SUPPLEMENTAL FAT AS AN ENERGY SOURCE IN THE DIETS OF SWINE AND RATS: I. FOOD AND ENERGY UTILIZATION

1962 ◽  
Vol 42 (1) ◽  
pp. 23-32 ◽  
Author(s):  
M. S. Kuryvial ◽  
J. P. Bowland ◽  
R. T. Berg
Keyword(s):  
Energy Source ◽  
Average Daily Gain ◽  
Feed Utilization ◽  
Energy Utilization ◽  
Male Rats ◽  
Feed Consumption ◽  
Or Efficiency ◽  
Castrate Male ◽  
Digestible Energy ◽  
Supplemental Fat

Experiments with castrate male Landrace × Lacombe – Yorkshire and Yorkshire × Lacombe – Yorkshire pigs, weighing 15 to 195 pounds, and with weanling male rats, were designed to study the value of stabilized tallow as an energy source. A 3 × 3 factorial design was used with rations containing 0, 15 and 30 per cent supplemental fat (gross energy levels of 4.0, 4.8 and 5.4 kcal./gm. of ration) and 14, 18 and 22 per cent protein.The addition of 15 or 30 per cent supplemental fat to the rations of pigs decreased feed consumption, increased average daily gain, and improved efficiency of digestible energy and feed utilization. Generally the higher levels of protein in the ration resulted in increased feed consumption, increased rate of gain, and improved efficiency of digestible energy and feed utilization as compared to the lower level of protein. The results from the rat experiment were similar, except that fat levels in the rations did not influence rate of gain or efficiency of digestible energy utilization.Carcasses of pigs receiving supplemental fat in their rations had an increased thickness of backfat and higher dressing percentage. As protein levels in the rations increased, average backfat thickness decreased and area of loin muscle increased. Several significant interactions occurred which were associated with breeding or with replicate differences.

LYSINE AND FAT SUPPLEMENTATION OF WEANLING PIG DIETS

1967 ◽  
Vol 47 (1) ◽  
pp. 47-55 ◽  
Author(s):  
G. H. Anderson ◽  
F. P. Bowland
Keyword(s):  
Feed Intake ◽  
Basal Diet ◽  
Feed Utilization ◽  
Energy Utilization ◽  
Feed Consumption ◽  
Maximum Efficiency ◽  
Initial Weight ◽  
Fat Supplementation ◽  
Digestible Energy ◽  
Yorkshire Pigs

Three experiments, each of 6 weeks duration, were conducted with 23-day-old pigs averaging 5.9 kg initial weight. Three and four successive 0.2% additions of L-lysine to a 0.45% lysine, 14.2% protein basal diet improved feed consumption, gain, and the efficiency of feed and energy utilization. Adding 5% fat to the diets resulted in greater responses in gain and feed intake and conversion with male than with female pigs. No difference was observed between Yorkshire and Lacombe × Yorkshire pigs. A calorie-lysine ratio of 4000-kcal digestible energy per kg per unit percentage lysine was shown to be adequate for maximum efficiency of feed utilization, but a ratio of at least 3500:1 was needed for maximum gains.Metabolism trials were conducted when pigs were 5 and 9 weeks of age. Supplemental lysine increased the digestibility of lysine and the retention of nitrogen. The nitrogen digestibility improved with age of both sexes, but lysine digestibility improved with aging of the male pigs only. More energy and nitrogen were digested and more nitrogen was retained from the diets by the Yorkshire than by the Lacombe × Yorkshire pigs, especially at 5 weeks of age. The addition of fat did not influence any of the metabolism measures. The better diets were compared with a 22% protein, 1.18% lysine practical prestarter. Results did not differ between the diets.

scholarly journals PEMANFAATAN DEDAK PADI TERFERMENTASI UNTUK MENINGKATKAN PERTUMBUHAN BABI

2017 ◽  
Vol 20 (3) ◽  
pp. 129
Author(s):  
MAHARDIKA I G. ◽  
I W. SUDIASTRA
Keyword(s):  
Rice Bran ◽  
Feed Efficiency ◽  
Average Daily Gain ◽  
Feed Consumption ◽  
Digestible Energy ◽  
Daily Gain

The research has been conducted which aims to analisys the effect of fermented rice bran to pig performance.Completly Randomize Design with 4 treatments and 4 replicates were used in this research. Treatment A: pig givenration containing rice bran without fermentation, treatment B: pig given ration containing 25% fermented rice bran,treatment C: pig given ration containing 50% fermented rice bran, and treatment D: pig given ration containing100% fermented rice bran. Observed variabels are: feed consumption, average daily gain, feed convertion ratio,digestability of nutrient dan digestible energy (DE). Results of this study concluded the used of fermented rice branincreased of growth and feed efficiency.

