Redirigiendo al acceso original de articulo en 19 segundos...
ARTÍCULO
TITULO

Sustainability of Guinea Fowl (Numidia meleagris) layers fed varying levels of Centrosema pubescent leaf meal.

Emmanuel Ahaotu    
N Amajioyi    
K C Okorie    

Resumen

An experiment was conducted to determine the effect of egg size on hatchability of Guinea fowl keets. Three different egg size groups (treatments): small (<39 g); medium (39 - 42 g) and large (>42 g)] were used in the experiment. Each treatment had three replicates of 10 eggs each. A complete randomized design was used for the experiment. Eggs were incubated with their sharp ends pointing downwards at 37.5 - 37.8oC and 60% relative humidity for 28 days. Thereafter, incubation parameters including hatchability (number of eggs that successfully hatched), dead in shells (DIS), clears, pips and keets with deformities evaluated. Data were analyzed using General Linear Model (GLM) of SAS. Medium sized eggs had significantly (P<0.05) higher hatchability than small eggs. Also, medium sized eggs had lower pips. Egg size did not have effect on DIS, clears and deformities. The results of the present study showed that medium sized eggs (39 - 42 g) hatched best in comparison to both small and large categories. Keywords: Dead in shells, deformities, egg size, guinea fowl, hatchability, incubation

 Artículos similares

       
 
Nan Jia, Bin Li, Jun Zhu, Haifeng Wang, Yuliang Zhao and Wenwen Zhao    
The identification of chicken sex before hatching is an important problem in large-scale breeding applications in the poultry industry. This paper systematically reviews the key techniques for in ovo sexing of chicken eggs before hatching and presents re... ver más
Revista: Agriculture

 
Chenbo Shi, Yanhong Cheng, Chun Zhang, Jin Yuan, Yuxin Wang, Xin Jiang and Changsheng Zhu    
The detection of poultry egg microcracks based on electrical characteristic models is a new and effective method. However, due to the disorder, mutation, nonlinear, time discontinuity, and other factors of the current data, detection algorithms such as s... ver más
Revista: Agriculture

 
Alexandru Usturoi, Marius-Giorgi Usturoi, Bogdan-Vlad Avarvarei, Claudia Pânzaru, Cristina Simeanu, Madalina-Iuliana Usturoi, Mihaela Spataru, Razvan-Mihail Radu-Rusu, Marius-Gheorghe Dolis and Daniel Simeanu    
Predictions show the possibility of banning birds? rearing in batteries. From this reason, we aimed to study the welfare conditions assured to birds accommodated in lofts in comparison with those reared in improved batteries. The research targeted ISA Br... ver más
Revista: Agriculture

 
Qiang Bao, Di Liu, Yujiao Guo, Wang Gu, Zhengfeng Cao, Yu Zhang, Yang Zhang, Qi Xu and Guohong Chen    
Circadian rhythms affect the physiology and behavior of most organisms. The ovulation?laying cycle of poultry exhibits evident rhythmic patterns. However, the underlying biological mechanism has remained unclear. Herein, Yangzhou goose (Anser cygnoides) ... ver más
Revista: Agriculture

 
John Efromson, Roger Lawrie, Thomas Jedidiah Jenks Doman, Matthew Bertone, Aurélien Bègue, Mark Harfouche, Dominic Reisig and R. Michael Roe    
Rapid, accurate insect identification is the first and most critical step of pest management and vital to agriculture for determining optimal management strategies. In many instances, classification is necessary within a short developmental window. Two e... ver más
Revista: Agriculture