Canadian journal of comparative medicine : Revue canadienne de medecine comparee最新文献_第3页

Piglet blood glutathione peroxidase levels and preweaning mortality. 仔猪血谷胱甘肽过氧化物酶水平与断奶前死亡率。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-07-01

R M Friendship, M R Wilson

{"title":"Piglet blood glutathione peroxidase levels and preweaning mortality.","authors":"R M Friendship, M R Wilson","doi":"","DOIUrl":"","url":null,"abstract":"The blood glutathione peroxidase levels of one day old piglets from 22 litters were examined. Body weight and piglet survival were monitored in order to assess the relationship between these two factors and blood glutathione peroxidase activity. The mean blood glutathione peroxidase level of one day old piglets (65 mu/gHb) was significantly lower (p0.001) than the mean level (85 mu/gHb) at weaning. The mean blood glutathione peroxidase activity of one day old piglets was not related to the size of the litter, but was related (p less than 0.1) to the mean litter blood glutathione peroxidase level at weaning time. Piglet blood glutathione peroxidase was not related to piglet body weight. The blood glutathione peroxidase level of the sows at one-day post-farrowing was not related to the mean blood glutathione peroxidase activity of their litters at one day of age but was correlated (p less than 0.1) with the mean blood glutathione peroxidase levels of their litters at weaning. Piglet viability was shown to be strongly correlated (p less than 0.001) with body weight at one day of age. The blood glutathione peroxidase level of one day old piglets was weakly associated (p less than 0.1) with piglet survival. Further work is required to clarify this latter observation, which suggests that selenium supplementation to newborn piglets may be beneficial regardless of the dams nutritional status.","PeriodicalId":9546,"journal":{"name":"Canadian journal of comparative medicine : Revue canadienne de medecine comparee","volume":"49 3","pages":"311-4"},"PeriodicalIF":0.0,"publicationDate":"1985-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1236177/pdf/compmed00003-0075.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"15154632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The concentrations of copper, zinc, manganese and selenium in the hair of newborn piglets and their dams. 初生仔猪及母猪毛发中铜、锌、锰、硒的含量。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-07-01

R M Friendship, M R Wilson, R S Gibson

引用次数: 0

Hypereosinophilic syndrome in cats: a report of three cases. 猫嗜酸性细胞增多症:附三例报告。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-07-01

S A McEwen, V E Valli, T J Hulland

引用次数: 0

Serum iron, total iron binding capacity, plasma copper and hemoglobin types in anemic and poikilocytic calves. 血清铁，总铁结合力，血浆铜和血红蛋白类型在贫血和多细胞犊牛。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-07-01

S R McGillivray, G P Searcy, V M Hirsch

引用次数: 0

The effect of dietary fibre on feed intake and growth in beagle puppies. 膳食纤维对小猎犬幼犬采食量及生长的影响。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-07-01

C B Delorme, D Barrette, R Mongeau, N Larivière

{"title":"The effect of dietary fibre on feed intake and growth in beagle puppies.","authors":"C B Delorme, D Barrette, R Mongeau, N Larivière","doi":"","DOIUrl":"","url":null,"abstract":"We studied the growth, feed intake, feed efficiency and protein efficiency ratio of groups of female Beagle puppies fed 16% or 22% crude protein rations to which 6% or 12% wheat bean was added at the expense of the total diet. The final neutral detergent fibre concentrations were 12%, 16%, 22% and 23% (dry matter basis). The addition of wheat bran to puppy rations, bringing the neutral detergent fibre up to 16% in a 21% crude protein diet had no deleterious effects on feed intake, feed and protein efficiency or growth in Beagle puppies. Over a sufficiently long period of time, the growth of this group did not differ from that of the controls (12% neutral detergent fibre, 23% crude protein) although it was higher at intermediate times. The effects of the high fibre (22 or 23% neutral detergent fibre) diets on growth, feed intake feed efficiency and protein efficiency ratio are consistent with an energy deficit resulting from the animals' inability to adapt fully to the dilution of their rations leading to lower growth, less efficient use of feed and, in the case of group 3 (22% crude protein, 22% neutral detergent fibre), a lower protein efficiency ratio. The protein efficiency ratio of group 4 (16% crude protein, 23% neutral detergent fibre) was higher than that of group 3, most likely the result of a more limiting amount of dietary protein leading to a more efficient use for growth by the animal. We have concluded that intermediate levels of neutral detergent fibre (up to 16%) were not deleterious even in puppy rations.(ABSTRACT TRUNCATED AT 250 WORDS)","PeriodicalId":9546,"journal":{"name":"Canadian journal of comparative medicine : Revue canadienne de medecine comparee","volume":"49 3","pages":"278-85"},"PeriodicalIF":0.0,"publicationDate":"1985-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1236171/pdf/compmed00003-0042.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14129315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Natural transmission of bovine leukemia virus in dairy calves by dehorning. 牛白血病病毒通过脱角在奶牛犊牛中的自然传播。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-07-01

