EFFECT OF DIETARY CALCIUM AND PHOSPHORUS LEVELS ON PERFORMANCE, BONE BENDING MOMENT AND THE SEVERITY OF OSTEOCHONDROSIS AND LAMENESS IN BOARS AND GILTS SLAUGHTERED AT 100 OR 130 KG BODY WEIGHT

1986 ◽  
Vol 66 (3) ◽  
pp. 777-790 ◽  
Author(s):  
J. J. BRENNAN ◽  
F. X. AHERNE
Keyword(s):  
Research Council ◽  
Average Daily Gain ◽  
Bending Moment ◽  
Growth Period ◽  
Ash Content ◽  
Gain Ratio ◽  
Bone Ash ◽  
Calcium Phosphorus ◽  
Ad Libitum ◽  
Daily Gain

Ninety-six crossbred gilts and 96 crossbred boars averaging 20 kg were assigned to a factorial arrangement of three dietary calcium-phosphorus (Ca-P) levels and two slaughter weights (100 or 130 kg). The Ca-P regimens were based on (1) National Academy of Sciences-National Research Council (NAS-NRC)(1979), (2) Agricultural Research Council (ARC) (1981) and (3) 130% of ARC (1981) recommendations for grower and finisher swine. All pigs were fed ad libitum grower diets (0.60–0.50, 0.81–0.63, 1.05–0.82% Ca-P) from 20 to 55 kg and finisher diets (0.50–0.40, 0.72–0.54, 0.94–0.70% Ca-P) to 100 kg or 130 kg liveweight. At 100 kg liveweight 16 boars and 16 gilts from each of the Ca-P treatment groups were selected at random and slaughtered. The remaining pigs within each Ca-P group were allowed feed ad libitum or at 70% of ad libitum from 100 kg until slaughter at 130 kg. There was no significant effect of the three respective dietary Ca-P regimens on average daily gain, average daily feed intake, or feed/gain ratio of pigs during the 20- to 100-kg growth period. Metacarpal bending moment and femoral ash content increased (P < 0.05) in response to the first dietary Ca-P increment. There was a significant (P < 0.05) positive response of femoral ash content but not of bone bending moment to the second Ca-P increment. The incidence and severity of osteochondrosis of the femur, humerus, radius and ulna and leg soundness scores were unimproved (P > 0.05) by feeding elevated dietary Ca-P levels. There was no significant effect of ad libitum vs. restricted feeding during the 100- to 130-kg growth period on bone ash, bone bending moment or cartilage condition scores. Boars had significantly (P < 0.01) greater average daily gain and lower feed/gain ratio during the 20- to 100-kg growth period but they had more severe (P < 0.01) osteochondrotic lesions of the elbow joint and a lower (P < 0.001) femoral ash content than gilts. Correlation coefficients between cartilage soundness scores and bone ash content or bending moment were nonsignificant (P > 0.05). The results suggest that while bone ash content and bending moment respond positively to elevated Ca-P levels in excess of NAS-NRC (1979) recommendations, the incidence and severity of joint lesions and leg soundness scores are not reduced by maximizing bone mineralization. Key words: Osteochondrosis, calcium, phosphorus, swine

scholarly journals THE EFFECTS OF LEVELS OF ISOLATION, OR VARIETAL DIFFERENCES IN, HIGH FIBRE HULL FRACTION OF LOW GLUCOSINOLATE RAPESEED MEALS ON RAT OR PIG PERFORMANCE

1978 ◽  
Vol 58 (4) ◽  
pp. 743-752 ◽  
Author(s):  
J. J. KENNELLY ◽  
F. X. AHERNE ◽  
A. J. LEWIS
Keyword(s):  
Feed Intake ◽  
Average Daily Gain ◽  
Rapeseed Meal ◽  
Sprague Dawley ◽  
Crude Fibre ◽  
Gain Ratio ◽  
Sprague Dawley Rats ◽  
Significant Difference ◽  
Pig Performance ◽  
Daily Gain

Forty-eight crossbred pigs of average initial weight 21 kg were fed 10% Tower rapeseed meal (RSM) and 10% Candle RSM as partial replacements for soybean meal (SBM). Diets were formulated to be isocaloric. Pigs fed the SBM diet consumed less feed, gained significantly (P < 0.01) faster and were more efficient at converting feed to gain than those fed the RSM diets. Performance of pigs fed Candle RSM was not significantly different to that obtained with Tower RSM. In a second experiment, dehulled Tower RSM and Tower RSM hulls were mixed in amounts to produce RSM with crude fibre levels of 6.8, 10.8, 13.5 and 15.8%. The simulated RSM and Tower and Candle RSM were used to completely replace SBM in the diets of weanling (75 g) Sprague-Dawley rats. Rats fed SBM had significantly (P < 0.05) higher average daily gain (ADG) than those fed Tower or Candle RSM, or diets containing the rapeseed meats. There was no significant (P < 0.05) difference in ADG, feed intake or feed to gain ratio of rats fed either Tower or Candle RSM. Feed intake, feed to gain ratio and fecal volatile fatty acid concentrations increased while average daily gain decreased with increasing level of hulls in simulated RSM diets. There was no significant difference (P < 0.05) in thyroid weight between rats fed SBM, Tower RSM or Candle RSM.

