The effect of dietary carnitine on semen traits of white Leghorn roosters.

Carnitine has antioxidant properties that protect sperm membranes against toxic reactive oxygen species. Carnitine also functions to reduce the availability of lipids for peroxidation by transporting fatty acids into the mitochondria for beta-oxidation to generate adenosine triphosphate (ATP) energy. Because the effects of this supplemental amino acid on the reproductive performance of the avian breeder male are unknown, the objective of the current study was to evaluate the antioxidant role of dietary L-carnitine on semen traits and testicular histology in Leghorn breeder roosters. Two experiments were conducted in which birds were fed a control diet or one supplemented with 500 mg of carnitine/kg of diet. For Experiment 1, dietary treatments were fed to older birds (n = 12 birds/treatment) when they were 58 to 62 wk of age. For Experiment 2, younger birds were fed dietary treatments between 32 to 37 wk of age (n = 14 experimental units/treatment with three roosters composing an experimental unit for a total of 84 roosters). Semen traits and lipid peroxidation of sperm, determined by measuring malonaldehyde, were examined weekly. Feeding dietary carnitine to young and aging White Leghorn roosters ad libitum for 5 wk not only improved sperm concentration during the last half of supplementation but also reduced sperm lipid peroxidation. Testicular tissue of birds fed dietary carnitine for 5 wk was preserved as indicated by a reduction in multinucleated giant cells. These results suggest that dietary carnitine has antioxidant properties that may preserve sperm membranes in roosters, thereby extending the life span of sperm.

The effect of dietary ascorbic acid on semen traits and testis histology of male turkey breeders.

A 9-mo field trial was conducted to evaluate the effects of dietary L-ascorbic acid (AA) on semen traits of 144 male turkey breeders. Dietary AA treatments were initiated when birds were 30 wk of age. Semen and blood collection began at 32 wk of age. Three treatments with four pens per treatment and 12 birds per pen were fed 0, 75, and 150 mg/kg AA during the first 4 mo of their reproductive cycle. Levels of AA were doubled in the supplemented diets to 150 and 300 mg/kg during Months 5 to 9. Semen traits and blood AA were unaffected by dietary AA. When birds were 65 wk of age, testes were removed from 12 birds per treatment for histological analysis. Multinucleated giant cells (MCG), indicative of degeneration, were observed in the testes of 7 of the 12 control birds but were absent from AA-supplemented birds (P < 0.02). The antioxidant properties of AA may delay formation of these degenerative cells. In conclusion, dietary AA levels employed in the current study did not affect semen traits or testis weight but were associated with reduced formation of MGC in the testes of 65 wk-old breeder toms.

Ascorbic acid supplementation improved antibody response to infectious bursal disease vaccination in chickens.

The purpose of the present study was to determine if supplementation of ascorbic acid (AA) to the diet would have a beneficial effect on infectious bursal disease (IBD) vaccination of chickens for protection against infectious bursal disease virus (IBDV) infection. Two hundred forty specific pathogen-free (SPF) chickens were divided into eight experimental groups. A 2 x 2 x 2 factorial arrangement in a completely randomized design was used; AA supplementation at 1,000 ppm in the diet, vaccination, and challenge were the main effects. Prior to challenge and 10 d after challenge, serum AA concentration, serum corticosterone concentration, ELISA antibody titer to IBDV, body weight, bursa-to-body weight (B:B) ratio, and bursal histological score (BHS) were determined. Nonvaccinated chickens fed a diet supplemented with AA did not exhibit clinical signs or mortality following challenge, whereas AA-unsupplemented counterparts had 100% cumulative morbidity and 30% cumulative mortality. Serum AA levels of AA-supplemented and vaccinated chickens were significantly (P < 0.05) higher than AA-unsupplemented and vaccinated chickens. Fourteen days following vaccination, significantly (P < 0.05) higher ELISA titers to IBDV were observed in vaccinated chickens supplemented with AA as compared to AA-unsupplemented counterparts. Ascorbic acid-supplemented chickens, especially those also vaccinated, had higher body weight gains as compared to the AA-unsupplemented chickens. Ascorbic acid-supplemented chickens challenged with IBDV did not show any clinical signs or mortality. The results suggest that supplementation of AA at 1,000 ppm in the diet has beneficial effects on antibody response to IBD vaccination and body weight gain.

