Browsing by Subject "Reproduction"
Now showing items 1-20 of 83
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(AgriLife Extension, Texas A&M University System; Texas A&M University. Libraries, )
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(Texas A&M University. Libraries, 1987)Field studies were conducted on the solitary ground nesting bee species, Agapostemon angelicus Cockerell (Hymenoptera: Halictidae), a pollinator of potential value in hybrid cotton production programs on the Texas High ...
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(AgriLife Extension, Texas A&M University System; Texas A&M University. Libraries, )
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(AgriLife Extension, Texas A&M University System; Texas A&M University. Libraries, )Beef heifers experience calving difficulty, or dystocia, more frequently than do mature cows. Dystocia is characterized by prolonged or difficult labor due to heavy birthweight and/or small pelvic area of the dam. Death ...
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(Texas A&M University. Libraries, 2001)I investigated factors influencing diversity ami abundance of wintering raptor assemblages in southern Texas. I approached this problem from several spatial and temporal scales, ranging from continental to patch, and 30 ...
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(Texas A&M University. Libraries, 1980)This study collected data on mourning doves on the Texas A&M University campus, College Station, Texas from 1978 through 1979. During this study 2,258 doves were banded and 1,620 were recaptured for a total of 3,878 ...
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(AgriLife Extension, Texas A&M University System; Texas A&M University. Libraries, )The importance of the bull in a cattle breeding program often is underestimated. A cow is responsible for half the genetic material in only one calf each year, while the bull is responsible for half the genetic material ...
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(AgriLife Extension, Texas A&M University System; Texas A&M University. Libraries, )It is often said that a bull contributes half the production in a calf crop. This may be true for an average bull, but probably exaggerates contributions from a poor quality bull and dramatically underestimates those from ...
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(AgriLife Extension, Texas A&M University System; Texas A&M University. Libraries, )Cows that are slow to breed or fail to breed are costly and reduce herd productivity and profitability. Many factors affect a cow's ability to breed after calving. Assuming that reproductive diseases are not prevalent in ...
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(Department of Animal Science, Texas A&M University; Texas A&M University. Libraries, )
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(AgriLife Extension, Texas A&M University System; Texas A&M University. Libraries, )As any cattleman knows, the time of year when cows calve directly affects many herd management practices: • The start of calving is dictated by the start of breeding. • Cows calving in the fall normally need more ...
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(Texas A&M University. Libraries, 1986)A series of experiments was conducted to develop a procedure for consistent, repeatable collection of oocytes from the pre-ovulatory follicle of the mare. Experiment 1 resulted in the collection of 26 oocytes from 30 equine ...
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(Texas A&M University. Libraries, 1986)Histological structures of placentomes and cotyledons were studied in eight antelope species (Uganda kob, common duiker, common eland, greater kudu, wildebeest, sable antelope, steenbok, impala) and domestic cattle. A few ...
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(Texas A&M University. Libraries, 1984)Twelve plants were chosen from the progeny of a newly-acquired African accession of buffelgrass (accession 409674) for use as parents in a cytological study to characterize mode of reproduction. Using a cleared-carpel ...
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(AgriLife Extension, Texas A&M University System; Texas A&M University. Libraries, )Determining pregnancy in cattle is an important management practice. The ability to determine pregnancy can allow you to make timely culling decisions and focus the resources of your operation on sound, reliable breeders. ...
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(2018-08-03)This study was conducted to test the hypothesis that dietary supplementation with 0.4% L-arginine between days 14 and 30 of gestation would enhance survival and development of conceptuses (embryo and its extra-embryonic ...
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(2019-04-18)Olive ridley sea turtles (Lepidochelys olivacea) are a vulnerable species. During their reproductive season these turtles migrate great distances to mate and lay eggs. Poor nutrition before this migration can result in ...
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(Texas A&M University. Libraries, 1986)I examined the ecology and breeding biology of a population of white-tailed hawks (Buteo albicaudatus hypospodius; 6 pairs, 1983, 1984; 7 pairs 1985) at the Attwater Prairie Chicken National Wildlife Refuge in Colorado ...
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(Texas A&M University, 2004-09-30)The objectives of this study were to determine the effects of gossypol ingestion on reproductive function and productivity of female fallow deer (Dama dama) by measuring endocrine function, pregnancy rates, and body weights ...
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(Texas A&M University. Libraries, 1986)A total of 46 pregnant, 2 yr old, crossbred heifers were used in a study to determine the impact of nutrient restriction during gestation on changes in live weight, empty body (EB) weight, EB protein and EB fat. Large ...