Serologic profiles for Sarcocystis sp. and Neospora caninum and productive performance in naturally infected beef calves

2010 ◽  
Vol 106 (3) ◽  
pp. 689-693 ◽  
Author(s):  
Gastón Moré ◽  
Diana Bacigalupe ◽  
Walter Basso ◽  
Magdalena Rambeaud ◽  
Maria C. Venturini ◽  
...  
Keyword(s):  
Neospora Caninum ◽  
Productive Performance ◽  
Beef Calves

scholarly journals Evaluation of supplementation plans for suckling beef calves managed on tropical pasture

2017 ◽  
Vol 38 (2) ◽  
pp. 1027 ◽  
Author(s):  
Sidnei Antônio Lopes ◽  
Mário Fonseca Paulino ◽  
Edenio Detmann ◽  
Ériton Egídio Lisboa Valente ◽  
Luciana Navajas Rennó ◽  
...  
Keyword(s):  
Dry Matter ◽  
Neutral Detergent Fiber ◽  
Tropical Pasture ◽  
Productive Performance ◽  
Tropical Pastures ◽  
Beef Calves ◽  
Linear Effect ◽  
Mineral Mixture ◽  
And Performance ◽  
Average Body

This study assessed the effects of different amounts of supplement on the productive performance, nutrional caracteristics and behaviour of suckling beef calves, as well as on the productive performance of their dams on tropical pastures. Forty-four male Nellore beef calves with an average age of 120 days and an initial average body weight (BW) of 145±3.7 kg and their respective dams, with an average BW of 449±6.9 kg, were used. The amounts of supplement evaluated were as follows: 0 = calves received only mineral mixture ad libitum; 3, 6, and 9 = calves received 3, 6, or 9 g kg-1 BW of supplement, respectively, containing 250 g CP kg-1 (as-fed). The experimental design was completely randomized. A positive linear effect (P < 0.01) was observed in the intakes of dry matter and organic matter, and a cubic effect (P < 0.07) was observed for the intake of neutral detergent fiber corrected for ash and protein. There was quadratic effect (P < 0.06) for total digestibility of neutral detergent fiber. A cubic effect (P < 0.01) was observed for the calves’ performance. However, the calves’ supplementation did not affect the milk yield and performance (P ? 0.21) of their dams. The supplementation decreased grazing time (P < 0.01) but did not influence suckling time (P ? 0.59). It is recommended supplying of supplement containing 250 g CP kg-1 (as-fed) in amount 6 g kg-1 BW to suckling beef calves managed in tropical pasture. Supplementation of suckling beef calves increases the intake of dry matter, decreases grazing time and forage intake. However, it does not affect the suckling time and productive performance of their dams.

Ranch-management factors associated with antibody seropositivity for Neospora caninum in consignments of beef calves in Texas, USA

2001 ◽  
Vol 52 (1) ◽  
pp. 53-61 ◽  
Author(s):  
K.S Barling ◽  
J.W McNeill ◽  
J.C Paschal ◽  
F.T McCollum ◽  
T.M Craig ◽  
...  
Keyword(s):  
Neospora Caninum ◽  
Beef Calves ◽  
Factors Associated ◽  
Management Factors ◽  
Ranch Management

Association of serologic status for Neospora caninum with postweaning weight gain and carcass measurements in beef calves

2000 ◽  
Vol 217 (9) ◽  
pp. 1356-1360 ◽  
Author(s):  
Kerry S. Barling ◽  
John W. McNeill ◽  
James A. Thompson ◽  
Joe C. Paschal ◽  
F. Ted McCollum III ◽  
...  
Keyword(s):  
Weight Gain ◽  
Neospora Caninum ◽  
Beef Calves

scholarly journals PRODUCTIVE PERFORMANCE OF PRE-WEANED CALVES REARED IN THE PANTANAL

2019 ◽  
Vol 20 ◽  
Author(s):  
Luiz Orcirio Fialho de Oliveira ◽  
Urbano Gomes Pinto de Abreu ◽  
Rodrigo da Costa Gomes ◽  
Ériklis Nogueira ◽  
Juliana Correa Borges Silva ◽  
...  
Keyword(s):  
Live Weight ◽  
High Energy ◽  
Low Energy ◽  
Productive Performance ◽  
Early Weaning ◽  
Cattle Breeding ◽  
Beef Calves ◽  
Genetic Groups ◽  
Breeding Farms ◽  
Low Energy Diet

