Effect of premating injections of insulin on fertility and prolificacy of ewes

1991 ◽  
Vol 71 (1) ◽  
pp. 241-244 ◽  
Author(s):  
R. N. Kirkwood ◽  
P. A. Thacker ◽  
R. S. Korchinski ◽  
B. Laarveld ◽  
A. Gonzalez
Keyword(s):  
Key Words ◽  
Pregnancy Rate ◽  
Litter Size ◽  
Lh Surge ◽  
Basal Serum ◽  
Acting Insulin ◽  
Serum Lh ◽  
Key Words Insulin ◽  
Long Acting

Ninety-six Suffolk ewes received daily injections of either long-acting insulin (1.0 IU kg−1) or saline for 3 consecutive days after introduction of rams. Basal serum LH concentrations were higher (P < 0.05) in insulin-treated ewes (P < 0.05) but concentrations of estradiol-17B and the magnitude of the preovulatory LH surge were unaffected. Interval to breeding, pregnancy rate and subsequent litter size were not influenced by treatment (66.6 vs. 63.3 h, 69 vs. 74% and 1.65 vs. 1.69 for insulin and saline-injected ewes, respectively). Key words: Insulin, sheep, fertility, prolificacy

The influence of purified porcine relaxin on the reproductive performance of sows following artificial insemination with fresh or frozen semen

1991 ◽  
Vol 71 (1) ◽  
pp. 237-239 ◽  
Author(s):  
P. A. Thacker ◽  
A. D. Gooneratne ◽  
R. N. Kirkwood
Keyword(s):  
Key Words ◽  
Pregnancy Rate ◽  
Litter Size ◽  
Reproductive Performance ◽  
Artificial Insemination ◽  
Pregnancy Rates ◽  
Frozen Semen

Pregnancy rates and litter sizes following insemination of sows with fresh-extended and frozen-thawed semen averaged 71 vs. 53% and 10.6 vs. 4.4, respectively, and was not affected by the addition of 12.5 μg relaxin to semen. These results indicate no relaxin mediated effect on either pregnancy rate or litter size when sows are artificially inseminated with relaxin-supplemented semen. Key words: Artificial insemination, relaxin, sows

Novel Long-Acting Insulin Effective

2011 ◽  
Vol 6 (4) ◽  
pp. 17
Author(s):  
MIRIAM E. TUCKER
Keyword(s):  
Acting Insulin ◽  
Long Acting

scholarly journals 142 Reproductive performance of land race hair sheep ewes in different breeding seasons under a semi-continuous production

2020 ◽  
Vol 98 (Supplement_2) ◽  
pp. 76-76
Author(s):  
Stephan Wildeus ◽  
Dahlia O’Brien
Keyword(s):  
Pregnancy Rate ◽  
Litter Size ◽  
Production System ◽  
Continuous Production ◽  
Transrectal Ultrasound ◽  
Late Gestation ◽  
Production Cycle ◽  
Hair Sheep ◽  
Mating Period ◽  
Lamb Survival

Abstract A system for semi-continuous lamb production was evaluated using Barbados Blackbelly and St. Croix hair sheep ewes under 8-mo accelerated mating. Ewes were managed in a forage-based production system using rotational grazing. Two flocks of ewes (n = 30–35), equally representing the breeds, were bred 4 mo apart. Ewes were synchronized by feeding melengestrol acetate for 10 d, and mated in two single sire groups to like breed sires in November (NOV), March (MAR), and July (JUL) in a 25-d mating period. Pregnancy was recorded by transrectal ultrasound 22 d after breeding. Ewes were supplemented with corn/soybean meal during late gestation (0.75% of BW) and during lactation (1.5% of BW). They lambed on pasture with limited supervision, and lambs were weaned at 2 mo of age. Lambs had access to the supplement provided to ewes. Ewe performance (pregnancy rate, litter size, lamb survival, and birth and weaning weight) was recorded during a 2 yr production cycle, and analyzed for the effect of mating season. Pregnancy rate was not statistically different (P &gt; 0.1) between season, and ranged from 93.9% in NOV, to 85.9 and 86.6% in MAR and JUL. Litter size (lambs born/ewe lambing) was higher (P &lt; 0.05) in NOV (2.09) than MAR (1.68) and JUL (1.82). Lamb survival at birth was reduced (P &lt; 0.001) in JUL (86.5%) compared to NOV (99%) and MAR (100 %), but was not different between seasons for survival to weaning (86 to 90%). Lamb birth weights were higher (P &lt; 0.05) in MAR (3.16 kg) than JUL (2.99 kg), with NOV (3.05 kg) intermediate, while lamb weaning weights were higher (P &lt; 0.001) in NOV (13.6 kg) compared with MAR (11.9 kg) and JUL (11.4 kg) mating. Data suggest that dual flock, accelerated mating of landrace hair sheep ewes can produce lamb cohorts of similar size in 4 mo intervals under a low-input, forage-based production system.

Effect of Long-Acting Thyroid Stimulator on Serum Concentration of Luteinizing Hormone in the Rat

1975 ◽  
Vol 48 (3) ◽  
pp. 231-233
Author(s):  
P. Dandona ◽  
D. J. El Kabir ◽  
F. Naftolin ◽  
P. C. B. MacKinnon
Keyword(s):  
Luteinizing Hormone ◽  
Serum Concentration ◽  
Pituitary Gland ◽  
Immunoglobulin G ◽  
Adrenocorticotrophic Hormone ◽  
Serum Concentrations ◽  
Serum Luteinizing Hormone ◽  
Serum Lh ◽  
Long Acting ◽  
Dexamethasone Suppression

1. The effect of long-acting thyroid stimulator (LATS) on the serum luteinizing hormone (LH) levels of the rat in pro-oestrus has been studied. 2. The injection of three out of four LATS-containing immunoglobulin G fractions caused an increase in amounts of serum LH. 3. Adrenalectomy and dexamethasone suppression did not alter this response. 4. Injection of large doses of adrenocorticotrophic hormone did not produce any increase in serum concentrations of LH. 5. It is postulated that LATS may have a direct effect on the release of LH from the pituitary gland.

New insulins (June 10, 1966, p. 45) - corrections

1966 ◽  
Vol 4 (13) ◽  
pp. 52-52
Keyword(s):  
Short Acting ◽  
Protamine Zinc Insulin ◽  
Acting Insulin ◽  
Short Acting Insulin ◽  
Long Acting

This article stated that Actrapid and Nuso insulins can be mixed with protamine zinc insulin and other long-acting insulins. This is true, but we should have made it clear that in such a mixture the time-action characteristics of its components are likely to be altered, for some of the short-acting insulin is probably bound by the long-acting one.

scholarly journals Time-action profile of the long-acting insulin analog insulin glargine (HOE901) in comparison with those of NPH insulin and placebo

Diabetes Care ◽  
2000 ◽  
Vol 23 (5) ◽  
pp. 644-649 ◽  
Author(s):  
L. Heinemann ◽  
R. Linkeschova ◽  
K. Rave ◽  
B. Hompesch ◽  
M. Sedlak ◽  
...  
Keyword(s):  
Insulin Glargine ◽  
Insulin Analog ◽  
Nph Insulin ◽  
Acting Insulin ◽  
Analog Insulin ◽  
Long Acting ◽  
Action Profile
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