The effect of artificial lighting and cobalt supplementation on the performance and coat shedding of steers intensively finished in yards

1969 ◽  
Vol 9 (38) ◽  
pp. 278
Author(s):  
JG Morris

Forty steers were intensively finished in yards on rations of 90 per cent sorghum grain and 10 per cent of either sorghum silage or stubble. There were no significant differences in rate of body weight gain or efficiency of feed conversion of steers fed the two rations. The experiment commenced on July 2, 1965. An abrupt increase at this time in daylength by flood-lighting, for two 2-hour periods daily, had no significant effect on rate of body weight gain, feed efficiency or coat shedding of steers subjected to natural seasonal increases in daylength. The administration of a cobalt pellet to steers fed a low-cobalt sorghum grain had no effect on coat shedding or rate of body weight gain.

1967 ◽  
Vol 68 (1) ◽  
pp. 1-9 ◽  
Author(s):  
J. G. Morris ◽  
R. J. W. Gartner

1. A 23 factorial with a split-plot allocation of treatments was used to investigate the effects of silage type, (sweet v. grain sorghum); level of urea, (60ν. 120 g. per head per day); vitamin A,(0ν. 40,000 i.u. per head per day), and intraruminal cobalt oxide pellet on the performance of steers fed rations of 90% sorghum grain, 10% sorghum silage.


1969 ◽  
Vol 73 (1) ◽  
pp. 41-48 ◽  
Author(s):  
J. G. Morris ◽  
Patricia M. Pepper

SUMMARYThe intensive finishing of steers on simple rations of 10% sorghum stubble and 90% sorghum grain plus urea was investigated. Fine grinding of the grain resulted in a lower mean daily intake, but a significantly greater efficiency of conversion of feed to carcass weight gain (P < 0·01) than coarse grinding the grain. Coarse chaffing of the stubble significantly reduced the intake of the stubble in comparison with hammer milling, but had no significant effect on rate of body weight gain, total feed intake or efficiency of feed conversion.The addition to the ration of either 1 mg of selenium, or 200 mg vitamin E, 200 mg vitamin E and 100 mg vitamin K per day had no significant effect on rate or efficiency of body or carcass weight gain. Seven out of 32 steers which were not injected with 3 million i.u. of vitamin A at the start of the experiment exhibited nyctalopia. None of the 32 steers which received the vitamin A injection had hepatic vitamin A concentrations less than 33 μg/g. Vitamin A injection did not have a significant effect on the rate of body weight gain (mean ±S.E. 1·3 ± 0·03 kg per day), efficiency of feed conversion (10·4 ± 0·16 kg D.M. per kg carcass weight gain), or time to attain slaughter weight (133 ± 3 days). Drenching twice with thiabendazole had no significant effect on rate of body weight gain.


1966 ◽  
Vol 67 (2) ◽  
pp. 191-197 ◽  
Author(s):  
J. G. Morris

1. A study of the suitability of rations of predominately sorghum grain for the intensive finishing of steers is reported. Six groups, each of ten steers, 18 months old and of an average body-weight of 544 lb., were fed, according to a set schedule, increasing quantities of grain in the ration until two groups were each consuming rations containing 80, 90 or 100% grain. One of the two groups, fed each grain-to-roughage ratio, received 60 g. urea per head daily. Individual steers were slaughtered when they attained 900 lb. body-weight. A seventh group of ten comparable steers was slaughtered at the commencement of feeding in order to measure changes in body composition due to the nutritional treatments.


1983 ◽  
Vol 63 (2) ◽  
pp. 473-476
Author(s):  
L. J. FISHER ◽  
FRANK VAN MERLE

Thirty-two male Holstein calves, beginning at 1 wk of age, were used to estimate differences in weight gain between two feeding levels and two feeding frequencies over a period of 3 wk. Calves were randomly assigned to one of the following four treatments: whole milk (WM) fed at 10% of body weight (BW) twice a day; WM fed at 10% BW, three times a day; WM fed at 12% of BW, in two feedings per day, or WM fed at 12% of BW, in three feedings per day. Body weight gains and feed conversions were 279 and 437 g per day and 12.02 and 9.51 kg whole milk per kilogram of gain for the 10 and 12% levels of feeding, respectively. There was a trend towards increased rate of gain and improved feed efficiency when calves were fed twice compared to three times a day. Cost of medication was not influenced by level or frequency of feeding. It was concluded from this study that feeding whole milk at 12% of body weight was preferable to feeding at the 10% level of intake. Key words: Milk feeding, level, frequency, dairy calves


1969 ◽  
Vol 9 (36) ◽  
pp. 57 ◽  
Author(s):  
JG Morris ◽  
Patricia M Pepper ◽  
RJW Gartner

