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Title: Docosahexaenoic acid in the goat kid diet: Effects on immune system and meat quality
Authors: Moreno-Indias, I.
Morales-Delanuez, A.
Hernández Castellano, Lorenzo Enrique 
Sánchez-Macías, D.
Capote, J. 
Castro, N. 
Argüello, A. 
Keywords: Milk Replacer
Live Weight
Carcass Composition, et al
Issue Date: 2012
Publisher: 0021-8812
Journal: Journal of Animal Science 
Abstract: The effect of dietary docosahexaenoic acid (C22:6n3; DHA) supplementation on meat quality and immunity in goat (Capra hircus) kids was examined. Goat kids (n = 30) were fed 1 of 3 experimental diets: goat milk (GM), cow (Bos taurus) milk (CM), and CM supplemented with DHA (CM-DHA). Animals were fed ad libitum twice daily and weighed twice each week. Blood samples were collected by jugular venipuncture daily during the first 10 d of life and were subsequently collected every 5 d until slaughter at a BW of 8 kg. Carcass size (linear measurements) and weight, as well as meat pH, color, tenderness, and chemical composition were determined. Fatty acid profiles of intramuscular, peri-renal, pelvic, subcutaneous, and intermuscular fats were analyzed. Blood IgG and IgM concentrations, complement system activity (classical and alternative pathways), and chitotriosidase activity were recorded. Results indicated that the diet containing DHA did not affect (P > 0.05) carcass linear measurements, meat quality characteristics, or proximate composition of the meat. However, C22: 6n3 fatty acid levels, mainly in intramuscular fat, were enriched (P < 0.05) in CM-DHA animals, and the n-6 to n-3 PUFA ratio was improved (P < 0.05). No differences (P > 0.05) in immune function were observed among groups. In conclusion, powdered whole CM is an effective option for feeding goat kids, and the inclusion of DHA to CM increases the quantity of this fatty acid in the meat.
ISSN: 0021-8812
DOI: 10.2527/jas.2011-4351
Source: Journal of Animal Science[ISSN 0021-8812],v. 90, p. 3729-3738
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