In the fl uke- infected heifers, the estrogen- progesterone ratio was messed up, interfering with heat cycles.
One person, trained in human parasitology, mentioned a human fl uke that in other parts of the world can af- fect normal development of the gonads, especially if it infects young boys.” Hawkins also found a study in Spain where a the-
riogenologist had experimentally infected dairy heifers with liver fl ukes. “He had an uninfected control group and monitored
everything, including conception. He found that fl ukes impacted the estrogen-progesterone ratio in the heifers. Their estrogen was too high. You would tend to worry about estrogen being too low, but what happened was the progesterone was lower than normal and estrogen was higher than normal. In his study, the fl uke-infected heifers were 39 days late, on average, coming into their fi rst standing estrus, and their conception rate was also statistically lower.” The ratio of estrogen and progesterone is important
for conception, rather than the actual levels, except there has to be a certain level of progesterone or preg- nancy won’t be maintained after the animal conceives. “In the fl uke-infected heifers, the ratio was messed
up, interfering with heat cycles. This researcher felt that the low progesterone could cause the animals that did
Before the Chisholm and Goodnight-Loving Trails, Wortham - San Antonio
was insuring Texas ranchers and cattlemen.
Wortham - San Antonio puts our 150 years of experience behind every policy we write, every acre we insure, and the stock we protect:
• Property and equipment loss or damage • General liability (includes oil & gas and hunting operations on property)
• Business automobiles • Workers’ compensation
• Umbrella/excess liability • Professional liability • Animal mortality • And all your personal insurance needs
For a professional assessment of your insurance needs, please call Burton Barnes, Jr. at (210) 223-9171 or 1-800-779-4677 or visit us online at
www.worthaminsurance.com.
“Since 1852 Wortham - San Antonio has been protecting the interests of cattlemen across Texas and the Southwest. TSCRA proudly provides its endorsement of Wortham - San Antonio as a valued and trusted partner.” Eldon White, Executive Vice President, TSCRA.
WORTHAM - SAN ANTONIO 131 Interpark Blvd. San Antonio, Texas 78216
74 The Cattleman April 2014
thecattlemanmagazine.com
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108