RT Journal Article
T1 Using dried orange pulp in the diet of dairy goats: effects on milk yield and composition and blood parameters of dams and growth performance and carcass quality of kids
A1 Guzmán Guerrero, José Luis
A1 Pérez Ecija, A.
A1 Zarazaga Garcés, Luis Ángel
A1 Delgado Pertiñez, Manuel
AB Although dried orange pulp (DOP) may conveniently replace cereals in ruminant diets, few studies have considered similar dietsubstitution for goats. We hypothesised that DOP could replace cereal-based concentrate in goat diets without detrimental effectson growth performance and carcass quality of suckling kids and milk performance and blood biochemical parameters of dams inearly lactation. We also hypothesised that DOP substitution may increase the levels of antioxidants, such as phenolic compoundsand vitamin E, in milk and improve its total antioxidant capacity (TAC). Therefore, 44 primiparous Payoya dairy goats wereallocated to three experimental groups, each fed a different diet: control (CD, n = 14) based on a commercial concentrate withalfalfa hay as forage; and DOP40 (n = 16) in which 40% and DOP80 (n = 14) in which 80% of the cereal in the concentrate werereplaced by DOP. The experiment lasted from the final month of pregnancy to 55 days postpartum. The DOP diets did not affectsuckling kids’ carcass quality, but at 28 days, led to improvement in live weight (LW) and average daily gain (ADG) from birth,although no differences were found between DOP40 and DOP80 (for CD, DOP40 and DOP80, LW at 28 days was 8.00, 8.58 and8.34 kg and ADG was 184, 199 and 195 g/day, respectively). Diet had no significant effect on milk yield (average daily milkyield and total yield at 55 days were 1.66 l/day and 90.6 l, respectively) and commercial and fatty acid composition. Nevertheless,α-tocopherol, total phenolic compound (TPC) and TAC concentration in milk increased with substitution of cereals by DOP(for CD, DOP40 and DOP80, concentration of α-tocopherol was 21.7, 32.8 and 42.3 μg/100 g, TPCs was 63.5, 84.1 and 102 mggallic acid equivalents/l, and TAC was 6.63, 11.1 and 12.8 μmol Trolox equivalents/ml, respectively). Every plasma biochemistryparameter considered was within reference values for healthy goats; therefore, no pathological effect was detected for thesevariables due to dietary treatment. However, DOP diets caused a reduction in plasmatic creatine kinase and aspartateaminotransferase, implying reduced oxidative damage to muscles. In conclusion, DOP may be an interesting alternative to cerealsin early lactation goat diets for increasing farmers’ income and the healthy antioxidant capacity of milk.
PB Cambridge University Press
SN 1751-732X
YR 2020
FD 2020-10
LK http://hdl.handle.net/10272/18969
UL http://hdl.handle.net/10272/18969
LA eng
NO Guzmán Guerrero, J. L., Pérez Ecija, A., Zarazaga Garcés, L. A. ... Delgado Pertíñez, M. (2020). Using dried orange pulp in the diet of dairy goats: effects on milk yield and composition and blood parameters of dams and growth performance and carcass quality of kids. Animal, 14(10), 2212–2220. DOI: https://doi.org/10.1017/s1751731120000932
DS Repositorio Institucional de la Universidad de Huelva
RD 14 jul 2026