Teacher training     

Lopresti VC 《Science (New York, N.Y.)》1987,235(4790):730b

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Response of egg weight to the inclusion of various fats in layer diets     

R. H. Scragg  N. B. Logan  N. Geddes 《British poultry science》1987,28(1):15-21

1. Brown egg layers were fed diets differing in oil content, oil source and linoleic acid concentration and the effect on performance from 22 to 69 weeks of age was studied.

2. The birds responded with an increasing mean egg weight up to a linoleic acid intake of 2.75 g/bird d.

3. Increasing the intake of readily absorbable oil without increasing linoleic acid concentration did not increase mean egg weight.  相似文献   

Congenital skeletal deformity syndrome   总被引：1，自引：1，他引：0       下载免费PDF全文

Ribble CS  Janzen ED 《The Canadian veterinary journal. La revue veterinaire canadienne》1987,28(4):160

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Infestation in the dog by the paralysis tick Ixodes holocyclus 3. Respiratory effects     

J. E. ILKIW  D. M. TURNER 《Australian veterinary journal》1987,64(5):142-144

To assess respiratory function in dogs with tick paralysis, respiratory measurements were recorded on 14 dogs experimentally infested with Ixodes holocyclus. There was a progressive fall in respiratory rate with no change in tidal volume, which resulted in a significant fall in minute respiratory volume in the latter stages of the disease. The fall in respiratory rate was possibly central in origin and was accompanied by an increased alveolar-arterial oxygen tension difference, probably caused by pulmonary congestion and oedema. The "grunting" respiration seen in tick paralysis was due to closure of the vocal cords during expiration and could represent an attempt to re-expand collapsed parts of the lung.  相似文献   

Shapiro to leave michigan for princeton     

N C 《Science (New York, N.Y.)》1987,236(4802):665

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Female Math Anxiety on the Wane: But data from standardized achievement tests in math and science still show male superiority, particularly among the highest scorers     

Holden C 《Science (New York, N.Y.)》1987,236(4802):660-661

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Textbook Controversy Intensifies Nationwide: Court cases and censorship attempts reflect broader conflict over values, as well as problems with the quality of teaching materials     

Holden C 《Science (New York, N.Y.)》1987,235(4784):19-21

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Yeasts: yeast cell biology     

Dickson RC 《Science (New York, N.Y.)》1987,235(4786):374

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Early epidemiology: yellow Fever in the north     

Hannaway C 《Science (New York, N.Y.)》1987,237(4814):543

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Effect of ivermectin and oxfendazole on shedding of larvae of the lungworm (Dictyocaulus viviparus) by red deer (Cervus elaphus)     

Bowie JY  Mackintosh CG  Mason PC 《New Zealand veterinary journal》1987,35(1-2):8-10

Thirty eight newly weaned hinds were randomly allocated to one of two equal groups. One group received ivermectin, the other, oxfendazole at dose rates of 0.2 mg/kg and 4.5 mg/kg, respectively. All deer were drenched four times and were grazed on pasture. Both anthelmintics reduced D. viviparus faecal larval counts to low levels 20 days after dosing, but the mean larval output and the proportion of deer shedding D. viviparus larvae at 27 and 33 days after treatment, were significantly lower in the ivermectin treated group. There was no significant difference in weight gain between the two groups throughout the trial. This study suggests that ivermectin prevents reinfection with D. viviparus for approximately 14 days longer than oxfendazole.  相似文献