Lifetime productivity of crossbred cows. 1. Experimental design, growth and carcass characteristics of progeny

1991 ◽  
Vol 31 (3) ◽  
pp. 285 ◽  
Author(s):  
MP Deland ◽  
S Newman
Keyword(s):  
Experimental Design ◽  
Bos Indicus ◽  
Carcass Characteristics ◽  
Dual Purpose ◽  
Crossbred Cows ◽  
Arid Conditions ◽  
Semi Arid

First crosses of Hereford with large and small dairy type (Friesian and Jersey), British beef type (Shorthorn), Bos indicus dairy and beef type (Sahiwal and Brahman), and European beef and dual-purpose type (Charolais and Simmental) females were reared on different properties and joined with Hereford bulls, to produce backcross calves under semi-arid conditions in southern Australia from 1976 to 1984. Parity x breed effects were important for all traits studied. In general, calves out of European cross dams were heaviest at weaning and slaughter and yielded higher carcass weights than other types, but calves out of dairy cross cows (especially Friesian cross) had fatter carcasses. Calves out of zebu cross dams expressed lower carcass weights in spite of relatively high dressing percentages. Calves out of Shorthorn cross cows were lightest at all ages and expressed the lowest dressing percentages.

scholarly journals AGRONOMIC EFFICIENCY OF THE INTERCROPPING OF ARUGULA WITH CARROT UNDER DIFFERENT POPULATION COMBINATIONS

2016 ◽  
Vol 29 (1) ◽  
pp. 76-84 ◽  
Author(s):  
THAÍZA MABELLE DE VASCONCELOS BATISTA ◽  
FRANCISCO BEZERRA NETO ◽  
ÍTALO NUNES SILVA ◽  
MAIELE LEANDRO DA SILVA ◽  
ELIANE QUEIROGA DE OLIVEIRA ◽  
...  
Keyword(s):  
Experimental Design ◽  
Maximum Yield ◽  
Population Densities ◽  
Agronomic Efficiency ◽  
Green Mass ◽  
Sole Crop ◽  
Arid Conditions ◽  
Caatinga Biome ◽  
Brazilian Northeast ◽  
Semi Arid

ABSTRACT: The objective of this study was to evaluate the agronomic efficiency of intercropping combinations of carrot and arugula at different population densities in bicropping in the semi-arid conditions of the Brazilian Northeast. The study was conducted at the "Rafael Fernandes" Experimental Farm of the Universidade Federal Rural do Semi-Árido (UFERSA) during the period September 2011 to February 2012. The experimental design was of randomized complete blocks with treatments arranged in a 4 x 4 factorial scheme with four replications. The combinations were four population densities of carrot (40, 60, 80 and 100% of the recommended population in sole crop - RPSC) with four population densities of arugula (40, 60, 80 and 100% of the RPSC). The recommended population densities for sole crops of carrot and arugula are 500,000 and 1,000,000 plants per hectare, respectively. All treatments were fertilized with hairy woodrose (Merremia aegyptia L.), a spontaneous species of the Caatinga biome. The highest agronomic efficiency of carrot intercropped with arugula in bicropping was achieved in the combination of 40% of RPSC for the carrot and 100% of RPSC for the arugula. The commercial maximum yield (33.74 t ha-1) of carrot roots and the maximum yields of arugula green mass (8.06 and 2.67 t ha-1) in both cultivations were also obtained in the combination of population densities of 40% of RPSC for carrot and 100% of RPSC for arugula.

scholarly journals 71 Effects of timing of supplementation during late gestation in Bos indicus-influenced beef cows on post-weaning growth, immunity, and carcass characteristics of steer progeny

2020 ◽  
Vol 98 (Supplement_2) ◽  
pp. 59-59
Author(s):  
Elizabeth Palmer ◽  
Marcelo Vedovatto ◽  
Juliana Ranches ◽  
Vinicius Gouvea ◽  
Rhaiza Oliveira ◽  
...  
Keyword(s):  
Bos Indicus ◽  
Carcass Characteristics ◽  
Beef Cows ◽  
Late Gestation ◽  
Experimental Unit ◽  
Carcass Quality ◽  
Diarrhea Virus ◽  
Randomized Design ◽  
Distillers Grain ◽  
Dried Distillers Grain

