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Beitrage zur tropischen Landwirtschaft und Veterinarmedizin最新文献

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Effect of monensin on the performance of grazing Boran Zebu bulls and Ogaden sheep during the dry season in Ethiopia. 莫能菌素对埃塞俄比亚旱季放牧博兰Zebu牛和欧加登羊生产性能的影响。
Beitrage zur tropischen Landwirtschaft und Veterinarmedizin Pub Date : 1984-01-01
G Flachowsky, K Banjaw, T Ayalew
{"title":"Effect of monensin on the performance of grazing Boran Zebu bulls and Ogaden sheep during the dry season in Ethiopia.","authors":"G Flachowsky,&nbsp;K Banjaw,&nbsp;T Ayalew","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Two short-term experiments were carried out with the polyether antibiotic monensin in East Ethiopia during the dry season. Monensin was given to 10 Boran Zebu bulls (84 days) and 15 female Ogaden sheep (112 days). All animals were grazing all day long on very poor rangeland. In the barn during the night, the animals were fed low concentrates, supplemented with 100 mg monensin per animal and day for bulls and 15 mg for sheep. The animals of the control croup did not receive any supplements. Monensin addition increased the daily weight gain of bulls from 15 to 89 g/animal (alpha greater than 0.05) and decreased the weight losses of the Ogaden sheep from 22 to 12 g/animal per day. The feed intake of grazing animals was not registered. Further experiments are recommended including more animals and longer experimental periods with antibiotics influencing the rumen fermentation to be carried out under tropical rangeland conditions.</p>","PeriodicalId":75586,"journal":{"name":"Beitrage zur tropischen Landwirtschaft und Veterinarmedizin","volume":"22 4","pages":"415-9"},"PeriodicalIF":0.0,"publicationDate":"1984-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17585304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dissipation of endosulfan residues from unprocessed and processed brinjal (Solanum melongena L.) fruits. 未加工和加工茄子果实中硫丹残留量的耗散。
Beitrage zur tropischen Landwirtschaft und Veterinarmedizin Pub Date : 1984-01-01
P R Yadav, S S Dashad
{"title":"Dissipation of endosulfan residues from unprocessed and processed brinjal (Solanum melongena L.) fruits.","authors":"P R Yadav,&nbsp;S S Dashad","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In the summer season of 1980, brinjal crop (Solanum melongena L.) raised under field conditions in the Hissar region, India, was studied for endosulfan residues, with particular reference to the influence of washing and boiling/cooking of the fruits on the persistence of endosulfan. Endosulfan was applied three times at intervals of 15 days each. For analysis, fruits were sampled from the first and third spraying at 0, 1, 3, 6, 10, and 15 days. They were analysed colorimetrically for residues. Recovery of endosulfan was 99.61%. In unprocessed fruits, the initial samples contained 2.13 and 2.53 ppm, the final samples 0.12 and 0.25 ppm, which means an endosulfan dissipation of 90.12 and 94.37%. With increasing time the dissipation speed decreased. The half-life values were 4.01 and 5.20 days. Washing and boiling/cooking the fruits decreased the endosulfan content by 42.06 to 64.41 and 67.94 to 78.66%, respectively. The endosulfan residues were below the prescribed tolerance level of 2 ppm within one day of spraying in unprocessed fruits, while in washed and boiled/cooked fruits, even the initial deposits were below the tolerance level.</p>","PeriodicalId":75586,"journal":{"name":"Beitrage zur tropischen Landwirtschaft und Veterinarmedizin","volume":"22 1","pages":"83-9"},"PeriodicalIF":0.0,"publicationDate":"1984-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17785841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cultural control of the root nematodes Pratylenchus indicus in rice through crop rotations. 轮作对水稻根线虫的栽培控制。
Beitrage zur tropischen Landwirtschaft und Veterinarmedizin Pub Date : 1983-01-01
J S Prasad, B T Moorty, Y S Rao
{"title":"Cultural control of the root nematodes Pratylenchus indicus in rice through crop rotations.","authors":"J S Prasad,&nbsp;B T Moorty,&nbsp;Y S Rao","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Pratylenchus indicus nematodes cause damage to the roots of rice plants, which may lead to considerable yield reductions. In field trials with six different rice-based rotations it was tested whether the inclusion of other crops into the rotation can influence the population of Pratylenchus indicus. Investigation of soil samples and roots showed that rice, safflower, and tobacco increased the nematodes, whereas fallowing or growing Phaseolus radiatus L. decreased them.</p>","PeriodicalId":75586,"journal":{"name":"Beitrage zur tropischen Landwirtschaft und Veterinarmedizin","volume":"21 2","pages":"231-4"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17681182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Status and perspectives of agrarian production and food supply in developing countries]. [发展中国家农业生产和粮食供应的现状和前景]。
Beitrage zur tropischen Landwirtschaft und Veterinarmedizin Pub Date : 1983-01-01
