.jpg)
Pedro Melendez, Romina Ramirez, María P. Marin, Mario Duchens, Pablo Pinedo
Animal Nutrition Volume 6, Issue 1, March 2020, Pages 47-53
Comparación entre expeler de linaza y canola sobre el consumo de concentrado, e indicadore sanguineos de la inflamacion en terneros de lecheria.
Este estudio comparó el uso de expeller de linaza y expeller de canola en el concentrado de iniciación de terneros de 0 a 60 dias.
Los terneros que consumieron linaza tuvieron una mejor respuesta inmunitaria que terneros alimentados con canola. Esto se puede deber al mayor contenido de acidos grasos omega-3 en el expeller de linaza
Abstract
The objective of this study was to compare the effect of linseed and canola expeller on average daily weight gain (ADG), concentrate intakes, incidence of diarrhea, serum haptoglobin, interleukin (IL)-1, and resolvin-E1 in female Holstein calves from birth to weaning. A sample size of 20 calves per group was calculated and were randomly allocated at the time of birth. Linseed group (LIN) was fed a starter with linseed expeller, while canola group (CAN) received a similar concentrate, but with canola expeller. Both expellers were included at a rate of 25% dry matter (DM) basis of the starter. Pasteurized waste milk was fed twice a day until weaning. Calves were weighed at birth, 30, and 60 d of age. Starter intake was evaluated daily from 5 to 60 d. A blood sample was obtained at birth, 14, 28, 35, and 49 d of age, and bovine serum resolvin-E1, haptoglobin, and IL-1 were assayed by commercial enzyme-linked immuno-sorbent assay (ELISA) kits. Incidence of diarrhea and the duration of the events were also recorded. The effect of the interaction group by time on body weight (BW) and starter intake was not significant (P > 0.05). Average daily gains (ADG) from 0 to 60 d for CAN and LIN groups were 0.680 and 0.675 kg/d (P > 0.05), respectively. Incidences of diarrhea were 25% and 45% for CAN and LIN groups, respectively (P ¼ 0.18). LIN group had greater concentrations of IL-1 at d 21, haptoglobin at d 7, and resolving-E1 at d 14 and 49 than CAN group, respectively. It is concluded that BW at weaning, ADG, and concentrate intakes were not different between groups fed starters containing linseed or canola expeller (25% in-clusion). The concentrations of cytokines and haptoglobin were the greatest in LIN group.