scholarly journals Further Studies on the Apparent Effect of Digestibility upon Growth, Weight-Maintenance and Egg Production

1945 ◽  
Vol 24 (2) ◽  
pp. 142-145 ◽  
Author(s):  
G.F. Heuser ◽  
L.C. Norris ◽  
H.T. Peeler ◽  
M.L. Scott
Keyword(s):  
Egg Production ◽  
Weight Maintenance ◽  
Apparent Effect

ON THE PHOSPHORUS REQUIREMENTS OF CHICKENS FOR EGG PRODUCTION AND HATCHABILITY

1959 ◽  
Vol 39 (2) ◽  
pp. 182-192 ◽  
Author(s):  
W. F. Pepper ◽  
S. J. Slinger ◽  
J. D. Summers ◽  
G. C. Ashton
Keyword(s):  
Total Phosphorus ◽  
Egg Production ◽  
High Efficiency ◽  
Laying Hens ◽  
Weight Maintenance ◽  
Calcium Content ◽  
Dicalcium Phosphate ◽  
Egg Weight ◽  
Shell Quality ◽  
Clear Cut

An experiment was made in an attempt to determine the availability of the phosphorus in soft phosphate as compared with that in dicalcium phosphate for laying hens fed a diet of natural ingredients. A high efficiency "all-vegetable" diet containing 0.38 per cent total phosphorus and an estimated 0.11 per cent nonphytin phosphorus was fed without added phosphorus and with sufficient dicalcium phosphate or soft phosphate to supply 0.05 and 0.1 per cent phosphorus. The calcium content of all diets was kept constant at 2.4 per cent.The results indicated that the inclusion of supplementary phosphorus did not improve egg production or feed required per dozen eggs. Differences were not demonstrated in body weight maintenance, egg weight, specific gravity of the eggs, hatchability, or bone ash at the end of a 44-week period of production.The results suggest the possibility that egg weight loss after 14 days’ incubation may have been influenced by supplementary phosphorus. Evidence for this effect was not clear-cut and more work appears desirable in this connection.It is concluded that it is not possible to assay feed phosphates for laying hens with diets of natural ingredients. It would also appear that a level of 0.38 per cent total phosphorus and 0.11 per cent nonphytin phosphorus is adequate for laying hens.Supplementation of an "all-vegetable" laying diet with Vigofac did not improve egg production, feed efficiency, egg weight, egg-shell quality or hatchability.

Survival and reproduction of Euoniticellus intermedius(Coleoptera: Scarabaeidae) in dung following application of cypermethrin and flumethrin pour-ons to cattle

1999 ◽  
Vol 89 (6) ◽  
pp. 543-548 ◽  
Author(s):  
K. Krüger ◽  
O.M. Lukhele ◽  
C.H. Scholtz
Keyword(s):  
Adverse Effects ◽  
Untreated Control ◽  
Egg Production ◽  
Adult Emergence ◽  
Adult Survival ◽  
Apparent Effect ◽  
Survival And Reproduction ◽  
Immature Survival

AbstractCattle were treated with cypermethrin and flumethrin pour-ons to determine possible adverse effects of residues in dung on the survival, fecundity and fertility of Euoniticellus intermedius (Reiche). Dung from both cypermethrin- and flumethrin-treated cattle was collected 1, 2, 3, 5, 7, 14, 21 and 28 days after treatment, with an untreated control for each. Mortality of adult E. intermedius exposed to dung collected from cypermethrin-treated cattle two to seven days after treatment ranged between 80% and 100%. Cypermethrin had no effect on adult and immature survival or on fecundity and fertility of E. intermediusexposed to dung collected 1, 14, 21 and 28 days after treatment. Dung collected from flumethrin-treated cattle had no apparent effect on adult survival, egg production, immature survival, adult emergence, fecundity and fertility of E. intermedius, except at seven days after treatment, when fewer brood balls were produced and consequently fewer adults emerged from dung from treated animals compared with the control.

scholarly journals Reproductive Interference in an Introduced Bumblebee: Polyandry may Mitigate Negative Reproductive Impact

