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  • Title: Semen characteristics and biochemical composition of cloacal foam of male Japanese quails (Coturnix coturnix Japonica) fed diet incorporated with selenium.
    Author: Biswas A, Mohan J, Mandal AB, Lal N.
    Journal: J Anim Physiol Anim Nutr (Berl); 2017 Apr; 101(2):229-235. PubMed ID: 27486071.
    Abstract:
    An attempt was made to investigate the effect of dietary selenium (Se) on physical and cloacal gland size, foam production, biochemical composition of foam and semen biochemical characteristics of male Japanese quail (Coturnix coturnix Japonica). Two hundred twenty-five (225)-day-old male Japanese quail were randomly distributed to three dietary treatment groups for a period of 20 weeks. Each treatment comprised of three replicates, each containing 25 chicks. Three experimental diets were supplemented with 0, 0.5 and 1.0 mg Se/kg (T1 , T2 and T3, respectively), and diet T1 was considered as control. Sodium selenite was used as the source of selenium. All the birds were provided with feed and water ad libitum. Cloacal foam characteristics, that is cloacal gland index and foam weight, were significantly higher in T2 group. However, body weight, frequency of foam discharge and testes weight (left and right) did not differ significantly (p > 0.05). Physical characteristics of semen, that is semen volume and sperm concentration, did not differ (p > 0.05) among the Se-treated groups. The sperm motility, live-dead count and abnormality improved significantly (p < 0.05) in 0.5 mg/Se-supplemented group compared to 0 or 1.0 mg/Se-supplemented groups. Similarly, fertility and hatchability percentages were higher (p < 0.05) in 0.5 mg/Se-supplemented group than in control or 1.0 mg/Se-supplemented counterparts. The biochemical characteristics of foam in terms of total protein, acid phosphatase (ACP) and nitric oxide did not differ (p > 0.05), while the concentration of glucose was higher (p < 0.05) in 0.5 mg/Se-supplemented diet. On the other hand, alkaline phosphatase (ALP), alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were lower (p < 0.05) in 0.5 mg/Se-supplemented group compared to control or 1.0 mg/Se-supplemented groups. From this study, it was concluded that supplementation of 0.5 mg Se/kg diet was beneficial for foam variables, biochemical composition of foam, semen characteristics and fertility in male Japanese quail.
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