PERFORMANCE OF GILTS AND BARROWS FROM THREE BREEDING GROUPS MARKETED AT THREE LIVEWEIGHTS WHEN OFFERED DIETS CONTAINING TWO LEVELS OF DIGESTIBLE ENERGY FOR A LIMITED PERIOD PER DAY

1970 ◽  
Vol 50 (1) ◽  
pp. 161-170 ◽  
Author(s):  
P. J. SKITSKO ◽  
J. P. BOWLAND
Keyword(s):  
Average Daily Gain ◽  
Backfat Thickness ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Digestible Energy ◽  
Feeding Methods ◽  
Yorkshire Pigs ◽  
Dressing Percentage ◽  
Daily Gain ◽  
Market Weights

The influence of high (HE) and low (LE) digestible energy diets fed for two 1-hr periods per day on the performance of Duroc × Yorkshire, Hampshire × Yorkshire, or Yorkshire × Yorkshire pigs marketed at 68, 91 or 114 kg liveweight was studied. Under the feeding system employed, daily feed intake averaged 2.01 kg and did not differ between dietary groups. The HE diet containing 3652 kcal DE/kg improved (P < 0.01) rate of gain and feed conversion compared with the LE diet containing 2757 kcal DE/kg. DE requirement averaged 9.89 Mcal/kg gain and did not differ between dietary groups. Carcasses from pigs fed the HE diet had higher dressing percentage, greater total backfat thickness, and lower ratio of loin to backfat thickness, percent lean in the ham face, ham as a percent of carcass and Canadian ROP score.Barrows had a higher daily feed consumption and average daily gain but were inferior to gilts in feed conversion. Gilts were superior to barrows in all carcass measurements except dressing percentage, where differences were nonsignificant.Breeding groups differed (P < 0.01) in rate of gain, feed conversion, and dressing percentage and their carcasses differed in loin area and length. Feed required per unit gain increased with increasing market weights but gain did not differ. With increasing market weights, dressing percentage, length, loin area and total backfat thickness increased while the ham as a percent of carcass and ROP scores decreased. Market weight did not significantly alter the ratio of loin area to total backfat, suggesting that the present Canadian carcass grading standards should be extended to cover a greater weight range without penalty.Major significant interactions for average daily gain existed between diet by sex and diet by breeding group and for feed conversion between diet by sex. The data indicate that sex and breeding background of market pigs are important considerations in formulation of energy requirements. Use of LE diets or of feeding methods that restrict DE intake may mask potential differences that exist between groups.

The use of whole wheat grain in feeding of broiler chickens

2020 ◽  
pp. 3-8
Author(s):  
V. Khamitova ◽  
A. Osmanyan
Keyword(s):  
Broiler Chickens ◽  
Average Daily Gain ◽  
Live Weight ◽  
Economic Effectiveness ◽  
Metabolic Energy ◽  
Productivity Index ◽  
Feed Consumption ◽  
Meat Production ◽  
Wheat Grain ◽  
Whole Wheat

An experiment has been conducted to determine the effectiveness of growing broiler chickens when whole wheat grain has been included in the compound feed. The purpose of the research was to develop an appropriate scheme and dose for feeding whole wheat grain depending on the age of broilers, while observing the normative content of metabolic energy and nutrients in the diets, and to determine the economic effectiveness of rearing of broilers. To determine the effectiveness, data on live weight, growth rate, livability, uniformity of broiler population by live weight and variability of live weight of chickens have been studied. In the course of the work, the livability, average daily gain, feed conversion, homogeneity and variability coefficients, and the productivity index have been calculated. An increase in the live weight of broilers, as well as the rate of growth in pre-slaughter age when using whole grains in poultry diets, as well as a decrease in feed consumption per unit of live weight gain has been revealed. In conclusion, the economic effectiveness of broiler meat production has determined when whole grain has been included in diets. The use of whole wheat grain as an additive to the main diet in broiler feeding allowed to increase profits and increase the level of profitability. It has been found as a result of research that it is advisable to add whole wheat grain to the main diet for broilers at the age of 8–14 days in an amount of 5 % of the feed weight, at the age of 15–21 days – 15 %, at the age of 22–28 days – 20 %, at the age of 21–29 days – 30 % of grain without reducing the overall nutritional value of the diet.

scholarly journals Effects of Rocket Seed Oil, Wheat Germ Oil, and Their Mixture on Growth Performance, Feed Utilization, Digestibility, Redox Status, and Meat Fatty Acid Profile of Growing Rabbits

