Correlation between lipid, cholesterol and fatty acid contents in the shoulder of castrated and non-castrated Santa Inês lambs

Abstract

-The objective of this study was to establish a correlation between the content of total lipids, cholesterol and fatty acid profile of the edible portion of the shoulders of 12 castrated and 12 non-castrated Santa Ines lambs, slaughtered at different ages (84, 168, 210, 252 days). Shoulders and the edible portion (muscle and fat) were weighed and stored at -5 °C. Castrated and uncastrated lambs increased their body weight and half carcass weight, respectively. The shoulder weight increased in the carcasses of uncastrated animals. The edible portion of the shoulders of castrated lamb has greater amount of total lipids (16.09 g/100 g). The cholesterol content was influenced by castration, reducing with age. Santa Ines castrated lambs, under semi-extensive conditions, presented larger amounts of C18:1 T11 and CLA in the edible portion of the shoulder.Castration causes no significant correlation between total lipids, cholesterol and total saturated and unsaturated fatty acids of the edible portion of Santa Ines shoulder lambs from 84 to 252 days of age.

Evaluation of Growth Performance, Blood Metabolites and Gene Expression Analysis in Egyptian Sheep Breeds, in Relation to Age

“…Present results indicated that Ossimi sheep have the largest value of live body weight (45.25 ± 1.98 Kg) at the third age category, and there weren't any significant differences between Rahmani and Barki breeds. The results of this study are in harmony with those previously reported by Almahdy et al (2000), Marai et al (2009), Khalifa et al (2013), Hassan (2017) and El-Malky et al (2019). They mentioned that the average live body weights were ranged from (51-53 kg) adult weight for the Ossimi and Rahmani breeds, and (44 kg) for the Barki breed.…”

“…In addition to at earlier ages, the needs of blood protein are very important to help in transportation of calcium and phosphorus and other substances in the blood by attachment to the albumin. Same results for breed effect found by Farghaly et al (2011) who documented that there were no significant differences due to breed and sex of sheep in total protein concentration; the Ossimi and Rahmani breeds showed similar mean of plasma total protein (7.00 vs. 6.97 gm/dl) respectively and the average concentration for males and females was 6.95 and 6.99 gm/dl and also El-Malky et al (2019) reported same trend for Ossimi and Barki.…”

“…Another agreement obtained by Khalifa et al (2013) they found a positive effect of advanced age for Rahmani males live body weight. Furthermore, Marai et al (2009) and El-Malky et al (2019) reported that breed had a significant (P<0.01) effect on live body weight as Ossimi breed showed heavier weight than Rahmani and Barki breed.Another point of view reported by El-Tarabany et al (2017) they mentioned that there was no difference in live body weight between Ossimi and Rahmani breeds; however, Rahmani breed had a higher body weight compared to Ossimi breed. Body length differs according to many factors such as breed, gender, yield type, and age.…”

“…Also, Stempaet al (2016) showed that no significant differences were found between breeds (Dopper and Marino) on blood glucose. Same values of blood proteins were reviewed by Saleem et al (2017), Rahman et al (2018) and El-Malky et al (2019) reported that average plasma total protein level for Saidi lambs, for Bangladesh sheep and for Ossimi and Barki was ranged from (6.07 to 7.59 g/dl) respectively. Also, Soliman (2015) and El-Bassiony (2016) mentioned that the average of blood total protein level 6.93 g/dl for Ossimi males and it was 6.80±0.13g/dl in Barki ewes.…”

“…Egyptian breeds are fat-tailed that characterized by extended breeding seasons, high fertility, and well adapted to harsh environmental conditions (Galal et al, 2005;EL-Hanafy and El-Saadani, 2009Mahrous et al, 2016, Barakat et al, 2017El-Malky et al, 2019).The total number of Egyptian sheep breeds is raised from 5,463,169 head in 2015 to 5,697,716 head in 2017. Sheep provide 72,296 tons of meat, they contribute 6% of the total red meat produced in Egypt and 99,322 tons of fresh milk (FAO, 2017).…”