scholarly journals Characteristics of Rice Hulls, Sawdust, Wood Shavings and Mixture of Sawdust and Wood Shavings, and Their Usefulness According to the Pen Location for Hanwoo Cattle

2016 ◽  
Vol 29 (4) ◽  
pp. 599-605 ◽  
Author(s):  
Gyu Chul Ahn ◽  
Sun Sik Jang ◽  
Hyung Jun Kwak ◽  
Sang Rak Lee ◽  
Young Kyun Oh ◽  
...  
2020 ◽  
Vol 47 (3) ◽  
pp. 59-66
Author(s):  
H. O. Obikaonu ◽  
S. N. Obiora ◽  
P. Obiagwu

Attempts made to improve broiler production had been focused more on feed with little or no consideration on the impact of litter quality which is a major concern in chicken production not only because it affects the flock health and productivity, but also because it may act as potential reservoir and transmission vehicle for pathogens and potential pathogens. Since blood is considered as an important material for the evaluation of health status in animals, there is need therefore, to investigate the impact of different litter materials on the hematological and serum biochemistry of broiler finisher chicken. A56-day feeding trial was conducted to evaulate the effect of different litter materials on the haematological and serum biochemical indices of intensively managed finisher broilers. Four different litter materials were used for the experiment viz wood, shaving, Groundnut hulls; coconut husks and rice hulls. Wood shavings was used as the control owing to the fact that it is the most commonly used litter in this zone. The coconut husks were manually shred to extract the fibres which was used while the other materials were used as sourced. A toal of 120 broiler birds were used for the experiment, they were divided into four treatments (T1= Wood shavings, T2= Groundnut hulls, T3=Coconut husks, and T4=Rice hulls) of 30 birds each and sub divided into 10 birds per replicate. Each replicate was housed in a pen fitted with broding facilities. Feed and water were given ad libilum for eight weeks. At the end of the experiment blood was collected from the birds, three per treatment given a total of 12 birds. They were analyzed for haematological and serum biochemical indices. Haemoglobin values compared favourably (P>0.05) with that of the control. PCVvalues of T2 and T3 compared favourably well with that of control but significant differences existed (P<0.05) between the PCV value of T4 and the other treatments. The lymphocytes and neutrophils were not affected by the bedding materials showing that the litter conditions did not adversely affect the health and welfare of the birds. Serum protein, serum albumin and serum globulin were not affected by treatements (P>0.05) resulting in better protein efficiency ratio recorded in all the treatments. Serum electolytes calcium and phosphorus levels recorded in this study shows no adverse effect on the integrity of the liver in boosting cataion/anaion exchange. The haematological and serum biochemical indices recorded in this study showed no notable health challenges on the birds.


2019 ◽  
Vol 98 (4) ◽  
pp. 1678-1683 ◽  
Author(s):  
Özlem Varol Avcılar ◽  
Suzan Yalçın ◽  
E Ebru Onbaşılar ◽  
M Shazaib Ramay

2020 ◽  
Vol 33 (5) ◽  
pp. 856-865 ◽  
Author(s):  
Gyu Chul Ahn ◽  
Sun Sik Jang ◽  
Kang Yeon Lee ◽  
Youl Chang Baek ◽  
Young Kyoon Oh ◽  
...  

Objective: This study was conducted to evaluate the physicochemical properties and changes in moisture concentrations of bedding materials under the conditions of rearing Korean Hanwoo cows.Methods: Two experiments were conducted to investigate the physicochemical characteristics (Exp. I) and usefulness as beddings for rearing cattle (Exp. II) by the type of beddings such as sawdust (SD), wood shavings (WS) and sawdust+wood shavings (S+W; 1:1 in volume), and the species of pine trees from different countries of origins (China, Pinus armandii, AR; Vietnam, Pinus kesiya, KE; USA, Pinus rigida, RI).Results: In Exp. I, SD-AR showed the largest proportion (78.3%) of fine particles (250 μm+ below 250 μm) and the highest bulk density (208 kg/m<sup>3</sup>) among treatments (p<0.05). The water absorption capacity at 24 h of both S+W-RI (713%) and -KE (701%) was the highest among treatments (p<0.05) and higher than those of SD or WS alone within each species of pine tree (p<0.05). Moisture evaporation rates (%) at 12 h were ranged from 52.3 to 60.8 for SD, 69.9 to 74.4 for WS, and 72.3 to 73.5 for S+W. Total amounts (mg/m<sup>2</sup>) of ammonia emissions were the lowest (p<0.05) in KE species among the pine species within each type of bedding material, having higher ability of ammonia absorption. In Exp II, KE species in both side A and B had lower moisture concentrations (%) than other species. Regardless of types of beddings except SD-AR, moisture concentrations of beddings within a pen were higher (p<0.01) at side A than B.Conclusion: The KE species has better physical characteristics than other beddings and more useful for rearing Hanwoo cattle than other beddings, probably caused by the differences in the method and degree of wood processing rather than the species.


