What causes variation in cattle?

What causes variation in cattle?

The genetic group of animal, season of calving, parity of animal, and birth weight of calf were found to be significant sources of variation in the GL of the Jersey crossbred cattle, whereas the period of calving and sex of calf did not affect this trait.

What are the different groups of cattle found on a dairy?

Dairy cows are bred for their ability to produce milk from which dairy foods are made. In the U.S., there are seven different dairy cow breeds: Holstein, Jersey, Brown Swiss, Guernsey, Ayrshire, Milking Shorthorn and Red and White Holstein.

What are the problems that dairy industry facing now?

The main challenges that the sector faces are water scarcity, poor mechanization, low reproductive efficiency, low forage production and lack of records that would help track the evolution of the dairy farms’ production.

What are examples of selective breeding?

Selective breeding

• cows that produce lots of milk.
• chickens that produce large eggs.
• wheat plants that produce lots of grain.

What is the most important trait of a dairy cow Why?

Udder Cleft Udder depth is the most important physical trait of the udder. It is evaluated as the relationship of the udder floor relative to the hocks. Higher udders are related with less mastitis, less udder injury, and greater longevity. When evaluating udder depth, the age of the cow needs to be taken into account.

What are three factors that influence breed selection?

These three factors are: accuracy of the phenotypic evaluation(s) or the performance records in predicting the animal’s true breeding value or genotype (A), intensity or degree of selection based on the phenotypic evaluations practiced on animals (I), and.

How are cattle grouped?

Farmers can group their cows in nutritional groups and/or management groups. In nutritional groups, cows in each group are fed a separate ration. This type of grouping can be beneficial when trying to meet nutrient requirements of cows in different stages of lactation.

What are the parts of a dairy animal?

Dairy Cattle Discovery- Parts

• Muzzle.
• Poll.
• Back.
• Ribs.
• Hip.
• Pin Bone.
• Hock.
• Pastern.

What challenges face the development of the dairy industry in Kenya?

With 90% of the nation’s milk production coming from small scale dairy farmers, the dairy industry in Kenya is faced with various challenges: High cost of milk production. High cost of collection per unit of milk. Poor management of dairy marketing systems.

Why dairy production is not progressive in Philippines?

The average Philippine milk production per animal (8 liters/day) remains low mainly due to poor feed and management practices, compounded with high production costs and a lack of adequate dairy infrastructure.