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Effect of protected fat supplementation to lactating goats on growth and fatty acid composition of perirenal fat in goat kids

Published online by Cambridge University Press:  18 August 2016

L. Martín ,
P. Rodríguez ,
A. Rota ,
A. Rojas ,
M. R. Pascual ,
D. Patón  and
J. Tovar
P. Rodríguez
Affiliation:
Departamento de Zootecnia, Facultad de Veterinaria, 10.071 Cáceres, Spain
A. Rota
Affiliation:
Departamento de Zootecnia, Facultad de Veterinaria, 10.071 Cáceres, Spain
A. Rojas
Affiliation:
Departamento de Zootecnia, Facultad de Veterinaria, 10.071 Cáceres, Spain
M. R. Pascual
Affiliation:
Departamento de Zootecnia, Facultad de Veterinaria, 10.071 Cáceres, Spain
D. Patón
Affiliation:
Departamento de Zootecnia, Facultad de Veterinaria, 10.071 Cáceres, Spain
J. Tovar
Affiliation:
Departamento de Zootecnia, Facultad de Veterinaria, 10.071 Cáceres, Spain
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Abstract

An experiment was conducted to measure the response of goat kids to supplementary feeding of their dams with protected fat (calcium soap of fatty acids). At birth, 22 single male goat kids were distributed in two groups according to the dams’ diet supplemented with 0 (dam control diet, DCD) or 100 (dam protected fat, DPF) g/day of protected fat through lactation. Higher energy intake of dams given protected fat caused higher fat content of their milk (P < 0·01) and the fatty acid profile was affected with a reduction of lauric acid (P < 0.01) and myristic acid (P < 0.01) and an increase in palmitic acid (P < 0.01). Goat kids were suckled by their dams from birth until the end of the experiment and had access to a creep food from 7 days of age. Kids were slaughtered at 45 days of age. There was no significant response (P > 0Ό5) in terms of kid mean live-weight gain, being 172 g (DPF) compared with 148 g (DCD). Fatty acid composition of the perirenal fat showed some differences between groups. Fat composition of group DPF was significantly higher in palmitoleic, oleic and linoleic acid content. In addition, myristic, palmitic and stearic acid had lower values. Fat of goat kids of the DPF group was more unsaturated (43·3 g per 100 g) than fat from animals of the DCD group (32·5 g per 100 g). In the DPF group, oleic acid comprised most of the unsaturated fatty acid due to its important increase compared with fat composition of the DCD group. In conclusion, fatty acid composition of fat depot in goat kids can he modified by feeding of the dams through lactation, which could be useful for possible changes according to market demand.

Keywords

fatty acidsgoatsgrowthkidsprotected fat
Type
Research Article
Information
Animal Science , Volume 68 , Issue 1 , February 1999 , pp. 195 - 200
Copyright
Copyright © British Society of Animal Science 1999

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