K J Michalski
{"title":"[Status and perspectives of agrarian production and food supply in developing countries].","authors":"K J Michalski","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In the early 1980s the agrarian-economic situation and the food supply of most developing countries is characterized by serious complications and vast contradictions. Contrary to the predictions made at the world food conferences in 1970 and 1974, a general retardation has taken place in the rates of increase of food production, and the nutrient crisis has extended. The FAO prognosis 'Agriculture: Toward 2000'- based on annual growth rates of 4%--outlines the enormous problems to be solved in the struggle against hunger and malnutrition in the developing countries. Because of its inadequacies and contradictions this document of the FA cannot, however, be considered as a complex strategy for the fight against hunger, poverty, and underdevelopment, or as a general orientation for shaping the agrarian and nutritional policy in the developing countries.</p>","PeriodicalId":75586,"journal":{"name":"Beitrage zur tropischen Landwirtschaft und Veterinarmedizin","volume":"21 3","pages":"255-66"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17707780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Changes in the electrolytes of serum and urine with heat exposure in the bovine. 牛热暴露时血清和尿液电解质的变化。
Beitrage zur tropischen Landwirtschaft und Veterinarmedizin Pub Date : 1983-01-01
M K Shebaita, A Pfau
{"title":"Changes in the electrolytes of serum and urine with heat exposure in the bovine.","authors":"M K Shebaita,&nbsp;A Pfau","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Six mature Friesian bulls with an average body weight of 562 kg were kept - after a preparatory period - in a controlled climatic barn at 30 degrees C and 70% relative humidity for three weeks. They were fed 3.6 kg concentrates and 4 kg hay and water ad libitum. The rectal temperature remained unchanged under heat exposure. Na+, K+, and Ca++ increased in the blood serum, but decreased in the urine. Whereas PO4---increased in the serum and in the urine, the values for SO4--decreased in the serum and in the urine. The serum value for Cl- did not change, but the Cl- value decreased in the urine. The changes in the electrolyte metabolism at high environmental temperatures are important means of extending the discovery procedures for heat stress in cattle.</p>","PeriodicalId":75586,"journal":{"name":"Beitrage zur tropischen Landwirtschaft und Veterinarmedizin","volume":"21 4","pages":"445-51"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17721824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Phenotypic and genetic correlation between egg characters and embryo and chick weights of Alexandria and Fayoumi chickens. 亚历山大鸡和法优米鸡蛋性状与胚重和鸡重的表型和遗传相关性。
Beitrage zur tropischen Landwirtschaft und Veterinarmedizin Pub Date : 1983-01-01
M A Kosba, S M Eid
{"title":"Phenotypic and genetic correlation between egg characters and embryo and chick weights of Alexandria and Fayoumi chickens.","authors":"M A Kosba,&nbsp;S M Eid","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>At the Poultry Research Centre of Alexandria University phenotypic and genetic correlations were estimated on the basis of dam averages of three populations between egg quality features, embryo and chick weights. The relationships of individual egg weight, shell weight, and shell thickness as well as the egg shape on the one hand and the embryo weight at 6, 12, and 18 days of age on the other hand were weak and exhibited no uniform trend. The correlations between egg weight and chick weight were also low. The genetic correlations between shell weight and shell thickness and the chick weight up to the eighth week were even negative.</p>","PeriodicalId":75586,"journal":{"name":"Beitrage zur tropischen Landwirtschaft und Veterinarmedizin","volume":"21 4","pages":"453-8"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17721825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Heritability estimates for the duration of fertility in Alexandria and Fayoumi chickens. 亚历山大鸡和法尤米鸡生育力持续时间的遗传力估计。
Beitrage zur tropischen Landwirtschaft und Veterinarmedizin Pub Date : 1983-01-01
M A Kosba, S M Hamdy, M K Shebl
{"title":"Heritability estimates for the duration of fertility in Alexandria and Fayoumi chickens.","authors":"M A Kosba,&nbsp;S M Hamdy,&nbsp;M K Shebl","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Two Alexandria lines selected for high (HL) and low (LL) body weight and one unselected Fayoumi line were compared for the duration of fertility in both sexes. In the parents, LL had a significantly higher duration of fertility than HL and Fayoumi. In the female progeny, the mean duration of fertility in HL, LL, and Fayoumi were 9.76, 11.20, and 10.66 days, respectively, and the difference among them were highly significant. Based on the sire-plus-dam components of variance, the heritability estimates of the duration of fertility were determined. Heritability estimates obtained by regressed offspring mean on dam estimate were 0.44 in HL, 0.14 in LL, and 0.93 in the Fayoumi. It can be concluded that the genetic variance of this feature - duration of fertility - was relatively high.</p>","PeriodicalId":75586,"journal":{"name":"Beitrage zur tropischen Landwirtschaft und Veterinarmedizin","volume":"21 3","pages":"365-9"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17707781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Haemoglobin values and some biochemical parameters of different breeds and sexes of pigs in a tropical humid environment. 热带湿润环境下不同品种和性别猪血红蛋白值及一些生化参数。
