Study of parents influence on some productive features of Friesian cows

• Main Authors: Abd Alilah Al-Zubaidi, Mahmood Alrashed, Osama Abdel Aziz
• Format: Article
• Language: Arabic
• Published: College of Education for Pure Sciences 2005-06-01
• Series: مجلة التربية والعلم
• Subjects: friesian cows; heifers
• Online Access: https://edusj.mosuljournals.com/article_81118_11e363e98cbe13c6954eaff6246cd6dd.pdf
• ISSN: 1812-125X; 2664-2530

From analysis of Records of the Daughters Sires (Bandy . Thamer, 51, Bulbl, Gorge , Anber ,Roger , 71753 and 251) that are used in artificial in semination to the Friesian cows belong to AL - Latifia Company for animal to study the effect of the Sires on the Heifers Birth weight, total milk yield production , Daily milk yield ,first and second three month of milk production to study the persistency of milk production .<br /> The Sires were significantly effect (P <0.05) on heifers Birth weight where the heights birth weight (40.88 + 1,46) kg for the daughters of the bull (51) .while the lowest birth weight was (35.06 ± 1.29 ) kg for the daughters of bull (Anber).<br /> While the sires were significantly effected ( P < 0.05) on total milk yield was for the daughters bull Bulbi.il. ( 3291.67 ± 1004.76) kg with increase (542.63) kg of total milk yield of the average mean value while the persistency was decrease as compared with other bulls , but the milk yield of the first three months of its daughters was increased and the lowest total milk yield of the daughters of Bandy ( 1919.70 ±445.87) kg while the persistency was significantly effected ( P < 0.05 ) with the sires , the average mean of persistency (73.35 % + 4.86 % ). the lowest persistency for the daughters of the bull Thamer ( 79,46 % ±,6.5% ). Although the daughters of the bull ( Gorge ,51 , Anber showed increasently of the averaee mean of the cattle .<br /><br />