Investigating the Effects of Dietary Energy and Protein on the semen Characteristics and Egg Quality of Turkeys (Meleagris gallopavo) in Bali, Taraba State, Nigeria

2021 ◽  
pp. 72-78
Author(s):  
Y. E. Waba ◽  
G. J. Bandawa ◽  
A. A. Adi
2021 ◽  
Vol 48 (1) ◽  
pp. 1-11
Author(s):  
H. K. Yahaya ◽  
A. K. Olutunmogun ◽  
Y. B. Mohammad ◽  
M. M. Shettima ◽  
M. Kabir

The study was conducted to investigate the external and internal egg quality characteristics of two local strains of turkey during their early reproductive age. A total of 96 freshly laid eggs were sampled from two local turkey strains having black and white plumages. The turkeys were 33weeks of age with two months into lay. Data were collected weekly for three weeks on egg weight, egg length, egg diameter, shell thickness, shell weight, shell index, albumen weight, yolk weight, albumen: yolk ratio, albumen length, yolk length, albumen diameter, yolk diameter, albumen height, yolk height, yolk index and Haugh unit and analyzed using the statistical package of SAS. The results revealed that highly significant (p<0.01) differences in the external traits occurred in egg weight, egg length and shell weight with the white turkey strain been superior. Also, the internal traits recorded highly significant (p<0.01) differences in albumen weight, yolk weight, albumen: yolk ratio, albumen length, yolk length and yolk diameter with the white strain performing better than the black strain. Highly significant correlations (p>0.01) exits in most of the correlated traits with the except for Haugh unit that had no significantly (p<0.01) correlations. Thus, since significant variations exits between the two strains, selection activities are recommended to improve these economic traits in egg weight using it has an index in selection and in possible prediction of the quality of poults to be hatched. Also, economically, it may be used to know the consumers' preference on the quality of turkey eggs consumed.     L'étude a été menée pour étudier les caractéristiques de qualité externe et interne des œufs de deux souches locales de dinde au début de leur âge de reproduction. Un total de 96 œufs fraîchement pondus ont été échantillonnés à partir de deux souches de dinde locales présentant des plumages noirs et blancs. Les dindes étaient âgées de 33 semaines avec deux mois de ponte. Des données ont été collectées chaque semaine pendant trois semaines sur le poids de l'œuf, la longueur de l'œuf, le diamètre de l'œuf, l'épaisseur de la coquille, le poids de la coquille, l'indice de la coquille, le poids de l'albumine, le poids du jaune, le rapport albumine: jaune, la longueur de l'albumen, la longueur du jaune, le diamètre de l'albumen, le diamètre du jaune, l'albumine hauteur, hauteur du jaune, indice de jaune et unité Haugh et analysés à l'aide du progiciel statistique de 'SAS'. Les résultats ont révélé que des différences très significatives (p = 0,01) dans les caractères externes se produisaient dans le poids des œufs, la longueur des œufs et le poids de la coquille avec la souche de dinde blanche supérieure. En outre, les traits internes ont enregistré des différences très significatives (p = 0,01) dans le poids de l'albumine, le poids du jaune, le rapport albumine : jaune, la longueur de l'albumine, la longueur du jaune et le diamètre du jaune, la souche blanche fonctionnant mieux que la souche noire. Des corrélations hautement significatives (p?0,01) existent dans la plupart des traits corrélés avec l'unité à l'exception de Haugh qui n'avait pas de corrélations significatives (p?0,01). Ainsi, étant donné que des variations importantes existent entre les deux souches, des activités de sélection sont recommandées pour améliorer ces caractères économiques en poids de l'œuf en utilisant un indice de sélection et de prédiction éventuelle de la qualité des dindonneaux à éclore. Aussi, économiquement, il peut être utilisé pour connaître la préférence des consommateurs sur la qualité des œufs de dinde consommés.


2014 ◽  
Vol 16 (4) ◽  
pp. 381-388 ◽  
Author(s):  
PAP Ribeiro ◽  
JB Matos Jr ◽  
LJC Lara ◽  
LF Araújo ◽  
R Albuquerque ◽  
...  

Animals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1123 ◽  
Author(s):  
Haibo Wang ◽  
Hang Li ◽  
Fei Wu ◽  
Xinjun Qiu ◽  
Zhantao Yu ◽  
...  

