Studying the Rationing of Concentrated Grazing Feed in Awassi ewes’ Milk Production
摘要
The experiment was carried out in one of the fields of local sheep breeders in the northeast of Mosul, Tal-Kayf district, where 12 Awassi ewes aged between 3–4 years were divided into two groups. The animals were placed in two semi-open barns with cement walls and earthen floors and equipped with feeders. The first group was fed with concentrated pellets at 1.5 kg/head, and the second group was fed with the same pellets at 1 kg/head in addition to going out to graze on green pastures. The results indicated that there was a significant increase (P ≤ 0.05) in the amount of milk produced in the second two weeks in favour of the second group that was out grazing, outperforming the first in the amount of milk (218.75 and 483.33 g/day). The average daily milk yield was significantly (P ≤ 0.05) higher in the second group than the first, with 240.68 and 320.83 g/day, respectively. There were no significant differences in the percentage of milk components. As for blood tests, the results indicated that there was a significant increase (P ≤ 0.05) in the blood glucose concentration in favour of the second group at the end of the experiment compared to the first, reaching (40.82 and 49.59) mg/100 ml blood, while the total and total blood protein concentrations decreased significantly (P ≤ 0.05). (P ≤ 0.05) the concentration of total blood protein and calcium at the end of the experiment in the second group compared to the first group, reached (7.93, 7.46) g/100 ml blood and (11.23, 11.14) mg/100 ml blood, respectively, while the rest of the blood components did not differ significantly (P ≤ 0.05).