Animal Production Resources
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This publication contains an Excel spreadsheet to help researchers determine the correct poultry population size for their experiments.
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Prevalence of mastitis in unbred, breeding-age and pregnant dairy heifers is higher than formerly realized. Infected
mammary quarters, especially those with Staph. aureus IMI, exhibit reduced mammary gland secretory
potential, marked leukocyte infiltration and the accompanying inflammation. Both nonlactating and lactating
commercial antibiotic infusion products have been used successfully to cure existing infections and reduce SCC,
and nonlactating therapy prevents new IMI with environmental streptococci. However, the goal is to prevent
new infections from occurring in these young dairy animals through management strategies aimed at vaccination,
use of teat seals, fly control and dietary supplementation. As global milk quality standards
become more stringent, management practices based on curing existing infections and preventing new IMI
in heifers will ensure that these young dairy animals enter the milking herd free of mastitis and with low SCC.
Such practices should be considered for incorporation into dairy herd health programs in herds suffering from a
high prevalence of heifer mastitis, especially mastitis caused by Staph. aureus. Not only do these practices reduce
new infections in first-calf heifers at parturition, they also reduce the introduction of Staph. aureus to the milking
herd.|
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The main objective in brooding chicks is to efficiently and economically provide a comfortable, healthy environment for growing birds. Temperature, air quality, humidity and light are critical factors to consider. Failure to provide the adequate environment during the brooding period will reduce profitability, resulting in reduced growth and development, poorer feed conversion, and increased disease, condemnation and mortality.
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Aflatoxin is formed in stressed plants by the mold Aspergillius flavus. The mycotoxin is produced by an actively growing mold. The mold can be present without mycotoxin formation or the mycotoxin may be present without the mold. The formation of the mycotoxin can occur during storage if the feed is not kept dry. Aflatoxin can be found in many grains and forages but is most commonly found in corn, cottonseed, and peanuts. Recent data indicates the above levels may not be safe for periods of prolonged feeding.
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Whole cottonseed is an excellent feed for dairy cattle due to its high level of fiber, protein and energy (fat) in a compact package. It can be fed just as it comes from the gin without processing or may be pelleted before feeding. Whole cottonseed can also be used to stretch limited forage supply. Dairymen should capitalize on this situation as much as possible. Some limiting factors to consider when feeding whole cottonseed are gossypol, high fat content, and the potential for aflatoxin.
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B 1203
Dairy Genetic Benchmarks
This publication provides genetic benchmarks for Holstein herds processed by Dairy Records Management Systems. Examples for using and applying benchmark values are provided; however, this publication should be viewed primarily as a comprehensive resource of genetic benchmark values. These values will be useful to dairy producers, dairy managers, consultants, veterinarians and agribusiness representatives as a first step in the evaluation of the genetic program of a herd.
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The Dairy Business Analysis Project was initiated in 1996 to measure and document the financial performance of Florida dairy businesses using standardized accounting measures, so uniform comparisons could be made among participants. Formal collaboration between the Universities of Florida and Georgia began in 1998. This publication presents the results from fiscal year 1999 information.
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This publication provides information on (1) the nutrient content of manures available for land application, (2) how to determine manure application rates and whether supplemental fertilizer will be needed for maximum crop production and (3) how to use management techniques to maximize the fertilization potential of farm manures.
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