Agriculture ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 662
Author(s):  
Sabrin Abdelrahman Morshedy ◽  
Ahmed M. Abdelmodather ◽  
Mohamed M. Basyony ◽  
Soliman A. Zahran ◽  
Mohamed A. Hassan
Keyword(s):  
Immune Response ◽  
Fatty Acid ◽  
Growth Performance ◽  
Wheat Germ ◽  
Seed Oil ◽  
Average Daily Gain ◽  
Feed Utilization ◽  
Nutrient Digestibility ◽  
Control Group ◽  
Wheat Germ Oil

Vegetable oils are a source of natural antioxidants, including tocopherols, sterols, phenolic compounds, coenzymes, and polyunsaturated fatty acids that provide nutritional value, organoleptic properties, and significantly delay or prevent lipid oxidation. Eighty-four V-line rabbits at 5 weeks of age with an initial body weight (BW) of 535.60 ± 13.48 g were assigned randomly to four experimental groups (seven replicates in each group with three rabbits each). The first group served as a control and received 0.3 mL/kg BW of distilled water (CON), while the second and third groups received 0.3 mL/kg BW of rocket seed oil (RSO) and wheat germ oil (WGO), respectively. The fourth group received a mixture of oils consisting of 0.15 mL of RSO and 0.15 mL of WGO/kg BW (MOs). The experiment lasted 7 weeks. The study investigated the effects of RSO, WGO, and their mixture on growth performance, feed utilization, antioxidant status, and immune response of growing rabbits. The results indicated that the rabbits that were administered orally with RSO and WGO or their mixture had higher (p ≤ 0.05) final BW, weight gain, and average daily gain when compared to the control group. In addition, the feed conversion ratio improved significantly with RSO, WGO, and MOs treatments. Different oil treatments improved nutrient digestibility, nutritive value, and nitrogen balance. Moreover, the rabbits that received RSO, WGO, and their mixture had an improvement the meat fatty acid composition compared to the control rabbits. Oral administration of RSO, WGO, and their mixture significantly improved serum protein fractions, decreased blood urea nitrogen, and had a positive effect on serum total lipids, HDL-c, and LDL-c. Furthermore, the treatments of RSO, WGO, and MOs had a significant improvement in the antioxidative status and immune response.

PSIII-16 Growth Performance of Weaned Pigs Fed Barley Differing in Fermentable Starch and Fiber Profile

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 175-176
Author(s):  
Joaquin J Sanchez Zannatta ◽  
L F Wang ◽  
Eduardo Beltranena ◽  
Aaron D Beattie ◽  
Rex N Newkirk ◽  
...  
Keyword(s):  
Energy Source ◽  
Growth Performance ◽  
Steam Explosion ◽  
Phase 1 ◽  
Average Daily Gain ◽  
Barley Grain ◽  
Gut Health ◽  
Weaned Pigs ◽  
Cereal Grain ◽  
Hulled Barley

Abstract Barley grain containing more fermentable starch or fiber might be an attractive energy source in weaned pig diets due to benefits on gut health. Barley rapidly-fermentable carbohydrates may serve as prebiotic and slowly-fermentable fiber may decrease diarrhea in weaned pigs. Steam-explosion processing may disrupt the fiber matrix of hulls, increasing slowly-fermentable fiber of barley. To explore, 220 pigs were fed 1 of 5 diets containing 60% cereal grain: 1) low-fermentable hulled barley (LFB); 2) LFB steam-exploded (LFB-E; 1.2 MPa, 120 s); 3) high β-glucan (10% DM) hull-less barley (HFB); 4) high amylose (17% DM) hull-less barley (HFA); or 5) low-fermentable wheat (LFW). Diets were fed starting 1-week post-weaning and formulated to provide 2.4 and 2.3 Mcal net energy (NE)/kg, 5.5 and 5.1 g standardized ileal digestible lysine/Mcal NE for phase 1 (day 1–14) and phase 2 (day 15–35), respectively. For the entire trial (day 1–35), average daily feed intake (ADFI) and average daily gain (ADG) of pigs did not differ among diets. Gain:feed (G:F) did not differ between LFB and LFW diets, but steam-explosion of hulled barley reduced (P &lt; 0.05) G:F. Feces consistency did not differ between LFB and LFW diets, but was better (P &lt; 0.05) for LFB than HFB, HFA and LFB-E diets. For phase 1, G:F of pigs was lower (P &lt; 0.05) for LFB-E diet than LFW diet. For days 22–28, LFB-E diet had greater (P &lt; 0.01) ADFI than HFA diet and tended (P = 0.09) to have a greater ADG than HFB diet. In conclusion, hulled or hull-less barley grain replaced wheat grain without affecting growth performance in weaned pigs. Hulled barley increased feces consistency. Steam-explosion of hulled barley did not increase growth performance of weaned pigs. Barley grain is an attractive energy source for weaned pigs for managing growth and feces consistency.

