Influence of in ovo mercury exposure, lake acidity, and other factors on common loon egg and chick quality in Wisconsin

2015 ◽  
Vol 34 (8) ◽  
pp. 1870-1880 ◽  
Author(s):  
Kevin P. Kenow ◽  
Michael W. Meyer ◽  
Ronald Rossmann ◽  
Brian R. Gray ◽  
Michael T. Arts
Keyword(s):  
Mercury Exposure ◽  
Common Loon ◽  
In Ovo ◽  
Lake Acidity ◽  
Chick Quality

scholarly journals Impact of Rotten Eggs on Hatchery Performances: A Multicentric Study

Animals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1725
Author(s):  
Giovanni Franzo ◽  
Wessel Swart ◽  
Miren Arbe Ugalde ◽  
Higor Cotta ◽  
Mathilde Lecoupeur ◽  
...  
Keyword(s):  
Animal Welfare ◽  
Bacterial Load ◽  
Essential Element ◽  
Poultry Production ◽  
Feed Conversion ◽  
In Ovo ◽  
Multicentric Study ◽  
Chick Quality ◽  
Egg Removal ◽  
Feed Conversion Rate

Day-old chick quality is an essential element for the overall profitability of the broiler productive cycle and has been associated with the growth performance and feed conversion rate. An effect on the development of the immune system was also reported, which could likely account for reduced susceptibility to infectious diseases and improved animal welfare parameters. Besides direct cost reduction, lower antimicrobial use and improved animal welfare are crucial in the directive of European Union legislation and are at the forefront of customer choices. Several factors contribute to determining the chick quality. Breeder flocks genetics, health, and management affect the egg features, quality, and bacterial load. However, hatchery practices play a pivotal role, since adequate hygiene and handling are fundamental in reducing egg contamination and cross-contamination. The presence of rotten eggs is often regarded as a major risk, since the internal bacterial load can contaminate the needle used for in-ovo vaccination, the nearby eggs, and the whole incubator/hatching room when broken. In the present multicentric study, representative of 40 hatcheries located in 11 European countries, a remarkable impact of the rotten egg percentage on the hatchery productive parameters, representative of the hatchability, embryo mortality, and level of contamination, was demonstrated. Efficient rotten egg removal and the application of appropriate detection and removal tools should thus provide remarkable benefits for hatchery performance and indirectly for downstream poultry production.

Common loon reproduction and chick feeding on acidified lakes in the Adirondack Park, New York

1988 ◽  
Vol 66 (4) ◽  
pp. 804-810 ◽  
Author(s):  
Karl E. Parker
Keyword(s):  
New York ◽  
Food Resource ◽  
Resource Depletion ◽  
Low Ph ◽  
Lake Acidification ◽  
Common Loon ◽  
Feeding Problems ◽  
Short Term ◽  
Lake Acidity ◽  
Adirondack Lakes

The effects of lake acidification on common loon reproduction were studied on a total of 24 Adirondack lakes from May through August in 1983 and 1984. The lakes ranged in size from 10.5 to 179 ha; pH ranged from 4.65 to 6.77 and alkalinity from −66 to 111 μequiv./L. Although loons nesting on small, low-pH lakes had a high fledging rate, possibly because of reduced disturbance or predation, no significant relationship (P > 0.10) was found between lake acidity status and loon reproductive success. No chick mortality could be attributed to lake acidification, but chicks on low-pH lakes were generally fed prey much smaller or much larger than those normally preferred. A pair nesting on a fishless lake fed aquatic insects to their constantly begging chick, spending two to four times longer feeding the chick compared with loons on lakes with fish. This pair, alternating absences, flew to another lake to feed, and on three occasions returned to the nesting lake carrying a fish. Loons on the low-pH study lakes apparently adapted, at least in the short term, to food resource depletion associated with acidification. Despite this, acidification creates potentially severe feeding problems for chicks by reducing prey diversity and quantity.

PATTERNS OF COMMON LOON (GAVIA IMMER) MERCURY EXPOSURE, REPRODUCTION, AND SURVIVAL IN WISCONSIN, USA

1998 ◽  
Vol 17 (2) ◽  
pp. 184 ◽  
Author(s):  
Michael W. Meyer ◽  
David C. Evers ◽  
Jerry J. Hartigan ◽  
Paul S. Rasmussen
Keyword(s):  
Mercury Exposure ◽  
Gavia Immer ◽  
Common Loon

Patterns of common loon (Gavia immer) mercury exposure, reproduction, and survival in wisconsin, USA

1998 ◽  
Vol 17 (2) ◽  
pp. 184-190 ◽  
Author(s):  
Michael W. Meyer ◽  
David C. Evers ◽  
Jerry J. Hartigan ◽  
Paul S. Rasmussen
Keyword(s):  
Mercury Exposure ◽  
Gavia Immer ◽  
Common Loon

scholarly journals Effect of a commercial product containing canthaxanthin for in ovo feeding to broiler embryos on hatchability, chick quality, oxidation status, and performance

