Preweaning data on 486 Angus, Brahman, and reciprocal cross calves (AB, BA) managed on common bermudagrass or endophyte-infected tall fescue were used to evaluate the interactions of forage type and sex of calf with direct effects, individual heterosis, and maternal effects. Calves were spring-born in 1988, 1989, 1990, and 1991 to five sires of each breed. Male calves were castrated at birth, a...

Simultaneous selection for low birth weight and high yearling weight has been advocated to improve efficiency of beef production. Two sublines of Line 1 Hereford cattle were established by selection either for below-average birth weight and high yearling weight (YB) or for high yearling weight alone (YW). Direct effects on birth weight and yearling weight diverged between sublines with approxim...

this research was conducted to evaluate the effect of different zinc (zn) sources on performance, bloodmineral and cell counts of zandi lambs. 18 male lambs at weaning were supplemented with two differentsources of zinc, 25 ppm znso4 and 25 ppm zinc-peptide added to the basal diet as control. live bodyweight, weight gain and feed efficiency improved with zn-peptide supplementation (p

Ahmed recently reviewed the evidence for an association between prolonged breastfeeding and malnutrition in developing countries. 1 They stated that most prior studies had demonstrated a negative association (increased malnutrition or lower mean nutritional status, both in terms of height-forage and weight-for-height, among prolonged breast-fed children), although an absence of a relationship, ...

Heterosis, assumed proportional to expected breed heterozygosity, was calculated for 6834 individuals with birth, weaning and yearling weight records from Cycle VII and advanced generations of the U.S. Meat Animal Research Center (USMARC) Germplasm Evaluation (GPE) project. Breeds represented in these data included: Angus, Hereford, Red Angus, Charolais, Gelbvieh, Simmental, Limousin and Compos...

A total of 28 litters (241 × 600, DNA) corresponding with 355 nursery pigs DNA; initially 13.0 lb) were used in 42-d trial (17-d pre-weaning and 24-d post-weaning). This was conducted to determine the effect providing a sensory attractant liquid (BlueLite Pro2Lyte; TechMix Global; Stewart, MN) suckling on underline sows after farrowing late lactation, weaning post-weaning feed intake growth. Tr...

A total of 28 litters (241 × 600, DNA) and 356 nursery pigs DNA; initially 12.5 lb) were used in 28-d trial (4-d pre-weaning 24-d post-weaning) to determine the effect providing enrichment cubes (supersized pellets that resemble cattle range size from 1.1 2.0 in. length 0.6 0.8 diameter) suckling late lactation after weaning on post-weaning feed intake growth. Treatments arranged a 2 factorial ...

Data from Hereford, 25% Simmental-75% Hereford, 50% Simmental-50% Hereford, and 75% Simmental-25% Hereford dams were used to estimate maternal heterosis and level of agreement with the dominance model. Cows were located at the Northern Agricultural Research Center near Havre, MT and were managed consistent with practices for western range environments. Sample halves of dam breed groups were bre...

BACKGROUND There is increased use of early nasal continuous positive airway pressure (NCPAP) to manage respiratory distress in preterm infants but optimal methods and factors associated with successful wean are not well defined. A systematic review was performed to define the corrected gestational age (CGA), weight to wean NCPAP and the methods associated with successful weaning of the NCPAP am...