159 Evaluation of Bacillus Subtilis PB6 Probiotic (CLOSTAT® 500) on Feedlot Phase Growth Performance, Efficiency of Dietary Net Energy Utilization, and Fecal and Subiliac Lymph Node Salmonella Prevalence

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 119-120
Author(s):  
Zachary K Smith ◽  
Paul Rand R Broadway ◽  
Keith Underwood ◽  
Warren C Rusche ◽  
Julie Walker ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Lymph Node ◽  
Lymph Nodes ◽  
Growth Performance ◽  
Block Design ◽  
Average Daily Gain ◽  
Energy Utilization ◽  
Experimental Unit ◽  
Net Energy ◽  
Fecal Samples

Abstract Yearling beef steers (n = 238; initial BW=402 ± 31.2 kg) were used to evaluate a Bacillus subtilis probiotic on growth performance, dietary net energy (NE) utilization, carcass characteristics, and fecal and subiliac lymph node Salmonella prevalence during a 140-d finishing period. Steers were allotted to 24 pens (n = 9 to 10 steers/pen) and assigned to one of two treatments (12 pens/treatment): no probiotic (CON) or 0.50 g·steer-1·d-1 of a Bacillus subtilis PB6 probiotic (CLOSTAT® 500, Kemin Industries, Des Moines, IA; CLO). Steers were transitioned to a 90% concentrate diet (DM basis) over 14-d. Steers were fed once daily at 0700 h; bunks were managed according to a slick bunk management. Fecal samples were collected on d 1, 28, 56, 112, and 140 from each pen (n = 5 steers/pen) via rectal palpation and composited by pen for determination of Salmonella prevalence. Upon harvest, subiliac lymph nodes were obtained from 60 steers in CON and 57 steers in CLO. Data were analyzed as a randomized complete block design; pen was the experimental unit; α of 0.05 determined significance. No differences were detected (P ≥ 0.25) between treatments for live or carcass-adjusted average daily gain, dry matter intake, gain efficiency, dietary NE utilization, nor calculated dietary NE content based upon performance. No differences were detected between treatments for any carcass traits (P ≥ 0.15). Salmonella was not recovered in any fecal samples except on d 112, where steers from CLO had a numerically lower (P = 0.17; 8.3 vs. 25.0%) incidence of fecal Salmonella compared to CON and on d 140 fecal, where Salmonella incidence did not differ (P = 0.34; 0.0 vs. 8.3%) for CON and CLO, respectively. Salmonella was not recovered in any subiliac lymph nodes. These data indicate that CLO did not influence growth performance or Salmonella prevalence.

Effects of in vivo gonadal hormone environment on in vitro hGRF-40-stimulated GH release

1985 ◽  
Vol 249 (3) ◽  
pp. E276-E280 ◽  
Author(s):  
W. S. Evans ◽  
R. J. Krieg ◽  
E. R. Limber ◽  
D. L. Kaiser ◽  
M. O. Thorner
Keyword(s):  
Female Rats ◽  
Male Rats ◽  
Gonadal Hormone ◽  
Base Line ◽  
Pituitary Cells ◽  
Intact Male ◽  
Castrate Male ◽  
Basal Release

The effects of gender and the gonadal hormone environment on basal and stimulated growth hormone (GH) release by dispersed and continuously perifused rat anterior pituitary cells were examined. Cells from intact male and diestrus day 2 female rats and from castrate male rats either untreated or treated with testosterone (T) or 17 beta-estradiol (E2) were used. Basal GH release (ng/min per 10(7) cells; mean +/- SE) by cells from diestrus day 2 female rats was less than by cells from castrate rats treated with T (4.3 +/- 0.6 vs. 11.4 +/- 2.7, respectively; P less than 0.025). No other differences in basal release were detected. Concentration-response relationships were documented between human GH-releasing factor 40 (hGRF-40; 0.03-100 nM given as 2.5-min pulses every 27.5 min) and GH release. Mean (+/- SE) overall GH release (ng/min per 10(7) cells) above base line was greater by cells from intact male rats (496 +/- 92) than by cells from castrate (203 +/- 37.3; P less than 0.0001), castrate and T-treated (348 +/- 52.8; P = 0.008), or castrate and E2-treated (58.1 +/- 6.8; P less than 0.001) male rats or by diestrus day 2 rats (68.6 +/- 9.5; P = 0.0001).(ABSTRACT TRUNCATED AT 250 WORDS)

