نتایج جستجو برای: hatchability

تعداد نتایج: 1457  

Journal: :Poultry science 2011
A Lourens R Meijerhof B Kemp H van den Brand

In practice, many hatchability and chick quality problems have been related to the control of embryo temperature (ET) during incubation. Within an incubator, set at a constant machine temperature (MT), ET can vary substantially. Embryo temperature is the result of the balance between heat transfer to and from the embryo and heat production (HP) of the embryo. We investigated which factors theor...

Journal: :Poultry science 2005
A Lourens H van den Brand R Meijerhof B Kemp

An experiment was conducted to study the effects of different eggshell temperature (EST) profiles during incubation on embryo mortality, hatchability, and embryo development. Furthermore, chicks from different EST profiles were reared under low and high housing temperatures to investigate subsequent posthatch growth and rectal temperature. Two batches of eggs were used in this experiment. Hatch...

2012
M. El-Sagheer

The aim of this study was to identify the optimal turning duration of Dandarawi hen incubated eggs on embryo mortality, hatchability, one-day chick weight and viability of chicks at 14 days of age. Collected eggs from Dandarawi hens at 36 weeks of age were stored for 7-d at 16°C and 75% RH and then were incubated for 21-d under standard incubation conditions using different turning durations. E...

2008
E. Lacin

The present study aimed to determine the effects of different storage materials and storage period on some hatchability traits of Japanese quail (Coturnix coturnix japonica) eggs. A total of 32 male and 102 female quail (twelve weeks of ages) were housed in multiple-bird cages. Eggs laid were divided into three groups with respect to the period of storage (I = 1, 2 and 3 days, II = 6, 7 and 8 d...

Journal: :Black sea journal of agriculture 2023

Firstly, this study aimed to evaluate the effects on hatchability and relative weights of yolk, metabolic organ (heart, liver, breast muscle, thigh muscle) total digestive system (GUT) in ovo feeding cinnamon, ginger or anise extract. Secondly, it was investigated determine appropriate dose extract feeding. For purpose, 480 fertilized broiler eggs were randomly distributed into 12 groups with f...

Journal: :Jurnal akuakultur sungai dan danau 2023

This study aims to see the effect of light intensity on hatchability catfish (P. hypopthalmus. F) eggs. research was conducted in December 2021, for 30 days at Inti Karya Perdana Sijenjang Farmers Group, Jambi province. The design this a completely randomized (CRD) with 4 levels and 3 replications, treatments included: without (A), 20 watt (B), (C) 40 (D). Parameters observed included egg hatch...

2016
Elhem Yacoub Pascal Sirand-Pugnet Aurélien Barré Alain Blanchard Christophe Hubert Florence Maurier Emmanuel Bouilhol Boutheina Ben Abdelmoumen Mardassi

Mycoplasma meleagridis and Mycoplasma gallinarum are bacteria that affect birds, but little is known about the genetic basis of their interaction with chickens and other poultry. Here, we sequenced the genomes of M. meleagridis strain MM_26B8_IPT and M. gallinarum strain Mgn_IPT, both isolated from chickens showing respiratory symptoms, poor growth, reduction in hatchability, and loss of produc...

2012
C. Roselina Angel

Vitamin and mineral levels were determined in the eggs of ostriches and compared with poultry standard values as an indicator point. Deficiencies or excesses of vitamins and/or minerals in the laying hen, and thus in the egg, can lead to infertility, poor hatchability and early chick health problems. Specifics are described. Also, information on vitamin and mineral deficiencies is given.

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