Effect of Organic Selenium Supplementation in Diet on Gastrointestinal Tract Performance and Meat Quality of Goat
Effect of Organic Selenium Supplementation in Diet on Gastrointestinal Tract Performance and Meat Quality of Goat
Saba Parveen Samo1, Moolchand Malhi1,*, Javed Gadahi2, Yan Lei3, Allah Bux Kaciwal1 and Saeed Ahmed Soomro1
ABSTRACT
Ten cross-bred goats of about 4 months of age and 10.5 kg body weight were randomly selected for the study and divided into two groups (n=5/each). Basal diet given to the animals consist of roughage and concentrate at the ratio of 65:35. Group A was kept without any supplementation whereas group B was supplemented with selenium yeast (SY) at the dose rate of 0.3 mg/kg.diet for 8 weeks. The results showed that the weights (% of empty body weight) of rumen (4.18 ± 0.30 vs 3.49 ± 0.10); duodenum (0.32 ± 0.01 vs 0.27 ± 0.01); colon (1.14 ± 0.03 vs 1.06 ± 0.01), caecum (0.62 ± 0.03 vs 0.57 ± 0.01) and the whole large intestine (2.44 ± 0.04 vs 2.32 ± 0.03) significantly increased (P < 0.05) in B compared to A. The weights of liver, heart, kidney and spleen were not significantly different (P > 0.05) between the groups, however, the lung weight increased in B (1.15 ± 0.04 vs 0.99 ± 0.04, P < 0.05) compared to A. Digestibility trails revealed that utilization of dry matter (DM), crude protein (CP) and crude fiber (CF) increased (P < 0.05) by 13.71, 12.02 and 4.78% at week 3 and by 11.11, 11.8 and 3.46 % at week 6 in B compared to A. Among carcass characteristics the carcass dressing % (52.99 ± 0.77 vs 49.41 ± 0.6 ) and leg weight (kg) (1.28 ± 0.06 vs 1.05 ± 0.04) increased (P < 0.05) in B compared to A. The physico-chemical properties of meat were not significantly different between the groups except fat content (2.75 ± 0.25 vs 2.00 ± 0.05%, P < 0.096) which tended to increase in B compared to A. These data demonstrated that dietary SY supplementation increased gastrointestinal tract weight and nutrient digestibilities, and improved some carcass characteristics in goats.
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June 2018
Vol. 50, Iss. 3, Pages 799-1198
