Mansoura University, Faculty of AgricultureJournal of Animal and Poultry Production2090-36425120140101EFFECT OF GREEN TEA AS DIETARY SUPPLEMENTS (Camellia sinensis) ON SEMEN QUALITY AND TESTOSTERONE PROFILE IN RABBITS.1136859910.21608/jappmu.2014.68599ENM. A.MSheteifaAnimal Production Research Institute, Agricultural Research Center, Dokki, Egypt.W. A.MorsyAnimal Production Research Institute, Agricultural Research Center, Dokki, Egypt.Journal Article20200120This study aimed to investigate effect of green tea level as a dietary additive on semen quality and testosterone concentration of adult APRI line rabbit bucks. A total of 12 adult bucks were allotted into 4 equal groups fed complete feed diet (17.4% CP and 2257 Kcal metabolizable energy on dry matter basis), without additive (T1) or supplemented with 2, 4 and 6 g green tea/kg diet (T2, T3 and T4 respectively). The experimental period was 13 weeks, 4 weeks as a preliminary period and 9 weeks as main period of semen collection. Semen was evaluated for volume (SV), pH value, and percentages of motility (SMP), livability (SLP) and abnormality (SAP) of spermatozoa as well as sperm cell concentration (SCC). Sperm count as total output (TSO) and total motile (TMO), total live (TLO) and total normal (TNO) was calculated. Testosterone concentration in blood plasma was determined pre-treatment, and mid and end of the collection period. Results showed that bucks in T4 treated with 6 g green tea/kg diet showed the highest (P<0.05) SV, pH value, SMP, SCC, TSO, TMO, TLO, TNO and the lowest (P<0.05) SAP. However, SLP and testosterone concentration were not affected by treatment.
In conclusion, green tea demonstrates significant improvement in the antioxidant status, as shown by the increased antioxidant enzyme activity and GSH levels. Green tea could serve as a supportive treatment in the nutritional management to improve semen quality of rabbit bucks, particularly at a level of 6 g/kg diet.
Keywords: Rabbit, green tea, semen, sperm output, testosterone.
This study aimed to investigate effect of green tea level as a dietary additive on semen quality and testosterone concentration of adult APRI line rabbit bucks. A total of 12 adult bucks were allotted into 4 equal groups fed complete feed diet (17.4% CP and 2257 Kcal metabolizable energy on dry matter basis), without additive (T1) or supplemented with 2, 4 and 6 g green tea/kg diet (T2, T3 and T4 respectively). The experimental period was 13 weeks, 4 weeks as a preliminary period and 9 weeks as main period of semen collection. Semen was evaluated for volume (SV), pH value, and percentages of motility (SMP), livability (SLP) and abnormality (SAP) of spermatozoa as well as sperm cell concentration (SCC). Sperm count as total output (TSO) and total motile (TMO), total live (TLO) and total normal (TNO) was calculated. Testosterone concentration in blood plasma was determined pre-treatment, and mid and end of the collection period. Results showed that bucks in T4 treated with 6 g green tea/kg diet showed the highest (P<0.05) SV, pH value, SMP, SCC, TSO, TMO, TLO, TNO and the lowest (P<0.05) SAP. However, SLP and testosterone concentration were not affected by treatment.
In conclusion, green tea demonstrates significant improvement in the antioxidant status, as shown by the increased antioxidant enzyme activity and GSH levels. Green tea could serve as a supportive treatment in the nutritional management to improve semen quality of rabbit bucks, particularly at a level of 6 g/kg diet.
Mansoura University, Faculty of AgricultureJournal of Animal and Poultry Production2090-36425120140101MILK PRODUCTION, SOME RUMEN PARAMETERS AND FEED UTILIZATION EFFICIENCY OF LACTATING GOATS FED RATIONS CONTAINING BERSEEM SILAGE AND THEIR MIXTURE WITH BARELY OR MILLET X NAPIER GRASS HYBRID.15256860010.21608/jappmu.2014.68600ENG. I.El-EmamAnimal Production Research Institute, Agricultural Research Center, Dokki, Giza, Egypt.M. R.M.SalehAnimal Production Research Institute, Agricultural Research Center, Dokki, Giza, Egypt.M. E.El-KholanyAnimal Production Research Institute, Agricultural Research Center, Dokki, Giza, Egypt.Hoda M.El-HosseinyAnimal Production Research Institute, Agricultural Research Center, Dokki, Giza, Egypt.S. B.MehanyAnimal Production Research Institute, Agricultural Research Center, Dokki, Giza, Egypt.Journal Article20200120The effect of using berseem silage and its mixtures with barely or millet x napier grass hybrid in diets of lactating goats on their performance for milk production and feed conversion efficiency was studied. Eighteen Zaraibi does with average body weight of 40.0 kg were divided randomly into three equal groups (6 in each group). All animals were fed concentrate feed mixture (CFM) to cover 40% of requirements recommended by <em>NRC </em>(1981). Besides <em>ad libitum</em> silage supplement, where berseem silage offered to group 1(G<sub>1</sub>), silage made of 50% berseem – 50% barley to group 2 (G<sub>2</sub>) and silage made of 50% berseem – 50% millet x Napier grass hybrid to group 3 G<sub>3</sub>. The feeding trails lasted 14 weeks. The obtained results showed that the crude protein (CP) and ash of berseem silage were higher (14.61 and 12.31%, respectively) than the other silages. But, the crude fiber (CF), ether extract (EE) and nitrogen free extract (NFE) were lower in berseem silage (28.84, 2.29 and 41.95%, respectively) compared with their mixtures with barely or millet x napier grass hybrid. The daily feed intake as g/h, %BW and g/h w<sup>0.75</sup> was increased with mixture silage (G<sub>2</sub> and G<sub>3</sub>) compared with berseem silage alone (G<sub>1</sub>). The effect of the experimental rations on daily water consumption was not noticeable.
As for ruminal parameters, ammonia-N concentration was significantly (P< 0.05) higher with berseem silage (G<sub>1</sub>) compared with G<sub>2</sub> and G<sub>3</sub>. But, ruminal total VFA's concentrations and microbial protein were significantly (P< 0.05) lower with G<sub>1</sub> compared with G<sub>2</sub> and G<sub>3</sub> during 2 and 4 hrs post-feeding. The effect of the tested rations on most blood parameters was not significant (P< 0.05).
As for milk production, the obtained data showed that milk yield of dairy goats was significantly (P< 0.05) decreased with G<sub>1</sub> (1.339 kg/h/d) compared with G<sub>2</sub> (1.601 kg/h/d) and G<sub>3</sub> (1.550 kg/h/d). Milk composition as fat, protein, lactose, total solids, solids non fat and ash for the three treatments were fluctuated without significances. Accordingly, the feed conversion efficiency based on DM and CP, was better with G<sub>2</sub> (0.901 and 0.125, respectively) and G<sub>3</sub> (0.911 and 0.123, respectively) compared with berseem silage alone, G<sub>1</sub>(1.01 and 0.145, respectively).