2016 ◽  
Vol 36 (2) ◽  
pp. 253-259 ◽  
Author(s):  
Flavia G. Jacob ◽  
Marta dos S. Baracho ◽  
Irenilza de A. Nääs ◽  
Rafael Souza ◽  
Douglas D’Alessandro Salgado

ABSTRACT International trade in broiler’ feet, mainly to Asian markets, has demanded better quality control. The objective of this research was to study the suitability of using chicken footpad surface temperature to determine early lesions of pododermatitis. The project was conducted in two houses A1 and A2) in a commercial farm during one production flock. A1 had reused litter of wood shavings and rice hulls, and A2 had a new litter of sawdust. Both houses had positive pressure ventilation. The inner area of the poultry was virtually divided into three quadrants. The footpads were checked for the feet quality, and a degree of pododermatitis was awarded. Thermal images were made to test the surface temperature of the foot and identify inflammation in a total of 30 birds per house, at ages 5, 19, 29, 28 and 40 days of grow-out. Conditions of the rearing environment as well as the surface temperature of the litter, litter moisture, and degree of compression, were recorded. The environment within the houses did not differ. The surface temperatures of the footpad did not differ between the groups. The minimum footpad surface temperatures within the scores were similar, except for the score 3, which did not occur in A1. There was a prevalence of severe injury in the house with a new litter.


2010 ◽  
Vol 9 (3) ◽  
pp. 240-243 ◽  
Author(s):  
J.L. Atencio ◽  
J.A. Fernandez ◽  
A.G. Gernat ◽  
J.G. Murillo
Keyword(s):  

Author(s):  
Richard S. Thomas ◽  
Prabir K. Basu ◽  
Francis T. Jones

Silicon tetrachloride, used in industry for the production of highest purity silicon and silica, is customarily manufactured from silica-sand and charcoal.SiCl4 can also be made from rice hulls, which contain up to 20 percent silica and only traces of other mineral matter. Hulls, after carbonization, actually prove superior as a starting material since they react at lower temperature. This use of rice hulls may offer a new, profitable solution for a rice mill byproduct disposal problem.In studies of the reaction kinetics with carbonized hulls, conversion of SiO2 to SiCl4 was found to proceed within a few minutes to a constant, limited yield which depended reproducibly on the ambient temperature of the reactor. See Fig. 1. This suggested that physical or chemical heterogeneity of the silica in the hull structure might be involved.


Genes ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 1013
Author(s):  
Bryan Irvine Lopez ◽  
Seung-Hwan Lee ◽  
Jong-Eun Park ◽  
Dong-Hyun Shin ◽  
Jae-Don Oh ◽  
...  

The authors wish to make the following corrections to this paper [...]


2021 ◽  
Author(s):  
Giuliano Cerasa ◽  
Gabriella Lo Verde

AbstractOzognathus cornutus (LeConte, 1859) (Coleoptera: Ptinidae: Ernobiinae), species native to North America, is a saproxylophagous species and is known to feed on decaying tissues within conspicuous galls and on vegetal decaying organic material such as dried fruits or small wood shavings and insect excrements in galleries made by other woodboring species. A few years after the first record in 2011, its naturalization in Italy is here reported. The insect was found as successor in galls of Psectrosema tamaricis (Diptera Cecidomyiidae), Plagiotrochus gallaeramulorum, Andricus multiplicatus and Synophrus politus (Hymenoptera Cynipidae). The galls seem to have played an important ecological role in speeding up the naturalization process. The lowest proportion of galls used by O. cornutus was recorded for P. tamaricis (23%), the only host belonging to Cecidomyiidae, while the percentages recorded for the other host species, all Cynipidae forming galls on oaks, were higher: 43.6%, 61.1% and 76.9% in A multiplicatus, S. politus and P. gallaeramulorum, respectively. Although O. cornutus is able to exploit other substrates like dried fruits and vegetables, for which it could represent a potential pest, it prefers to live as a successor in woody and conspicuous galls, which thus can represent a sort of natural barrier limiting the possible damages to other substrates.


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