Effect of ascorbic acid supplementation on the immune response of chickens vaccinated and challenged with infectious bursal disease virus.

One-day-old chickens were divided into two groups and reared under similar conditions. One group was fed a diet supplemented with 1000ppm ascorbic acid and the other group was fed an identical diet, but not supplemented with ascorbic acid. Both groups were vaccinated against infectious bursal disease (IBD) at 7 days of age and challenged orally with 4x10(5) of 50% embryo-lethal-dose IBDV 14 days later. The number of anti-IBDV antibody secreting cells, production of interleukin-2 (IL-2) by splenocytes, number of CD4(+), CD8(+) and IgM(+) cells in spleen and IgM(+) cells in bursa of Fabricius were compared between the two groups at 7 days (prior to vaccination), 21 days (14 days post-vaccination and prior to challenge) and 31 days (10 days post-challenge) of age. The number of CD8(+) in spleen at 7 days of age and IgM(+) cells in bursa at 7, 21 and 31 days of age were significantly higher in ascorbic acid supplemented group (P<0.05). Production of IL-2 by splenocytes was higher as indicated by higher stimulation indices in ascorbic acid supplemented group. The number of anti-IBDV IgG antibody secreting cells in spleen at 21 and 31 days of age were significantly higher in ascorbic acid supplemented group (P<0.05). Dietary supplementation of ascorbic acid may ameliorate the immunosuppression caused by IBDV vaccination and improve humoral and cellular immune responses.

Unique changes found on the Qi Gong (Chi Gong) Master's and patient's body during Qi Gong treatment; their relationships to certain meridians & acupuncture points and the re-creation of therapeutic Qi Gong states by children & adults.

Changes taking place in both Qi Gong Masters and their patients during Qi Gong treatment were evaluated using the Bi-Digital O-Ring Test. During the Qi Gong state, on the Qi-Gong Master's body, as well as the body of the patient being treated, acupuncture points CV5 (Shi Men) and CV6 (Qi Hai)-- located below the umbilicus-- show changes from +4 in the pre-Qi Gong state to between -3 and -4 during the Qi Gong state. Before and after the Qi Gong, there is a normal +4 response to the Bi-Digital O-Ring Test at these acupuncture points. Similar changes were also observed on acupuncture points CV17 (Shan Zhong), CV 22 (Tian Tu), Yin Tang (at an area just between the eyebrows: the pituitary gland representation area, colloquially known as the "third eye") and GV20(Bai Hui), the entire pericardium meridian & triple burner meridian, their acupuncture points, the adrenal glands, testes, ovaries and perineum, as well as along the entire spinal vertebrae, particularly on and above the 12th thoracic vertebra, medulla oblongata, pons, and the intestinal representation areas of the brain located just above and behind the upper ear. Using these findings as criteria for evaluating the effectiveness of reaching the Qi Gong state, we were able to reproduce during the experimental trials similar changes in ourselves and the patient being treated with therapeutic effects comparable to those of the Qi Gong Master. Beneficial effects of external Qi Gong treatment given by a Qi Gong practitioner 1 to 3 times for 10-20 seconds each (although most Qi Gong masters take 3-20 minutes per treatment) often resulted in improvement of circulation and lowering of high blood pressure, as well as relaxation of spastic muscles, relief of pain, and enhanced general well-being, all of which resemble acupuncture effects. In order to reproduce the same procedure with others, we selected 4 children ranging between 8 and 11 years of age who had no knowledge of Qi Gong or Oriental medicine. One of these four children, the 8 year old, was able to consistently reach the same Qi Gong state after less than a half day and another child, 11, after less than 2 days. Within a week, the other two were sometimes able to reproduce the Qi Gong state but not always. Using the Qi Gong state thus obtained, it was found that this type of Qi Gong energy is directed to specific directions from the hand and can even penetrate wooden or metal doors.(ABSTRACT TRUNCATED AT 400 WORDS)