Insects ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 59 ◽  
Author(s):  
Koji Tsuchida ◽  
Ayumi Yamaguchi ◽  
Yuya Kanbe ◽  
Koichi Goka
Keyword(s):  
Egg Production ◽  
Bombus Terrestris ◽  
Insect Growth Regulator ◽  
Reproductive Interference ◽  
Interspecific Mating ◽  
Species Replacement ◽  
Apparent Effect ◽  
Hybrid Production ◽  
Northern Island ◽  
Mass Release

As a signature of reproductive interference (RI), we reviewed hybrid production in eusocial bumblebees in Japan, by comparing introduced Bombus terrestris with native B. ignitus in Honshu (main island of Japan) and with native B. hypocrita sapporoensis in Hokkaido (northern island of Japan). In this review, we present additional new data showing hybrid production between introduced B. terrestris and native B. ignitus in Honshu. Interspecific mating with introduced B. terrestris disrupts the reproduction of native B. h. sapporoensis and B. ignitus, which belong to the same subgenus of Bombus, through inviable egg production. This interference appears to facilitate species replacement on Hokkaido. Simultaneously, the mating frequencies for queens of B. terrestris have increased, suggesting that polyandry might evolve in response to the extent of RI between B. terrestris and B. h. sapporoensis. To suppress the population size of B. terrestris in Hokkaido, two methods have been proposed: the mass release of B. h. sapporoensis males to induce RI between the two species and the spraying of insecticides against foraging workers so that the workers will carry the insecticides back to their colonies, killing the immature bees within the colonies. A candidate insecticide type is insect growth regulator, which may disrupt larval development without any apparent effect on foraging workers.

scholarly journals The Effect of a High Level of Dietary Amino Acid Nitrogen on Egg Production and Body Weight Maintenance

1959 ◽  
Vol 38 (3) ◽  
pp. 638-646 ◽  
Author(s):  
J.S. Adkins ◽  
E.C. Miller ◽  
C.A. Elvehjem ◽  
H.R. Bird ◽  
M.L. Sunde
Keyword(s):  
Body Weight ◽  
Amino Acid ◽  
Egg Production ◽  
Weight Maintenance ◽  
Amino Acid Nitrogen ◽  
Dietary Amino Acid ◽  
High Level

The PREVIEW Study

2019 ◽  
Vol 26 (1) ◽  
pp. 10-20
Author(s):  
Maija Huttunen-Lenz ◽  
Sylvia Hansen ◽  
Thomas Meinert Larsen ◽  
Pia Christensen ◽  
Mathijs Drummen ◽  
...  
Keyword(s):  
Weight Loss ◽  
Weight Maintenance ◽  
Maintenance Phase ◽  
Habit Strength ◽  
Health Habits ◽  
Cross Sectional ◽  
Socio Economic Variables ◽  
Overweight Adults ◽  
Modification Intervention

Abstract. Individuals at risk of Type 2 Diabetes are advised to change health habits. This study investigated how the PREMIT behavior modification intervention and its association with socio-economic variables influenced weight maintenance and habit strength in the PREVIEW study. Overweight adults with pre-diabetes were enrolled ( n = 2,224) in a multi-center RCT including a 2-month weight-loss phase and a 34-month weight-maintenance phase for those who lost ≥ 8% body weight. Initial stages of the PREMIT covered the end of weight-loss and the beginning of weight-maintenance phase (18 weeks). Cross-sectional and longitudinal data were explored. Frequent PREMIT sessions attendance, being female, and lower habit strength for poor diet were associated with lower weight re-gain. Being older and not in employment were associated with lower habit strength for physical inactivity. The PREMIT appeared to support weight loss maintenance. Younger participants, males, and those in employment appeared to struggle more with inactivity habit change and weight maintenance.