Abstract This study evaluated the growth, immunity, and carcass characteristics of beef steers born to cows offered dried distillers grains (DDG) at different timing during late gestation. Approximately 84 d before calving (d 0), 84 mature Brangus cows were stratified by BW and BCS (422 ± 42 kg; 5.0 ± 0.14) and allocated into 1 of 6 bahiagrass pastures (14 cows/pasture). Treatments were randomly assigned to pastures: 1) no prepartum supplementation (CON); 2) 1 kg/d DDG from d 0 to 84 (LATE84); or 3) 2 kg/d from d 0 to 42 (LATE42). Calves were weaned at 261 ± 23 d of age. At weaning, 38 steers were vaccinated against bovine viral diarrhea virus (BVDV-1) and parainfluenza-3 (PI-3) and transported to a feedlot facility. Steers were penned according to cow prepartum pasture distribution and fed a similar diet until slaughter (d 587). Data were analyzed as complete randomized design using MIXED procedure of SAS, pasture as the experimental unit, treatment as fixed effect, and pasture(treatment) and steer(pasture) as random effects. Steer feedlot BW, ADG, DMI, and G:F did not differ (P ≥ 0.12) among treatments. Plasma haptoglobin concentrations were greater (P ≤ 0.03) for LATE42 and LATE84 vs. CON steers 2 d after feedlot entry. Plasma cortisol and seroconversion for BVDV-1 and PI-3 did not differ (P ≥ 0.15) among treatments. The percentage of carcasses grading Choice did not differ (P = 0.13), but carcasses grading low Choice were greater (P = 0.03) for CON vs. LATE42, with LATE84 being intermediate (91, 40, and 58%, respectively). Thus, prepartum dried distillers grain supplementation to B. indicus-influenced cows did not enhance feedlot growth but had subtle positive impacts on carcass quality and innate immunity in steer progeny. In addition, timing of dried distillers grain supplementation (last 84 d vs. first 42 d of late gestation) did not impact steer post-weaning feedlot performance and carcass quality.

Triazine carryover in semi-arid conditions

1990 ◽  
Vol 9 (6) ◽  
pp. 429-432 ◽  
Author(s):  
O.A. Chivinge ◽  
B. Mpofu
Keyword(s):  
Arid Conditions ◽  
Semi Arid

Genetic parameters of Barki sheep raised under semi-arid conditions

1969 ◽  
Vol 11 (3) ◽  
pp. 361-367 ◽  
Author(s):  
M. H. Fahmy ◽  
E. Salah E. Galal ◽  
Y. S. Ghanem ◽  
S. S. Khishin
Keyword(s):  
Genetic Parameters ◽  
Genetic Correlations ◽  
Research Station ◽  
Phenotypic Correlations ◽  
Arid Conditions ◽  
Body Weights ◽  
Genetic And Phenotypic Correlations ◽  
Fleece Weight ◽  
Semi Arid ◽  
Desert Research

SUMMARYRecords on 695 lambs were collected over a period of 5 years from 1961/62 to 1965/66, at Ras El-Hekma Desert Research Station, 230 km west of Alexandria. The characters studied were birth, weaning and yearling body weights, pre- and post-weaning daily gains and greasy fleece weight.Birth, 120-day and 365-day body weights were 3·4, 18·2 and 33·4 kg respectively. Greasy fleece weight at 16 months of age was 3·29 kg. Heritability estimates of birth, weaning, yearling weights, pre- and post-weaning daily gains and greasy fleece weight were 0·22, 0·45, 0·41,0·45 and 0·29 respectively. Genetic and phenotypic correlations between birth, weaning and yearling weights were all positive and significant. Genetic correlations between fleece weight and body characteristics were negative and low.

Competition between maize andDatura stramoniumin an irrigated field under semi‐arid conditions

Weed Research ◽  
1999 ◽  
Vol 39 (3) ◽  
pp. 225-240 ◽  
Author(s):  
Cavero ◽  
Zaragoza ◽  
Suso ◽  
Pardo
Keyword(s):  
Arid Conditions ◽  
Semi Arid

Quantifying risk for water harvesting under semi-arid conditions

2005 ◽  
Vol 76 (2) ◽  
pp. 77-93 ◽  
Author(s):  
M. Tsubo ◽  
S. Walker ◽  
M. Hensley
Keyword(s):  
Water Harvesting ◽  
Arid Conditions ◽  
Semi Arid ◽  
Quantifying Risk

scholarly journals In situ degradability of dry matter and fibrous fraction of sorghum silage

2016 ◽  
Vol 38 (2) ◽  
pp. 171 ◽  
Author(s):  
Renê Ferreira Costa ◽  
Daniel Ananias de Assis Pires ◽  
Marielly Maria Almeida Moura ◽  
José Avelino Santos Rodrigues ◽  
Vicente Ribeiro Rocha Júnior ◽  
...  
Keyword(s):  
Experimental Design ◽  
Dry Matter ◽  
Degradation Rate ◽  
Degradation Kinetics ◽  
Grain Sorghum ◽  
Dual Purpose ◽  
Ruminal Degradability ◽  
Sorghum Silage ◽  
Kinetics Of

This study aimed to evaluate in situ degradability and degradation kinetics of DM, NDF and ADF of silage, with or without tannin in the grains. Two isogenic lines of grain sorghum (CMS-XS 114 with tannin and CMS-XS 165 without tannin) and two sorghum hybrids (BR-700 dual purpose with tannin and BR-601 forage without tannin) were ensiled; dried and ground silage samples were placed in nylon bags and introduced through the fistulas. After incubation for 6, 12, 24, 48, 72 and 96 hours, bags were taken for subsequent analysis of fibrous fractions. The experimental design was completely randomized with 4 replicates and 4 treatments and means compared by Tukey’s test at 5% probability. As for the DM degradation rate, silage of CMSXS165without tannin was superior. Silages of genotypes BR700 and CMSXS 114 with tannin showed the highest values of indigestible ADF (59.54 and 43.09%). Regarding the NDF, the potential degradation of silage of CMSXS165 line without tannin was superior. Tannin can reduce ruminal degradability of the dry matter and fibrous fractions. 

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