The effects of type of grain (wheat, barley, or sorghum), level of roughage (0, 1, and 2 kg of oaten chaff/head/day) and sodium chloride free choice on the performance of steers of a mean (� S.E.) body weight of 241 � 2 kg fed in yards for a mean period of 133 � 4 days were examined in a factorial experiment. The type of grain, the level of chaff offered to the steers, or the provision of sodium chloride had no significant effect on daily body weight gain (1.08 � 0.03 kg) or efficiency of conversion of feed dry matter (D.M.) to body weight or carcase weight gain (6.5 and 9.7 kg feed D.M./kg gain respectively). Steers fed wheat had a significantly (P<0.01) lower daily D.M. intake than those fed either barley or sorghum grain. The incidence of persistent laminitis, the death of a steer fed barley and the greater number of steers fed wheat not attaining slaughter weight of 385 kg by 180 days indicated that sorghum was probably a 'safer' grain to feed in high-grain rations than either wheat or barley. The level of oaten chaff offered to the steers did not appear to affect the incidence of digestive disturbances. Carcase weight gain represented a mean of 66.8 � 0.7 per cent of the body weight gain during finishing.


2016 ◽  
Vol 1 (1) ◽  
pp. 746-757
Author(s):  
Zulhelmi Zulhelmi ◽  
M. Aman Yaman ◽  
Cut Aida Fitri

Abstrak. Penelitian ini bertujuan untuk memanfaatkan limbah asal feses sapi sebagai bahan pembuatan pakan pelet guna memacu pertumbuhan ikan Lele Dumbo.  Penelitian ini dilakukan di Station Riset II (dua) Ie Suum, UPT. University Farm, Aceh Besar,  tanggal 22 Mei‒14 Agustus 2016. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL) terdiri dari 4 perlakuan dan 4 ulangan. Setiap ulangan merupakan unit percobaan, masing-masing terdiri dari 50 ekor ikan Lele Dumbo. Perlakuan menggunakan pakan komersil ikan 781 Hiprovite yang disubtitusikan dengan pakan pelet organik. Parameter yang diamati adalah berat badan, pertambahan berat badan, konsumsi pakan, konversi pakan, efisiensi pakan, kelangsungan hidup, dan kualitas air (pH, suhu, kelembaban, cahaya). Hasil penelitian menunjukkan perlakuan pakan limbah asal feses sapi berpengaruh sangat nyata (P0.01), terhadap berat badan, pertambahan berat badan, dan konsumsi ransum ikan Lele Dumbo, namun tidak berpengaruh nyata (P0,05)  terhadap konversi dan efisiensi pakan. Dari hasil penelitian ini dapat disimpulkan bahwa pakan pelet organik asal feses sapi dapat memacu pertumbuhan ikan Lele Dumbo. Utilization of Cattle Feces as Materials for Pellet Feed to The Weight Gain of Catfish Abstract. The aim of present study was to utilizase cattle feces as materials for making organic pellet feed to improve the growth of catfish.  The study was conducted  in Station Research II (two) Ie Seum Unit, University Farm, Aceh Besar, May 22-August 14, 2016. The study was designed into completely randomized design (CRD) consisting of 4 treatments and 4 replications. Each relication was an experimental unit consisting of 50 catfishes.The treatment was substition of commercial feed fish (781 Hiprovite) with  organic pellet feed with the level of 0, 10, 20, and 30%, respectively.  Parameters  measured were body weight, feed intake, feed conversion, feed efficiency,  livebility, and water quality  (pH, temperature, moisture, light). The results of study showed that administration of organic pellet feed  affected highly significant (P0.01) on body weight, body weight gain and feed intake of catfish. However, there were no significant effect (P0.05) on feed conversion and feed efficiency.  It was concluded that the organic pellet feed composed mainly from cattle feces could  improve the growth of catfish


2018 ◽  
Vol 3 (1) ◽  
pp. 5-11
Author(s):  
M. Musdalifa ◽  
Bahri Syamsuryadi ◽  
Abdul Hakim Fattah

The purpose of this research is to know the increase of body weight, feed consumption, feed efficiency and conversion of Bali cattle feed given fermented straw as substitution of Elephant Grass. The method used in this Experimental study Method with Randomized Block Design with four treatments and three replications. P2: Elephant Grass 100% (control) P1: Elephant Grass 75% + 25% fermented straw, P2 treatment: Elephant Grass 50% + 50% fermentation straw and P3 Treatment: 25% Grass + Finger straw 75 %. The observed changes were weight gain (kg/day), feed consumption (kg/day), feed efficiency and feed conversion in Bali cattle. The data obtained were analyzed in various ways with Duncan. The result of this research showed that by giving substitution of fermented straw to determine the performance of bovine cow have a real effect (P ≤.05) to the value of body weight gain, feed consumption, feed conversion and efficiency of feed. It shows that with the difference of feeding substitution of fermented straw can give the real effect on the increase of body weight of Bali cattle with feeding of forage grass 50% elephant + 50% fermented straw.


Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1511
Author(s):  
Joseph P. Gulizia ◽  
Kevin M. Downs

Two trials were conducted to determine feed color effects on broiler performance. A completely randomized design was used. Trial 1 included four treatments: control (complete broiler starter diet), red, green, and blue; and Trial 2 included four treatments: control, orange, yellow, and purple. Each trial had 4 treatments with 4 replicates (60 birds/treatment) fed to 240 male Cobb 500 broilers during a 21 d grow out. Data were analyzed using the GLM procedure. In Trial 1, there were no treatment effects on average body weight, body weight gain, and feed consumption (p > 0.05). Adjusted feed conversion for control (1.23) was less than red (1.27; p = 0.001) and green (1.26; p = 0.009), with blue (1.25; p = 0.056) tending to be different during the experimental period. In Trial 2, there were no treatment effects on average body weight, feed consumption, and adjusted feed conversion during this study (p > 0.05). Body weight gain between d 1 to 14 for purple (490.78 g/bird) was more than orange (467 g/bird; p = 0.013) and yellow (461 g/bird; p= 0.004), with control (474 g/bird; p = 0.052) tending to be different. Results indicate that these feed colors had some, albeit limited, influence on broiler performance parameters.


Author(s):  
Vijayalingam Thavasi Alagan ◽  
Rajesh Nakulan Vatsala ◽  
Ilavarasan Sagadevan ◽  
Vairamuthu Subbiah ◽  
Venkataramanan Ragothaman

Abstract Background An effort was made to assess the effectiveness of dietary supplementation of Ulva lactuca (U. lactuca), a seaweed and Azolla individually and in combination on different physiological parameters of Aseel chicken. A total of 40 Aseel chicks of 8 weeks old were allocated into four groups, C1 (control), T1 (Azolla alone), T2 (seaweed alone) and T3 (seaweed plus Azolla). Aseel chicks in C1 were fed with formulated grower feed alone, birds in T1 had control diet with 5% Azolla, birds in T2 had control diet with 3% U. lactuca and birds in T3 had control diet admixtured with 5% of Azolla and 3% of U. lactuca. Parameters were recorded for a continuous period of 2 months in 15 days interval. Results The growth performance was found to be significant (P ≤ 0.05) during 30 days of feed trials and highly significant (P ≤ 0.01) during 45 and 60 days of treatment. Birds in T3 had a higher body weight gain, shank length and feed conversion efficiency followed with T1 and T2 compared to C1. PCV, RBC, WBC and heterophil counts were not influenced (P ≥ 0.05) by dietary treatments. Uric acid, creatinine, AST, glucose, triglycerides and magnesium levels revealed a high significant (P ≤ 0.01) variation, and cholesterol level showed significant (P ≤ 0.05) changes during 30th and 60th day of feed trials between the control and treatment groups. Total protein, globulin, phosphorus and electrolytes like Na, K and Cl levels were not significant (P ≥ 0.05) during 30th day and were highly significant (P ≤ 0.01) during the 60th day of the trial. Conclusions It could be noted that inclusion of U. lactuca and Azolla as feed supplement in grower chicken had a better body weight gain when given in combination (U. lactuca and Azolla) rather than supplemented with the sole entity. Based on the haematological and serum biochemical analysis, the supplementation of U. lactuca and Azolla at the levels included in this trial did not pose any threat to the physiological well-being of Aseel chicken.


2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 245-246
Author(s):  
Cláudio U Magnabosco ◽  
Fernando Lopes ◽  
Valentina Magnabosco ◽  
Raysildo Lobo ◽  
Leticia Pereira ◽  
...  

Abstract The aim of the study was to evaluate prediction methods, validation approaches and pseudo-phenotypes for the prediction of the genomic breeding values of feed efficiency related traits in Nellore cattle. It used the phenotypic and genotypic information of 4,329 and 3,594 animals, respectively, which were tested for residual feed intake (RFI), dry matter intake (DMI), feed efficiency (FE), feed conversion ratio (FCR), residual body weight gain (RG), and residual intake and body weight gain (RIG). Six prediction methods were used: ssGBLUP, BayesA, BayesB, BayesCπ, BLASSO, and BayesR. Three validation approaches were used: 1) random: where the data was randomly divided into ten subsets and the validation was done in each subset at a time; 2) age: the division into the training (2010 to 2016) and validation population (2017) were based on the year of birth; 3) genetic breeding value (EBV) accuracy: the data was split in the training population being animals with accuracy above 0.45; and validation population those below 0.45. We checked the accuracy and bias of genomic value (GEBV). The results showed that the GEBV accuracy was the highest when the prediction is obtained with ssGBLUP (0.05 to 0.31) (Figure 1). The low heritability obtained, mainly for FE (0.07 ± 0.03) and FCR (0.09 ± 0.03), limited the GEBVs accuracy, which ranged from low to moderate. The regression coefficient estimates were close to 1, and similar between the prediction methods, validation approaches, and pseudo-phenotypes. The cross-validation presented the most accurate predictions ranging from 0.07 to 0.037. The prediction accuracy was higher for phenotype adjusted for fixed effects than for EBV and EBV deregressed (30.0 and 34.3%, respectively). Genomic prediction can provide a reliable estimate of genomic breeding values for RFI, DMI, RG and RGI, as to even say that those traits may have higher genetic gain than FE and FCR.


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