THE ROLE OF PLASMA THYROID-HORMONES IN THE REGULATION OF BODY-WEIGHT OF SINGLE COMB WHITE LEGHORN AND BROILER EMBRYOS

被引:14
作者
BURKE, WH [1 ]
ARBTAN, KD [1 ]
SNAPIR, N [1 ]
机构
[1] HEBREW UNIV JERUSALEM,DEPT ANIM SCI,IL-76100 REHOVOT,ISRAEL
关键词
D O I
10.3382/ps.0691388
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
Studies were conducted to determine if sex differences in embryo weights existed in a light-weight breed of chickens (the Single Comb White Leghorn, SCWL) and in a heavy broiler strain of chickens. Plasma thyroid hormone concentration was measured to determine its relationship to embryo weight. Male SCWL embryos were heavier than females at 15 and 17 days of incubation, but not at 13 days. Male broiler embryos were heavier than females at 13 and 15 days of incubation, but not at 17 days. There was no sex difference in the levels of plasma triiodothyronine (T3) or of tetraiodothyronine (T4) of SCWL embryos at those respective ages. The plasma T4 in male broiler embryos was significantly lower than that in the females at 15 and 17 days of incubation, but not at 13 days. There was no relationship between plasma T3, and the weight of SCWL embryos. There were significant linear regressions of embryo weight on the plasma T4 levels for SCWL males at 13 and 15 days of incubation and for SCWL females at 13 and 17 days of incubation, respectively. A significant regression of embryo weight on plasma T4 was found in female broiler embryos at 13 days of age, but not in females at other ages or in males at any of the ages studied.
引用
收藏
页码:1388 / 1393
页数:6
相关论文
共 19 条
[1]   SEX-DIFFERENCES IN BODY-WEIGHT OF CHICKEN EMBRYOS [J].
BURKE, WH ;
SHARP, PJ .
POULTRY SCIENCE, 1989, 68 (06) :805-810
[3]  
CHOPRA IJ, 1972, J LAB CLIN MED, V80, P729
[4]   RESPONSE-SURFACE OF DAILY THYROID-HORMONE RHYTHMS IN YOUNG CHICKENS EXPOSED TO CONSTANT AMBIENT-TEMPERATURE [J].
COGBURN, LA ;
FREEMAN, RM .
GENERAL AND COMPARATIVE ENDOCRINOLOGY, 1987, 68 (01) :113-123
[5]   CIRCULATING THYROID-HORMONES IN CHICKEN BEFORE AND AFTER HATCHING [J].
DAVISON, TF .
GENERAL AND COMPARATIVE ENDOCRINOLOGY, 1976, 29 (01) :21-27
[6]   MULTIPLE RANGE AND MULTIPLE F TESTS [J].
DUNCAN, DB .
BIOMETRICS, 1955, 11 (01) :1-42
[7]   COMPARISON OF DIFFERENT COMPOUNDS FOR TBG-BLOCKING USED IN RADIOIMMUNOASSAY FOR TRI-IODOTHYRONINE [J].
HUFNER, M ;
HESCH, RD .
CLINICA CHIMICA ACTA, 1973, 44 (01) :101-107
[8]   THYROIDAL INFLUENCE ON BODY GROWTH [J].
KING, DB ;
MAY, JD .
JOURNAL OF EXPERIMENTAL ZOOLOGY, 1984, 232 (03) :453-460
[9]   SERUM TRIIODOTHYRONINE LEVELS IN EMBRYONIC AND POST-HATCHING CHICKEN, WITH PARTICULAR REFERENCE TO FEEDING-INDUCED CHANGES [J].
KING, DB ;
KING, CR ;
ESHLEMAN, JR .
GENERAL AND COMPARATIVE ENDOCRINOLOGY, 1977, 31 (02) :216-223
[10]   DIRECT IMMUNOASSAY OF TRIIODOTHYRONINE IN HUMAN SERUM [J].
LARSEN, PR .
JOURNAL OF CLINICAL INVESTIGATION, 1972, 51 (08) :1939-&