p. 1−10
2382-994X
Vol.12/No.2
p. 11−20
2382-994X
Vol.12/No.2
p. 21−28
2382-994X
Vol.12/No.2
7 years) were measured. Results indicated that there was not significantly different between sexes and age groups for all of fleece parameters, expect staple length of hump was effect by sex and also rump staple length and scoured yield were effect by age groups (P< 0.05). The means of shoulder, flank, rump, hump and overall four spots staple lengths were 4 (± 1.6), 2.6 (± 1.2), 2.6 (± 1.4), 4.4 (± 1.9) and 3.5 (± 0.13) cm. The means of inner coat, fiber diameter and coefficient of variation of fiber diameter, and scoured yield were 82 (± 1.07)%, 36.7 (± 1) micron, 38.8 (± 0.9)% and 74.3 (± 0.09)% res. The ranges varied of these characters were from 58.3 to 94%, 16.8 to 39.2 micron, 26.1 to 61% and 61.2 to 84.5%, respectively.]]>
p. 29−36
2382-994X
Vol.12/No.2
0.05). There was no significant difference between slowly degradable fractions (b) and degradation rates (c, %h) in various treatments of barley straw. The degradability parameters of different rations also studied. The differences between readily (a) and slowly (b) degradable fractions were not significant. In the second experiment the effect of partial replacement of alfalfa hay with unsoaked barley straw and 24h soaked barley straw on performance of 9 multiparous lactating dairy cows in midlactation (580.9 ± 39.3 BW) with 27.8 ± 4.5 kg daily milk yield was studied in a crossover design. The effects of different treatments on milk yield (p< 0.05), milk fat (g/kg yield) (p< 0.05), N-NH3 rumen liquor (p< 0.0001), rumination and chewing activity (min/d) were significant. The rumination and chewing activity (min/d) were increased in diets that contained barley straw. In conclusion utilization of soaked barley straw in ration of midlactation cows is recommended.]]>
p. 37−50
2382-994X
Vol.12/No.2
p. 51−59
2382-994X
Vol.12/No.2
p. 61−67
2382-994X
Vol.12/No.2