2020 ◽  
Vol 99 (11) ◽  
pp. 5598-5606 ◽  
Author(s):  
Itallo C.S. Araújo ◽  
Marcos B. Café ◽  
Mariana A. Mesquita ◽  
Bruna N. Caiado ◽  
Adriana M. Faria ◽  
...  
Keyword(s):  
Commercial Product ◽  
In Ovo ◽  
Oxidation Status ◽  
Chick Quality ◽  
And Performance ◽  
In Ovo Feeding

scholarly journals In Ovo β-Alanin Solüsyonu Alan Yeni Çıkmış Etlik Piliç Civcivlerinde Kuluçka Randımanı, Bazı Kuluçka Parametreleri, Kalite Skoru ve Yaşama Gücü

2018 ◽  
Vol 6 (10) ◽  
pp. 1469
Author(s):  
Canan Kop Bozbay ◽  
Ahmet Akdağ ◽  
Helin Atan ◽  
Nuh Ocak
Keyword(s):  
Negative Control Group ◽  
Positive Control ◽  
Negative Control ◽  
Quality Score ◽  
Control Group ◽  
Control Groups ◽  
In Ovo ◽  
Broiler Breeder ◽  
Death Rates ◽  
Chick Quality

This study was conducted to evaluate the effects of In ovo injection of β-Alanine which is a modified form of the alanine amino acid on hatchability, hatching weight, chick quality score and survival in broiler breeder eggs. For this purpose, 120 fertile eggs from Ross 308 breeder (32-week-old) were allocated randomly to four groups with 3 replicates. Except the negative control group eggs (non injected; NC), to the amniotic fluid of the eggs in the other 3 groups were injected with 1 ml solutions 0.9% salt (Positive control, PK), 0.75% (0.75βA) or 1.5% (1.5βA) by using 19 mm and 27 gauge needle. Death rates at the different stages of embryonic development, hatching yield, weights and quality scores of chicks and mortalities were recorded at hatching day. Hatching weight of the chicks in the 0.75βA group was higher than other two control groups. Accessing feed, determined as an indicator of chick quality, was better in the 0.75βA group. Conversely, mobility score of chicks in the NC group was higher than other groups. Hatching yield, chick quality score and mortalities of the first week were not affected from In ovo βA injection. Results of this study demonstrated that In ovo βA injection can be used up to 1.5% without any deteriorations on weight, quality and mortalities of chicks but 0.75% βA injection induced better hatching characteristics.

scholarly journals Beta alanine effects immediately pre- and post hatch on chick quality, carcass yield and meat quality in broilers

2021 ◽  
Vol 51 (1) ◽  
Author(s):  
H. Atan ◽  
C. Kop-Bozbay
Keyword(s):  
Meat Quality ◽  
Broiler Chickens ◽  
Total Antioxidant Status ◽  
Negative Control ◽  
Access Time ◽  
In Ovo ◽  
Carcass Yield ◽  
Treatment Groups ◽  
Beta Alanine ◽  
Chick Quality

First, this study aimed to evaluate the effects on hatchability of in ovo supplementation of beta alanine (βA). Second, it assessed the effects on performance, meat quality and serum constituents of broiler chickens of βA injection in ovo and of supplementation with βA in feed for the first seven days after hatching. For this purpose, 960 fertilized broiler chicken eggs were distributed to hatchery trays in four treatment groups with six replicates on day 17 of incubation. The treatment groups consisted of eggs that were not injected (T1; negative control), injected with sterile solution with 0.9% salt (T2; positive control), injected with in ovo 1% βA solution (T3), and not injected, but with chicks were fed 1% βA for the first seven days after hatching (T4). Upon hatching, chicks from T1, T2, and T3 were fed commercial starter feed. All treatments were assessed with six replicates of 28 birds (14 females and 14 males) throughout the grow-out period. As a result of this study, T3 increased hatchability, yolk-free hatching weight and chick quality, and decreased yolk weight and feed access time at hatch. Both T3 and T4 improved carcass yield and meat quality, and T3 increased serum total antioxidant status at 42 days afer hatching. The results demonstrated that in ovo βA feeding improved hatching characteristics, and βA administration in ovo or in feed improved carcass yield and meat quality without affecting growth performance.

scholarly journals Effects of coccidiosis vaccination administered by in ovo injection on the hatchability and hatching chick quality of broilers , ,

2017 ◽  
Vol 96 (3) ◽  
pp. 541-547 ◽  
Author(s):  
A.O. Sokale ◽  
W. Zhai ◽  
L.M. Pote ◽  
C.J. Williams ◽  
E.D. Peebles
Keyword(s):  
In Ovo ◽  
In Ovo Injection ◽  
Chick Quality
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