Indian Journal of Animal Research

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Research Article

Indian Journal of Animal Research, volume 53 issue 6 (june 2019) : 720-723

Evaluation of milk urea concentrations and their relationship with milk production, rumen degradable proteins imbalance, and cow’s fertility in a dairy farm in Haouz, central Morocco

N. Munyaneza, Y. EI Hachimi
1Cadi Ayyad University, Faculty of Sciences and Technology, Department of Biology, 112Bd. Abdelkrim Al Khattabi, 549,40000, Marrakech, Morocco.
Cite article:- Munyaneza N., Hachimi EI Y. (2019). Evaluation of milk urea concentrations and their relationship with milk production, rumen degradable proteins imbalance, and cow’s fertility in a dairy farm in Haouz, central Morocco. Indian Journal of Animal Research. 53(6): 720-723. doi: 10.18805/ijar.B-939.

ABSTRACT

The effect of some factors on relationships between milk urea concentrations, milk production, negative OEB diet and fertility of 74 cows were analyzed. Diets were calculated using the French PDI system and SPSS 20 package was used for statistical analysis. Milk urea concentrations ranged from 31.7± 1.6 mg/dl   in low-producing cows (17.3 ± 2.3 kg milk) to 32.3 ±2.0 mg/dl in high-producing cows (25.1 ± 4.4 kg milk). The increase of milk urea concentrations was found to increase interval between calving and conception (p< 0.00), number of inseminations per conception (p <0.01) and interval between two successive calvings (p<0.00). Increasing of urea in milk in relation with feeding diets characterized by negative OEB   might decrease milk production and fertility in dairy herd. Therefore, dairy breeders may find it advantageous to monitor milk urea, which could help to improve nutritional status and cow’s fertility.

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