Abstract Early weaning (EW) has been adopted in cattle breeding farms in Pantanal as a strategy to increase the rate of pregnancy in cows. The primary income of these properties is the production of beef calves, and the price of these animals depends on their weight. Therefore, the calves subjected to EW should present weight similar to or higher than those of calves subjected to conventional weaning (CW). This study aimed to evaluate the productive performance of pure (Nellore) calves and crossbred (Nellore/Angus) calves reared in the Pantanal and subjected to either EW or CW. After EW, the calves were supplemented with concentrate at 1 kg/animal/day (low-energy diet) or 1% of live weight (high-energy diet). The weights adjusted to 300 days of age were higher for EW calves fed the high-energy diet (p<0.01) in both genetic groups. No significant differences were observed in the weight of EW animals fed the low-energy diet and CW animals (p>0.01), and animal weight was 241.17 and 236.27 kg in crossbred calves and 184.44 and 189.78 in Nellore calves, respectively. The EW adopted in this experimental model did not affect the productive performance of calves raised in the Pantanal.

scholarly journals Provision of a protein-rich supplement for grazing suckling female beef calves to improve productive performance and metabolic response

2021 ◽  
Author(s):  
Deilen S Moreno ◽  
Román Maza ◽  
David Contreras ◽  
Thiago Ramalho Moreira ◽  
Edson Junior Dos Santos ◽  
...  
Keyword(s):  
Metabolic Response ◽  
Productive Performance ◽  
Beef Calves ◽  
Protein Rich

Additional nutritional considerations for preconditioning beef calves.

EDIS ◽  
2017 ◽  
Vol 2017 (4) ◽  
Author(s):  
Philipe Moriel
Keyword(s):  
Average Daily Gain ◽  
Beef Steers ◽  
Labor Costs ◽  
Vaccine Response ◽  
Negative Effects ◽  
Beef Calves ◽  
Supplemental Feed ◽  
Concentrate Supplementation ◽  
Protein Supply ◽  
Daily Gain

Calves can be preconditioned using a wide variety of supplemental feed ingredients. However, feed ingredient selection is not the only factor to consider during a preconditioning process. Increasing the protein supply to stressed, preconditioning beef steers led to greater growth performance, and increased immune response to vaccination during a 42-day preconditioning period. Producers should not reduce the frequency of concentrate supplementation during the entire preconditioning period as it might lead to poorer vaccine response and average daily gain (consequently, less calf value at sale). However, a gradual reduction of frequency of supplementation is a supplementation strategy that can overcome these negative effects on growth and immunity, and allows producers to save on feeding and labor costs without producing lighter calves that have weaker immune responses.  

AN INVESTIGATION ON LIGHT COLOR AND STOCKING DENSITY ON SOME PRODUCTIVE PERFORMANCE OF BROILERS

2015 ◽  
Vol 14 (1) ◽  
pp. 167-186
Author(s):  
Mudhar A. S. Abu Tabeekh ◽  
Riyad K. Mosa ◽  
Rabia J. Abbas
Keyword(s):  
Stocking Density ◽  
Productive Performance ◽  
Light Color

ПРЕРЫВИСТОЕ ОСВЕЩЕНИЕ ПОВЫШАЕТ ЭФФЕКТИВНОСТЬ ИСКУССТВЕННОГО ОСЕМЕНЕНИЯ КУР В КЛЕТКАХ

2019 ◽  
Keyword(s):  
Reproductive Performance ◽  
Artificial Insemination ◽  
Egg Production ◽  
Laying Hens ◽  
Electric Energy ◽  
Productive Performance ◽  
Feed Conversion ◽  
Scientific Center ◽  
Academy Of Sciences ◽  
Egg Fertility

Intermittent Lighting Improves the Efficiency of Artificial Insemination in Cage Housed Laying Hens Kavtarashvili A.Sh., Kolokolnikova T.N. Federal Scientific Center “All-Russian Research and Technological Poultry Institute” of Russian Academy of Sciences Omsk Agrarian Scientific Center Summary: The effects of different lighting regimes on the oviposition schedule, productive performance, and reproductive efficiency in cage housed laying hens of layer parental flock (Hisex White-R) were studied; the reasonable regime of artificial insemination (AI) under intermittent lighting is proposed. It was found that intermittent lighting regime 1L:4D:4L:1D:4L:10D compared to the constant lighting significantly alters oviposition schedule: under this regime 82.3% of all daily eggs were laid until 9 am (vs. 66.6% in control). This regime and AI at 10 am improved the productive and reproductive performance compared to control (constant lighting 16L:8D and AI at 12 am): mortality by 1.9%, egg production per initial hen by 3.8%, egg weight by 1.1%, percentage of eggs suitable for incubation by 1.9%, egg fertility by 0.9%, hatchability by 2.3%, hatch of chicks by 2.9%, feed conversion ratio (kg of feed per 10 eggs) by 5.3%, the expenses of electric energy for lighting (per 1000 eggs suitable for incubation) by 54.5%. Key words: INTERMITTENT LIGHTING, CAGE HOUSED LAYERS, ARTIFICIAL INSEMINATION (AI), OVIPOSITION SCHEDULE, AI TIMING, PRODUCTIVE PERFORMANCE, REPRODUCTIVE PERFORMANCE

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