. Productive agriculture . orth asmuch per pound for human food as ordinary sugar. Five Essential Points of a Good Dairy Cow. — In order thatthe value of a dairy cow may be rightly judged, tht amount ofher feed should be known, her milk should be weighed and testedfor butter fat. It is not always possible to decide upon thesepoints, so we must know what characteristics to look for in acow which shows milk-producing capacity. There are five pointsthat are essential to a good dairy cow. These are : 1. A good constitution. 2. Capacity for food. 3. Proper temperament. 4. Good blood circulation. 5.
. Productive agriculture . orth asmuch per pound for human food as ordinary sugar. Five Essential Points of a Good Dairy Cow. — In order thatthe value of a dairy cow may be rightly judged, tht amount ofher feed should be known, her milk should be weighed and testedfor butter fat. It is not always possible to decide upon thesepoints, so we must know what characteristics to look for in acow which shows milk-producing capacity. There are five pointsthat are essential to a good dairy cow. These are : 1. A good constitution. 2. Capacity for food. 3. Proper temperament. 4. Good blood circulation. 5. Milk-producing ability. 166 PRODUCTIVE AGRICULTURE I. Constitution is indicated by a strong, large girth, broadhead, box-shaped muzzle, and large, well-distended nostrils. Athin-chested, narrow, long-headed animal has not a good con-stitution ; an animal that has very small nostrils cannot takein large volumes of air, which is essential to a long Ufe. Theaverage economic productive period of a dairy cow is 6 to 7 Courtisy oj Ihe AgrkuUural Extension Deparlmml, Ptirim 72. — Wedge shape as seen from the side. An extraordinary milk yield for one or two years is not cow with a good constitution will be valuable from 2 to 5 yearslonger than a cow with a poor constitution. 2. If a cow is to be profitable, she must have a large capacityfor food. Capacity for food is indicated by a large barrel anda long body. A cow with a short body and a small stomachgirth measure cannot consume large quantities of food or produce DAIRYING 167 much milk. A cow measuring 34 inches from withers to hips,74 inches around the heart girth, and 88 inches around thebarrel, has one and one-half times the capacity that a cow hasthat measures 30, 65, and 75 inches, respectively, in the samepoints. Short-ribbed, slab-sided, short-bodied cows can con-sume only small amounts offeed, and therefore canproduce only small amountsof milk. 3. Dairy temperament isessential to a goo
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