Weight loss "maintainers" vs. "regainers": Posttreatment physical activity facilitates weight maintenance in obese women

2013 ◽  
Author(s):  
Renee T. Degener ◽  
Melissa H. Laitner ◽  
Danielle M. Lespinasse ◽  
Kristen E. Medina ◽  
Stacey N. Maurer ◽  
...  
Keyword(s):  
Physical Activity ◽  
Weight Loss ◽  
Weight Maintenance ◽  
Obese Women

Orlistat

2009 ◽  
Vol 03 (02) ◽  
pp. 61-65
Author(s):  
H. Toplak
Keyword(s):  
Weight Maintenance

ZusammenfassungOrlistat (Tetrahydrolipstatin) ist der erste im Darm (peripher) nachgewiesen wirksame, pharmakologisch effektive Fettresorptionshemmer. Orlistat hemmt die intestinale Triglyzeridlipase und senkt so die gastrointestinale Fettspaltung dosisabhängig um bis zu etwa 35 Prozent. Diätetisch wird bei Gabe von Orlistat für die Fettzufuhr etwa 30 Prozent der Gesamtkalorien angestrebt, insgesamt aber jedenfalls weniger als 70 g/Tag. Wird diese Fettmenge überschritten, kann es zu Fettstühlen, Stuhlinkontinenz und fehlender Wirkung kommen. Bei der damit verbundenen Malabsorption ist auch mit Störungen der Vitamin- und Elektrolytresorption zu rechnen. Die Wirksamkeit einer Orlistat-Therapie ist im Sinne des Gewichtsverlusts moderat und vergleichbar mit Sibutramin, hat aber auch erzieherischen Wert, da es die unbedingte Notwendigkeit fettarmer Ernährung “prägen” hilft. Besonders eine bisher selten geübte Langzeitgabe könnte zur Gewichtsstabilisierung beitragen (“weight maintenance”). Die metabolischen Effekte sind zum Teil gewichtsunabhängig (Insulinresistenz und LDL-C-Senkung). Durch seine exzellente Therapiesicherheit wurde Orlistat kürzlich innerhalb eines neuen Therapieprogrammes als OTC-Produkt zugelassen (2).

Source populations in coastal crabs: population parameters affecting egg production

2009 ◽  
Vol 7 ◽  
pp. 31-43 ◽  
Author(s):  
AAV Flores ◽  
CC Gomes ◽  
WF Villano
Keyword(s):  
Egg Production ◽  
Population Parameters ◽  
Source Populations

ПРЕРЫВИСТОЕ ОСВЕЩЕНИЕ ПОВЫШАЕТ ЭФФЕКТИВНОСТЬ ИСКУССТВЕННОГО ОСЕМЕНЕНИЯ КУР В КЛЕТКАХ

2019 ◽  
Keyword(s):  
Reproductive Performance ◽  
Artificial Insemination ◽  
Egg Production ◽  
Laying Hens ◽  
Electric Energy ◽  
Productive Performance ◽  
Feed Conversion ◽  
Scientific Center ◽  
Academy Of Sciences ◽  
Egg Fertility

Intermittent Lighting Improves the Efficiency of Artificial Insemination in Cage Housed Laying Hens Kavtarashvili A.Sh., Kolokolnikova T.N. Federal Scientific Center “All-Russian Research and Technological Poultry Institute” of Russian Academy of Sciences Omsk Agrarian Scientific Center Summary: The effects of different lighting regimes on the oviposition schedule, productive performance, and reproductive efficiency in cage housed laying hens of layer parental flock (Hisex White-R) were studied; the reasonable regime of artificial insemination (AI) under intermittent lighting is proposed. It was found that intermittent lighting regime 1L:4D:4L:1D:4L:10D compared to the constant lighting significantly alters oviposition schedule: under this regime 82.3% of all daily eggs were laid until 9 am (vs. 66.6% in control). This regime and AI at 10 am improved the productive and reproductive performance compared to control (constant lighting 16L:8D and AI at 12 am): mortality by 1.9%, egg production per initial hen by 3.8%, egg weight by 1.1%, percentage of eggs suitable for incubation by 1.9%, egg fertility by 0.9%, hatchability by 2.3%, hatch of chicks by 2.9%, feed conversion ratio (kg of feed per 10 eggs) by 5.3%, the expenses of electric energy for lighting (per 1000 eggs suitable for incubation) by 54.5%. Key words: INTERMITTENT LIGHTING, CAGE HOUSED LAYERS, ARTIFICIAL INSEMINATION (AI), OVIPOSITION SCHEDULE, AI TIMING, PRODUCTIVE PERFORMANCE, REPRODUCTIVE PERFORMANCE

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