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Full-Text Articles in Life Sciences
Some Factors Affecting The Postpartum Interval In Sheep, Jose Pedro Cannas Simoes
Some Factors Affecting The Postpartum Interval In Sheep, Jose Pedro Cannas Simoes
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The effect of genotype on the occurrence of ovulation and estrus during the interval from lambing to ovulation accompanied by estrus (postpartum interval) was measured in White-Face and Black-Face ewes that lambed during the breeding season in 1986 and 1987. A group of St. Croix ewes was added to the study in 1987. The influence of lactation on the events of the postpartum interval was measured by comparing intact and mastectomized White-Face and Black-Face ewes. The effect of prolactin on postpartum interval was measured in these two genotypes and in a group of bromocriptine-treated Black-Face ewes that lambed in 1986. …
Utilization Of Poultry Waste (Composted Caged-Layer) As A Supplement For Sheep Fed Straw During Late Pregnancy, Raul Meneses R.
Utilization Of Poultry Waste (Composted Caged-Layer) As A Supplement For Sheep Fed Straw During Late Pregnancy, Raul Meneses R.
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The utilization of composed caged-layer waste (CCLW) in diets for pregnant ewes fed cereal straw was evaluated. Five sheep were assigned to five diets containing, 0, 5.72, 11.37, 23.80, and 32.69% CCLW in a 5x5 Latin square design. Water intake, feed intake and feces output were measured. Feed and feces were analyzed for dry matter, crude protein, acid detergent fiber (ADF), neutral detergent fiber (NDF), organic matter, hemicellulose and minerals. Thus, nutrient digestibility and nitrogen balance could be calculated. Forty dry, pregnant ewes in the last third of generation were assigned to four dietary treatments contained 0, 11.25, 22.08 and …
U.S. Grazing Lands: 1950-8, Arthur B. Daugherty, United States Department Of Agriculture, Economic Research Service
U.S. Grazing Lands: 1950-8, Arthur B. Daugherty, United States Department Of Agriculture, Economic Research Service
All U.S. Government Documents (Utah Regional Depository)
U.S. livestock owners grazed their herds on 817 million acres in 1982, down about 20 percent from 1950. This drop resulted primarily from improved productivity of grazing lands, as animal units of cattle and sheep increased more than 30 percent during 1950-82. Only the Southern Plains, of all farm production regions, showed an increase in land grazed during 1950-82. Non-Federal grazing land consisted of rangeland (67 percent), pastureland (21 percent), and grazed forest (12 percent). More than 30 percent of the non-Federal range and pasture was rated in good to excellent condition, and 12 percent of the grazed forest had …