Beitrage zur tropischen Landwirtschaft und Veterinarmedizin Pub Date : 1983-01-01
O B Kasali, B L Fetuga
{"title":"Haemoglobin values and some biochemical parameters of different breeds and sexes of pigs in a tropical humid environment.","authors":"O B Kasali,&nbsp;B L Fetuga","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The serum values were determined of haemoglobin (Hb), total protein, uric acid, citrulline, and transaminases (SGOT and SGPT) in 47 boars and non-pregnant gilts of six breeds: eight pure Large Whites (LW), seven pure Durocs (DR), eight Landraces (LR), eight indigenous (IND), eight three-way crosses (LW X DR X Hampshire), and eight two-way crosses (LW X DR). The urea values of the serum were influenced significantly (P less than 0.01) by the breed and sex, the levels of Hb and SGOT were only affected by the breed. Besides, a significant (P less than 0.01) influence was found of the sex on the uric acid values. The total serum protein and the SGPT activities were not significantly affected by either breed or sex.</p>","PeriodicalId":75586,"journal":{"name":"Beitrage zur tropischen Landwirtschaft und Veterinarmedizin","volume":"21 2","pages":"219-24"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17681181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Flushing treatments of subtropical ewes bred three times each within two years. 亚热带母羊两年内繁殖三次的冲洗处理。
Beitrage zur tropischen Landwirtschaft und Veterinarmedizin Pub Date : 1983-01-01
I F Marai, A M Aboul-Naga, F Z Swedan, A S El-Snobsksny, A A Abdel Malek, N R Saad
{"title":"Flushing treatments of subtropical ewes bred three times each within two years.","authors":"I F Marai,&nbsp;A M Aboul-Naga,&nbsp;F Z Swedan,&nbsp;A S El-Snobsksny,&nbsp;A A Abdel Malek,&nbsp;N R Saad","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>389 Ossimi ewes were given 45 days of flushing treatment with different protein levels (100%, 125%, and 150%) and different sources of protein (plant protein, fish meal, and urea) during a period of two years three weeks each before a mating season and with three breedings during that time. At high protein levels and application of plant protein higher live weight increases were achieved during the flushing period. The reproduction performance was not influenced. The conception rate improved with increasing protein treatments. Plant protein treatments gave better results in the conception rate, twinnings and lambings. September proved a better month for mating than did January and May. There was no significant influence of the age and the live weight of the ewes on the daily body weight gain and the reproductive performance of the ewes. Only the rate of twinning increased significantly with increasing live weight.</p>","PeriodicalId":75586,"journal":{"name":"Beitrage zur tropischen Landwirtschaft und Veterinarmedizin","volume":"21 2","pages":"213-8"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17681255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Genetic and phenotypic correlations between duration of fertility and certain traits in Alexandria and Fayoumi chickens. 亚历山大鸡和法优米鸡育期与某些性状的遗传和表型相关性。
Beitrage zur tropischen Landwirtschaft und Veterinarmedizin Pub Date : 1983-01-01
M A Kosba, S M Hamdy, M K Shebl
{"title":"Genetic and phenotypic correlations between duration of fertility and certain traits in Alexandria and Fayoumi chickens.","authors":"M A Kosba,&nbsp;S M Hamdy,&nbsp;M K Shebl","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Two Alexandria lines selected for a high (HL) or low (LL) eight-week body weight, and an unselected Fayoumi line were used to study the duration of fertility, fertility percentage, fertility percentage duration, age at sexual maturity, egg number in the first ninety days of laying, egg weight, eight-week body weight, and body weight at sexual maturity. The fertility could be improved through selection for duration of fertility. Within the lines, early mature pullets had a longer duration of fertility than those matured later. The duration of fertility within the lines is a rather good indicator of eight-week body weight. Within the lines, the duration of fertility increases with the increase in body weight at the age of sexual maturity.</p>","PeriodicalId":75586,"journal":{"name":"Beitrage zur tropischen Landwirtschaft und Veterinarmedizin","volume":"21 2","pages":"207-11"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17681254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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