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פותח על ידי קלירמאש פתרונות בע"מ -
Plasma immunoreactive inhibin and FSH in prepubertal Assaf and Booroola-Assaf ewe lambs
Year:
1993
Source of publication :
Domestic Animal Endocrinology
Authors :
בראב-טל, רות
;
.
גוטויין, אלישע
;
.
Volume :
10
Co-Authors:
Braw-Tal, R., Agricultural Research Organization The Volcani Center Institute of Animal Science Bet Dagan, 50250, Israel
Bor, A., Agricultural Research Organization The Volcani Center Institute of Animal Science Bet Dagan, 50250, Israel
Gootwine, E., Agricultural Research Organization The Volcani Center Institute of Animal Science Bet Dagan, 50250, Israel
Facilitators :
From page:
87
To page:
94
(
Total pages:
8
)
Abstract:
Plasma immunoreactive inhibin (i-inhibin) was measured in Assaf and Booroola-Assaf ( 1 2 Booroola- 1 2 Assaf) ewe lambs between the ages of 2 and 15 weeks and correlated with plasma FSH. I-inhibin concentrations were similar in both genotypes and was maximal at 2 weeks of life and decreased thereafter. These levels (mean ± s.e.) were 1.28 ± 0.12 and 1.14 ± 0.10 ng/ml at 2 weeks and 0.55 ± 0.06 and 0.45 ± 0.05 ng/ml at 15 weeks of age in Assaf (n=13) and Booroola-Assaf (n=13) respectively. In Assaf ewes an inverse correlation between plasma inhibin and FSH was observed at 4 and 15 weeks but not at 2 weeks of age. In Booroola-Assaf ewes, no significant correlation was found at any age studied. At 4 weeks of age, Assaf and Booroola-Assaf ewe lambs had very different ovarian morphology. Assaf lambs had large ovaries with a mean diameter of 1.00 ± 0.09 cm (mean ± s.e) and many preantral and antral follicles present, while Booroola-Assaf had much smaller ovaries (0.66 ± 0.03 cm, p < 0.05) with only a few antral follicles. It seems likely that the FecB allele from the Booroola Merino influenced the structure of the ovary although the contribution of other Booroola genes cannot be ruled out. In summary, the plasma i-inhibin concentrations decrease between 2 and 15 weeks of age irrespective of genotype. It is speculated that in prepubertal ewe lambs the ratio of bioactive to immunoreactive inhibin varies with age and between the genotypes with different ovarian development. © 1993.
Note:
Related Files :
aging
Animal
Blood
breeding
Female
Genetics
metabolism
Pituitary Gland, Anterior
sheep
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/0739-7240(93)90014-3
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
32807
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:12
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Scientific Publication
Plasma immunoreactive inhibin and FSH in prepubertal Assaf and Booroola-Assaf ewe lambs
10
Braw-Tal, R., Agricultural Research Organization The Volcani Center Institute of Animal Science Bet Dagan, 50250, Israel
Bor, A., Agricultural Research Organization The Volcani Center Institute of Animal Science Bet Dagan, 50250, Israel
Gootwine, E., Agricultural Research Organization The Volcani Center Institute of Animal Science Bet Dagan, 50250, Israel
Plasma immunoreactive inhibin and FSH in prepubertal Assaf and Booroola-Assaf ewe lambs
Plasma immunoreactive inhibin (i-inhibin) was measured in Assaf and Booroola-Assaf ( 1 2 Booroola- 1 2 Assaf) ewe lambs between the ages of 2 and 15 weeks and correlated with plasma FSH. I-inhibin concentrations were similar in both genotypes and was maximal at 2 weeks of life and decreased thereafter. These levels (mean ± s.e.) were 1.28 ± 0.12 and 1.14 ± 0.10 ng/ml at 2 weeks and 0.55 ± 0.06 and 0.45 ± 0.05 ng/ml at 15 weeks of age in Assaf (n=13) and Booroola-Assaf (n=13) respectively. In Assaf ewes an inverse correlation between plasma inhibin and FSH was observed at 4 and 15 weeks but not at 2 weeks of age. In Booroola-Assaf ewes, no significant correlation was found at any age studied. At 4 weeks of age, Assaf and Booroola-Assaf ewe lambs had very different ovarian morphology. Assaf lambs had large ovaries with a mean diameter of 1.00 ± 0.09 cm (mean ± s.e) and many preantral and antral follicles present, while Booroola-Assaf had much smaller ovaries (0.66 ± 0.03 cm, p < 0.05) with only a few antral follicles. It seems likely that the FecB allele from the Booroola Merino influenced the structure of the ovary although the contribution of other Booroola genes cannot be ruled out. In summary, the plasma i-inhibin concentrations decrease between 2 and 15 weeks of age irrespective of genotype. It is speculated that in prepubertal ewe lambs the ratio of bioactive to immunoreactive inhibin varies with age and between the genotypes with different ovarian development. © 1993.
Scientific Publication
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