177 Ad Libitum Consumption of a 1:1 Blend of inorganic:organic Se by Steers Grazing Endophyte-infected Tall Fescue Increases Serum Prolactin and Alkaline Phosphatase Activity, but Not Average Daily Gain

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 94-95
Author(s):  
Kelsie Webb ◽  
Ronald J Trotta ◽  
Phillip Bridges ◽  
James Matthews
Keyword(s):  
Alkaline Phosphatase ◽  
Phosphatase Activity ◽  
Alkaline Phosphatase Activity ◽  
Tall Fescue ◽  
Average Daily Gain ◽  
Serum Prolactin ◽  
Negative Effects ◽  
Ad Libitum ◽  
Ad Libitum Intake ◽  
Daily Gain

Abstract To test the hypothesis that average daily gain (ADG) and clinical parameters of steers grazing novel non-toxic (NTE) or toxic KY-31 (TE) endophyte-infected tall fescue would be improved by ad libitum intake of vitamin-mineral mixes (V-M) that contain 27 ppm Se as a 1:1 blend of SELPLEX:sodium selenite (MIX) vs sodium selenite (ISe), 32 TE-naïve beef steers depleted of Se were randomly assigned to ad libitum consumption ISe vs MIX for 35 d and fed enough of a NTE/alfalfa/grain diet to achieve 0.57 kg BW gain/d. Within Se-form treatments, 2 steers were randomly assigned to each of 4, 2-acre NTE (ISe = 316 ± 31 kg, MIX = 315 ± 22 kg) or TE (ISe = 316 ± 37 kg, MIX = 314 ± 39 kg) paddocks for 84 d and had ad libitum access to their respective V-M. The MIXED procedure of SAS was used to assess effects of day, Se-form (ISe, MIX) and endophyte (NTE, TE) treatments, and their interactions. Whole blood Se decreased (P &lt; 0.01) 31% from d 0 to 84 and was 6.2% greater (P &lt; 0.01) for MIX steers. Serum prolactin decreased (P &lt; 0.01) 18% for NTE and 48% for TE steers from d 0 to 84 and was 17% greater (P = 0.01) for MIX vs. ISe TE steers. Alkaline phosphatase activity (AP) decreased (P &lt; 0.02) 27% from d 0 to 84 and was 15% greater (P &lt; 0.02) for MIX steers. Serum urea nitrogen increased (P &lt; 0.02) 8.2% from d 0 to 84 for TE but not NTE steers. Average daily gain (kg/d) was less (P &lt; 0.01) in TE (-0.18) vs NTE (0.09) steers. We conclude that the ad libitum intake of MIX ameliorated the negative effects of consuming TE on serum prolactin and AP but not ADG.

scholarly journals Dietary supplementation of artificial sweetener and capsicum oleoresin as a strategy to mitigate the negative consequences of heat stress on pig performance

2020 ◽  
Vol 98 (5) ◽  
Author(s):  
Morgan E Biggs ◽  
Kellie A Kroscher ◽  
Lidan D Zhao ◽  
Zhenhe Zhang ◽  
Emma H Wall ◽  
...  
Keyword(s):  
Heat Stress ◽  
Relative Humidity ◽  
High Intensity ◽  
Average Daily Gain ◽  
Artificial Sweetener ◽  
Monocyte Count ◽  
Negative Consequences ◽  
Environmental Treatment ◽  
Ad Libitum ◽  
Daily Gain

