Correlation of blood triiodothyronine (T3) level with some production traits in male goat kids

Authors : Khalid ABDOUN, Emad SAMARA, Aly OKAB, Mohamed ALBADWI, Mohamed ELZAREI, Ali ALSEAF, Ahmed ALHAIDARY

Pages : 292-295

View : 17 | Download : 8

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Thyroid hormones are known for their stimulation of feed efficiency and growth performance in different farm animals. More interestingly, the level of thyroid hormones is influenced by selection for growth in some animal species. Therefore, it was the aim of the current study to investigate whether a correlation exists between the blood triiodothyronine insert ignore into journalissuearticles values(T 3 ); level and some production traits insert ignore into journalissuearticles values(daily feed intake, average daily gain, and feed conversion ratio);. To test this hypothesis, six male goat kids insert ignore into journalissuearticles values(21.9 ± 2.4 kg; 5 months old); belonging to Aardi, Damascus, and their cross breed insert ignore into journalissuearticles values(two kids from each genotype); were used in the current study. The obtained results revealed a positive linear correlation of plasma T 3 level with both average daily feed intake and average daily gain with correlation coefficients of 99% and 97%, respectively insert ignore into journalissuearticles values(P ≤ 0.001);. On the other hand, feed conversion ratio was negatively correlated to the plasma T 3 level with a correlation coefficient of 81% insert ignore into journalissuearticles values(P = 0.05);. The obtained results indicate the possible use of blood T 3 level for the prediction of feed intake, daily body weight gain, and feed conversion ratio in addition to the possible use of blood T 3 level as a criterion of breeding selection for growth performance in the future.
Keywords : Goat, thyroid hormones, feeding efficiency, growth performance