alternative for improving diet energy without putting animal production at a disadvantage. The aim of this study was to evaluate the dry matter intake (DMI), nutrient digestibility and feeding behavior of cattle fed cottonseed and vitamin E. Six cannulated cows, non-pregnant, non-lactating were distributed in a replicated 3 × 3 Latin Square design. Feed was offered ad libitum twice daily. Treatments were 1) Control, 2) CS 30 % cottonseed included; and 3) CSVitE 30 % cottonseed plus 500 IU VitE included. Data were analyzed by SAS (Statistical Analysis System, v.9.3) and the significance was declared at p < 0.05. Diets with cottonseed had 22 % greater digestibility of ether extract and 9 % lower digestibility of non-fiber-carbohydrates compared to the control. Treatments with cottonseed had 13 % higher time eating, 48 % more ruminating, 34 % more chewing and 17 % lower time idling compared to the control. Molar proportion of propionate was 36 % higher and the butyrate and acetatepropionate ratio were 27 % and 30 % lower, respectively, for the cottonseed treatments compared to the control. Including cottonseed up to 30 % can be used to increase diet energy density leading to improvements in feeding behavior and ruminal parameters. The inclusion of Vitamin E did not result in benefits to cattle when it was combined with cottonseed. Further studies should be undertaken to evaluate vitamin E levels in association with different amounts and lipid sources.(AU)
Palavras-chave
Texto completo:
1
Base de dados:
VETINDEX
Assunto principal:
Vitamina E
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Gossypium
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Comportamento Alimentar
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Ração Animal
Limite:
Animals
Idioma:
En
Revista:
Sci. agric
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Sci. agric.
Ano de publicação:
2019
Tipo de documento:
Article
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Project document