Limits of grape byproduct inclusion in diets for lambs: Zinc supplementation to prevent copper poisoning.
Res Vet Sci
; 124: 334-337, 2019 Jun.
Article
in En
| MEDLINE
| ID: mdl-31048181
ABSTRACT
The aims of the current study were to assess the inclusion levels of grape byproduct replacing jiggs hay in lambs diets and to evaluate signs of copper poisoning. Thirty-four Texel and Corriedale crossbred female lambs were used in a randomized block experimental design. The treatments comprised four levels of grape byproduct (0; 100; 200 and 300â¯g/kg DM) in replacement of jiggs hay. The diets were adjusted to the same ZnCu ratio (61) of the basal diet. Grape byproduct consumption at up to 30%, led to similar weight gain in the different treatments (Pâ¯=â¯.92), which was suitable for growing lambs. Grape byproduct in the diet had linear effect on GGT (Pâ¯<â¯.001) and AST (Pâ¯<â¯.0001) enzymes as well as on total bilirubin (Pâ¯=â¯.05). In addition, the highest grape byproduct addition showed the highest consumption of hay (Pâ¯<â¯.01). Hay replacement by grape byproduct at up to 300â¯g/kg in the DM was satisfactory to weight gain and did not negatively affect feed intake and weight gain of growing lambs. Maintaining zinccopper ratio in sheep diets is not effective in preventing liver damage caused by increased dietary copper concentrations over a period of 70â¯days.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Zinc
/
Copper
/
Vitis
/
Sheep, Domestic
/
Heavy Metal Poisoning
Limits:
Animals
Language:
En
Journal:
Res Vet Sci
Year:
2019
Type:
Article
Affiliation country:
Brazil