BIOLOGICAL CONSTRAINTS TO RUMINANT PRODUCTION

Small Ruminant: Goat Production

Chicory (Chicorum intybus) is becoming popular as a warm-season forage for ruminant livestock in the United States. A study was conducted with weaned crossbred meat goats to elucidate how growing / finishing meat goats grazing Joy chicory pasture respond to supplementation with varying levels of dietary protein. Thirty 6 weaned crossbred kids (26 ± 3 kg) were blocked by body weight and genotype...

Small Ruminant: Sheep Production 1

J. Anim. Sci. Vol. 88, E-Suppl. 2/J. Dairy Sci. Vol. 93, E-Suppl. 1/Poult. Sci. Vol. 89, E-Suppl. 1 M453 Milk yield and composition from dairy ewes fed two sources of lipid supplements associated or not with conjugated linoleic acid (CLA). M. Baldin1, R. Dresch1, J. Souza1, E. C. Sandri1, F. Batistel1, E. Ticiani1, A. Panzera1, L. O. Tedeschi3, M. A. S. Gama2, D. Fernandes1, and D. E. Oliveira*...

Small Ruminant: Production and Reproduction

Scientific data for carcass traits of terminal-sire sheep breeds can be used to improve the value of market lambs, but information is lacking for modern terminal-sire breeds in the United States. Thus, the effects of terminal-sire breed on 14 fabricated carcass measurements were determined in F1 wether lambs. Columbia, USMARC-Composite (Composite), Suffolk, and Texel rams were mated with mature...

Ruminant Nutrition Symposium: ruminant production and metabolic responses to heat stress.

Heat stress compromises efficient animal production by marginalizing nutrition, management, and genetic selection efforts to maximize performance endpoints. Modifying farm infrastructure has yielded modest success in mitigating heat stress-related losses, yet poor production during the summer remains arguably the costliest issue facing livestock producers. Reduced output (e.g., milk yield and m...

Ruminant Nutrition Symposium: Advancements in enhancing cell wall digestibility and its contribution to improve ruminant production.