Herd Health |
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abomasum abortion acid acute affected animals anionic salts antibiotics bacteria become infected bloat blood body bovine breeding brucellosis bull calcium calf calves cattle cause cells cervix chronic clean colostrum common condition contain corpus luteum cow's cycle cysts dairy dairymen death dehorning develop diagnosis diarrhea disease drugs dry cows dry period estrous cycle estrus feces feed fetus follicle foot rot grain heat heifers herd hoof hormone horn inflammation injury Johne's Johne's disease ketosis lactation legs lesions levels liver lung mals mastitis membranes ment milk fever months mycotoxins nitrate normal occur organisms ovaries pasture percent placenta pneumonia poisoning prevent problems produce progesterone prolapse ration reduce removed respiratory rumen scours signs skin spread swelling symptoms teat teat end temperature tion tissue tive toxin tract treat treatment trimming ture udder urine usually uterine uterus vaccination vaginal veterinarian viral virus vulva
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Page 34 - ABNORMAL BIRTH POSITIONS CALF UPSIDE DOWN. A veterinarian will usually turn the calf. Occasionally, such a calf must be delivered backward. HEAD BENT BACK. If the veterinarian can push the calf back into the cow, he often can bring the head into position. FORELEG RETAINED. In this presentation, the retained leg must be brought forward joint by joint so the calf can be delivered.
Page 34 - ... Occasionally, such a calf must be delivered backward. Head bent back. If the veterinarian can push the calf back into the cow he often can bring the head into position. Foreleg retained. In this presentation, the leg must be brought forward, joint by joint, so the calf can be delivered. Backward and upside down. The calf must be turned in the uterus until it assumes the normal birth position. Calf backward. Veterinarians try to straighten hindlegs of calf in this position, then deliver calf backward....
Page 21 - This is relayed to the hypothalamus which in turn relays to the pituitary gland, located at the base of the brain, and the adrenal glands, causing a narrowing of the arteries which, in turn, results in hypertension.
Page 39 - ... intelligent control of a given case, one must have a wide experience in the field of cancer, probably more than in...
Page 25 - CL in animals that have a CL present. The progesterone implant prevents the development of a new CL in these animals and in animals that did not have a CL present when the estrogen injection was given. The implant is removed 9 days after insertion. Once the implant is removed, new cycles commence and animals express heat approximately 24 to 36 hours after implant removal. Another synchronization program involves injection of prostaglandin F2-aIpho.
Page 65 - Excellent care at calving is critical. If excessively fat cows can get through the calving period without complications, they may be able to adjust to the mobilization of large amounts of fat. But they still are more susceptible to problems and are less likely to get off to a good start. In many herds, it may be most economical to cull extremely fat cows before they calve.
Page 65 - So she pulls the fatty acids from her body fat stores. The cow uses fatty acids for milk fat synthesis, but her liver takes in a majority. The more fatty acids are mobilized, the more the liver absorbs. From these fatty acids, the liver manufactures another fat called triglyceride. Ideally, the cow should take up the triglycerides for milk fat synthesis, but in ruminants, this is unfortunately an inefficient process.
Page 65 - Fatty liver develops because the liver manufactures triglycerides faster than triglycerides move to the udder. Once triglycerides accumulate in the liver, it is very difficult for them to be removed. These triglycerides then interfere with important liver cell activities such as producing immune cells, neutralizing toxins absorbed from the intestinal tract, and creating blood sugar from other compounds.
Page 65 - Work with a nutritionist so you can avoid modifying a cow's body condition during her dry period. If a cow does enter the dry period with too much body condition, it is especially important that the far-off and close-up dry cow rations be very well formulated.
Page 65 - The condition is characterized by depression, lack of appetite, suppressed immune system to combat infections and general weakness. It is referred to as a syndrome because it almost always is associated with other problems at calving, such as milk fever, displaced abomasum, retained placenta, metritis or mastitis.