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1.
A 4‐week feeding experiment was conducted to determine the effects of graded levels of dehulled and cooked castor oil bean (Ricinus communis L) meal on the performance of broiler finishers. Castor oil bean seeds were dehulled and detoxified by cooking in two stages at 100 °C for 50 min per cooking. Sixty 6‐week‐old broiler birds (Anak strain) were randomly divided into four groups of 15 birds each. The groups were fed four isocaloric (2.90 Mcal of metabolizable energy/kg) and isonitrogenous (21% crude protein) diets containing 0%, 10%, 15% and 20% dehulled and cooked castor oil bean meal (CBM) for 4 weeks. Results showed that there were significant (p < 0.05) differences among treatments in average daily feed intake, final body weight, average daily weight gain (ADWG), feed conversion ratio (FCR) and protein efficiency ratio (PER). Birds fed diets containing 0% and 10% CBM had significantly (p < 0.05) higher feed intake than birds on 15% and 20% CBM diets. The lowest feed intake was recorded at the 20% CBM inclusion level. The highest ADWG was observed in birds fed 0% CBM diet, but this was not significantly (p > 0.05) different from the ADWG of birds on 10% CBM diet. Birds fed diets containing10% and 15% levels of CBM had similar and non‐significant (p > 0.05) ADWG. Birds fed 20% CBM diet had the least (p < 0.05) ADWG. Birds fed 0%, 10% and 15% CBM diets had similar FCR and this was significantly (p < 0.05) lower and better than that of birds on 20% CBM diet. The least (p < 0.05) PER was observed in birds fed 20% CBM diet. Birds fed 20% CBM diet had significantly (p < 0.05) higher packed cell volume (PCV) than birds on 10% and 15% CBM diets. Birds fed 0%, 10% and 15% CBM diets had similar (p > 0.05) PCV values. Birds fed diets containing 0%, 10% and 15% levels of CBM had similar and significantly (p < 0.05) lower heamoglobin than birds fed 20% CBM diets. There were also significant (p < 0.05) differences among treatments in dry matter (DM), nitrogen, ether extract (EE) and nitrogen‐free extract (NFE) retention. Birds fed 0% CBM diet had significantly (p < 0.05) higher retention of DM, nitrogen and NFE than birds on 10%, 15% and 20% CBM diets. Birds fed 10% CBM diet had significantly (p < 0.05) higher DM, nitrogen and NFE retention than birds on 15% and 20% CBM diets. The lowest retention of DM, nitrogen and NFE was recorded at the 20% CBM inclusion level. Birds fed 0% CBM diet had significantly (p < 0.05) higher EE retention than birds on 15% and 20% CBM diets. The lowest EE retention was observed at the 20% CBM inclusion level. The results of the study indicate that up to 10% dehulled and cooked CBM can be included in broiler finisher rations for optimum performance. 相似文献
2.
Ani Englund Leena Kovanen Sirkku T Saarikoski Jari Haukka Antti Reunanen Arpo Aromaa Jouko Lönnqvist Timo Partonen 《Journal of circadian rhythms》2009,7(1):5-9
Background
Mammalian circadian clocks control multiple physiological events. The principal circadian clock generates seasonal variations in behavior as well. Seasonality elevates the risk for metabolic syndrome, and evidence suggests that disruption of the clockwork can lead to alterations in metabolism. Our aim was to analyze whether circadian clock polymorphisms contribute to seasonal variations in behavior and to the metabolic syndrome. 相似文献3.
Ani K Gupta 《中国禽业导刊》2008,25(15)
成为真正的国际化公司是许多中国企业的目标,但在国际化的道路上,许多中国企业却脚步踉跄。与之相比,印度企业的国际化道路却平坦得多,是什么原因造成了这种差异？善于学习的中国企业可以从中借鉴什么？ 相似文献
4.
INTRODUCTION: Oxidation of low density lipoprotein (LDL) has been strongly implicated in the phathogenesis of atherosclerosis. The use of oxidants in dietary food stuff may lead to the production of oxidized LDL and may increase both the development and the progression of atherosclerosis. The present work investigated the effects of some elements including: copper (Cu), iron (Fe), vanadium (V) and titanium (Ti) on in vitro LDL oxidation quantitatively. METHODS: The first LDL fraction was isolated from fresh plasma by single vertical discontinuous density gradient ultracentrifugation. The formation of conjugated dienes and thiobarbituric acid reactive substances and increase in electrophoretic mobility of LDL were monitored as markers of the oxidation of LDL. RESULTS: It was demonstrated that Cu, Fe, V and Ti exhibited strong oxidant activity in this respect (P<0.001). Oxidation of LDL in the presence of Cu was more and appeared to be in this order Cu>Fe>V>Ti. DISCUSSION: Cu, Fe, V and Ti are redox-active transition metals that may cause oxidative damage to lipids, proteins and DNA molecules. We suggest that these elements may also influence the oxidation of LDL in vivo, which could increase both the development and progression of atherosclerosis. 相似文献
5.
