Browsing by Subject "Juniperus pinchotii"
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Item Economic evaluation of redberry juniper control in the Texas rolling plains(Texas Tech University, 1996-05) Gerbolini, Alfonso JavierTexas rangelands are an important resource to the Texas economy because they constitute a large portion of the state's total territory. Texas' total surface area amounts to 69.1 million ha. with rangeland constituting 38.5 million ha., or 61% of the area (Texas Soil and Water Conservation Board, 1991). This area has the capacity to sustain livestock and wildlife. In 1994, Texas rangelands supported 5.8 million beef cows, which produced about 4.4 million feeder cattle (Texas Agricultural Statistics Service, 1994). According to the Natural Resource Conservation Service, bmsh infestation is a major problem on Texas rangelands (U.S. Dept. of Agric, 1964). The occurrence of bmsh reduces the capacity of these lands to support livestock and wildlife. As rangelands become infested with bmsh, carrying capacity decreases because forage production is decreased. "Worthless bmsh is slowly and surely suffocating the livestock industry in Texas and the Southwest by robbing ranches of their soil, water, and plant resources" (U.S. Dept. of Agric, 1964, p. 1). To individual ranchers, the presence of brush results in lost productivity and lower revenue. Texas had 35.8 million ha. of rangeland infested by woody plants in 1964, representing 82% of all rangelands (U.S. Dept. of Agric, 1964). In 1982 the five major bmsh species on Texas rangelands were mesquite (Prosopis glandulosa), pricklypear (Opuntia spp.), yucca (Yucca spp.), live oak (Quercus virginiana), and redberry juniper Juniperuspinchotii). By 1987 the major rangeland-invading bmsh species had altered slightly so that the five most common species were mesquite, pricklypear, black brush {Acacia rigidula), live oak, and redberry juniper (Texas Soil and Water Conservation Board, 1991) (Table 1.1).Item Feeding specific amino acids to increase redberry juniper consumption by goats(2012-05-12) Steele, Diana; Steele, Diana Kay; Scott, Cody B.; Salisbury, Micheal W.; Whitney, Travis R.; Russell, Connie; Angelo State University. Department of Agriculture.Redberry juniper (Juniperus pinchotii Sudw.) is a chemically defended, invasive brush species in western states. Previous research has demonstrated that goats supplemented with escape protein sources will consume a higher volume of juniper. In this study I attempted to increase the intake of juniper by recently weaned, Boer-Spanish cross goats (n = 30) by randomly placing them into four treatments and a control, and supplementing each treatment group with one of the following amino acids: arginine, proline, leucine, and glutamine. Treatments did not have a significant effect on juniper intake (P > 0.05). All goats increased intake over time (P > 0.05). Goats exhibited significant weight gain over the course of the study (P < 0.05). Blood serum metabolites were within normal limits. Future studies on escape protein supplementation may provide a better understanding of small ruminant physiology in relationship to intake of juniper.Item Maternal influence on juniper consumption in Boer-cross goats(2012-05-12) Jackson, James; Jackson, James Russell; Scott, Cody B.; Salisbury, Micheal W.; Taylor, Charles A.; Tarver, David J.; Angelo State University. Department of Agriculture.The objectives of this study were to determine if maternal influences increased redberry juniper (Junipers pinchottii Sudw.) consumption by goats. Twenty-one Boer nannies were bred to determine the effects of maternal influences from different stages of exposure. Experiment 1, examined the exposure in the uterus in the third trimester, Experiment 2 examined the effect of exposure through lactation. Experiment 3, examined the mothers influence as a social role model and the last treatment group was the control. At weaning, all kids were fed juniper in individual pens at the Angelo State University Management Instruction and Research Center, San Angelo, TX. Kids were fed juniper 30 min each day for 24 days and refusals were weighed back daily to monitor intake. Following the juniper feeding, kids were fed a basal diet of alfalfa pellets (2.5% BW) to meet body maintenance requirements. All kids increased intake over the 24 days of exposure. Kids that foraged with mom on juniper-dominated rangelands initially ate more juniper.