ON$ET OF PUBERTY, SEMEN PRODUCTION AND BLOOD CONSTITUENTS IN CROSSBRED MALE LAMBS AS AFFECTED BY DIETARY YEAST CULTURE ADDITION | ||||
| Journal of Animal and Poultry Production | ||||
| Article 15, Volume 27, Issue 7, July 2002, Page 4589-4598 PDF (1.31 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jappmu.2002.255892 | ||||
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| Author | ||||
| I. S. El-Shamaa, | ||||
| Dept. Anlm. Prod., Fac. Agric. Kafr EI-Shelkh, Tanta Univ. | ||||
| Abstract | ||||
| Twenty-one crossbred ram lambs (1/2 Romanove x 1/2 Rahmani) at four months of age and 21.2 kg live body weight were assigned to equal three groups to study the effect of yeast culture supplementation on growth rate. onset of puberty (first ejaculation with motile spermatozoa), pest-puberta' semen characteristics and semen storabiJity at 5°C and some blood constituents. The experimental lambs were fed as follows: the first and second group (G, and G2) were given basal ration supplemented with yeast culture (YC) at a rate of 0.05 and 0.025% of live body weight, respectively. while the third group (GJ) was fed the basal ration only. Blood samples were taken and body weight was recorded every 15 days interval throughout the experimental period (6 months). The results of this study cleared that supplemented YC to G, and G2 Significantly Increased body weight and daily gain compared with the control (G3). Also. G, and G2 reached puberty 27 and 22.5 days earlier and markedly heavier compared with G3. The percentages of motile and live spermatozoa and sperm cell concentration were greater in G, and ~ but lower values of sperm abnormalities than in G3. The survival rate of spermatozoa were 55.4, 55.5 and 37.5% for G" G2 and G3, respectively. Blood RBCs and Hb value were higher in G, and G2 but lower in WBCs than in G3. The addition of YC had slightly effect on serum total protein, albumin and globulin. On the other hand, GOT and GPT concentration were higher in control than YC-treated animals but differences were not significant. The superior effect of YC may be due to its improving effect on both puberty and blood parameters. | ||||
| Keywords | ||||
| Ram lambs; yeast culture; puberty; semen; blood parameters | ||||
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