Showing papers in "The Professional Animal Scientist in 1995"

TL;DR: Data suggest that Zn Met at the concentration fed increased serum growth hormone, prolactin, and triiodothyronine after feeding, as indicated by increased alkaline phosphatase activitye.

TL;DR: In this article, the effects of dietary Zn source and level and supplemental Cu Lys on performance and health during receiving and growing and finishing periods of newly weaned beef steers were evaluated.

TL;DR: Forage quality is influenced by the environment in which forages are grown and by soil fertility and these cause year-to-year, seasonal, and geographical variation in forage quality even when herbage is harvested at the same stage of maturity.

TL;DR: Results suggest that ensiling whole-plant corn in this region should commence at the one-half milk line stage of maturity, and Harvest should occur prior to physiological maturity due to the risk of field losses and the potential for increased storage losses when whole plant is stored above 45% DM in bunker silos.

TL;DR: Although .3 ppm dietary Se appears to more fully satisfy the dietary need for Se in most animals than .1 ppm, more scientific data are needed to support the higher level.

TL;DR: Considering the relative magnitude of changes in yield and quality with advancing maturity, one should delay harvesting soybeans for silage until the R6 growth stage, if possible.

TL;DR: The grazing season for bermudagrass pastures can be lengthened by fall interseeding of rye by measuring forage intake and nutritional components from the two types of rye pastures.

TL;DR: The effect of copper, orally administered via slow-releasing boluses, was examined in two Kansas beef herds, finding unexplained reductions in fertility coupled with the high prevalence of copper deficiency in this region made this herd a likely candidate for this study.

TL;DR: High dietary levels of stacked or composted litter for growing ruminants with high energy requirements may restrict performance primarily as a result of low digestibility of litter.

TL;DR: The equine athlete undergoes significant musculo-skeletal changes during conditioning and competition, and both ground surfaces and exercise schedules impact the length of time needed to prepare for the rigors of competition.

TL;DR: Twenty early lactating dairy cattle were used in a lactation study to compare responses to five total mixed ration diets containing various combinations of protein supplements (DM basis) and dry matter intake was depressed.

TL;DR: In this paper, 60 spring-born beef heifers were fed 2.27 kg/d of a soybean meal-based 25% CP supplement while grazing dormant native range in winter (November to April).

TL;DR: This review evaluates by-product feeds that have been found to be effective as forage fiber substitutes but also have value as energy sources in ruminant diets and their impact on animal performance.

TL;DR: Pelvic area prebreeding did not differ by deworming treatment, but was larger in heifers implanted at 2 mo of age (P < .01), and precalving pelvic area also was larger for heifer treated with Synovex-C®(P< .05).

TL;DR: Delaying ensiling of whole-plant soybeans until the R6 growth stage some-what compromises digestibility of the forage but provides a silage of higher acceptance by sheep.

TL;DR: In this article, the authors looked at the manure handling systems of 1.5% of Colorado horse ranches, and estimated the possible methane production from horse manure, and examined the potential for pollution as an effect of the horse manure handling practices.

TL;DR: Optimum days open to maximize IOFC for calving season 4 was 15 d higher for above average production level than for below average and average levels and the 305-d milk yield was not different for the four seasons of calving.

TL;DR: Replacing a portion of the soybean meal protein with fish meal protein improved weight gain and ruminal characteristics, and blood metabolites in weanling calves.

TL;DR: It is suggested that plant species growing in unmanaged communities can contribute macrom Minerals (particularly Mg and Ca) and microminerals (Cu) in sufficient amounts to negate or reduce the incidence of hypomagnesemia and other metabolic diseases.

TL;DR: This analysis evaluates the economic effect of using Synovex-C implants in the development of replacement heifers as compared to no implants and addresses the value of increased gain and weight vs the value or opportunity cost due to reduced reproductive efficiency.

TL;DR: In this paper, the authors discuss the important environmental issues that impact livestock production, including global warming, tropical deforestation, water-use issues, rangelands and desertification, and livestock-wildlife interactions.

TL;DR: The appropriateness of patenting animals and animal parts such as altered DNA sequences or DNA-based tests have been established by U.S. courts and agencies as discussed by the authors, and some refinement of intellectual property rights procedures is needed.

TL;DR: In this paper, a randomized complete block experiment was conducted to determine the impact of feeder space allocation on growing-finishing pig performance from 40.8 to 98.4 kg.

TL;DR: Thirty varieties in 1990 and 34 varieties in 1991 were evaluated for yield potential and nitrate accumulation, and Varieties within forage type were not different (P > .9) from each other.

TL;DR: Performance data were collected from 543 purebred boars that were grown to an average body weight of 144 kg and there were significant changes in animal weight, daily gain, and backfat measures.

TL;DR: In this article, the six treatment diets used in Exp. 1 were: corn-soybean meal (C-SBM), corn-raw soybeans (CRSB), 1:1 corn:wheat and SBM (SBM); 4) CWSBM to 59 kg, CW-RSB from 59 to 105 kg; 5) wheat SBM, WSBM; 6) CW-WBM, SBM; 7) CWWBM; and 8) WRSB.

TL;DR: Early measures (on-test or at 29 d) made significant contributions to the prediction of final performance (BW, BF, and feed conversion) although the prediction for final ADG was particularly poor.

TL;DR: Initial variables evaluated in this study are of limited value in predicting feeder calf value under dynamic market conditions.

TL;DR: Injecting yearling beef heifers with 400 μg of EB 40 h after PG injection in an MGA/PG estrous synchronization system failed to improve further reproductive performance, and Estradiol benzoate had no effect on the percentage of heifer showing estrus, first-service AI conception rate, overall AI conception rates, cumulative pregnancy rate or average calving date.

TL;DR: In this paper, the authors compared three plant species (Fescue, barley, and black mustard) with two rates of manure from Se-supplemented (S) and unsupplementing control (C) cattle were compared.