The objective of this study was to evaluate the effects of dietary energy levels on growth performance, rumen fermentation and bacterial community, and meat quality of Holstein-Friesians bulls slaughtered at different ages. Thirty-six Holstein-Friesians bulls (17 months of age) were divided into a 3 × 3 factorial experiment with three energy levels (LE, ME and HE; metabolizable energy is 10.12, 10.90 and 11.68 MJ/kg, respectively) of diets, and three slaughter ages (20, 23 and 26 months). Results indicated that bulls fed with ME and HE diets had higher dry matter intake, average daily gain, and dressing percentage at 23 or 26 months of age. The ME and HE diets also reduced bacterial diversity, altered relative abundances of bacteria and produced lower concentrations of acetate, but higher butyrate and valerate concentrations in rumen fluid. Increasing in dietary energy and slaughter age increased the intramuscular fat (IMF) and water holding capacity. In summary, Holstein-Friesians bulls fed with ME and HE diets, slaughtered at 23 and 26 months of age could be a good choice to produce beef with high IMF. Slaughter age may have less influence than dietary energy in altering fermentation by increasing amylolytic bacteria and decreasing cellulolytic bacteria, and thus, further affecting meat quality.


BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Gregory M. Weber ◽  
Jill Birkett ◽  
Kyle Martin ◽  
Doug Dixon ◽  
Guangtu Gao ◽  
...  

Abstract Background Transcription is arrested in the late stage oocyte and therefore the maternal transcriptome stored in the oocyte provides nearly all the mRNA required for oocyte maturation, fertilization, and early cleavage of the embryo. The transcriptome of the unfertilized egg, therefore, has potential to provide markers for predictors of egg quality and diagnosing problems with embryo production encountered by fish hatcheries. Although levels of specific transcripts have been shown to associate with measures of egg quality, these differentially expressed genes (DEGs) have not been consistent among studies. The present study compares differences in select transcripts among unfertilized rainbow trout eggs of different quality based on eyeing rate, among 2 year classes of the same line (A1, A2) and a population from a different hatchery (B). The study compared 65 transcripts previously reported to be differentially expressed with egg quality in rainbow trout. Results There were 32 transcripts identified as DEGs among the three groups by regression analysis. Group A1 had the most DEGs, 26; A2 had 15, 14 of which were shared with A1; and B had 12, 7 of which overlapped with A1 or A2. Six transcripts were found in all three groups, dcaf11, impa2, mrpl39_like, senp7, tfip11 and uchl1. Conclusions Our results confirmed maternal transcripts found to be differentially expressed between low- and high-quality eggs in one population of rainbow trout can often be found to overlap with DEGs in other populations. The transcripts differentially expressed with egg quality remain consistent among year classes of the same line. Greater similarity in dysregulated transcripts within year classes of the same line than among lines suggests patterns of transcriptome dysregulation may provide insight into causes of decreased viability within a hatchery population. Although many DEGs were identified, for each of the genes there is considerable variability in transcript abundance among eggs of similar quality and low correlations between transcript abundance and eyeing rate, making it highly improbable to predict the quality of a single batch of eggs based on transcript abundance of just a few genes.


2009 ◽  
Vol 11 (2) ◽  
pp. 109-113 ◽  
Author(s):  
AB Molino ◽  
EA Garcia ◽  
DA Berto ◽  
K Pelícia ◽  
AP Silva ◽  
...  
Keyword(s):  

1983 ◽  
Vol 45 (3) ◽  
pp. 176-178 ◽  
Author(s):  
Charlie E. Smith ◽  
William P. Dwyer ◽  
Robert G. Piper

Author(s):  
Adam Kraus ◽  
Lukáš Zita

The aim was to assess the internal and external quality of consumer eggs of egg‑laying hens of two selected genotypes depending on their age. All of these hens were kept in enriched cages. There were compared eggs from Hy‑Line Brown and ISA Brown hens at the age from 36 to 64 weeks. In total, 3840 eggs from 300 hens were evaluated. Quality of eggs was determined by their technological value. Statistically significant interactions (P = 0.001) between age and genotype were found in all evaluated parameters except for the yolk colour (P = 0.044), whereas there was not found interaction (P = 0.072) between age and genotype in eggshell strength. The significant effect of hens’ age was found in all evaluated parameters, with the only exception of the yolk colour. The results showed that the average weight of eggs, eggshell, albumen and yolk increased with the age. Also the eggshell proportion, its colour and yolk index values ​​increased, whereas the egg shape index, eggshell thickness and strength, albumen proportion, Haugh units, the albumen and the yolk index decreased. Statistically significant effect of the genotype was found in all evaluated parameters except for the yolk index. When comparing both genotypes, the eggs from ISA Brown hens had a better quality. The trend of deteriorating egg quality with age was confirmed.


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