A COMPARATIVE STUDY OF THE PRODUCTIVE PERFORMANCE BETWEEN HOLSTEIN FRIESIAN AND SIMMENTAL COWS IN THE FIRST PRODUCTION SEASON, WHICH RAISED AT TAJ ALNAHRAIN STATION IN AL-QADISIYAH GOVERNORATE
Keywords:
Simmental in Iraq, Holstein, the amount of fatAbstract
This research was conducted in the Iraqi province of Al-Qadisiyah, in the Al-Diwaniyah District and in the Taj Al-Nahrain Dairy Cow Breeding Station between August 1, 2023 and June 1, 2024 in order to assess the productive capabilities of Holstein Friesians and Simmental in the first season of milk production. In this research, 26 dairy cows were employed at the start of their lactation and during their first season of production, 15 Holstein Friesian cows and 11 Simmental cows were employed. The results demonstrated a significant influence (P
<0.05) of the breed on both daily and total milk production, Holstein Friesian cows were significantly more productive than Simmental cows (P><0.05) in both daily and total milk production, their averages were (1.12±0.15, 506.45±0.67650) kg, (1.8±0.10, 90±3474) kg, respectively. Simmental cows were significantly more superior (P><0.05) than Holstein cows in the percentage of total solids in milk and the percentage of fat in milk, while Holstein cows were significantly more superior (P><0.05) than Simmental cows in the percentage of water in milk, the average of these values was (0.09±12.5, 0.03±4.11, 0.09±87.43) (0.01±11.44, 0.09±3.17, and 0.01±88.55) respectively. No significant differences (P><0.05) existed between the two species in the percentage of protein, lactose, ash, percentage of solids not containing fat and milk density. The results demonstrated a significant advantage for Holstein cows (P><0.05) in terms of fat and protein in milk over the course of the trial, compared to Simmental cows, the averages were (16.887±215, 16.507±206.986) kg (13.555±142.865, 10.221±108.83) kg, respectively. Also, Simmental cows had a significantly higher (P><0.05) caloric value than Holstein cows (1 kg of milk), the averages were (0.038±285.322) kilocalories, (0.050±284.322) kilocalories, and (0.006) kilocalories, respectively>
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