R F DiGiacomo, R L Darlington, J F Evermann

引用次数: 0

A survey of sheep diseases in Canada. 加拿大绵羊疾病调查。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-07-01

I R Dohoo, R A Curtis, G G Finley

{"title":"A survey of sheep diseases in Canada.","authors":"I R Dohoo, R A Curtis, G G Finley","doi":"","DOIUrl":"","url":null,"abstract":"A mail survey of disease occurrence in Canadian sheep flocks was conducted. The survey, which covered the period from September 1982 to August 1983, utilized flocks on the Record of Performance (ROP) sheep program and relatively complete data were available from 116 flocks. Data about lambing rates, incidence of a variety of lamb and ewe diseases and reasons for culling were obtained. At the same time a retrospective evaluation of records of diagnoses of sheep diseases recorded at diagnostic laboratories across the country was performed. Data from the years 1978 to 1982 were obtained and summarized. A lambing percentage of 153% (1.53 lambs live born per ewe lambing) was observed and an additional 0.05 lambs were stillborn. The major identified causes of mortality amongst lambs were starvation, pneumonia, scours and accidents. Pasteurella spp. were the etiological agents most commonly associated with pneumonia in lambs and Escherichia coli had the same predominant position with regards to nonparasitic scours. A large discrepancy existed between the proportional mortality rates for internal parasites and coccidiosis as determined from the farm survey data compared to diagnostic laboratory data. This suggests that clinical parasitism may not be adequately recognized at the farm level. Abortions in ewes occurred in approximately half the flocks, but generally at a low level and no severe abortion storms occurred. Pneumonia was the most commonly identified cause of mortality in ewes and although Pasteurella spp. appear to be the most important etiological agents, regional differences were apparent.(ABSTRACT TRUNCATED AT 250 WORDS)","PeriodicalId":9546,"journal":{"name":"Canadian journal of comparative medicine : Revue canadienne de medecine comparee","volume":"49 3","pages":"239-47"},"PeriodicalIF":0.0,"publicationDate":"1985-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1236163/pdf/compmed00003-0003.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14955792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sequential morphological and quantitative changes in blood and bone marrow neutrophils in dogs with acute inflammation. 急性炎症犬血液和骨髓中性粒细胞序列形态学和定量变化。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-07-01

K A Gossett, P S MacWilliams, B Cleghorn

引用次数: 0

Interrelationships between postpartum events, hormonal therapy, reproductive abnormalities and reproductive performance in dairy cows: a path analysis. 奶牛产后事件、激素治疗、生殖异常和生殖性能之间的相互关系:通径分析。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-07-01

W G Etherington, S W Martin, I R Dohoo, W T Bosu

{"title":"Interrelationships between postpartum events, hormonal therapy, reproductive abnormalities and reproductive performance in dairy cows: a path analysis.","authors":"W G Etherington, S W Martin, I R Dohoo, W T Bosu","doi":"","DOIUrl":"","url":null,"abstract":"Path analysis was used to determine the interrelationships between postpartum administration of gonadotrophin releasing hormone and cloprostenol and the occurrence of reproductive disease and reproductive performance in dairy cows. The data analysed were those collected on 226 Holstein-Friesian cows calving in a commercial dairy herd during a 17 month period (May 1, 1981 to October 1, 1982). Cows administered gonadotrophin releasing hormone at day 15 postpartum experienced an improved rate of uterine involution as determined by rectal palpation nine days later. Although this improved rate of uterine involution reduced the risk of pyometritis, it actually directly delayed conception. Also, gonadotrophin releasing hormone therapy directly resulted in an increased incidence of pyometritis which in turn resulted in an increase incidence of cystic ovarian disease and anestrus. The occurrence of these abnormalities resulted in increased intervals from calving to first observed estrus, first service and conception. In addition to this effect, the administration of gonadotrophin releasing hormone was also associated with increased plasma progesterone concentrations at days 24 and 28 postpartum which delayed conception. Cloprostenol therapy at day 24 postpartum resulted in a decreased plasma progesterone concentration at day 28 postpartum which was directly and indirectly associated with a decrease in the calving to conception interval. The indirect effects were mediated by a reduction in days to first estrus. Cloprostenol therapy also directly resulted in a decreased calving to first observed estrus interval for reasons not attributable to the level of progesterone at day 28.","PeriodicalId":9546,"journal":{"name":"Canadian journal of comparative medicine : Revue canadienne de medecine comparee","volume":"49 3","pages":"261-7"},"PeriodicalIF":0.0,"publicationDate":"1985-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1236168/pdf/compmed00003-0025.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"15015773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tracheal versus pulmonary deposition and clearance of inhaled Pasteurella haemolytica or Staphylococcus aureus in mice. 小鼠吸入溶血性巴氏杆菌或金黄色葡萄球菌的气管与肺沉积和清除。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-07-01

L M Rodríguez, A López, M Merino-Moncada, J Martínez-Burnes, I Mondragón

引用次数: 0