Herak-Perković V Grabarević Z Banić M Anić B Novosel V Pogacnik M 《Journal of veterinary pharmacology and therapeutics》2001,24(4):267-273
The aim of the study was to demonstrate the effects of dopaminergic drugs on 2,4-dinitrofluorbenzene (DNFB) induced experimental inflammatory bowel disease (IBD) in previously sensitized BALB/c mice. The number and extent of ulcerations and erosions, the intensity of haemorrhages, oedema, and accumulation of neutrophils and eosinophils within colonic lamina propria and submucosa were scored and statistically evaluated. The 180 BALB/c mice, were allocated into three equal groups. The mice in the first experimental group were treated with domperidone (DP), a peripheral dopamine (DA) antagonist. The mice from the second experimental group were treated with bromocriptine (BC), a dopamine agonist. The mice from the control group were treated with an equivalent volume of normal saline in the same manner. Ten animals from each group were killed on days 1, 2, 3, 5 and 10, subsequent to the challenge enema of DNFB solution. Gross and microscopic examination of the colon was performed. Treatment with BC resulted in clinical improvement and decreased mortality rate by 2 of 60 (3%), while domperidone treatment increased mortality rate to 12 of 60 (20%) compared with the controls [4 of 60 (6%)]. The analysis of the microscopic lesions indicated that the beneficial effects of BC were the result of maintenance of vascular integrity. 相似文献
6.
宫本一 《河北农业大学学报》1991,14(3):62-68
本文研究对于多胎动物利用约束最大似然法(REML)估计父畜、父内窝间和剩余误差的方差组分。以猪达到105公斤体重的日龄(D105)和背膘厚度(ABF)为例,把D105和ABF的记录都调整到以105公斤为基础。采用的混合模型包括出生一年一月(BYM)、猪的性别和母猪产次的固定效应,随机效应是父畜、BYM和父畜内的窝及剩余误差。利用REML来估计父畜的方差组分(0 0,BYM和父畜内的窝方差组分和剩余误差。假定这些方差来源内的每个随机效应相互独立和同一分布,即Var=Iσ_s~2,VasIσ_1~2Var(e)=Iσ_e~2;随机效应间不存在协方差,即COV=0,Cov=0,COV=0。遗传力(h~2)和同窝小猪的共同环境效应(C~2)的估值分别按=和=计算。 C 相似文献
7.
Productivity constraints on Citron-crested Cockatoos in a rich community of large hole-nesting birds
Knowledge of breeding success and its limiting factors is crucial in assessing species'conservation needs.As cavity-nesters,parrots are particularly influenced ... 相似文献
8.
杂种优势的统计检验 总被引：1，自引：0，他引：1
王继华 《河北农业大学学报》1991,14(3):69-74
本文提出了一种新的对杂种优势进行统计检验的方法。证明了从统计上对杂种优势、优势率和优势比等统计量的显著性检验是等价的。这就把对它们进行显著性检验的方法统一了起来。 相似文献
9.
Yukie Shiobara Mioko Yoshino Atsuko Uragami Ani Widiastuti Akifumi Omori Keiko Kuba Harufumi Saito Yukimasa Hirata Takahiro Sonoda Takeharu Koizumi Tatsuo Sato 《Euphytica》2011,177(1):91-97
Asparagus (Asparagus officinalis L.) is a dioecious plant. In general, male and female plants are used for open-field culture and intensive cultivation, respectively. Farmers distinguish between the sexes by observing the form of the flower organs. However, because flowering begins 2?C3 years after planting, the sexes cannot be differentiated at transplantation by using this method, and planting of an all-male population is not possible. In this study, the usefulness of loop-mediated isothermal amplification (LAMP), a simple method of gene amplification, for sex distinction at the DNA level was determined. In addition, the phenotypic differences in seeds and seedlings of male and female plants were investigated for application as a method of early sex distinction. By using the LAMP method, the sex could be correctly identified in 100% of the seedlings, suggesting that this method is effective for sex distinction at the gene level. Principal component analysis was conducted with 11 selected parameters after investigating the seeds and seedlings of both male and female plants. The results revealed that male plants tend to have many stalks or cladophylls and female plants tend to have large plant forms, suggesting that the sexes can be distinguished by the external appearance of the seedlings before planting. LAMP and observation of the seedling phenotypes could be useful methods of sex distinction for increasing the efficiency of asparagus breeding. 相似文献
10.
Enhancing the food security of upland farming households through agroforestry in Claveria,Misamis Oriental,Philippines 总被引：1，自引：1，他引：0
Damasa B. Magcale-Macandog Fe M. Rañola Roberto F. RañolaJr. Princess Alma B. Ani Niño B. Vidal 《Agroforestry Systems》2010,79(3):327-342
The impact of agroforestry on food security of upland farmers is least recognized and appreciated given that the linkage between
them is quite complex and not well understood. The crucial role of agroforestry in enhancing food supply and augmenting family
income is commonly ignored. This study aimed to get a deeper understanding of the role of agroforestry in ensuring food security
of farming households in the Philippine uplands. A combination of participatory approaches including participatory rural appraisal,
household survey, focused group discussions, field experiments and simulation modeling were used for the study conducted in
Claveria, Northern Mindanao, Philippines. The first major finding was that the prime responsibility for ensuring adequacy
of food production and supply for the farming households rested on the husband and wife. The second major finding based on
the simulation results was that agroforestry increased and stabilized corn yields under hedgerow system. Moreover, fruits
from perennial crops and trees served as secondary food crops especially during lean months of food supply. The last major
finding was that the adoption of agroforestry significantly increased the level of benefits by around 42–137%, compared with
the low income from continuous annual monocropping. The key to making upland farm households food secure is to increase the
productivity of their farms and home gardens. A good start is to promote the agroforestry system in upland areas, and it is
thereby recommended that both national and local government units mainstream their policies and efforts toward promotion of
agroforestry adoption in the Philippine uplands. 相似文献