Certain aspects of the host-parasite relationship ofNematospiroides dubius(Baylis). II. The effect of sex on experimental infections in the rat (an abnormal host)

Parasitology ◽  
1961 ◽  
Vol 51 (3-4) ◽  
pp. 499-510 ◽  
Author(s):  
Colin Dobson
Keyword(s):  
Male Rats ◽  
Male Rat ◽  
Normal Male ◽  
Female Rat ◽  
Castrate Male ◽  
Parasite Relationship ◽  
Nematospiroides Dubius ◽  
Resistance To Infection ◽  
Host Parasite ◽  
The Relationship

1. The male rat is more susceptible to infections ofNematospiroides dubiusthan the female. As the rat grows older the resistance of the female rat to infection increases at a greater rate than that of the male.2. The course of the infection is modified by the sex of the host.3. More larvae penetrated the intestinal mucosa to encyst in the male than in the female. More larvae, however, formed cysts in the female than in the male rat by the fifth day.4. The male harboured more adult worms than the female rat, although this difference was not significant in the immature animals.5. The sex resistance of the rat toN. dubiusinfections was removed by bilateral gonadectomy. Castration decreased the susceptibility of the male rat, while spaying increased it in the female compared with the susceptibility in the respective normal hosts.6. Subsequent replacement of the homologous sex hormone in the gonadectomized rat restores the sex resistance, and may even increase it (particularly in the immature animals). Oestradiol increased the resistance of the spayed female rat, while testosterone increased the susceptibility of the castrate male rat to infection.7. Oestradiol implanted in castrate male rats increased the resistance of these hosts to a greater level than was shown in the normal male rat.8. The rat shows a marked age resistance over which the sex resistance is superimposed.9. The relationship between the sex of the host and its resistance to infection is discussed.This work was done during the tenure of a Department of Scientific and Industrial Research Studentship. My thanks are due to Dr E. T. B. Francis for his helpful and critical supervision and to Professor I. Chester Jones, in whose department the work was done, for the facilities he provided.

PSX-B-5 Effect of replacement of dry-rolled corn with un-processed rye on growth performance, efficiency of dietary net energy utilization, and carcass traits of finishing heifers

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 458-459
Author(s):  
Keith M Buckhaus ◽  
Warren C Rusche ◽  
Zachary K Smith
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Block Design ◽  
Average Daily Gain ◽  
Estradiol Benzoate ◽  
Energy Utilization ◽  
Net Energy ◽  
Final Body Weight ◽  
Trenbolone Acetate ◽  
Finishing Diets

Abstract Continental × British beef heifers were used in a randomized complete block design experiment to evaluate the effects of replacing dry-rolled corn with unprocessed rye on growth performance, efficiency of dietary net energy (NE) utilization, and carcass trait responses in finishing heifers. Heifers (n = 56; 433 ± 34.0 kg) were transported 241 km from a regional sale barn to the Ruminant Nutrition Center in Brookings, SD. Heifers were blocked by weight grouping and then allotted to pens (n = 7 heifers/pen and 4 pens/treatment). Treatments included a finishing diet that contained 60% grain (DM basis) as dry-rolled corn (DRC) or unprocessed rye grain (RYE). On d 14, heifers were consuming the final diet and were implanted with 200 mg of trenbolone acetate and 28 mg of estradiol benzoate (Synovex-Plus, Zoetis, Parsippany, NJ). RYE heifers had decreased (P ≤ 0.01) final body weight, average daily gain, and gain efficiency; but tended (P = 0.08) to have a greater dry matter intake compared to DRC. RYE had decreased (P ≤ 0.01) observed dietary NE and decreased (P ≤ 0.01) observed-to-expected dietary NE ratio for maintenance and gain compared to DRC. Dressing percentage, 12th rib fat thickness, ribeye area, and the distribution of USDA yield and quality grades were not altered (P ≥ 0.12) by diet. Hot carcass weight, yield grade, estimated empty body fat (EBF), and body weight at 28% EBF decreased (P ≤ 0.02) and retail yield increased (P= 0.01) in RYE compared to DRC. These data indicate that unprocessed rye is a palatable feed ingredient for inclusion in finishing diets for beef cattle and that rye inclusion only minimally influences carcass quality. The feeding value of unprocessed rye is considerably less (21.4%) than that of dry-rolled corn using current standards and approximately 91% of the NE value of processed rye.

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