Veterinarski Arhiv 

About: Veterinarski Arhiv is an academic journal published by University of Zagreb. The journal publishes majorly in the area(s): Biology & Medicine. It has an ISSN identifier of 0372-5480. It is also open access. Over the lifetime, 1438 publications have been published receiving 11431 citations.

Activities of AST, ALT and GGT in clinically healthy dairy cows during lactation and in the dry period.

Abstract: th day of lactation, the second from the 46th until 90th day of lactation, and the third group from the 91st day of lactation until the end of milk production. Cows in the dry period comprised the fourth group. The highest activity of AST was determined in the first production period, while enzyme activity in the second and third periods was higher than in the dry period. ALT activity showed a statistically significant increase from the 46 th day of lactation until the dry period, and activity in the second and third periods was statistically higher than in the dry period. GGT activity in the first production period and in the dry period was statistically higher in comparison with the second and third periods. Research results showed a significant influence of milk production and the dry period on the activities of examined enzymes in the blood plasma, and we can conclude that there is a need for constant monitoring of the described parameters during production.

A histopathological study of carp (Labeo rohita) exposed to hexachlorocyclohexane.

Abstract: Indian major carp (Labeo rohita) were exposed to 1/10 and 1/5 sub-lethal doses of hexachlorocyclohexane during a 45-day trial period. Fish were sacrificed at the end of the trial period to study light microscopic changes associated with toxicity. Organ tissues, viz., liver, kidney, gill, skin, muscle, heart and brain were examined for histopathological study. Swelling of the hepatocytes with diffuse necrosis and marked swelling of blood vessels were observed in the liver tissue. Tubules of the kidney were distended, with tubular cells of posterior kidney exhibiting marked necrotic changes. Gill tissue showed fusion of primary lamellae, congestion of blood vessels and hyperplasia of branchial plates. Pericardial sac was moderately thickened and extensively infiltrated with leucocytes. Marked neuronal cell degeneration with loss of Nissl substances and microgial nodules could be observed at the cerebrum.

Effect of feeding powdered Nigella sativa L. seeds on poultry egg production and their suitability for human consumption.

Abstract: The effect of Kalongi (Nigella sativa, L.) seeds was studied on the performance of layers and cholesterol contents of their egg-yolks. A total of 96 White-Leghorn birds of 40 weeks of age and at the egg-laying stage were randomly divided into 12 experimental units, eight birds in each unit. These units were randomly allotted to four treatments in such a way that each treatment received 3 experimental units. Four test rations were prepared by supplementing a commercial layer-ration with powdered Kalongi seeds at the rates of 0.0, 0.5, 1.0 and 1.5%. Effects of feeding these rations on feed intake, egg production, egg mass, egg shell thickness, Haugh unit, yolk index, blood spots, meat spots and total cholesterol in eggs were determined after a period of 12 weeks. Blood samples of the two birds selected at random from each replicate were taken at 0, 6 and 12 weeks. The serum obtained from these samples was analyzed for total cholesterol, low-density lipoproteins, high-density lipoproteins and triglycerides. Data on feed intake, feed refused and egg production were used to calculate the feed conversion ratio. Results showed that Nigella sativa seeds significantly (P<0.05) increased egg production, egg mass, eggshell thickness and Haugh unit. However, there was no significant (P>0.05) change in yolk index, blood and meat spots. The Nigella sativa seeds also significantly (P<0.05) reduced yolk cholesterol contents. The serum triglycerides, low-density lipoprotein, cholesterol and total cholesterol levels were also reduced, while serum high-density lipoprotein cholesterol level was increased by supplementing the commercial layer-ration with Nigella sativa seeds. Introduction The poultry industry has been considered as the second largest industry in Pakistan. This sector has not only provided best quality, low cholesterol meat but also highly nutritious eggs to consumers. Poultry meat is lower in cholesterol than red meat but poultry eggs have a high concentration of cholesterol, i.e. 213 mg per egg (ANONYMOUS, 1989). Normally, a person is able to consume about 300 mg. of dietary cholesterol per day to avoid the risks associated with coronary heart disease (ANONYMOUS, 1986). This has necessitated a drastic reduction or even elimination of egg intake in the human diet in order to stay below the recommended level. The high cholesterol level in eggs has been a possible contributory factor to the decrease their consumption. There is a well-known religious instruction which goes as follows: “There exists in the black seed (Kalongi) health and a cure for …

Induced spawning of spotted murrel (Channa punctatus) and catfish (Heteropneustes fossilis) using human chorionic gonadotropin and synthetic hormone (ovaprim).

Abstract: Induced spawning of the spotted murrel (Channa punctatus) and catfish (Heteropneustes fossilis) was successfully carried out using ovaprim and human chorionic gonadotropin (HCG). Breeders were administered a single intramuscular injection of the hormones at varying dosages. Fecundity in C. punctatus was 3273 ± 75 for ovaprim and 1253 ± 126 for HCG, whereas in H. fossilis it was 6692 ± 790 for ovaprim and 82922 ± 5432 for HCG. Successful spawning of C. punctatus was observed at 0.3 and 0.5 ml/kg body mass for ovaprim and at 2000 and 3000 IU/ kg body mass for HCG. For H. fossilis successful spawning was observed at 0.3, 0.5 and 0.7 ml/ kg body mass for ovaprim and 1000, 2000, and 3000 IU/kg body mass for HCG.