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STUDYING THE EFFECT OF SOME NON-GENETIC FACTORS ON DAILY MILK YIELD OF IRAQI BUFFALO | ||
| IRAQ JOURNAL OF AGRICULTURE | ||
| Article 1, Volume 14, Issue 1, 2009, Pages 0-0 | ||
| Authors | ||
| S. M. Idrees; J. K. Al-Saaidy; S. F. Abbas; S. L. Hameed; J. M. Zuayer; I. Q. Mustafa | ||
| Abstract | ||
| This study was conducted in Futhaliya village, Baghdad province, during the summer and winter seasons, 2007 to study the influence of herd size, age at first calving, days open and season on daily milk yield of Iraqi buffaloes. Two hundreds buffalo owners owned 4-250 heads of different ages were randomly selected. The overall herd size ,milking herd size, age at first calving, days open ,as well as daily milk yield were recorded during winter and summer seasons . The overall and milking herds were divided into 6 groups according to their own size. Higher (p<0.01) daily milk yield was found in medium –sized herds (20-40 heads) as compared with small–sized herds (1-10 heads ), the average was ranged from 6.22 ±1.53 to 6.25± 1.01 kg. Daily milk yield was significantly (p<0.001) greater during winter (6.42 ± 2.06 kg) than summer (5.62 ± 1.61kg). The regression coefficient of daily milk yield was significantly higher (p<0.01) on age at first calving, whereas it lacked significance on days open. In conclusion, the medium–sized herds in this location were superior in daily milk yield as compared with small-sized herds during winter than summer seasons. The age at first calving had a significant effect on daily milk yield. | ||
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