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Abstract(s)
The objective of the study was to contribute to the characterization of the Serrana breed on the meat production aspects.
The study was carried out in 60 (Cabrito Transmontano) milk-fed kid carcasses (31 males and 29 females) to evaluate the
effects of sex and carcass weight (4, 6 and 8 kg) on some carcass conformation measurements; on longissimus dorsi
muscle thickness and fat thickness measurements; on regional joint carcass composition and finally on meat pH and
color. Furthermore a study on the relative growth of the carcass joints and its tissue composition, by means of logarithmic
transformation of the Huxley equation (Log y = Log a + b Log x) was undertaken. Finally, prediction equations of the
carcass composition were estimated by using both conformation and the longissimus dorsi measurements. An analysis of
linear association was carried out and those measurements which were significant were included in the linear regression
model applying a stepwise regression method. Results showed that sex did not affect the carcass conformation
measurements, as well as on the meat pH and color, but there were some differences on the carcass regional and tissue
composition, being the proportion of chump and breast joints, which contains more fat, higher in females than in males
(0.3% and 0.9% respectively). A significant effect of carcass weight was observed on the carcass yield, the conformation,
longissimus muscle thickness, fat thickness measurements, and regional and tissue compositions. In general, it can be
indicated that values of all measurements increased with the increment of carcass weight. FUJihermore, it was seen that
pH was higher in the lighter carcasses than in the 6 kg and 8 kg carcasses. The red index and the saturation were higher
in 8 kg carcasses than in the lighter carcasses. The allometry study indicated that limbs were precocious in growth in
relation with the· rest of the carcass and that the tissue that presented a more precocious growth was the bone (b=0.79),
whereas the muscle showed an isometric growth (b=1.05) and the fat a later growth (b=1.32).
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Citation
Jimenez-Badillo, R.; Rodrigues, Sandra; Pereira, Etelvina; Sañudo, C.; Teixeira, Alfredo (2008). Effect of sex and carcass weight (4, 6 e 8 kg) on carcass and meat quality of “Cabrito Transmontano” (PDO). In Proceedings of the 9th International Conference on Goats, Challenges and Opportunities of Small and Large Enterprises. Querétaro