Abstract Pigs exposed to elevated ambient temperatures exhibit reduced daily gain, alterations in muscle and fat deposition, and decreased health. Negative aspects of gastrointestinal (GI) function, integrity, and permeability also occur. High-intensity sweeteners can ameliorate the negative effects of heat stress (HS) by increasing GI glucagon-like peptide-2 production while capsicum oleoresin has been shown to reduce inflammatory response. The effects of an artificial high-intensity sweetener and capsicum oleoresin (CAPS-SUC; TakTik X-Hit, Pancosma, Switzerland) on growth performance of pigs were examined. Forty-eight pigs (12 wk of age, 43.2 ± 4.3 kg) were assigned to six treatments: thermoneutral conditions (21 ± 1.1 °C; 40% to 70% relative humidity) fed ad libitum with (TN+) or without supplement (TN−), heat stress (35 ± 1 °C; 20% to 40% relative humidity) fed ad libitum with (HS+) or without supplement (HS−), and thermoneutral conditions pair-fed to HS intake with (PFTN+) or without supplement (PFTN−). Supplementation (0.1 g/kg feed) began 2 d prior to the 3-d environmental treatment period. Body weights (BWs) and blood samples were collected on days −1 and 3. Rectal temperature (RT) and respiration rate (RR) were measured thrice daily and the feed intake (FI) was recorded daily. Intestinal sections were collected for histology. Pigs in HS conditions exhibited increased RT (~1.2 °C) and RR (~2.7-fold) compared with TN and PFTN groups (P &lt; 0.01). HS+ animals had increased RR when compared with HS− animals (P &lt; 0.02). Heat stress decreased FI compared with TN. HS and PFTN decreased (P &lt; 0.05) average daily gain compared with TN. Supplement did not alter the BW gain. HS and PFTN decreased (P &lt; 0.05) Gain:Feed compared with TN during environmental treatment. Supplementation with CAPS–SUC increased Gain:Feed by 0.12 (P &lt; 0.05). Circulating glucose concentrations tended to decrease in CAPS–SUC vs. non-supplemented HS and PFTN animals (P ≤ 0.1). Circulating insulin concentrations as well as monocyte count increased in HS compared with PFTN (P &lt; 0.04) but did not differ from TN and likely linked to altered FI. CAPS–SUC increased basophil count (P &lt; 0.02), irrespective of environment. Ileal villus height tended to decrease during HS and PFTN compared with TN (P &lt; 0.08), indicating an effect of intake. Overall, CAPS–SUC supplementation increased pig feed efficiency and may improve immune response.

GROWTH AND ACTH RESPONSES TO COLD STRESS OF YOUNG PIGS FED AD LIBITUM

1976 ◽  
Vol 56 (3) ◽  
pp. 365-371 ◽  
Author(s):  
D. E. BROWN ◽  
R. R. HACKER ◽  
G. J. KING
Keyword(s):  
Body Weight ◽  
Average Daily Gain ◽  
Seminal Vesicles ◽  
Feed Consumption ◽  
Plasma Acth ◽  
Body Protein ◽  
Young Pigs ◽  
Ad Libitum ◽  
Free Body ◽  
Daily Gain

Twenty-four 6-wk-old pigs were housed in individual metabolism cages and exposed for 6 wk to either 2 C or 20 C with ad libitum feed and water. The pigs at 20 C and 2 C had an average daily gain (ADG) of 544 g and 343 g (P < 0.01), respectively. Feed consumption was similar for both treatments, with feed:gain ratios being significantly lower in the 20 C group during the 1st and 3rd 2-wk periods. Spleen and kidney weights were a larger percent of ingesta-free body weight in pigs housed at 2 C. The percent body weight of livers, thyroids, testicles, seminal vesicles and bulbo-urethral glands were not statistically different between 20 C and 2 C housed pigs. Body protein and ash were 5 and 1.3% lower in the 2 C pigs. Differences in plasma ACTH between treatments within day were significant. Consistently lower levels of plasma ACTH were obtained from pigs housed at 2 C.

DIETARY CALCIUM-PHOSPHORUS LEVELS FOR GROWTH AND REPRODUCTION IN GILTS AND SOWS

1983 ◽  
Vol 63 (2) ◽  
pp. 443-454 ◽  
Author(s):  
R. R. GRANDHI ◽  
J. H. STRAIN
Keyword(s):  
Body Weight ◽  
Average Daily Gain ◽  
National Research Council ◽  
Maximum Growth ◽  
Feed Conversion ◽  
Treatment Groups ◽  
Calcium Phosphorus ◽  
Daily Gain ◽  
Phosphorus Levels ◽  
Growth And Reproduction

The effect of feeding barley-wheat-soya finisher, gestation and lactation diets containing (A) 1979 National Research Council (NRC) recommended calcium-phosphorus (Ca-P) levels or (B) 150% of NRC levels from 65 kg body weight (Bwt) on growth and reproduction was studied in two experiments using Lacombe (L) and Yorkshire (Y) gilts. The number of gilts used were 299 (148 L + 151 Y) and 107 (53 Y + 54 Y) in exp. 1 and 216 (106 L + 110 Y) and 101 (49 L + 52 Y) in exp. 2 during finishing and gestation-lactation periods, respectively. The reproductive performance during second parity was measured only in exp. 2 using 85 (36 L + 49 Y) primiparous sows. All pigs were housed in confinement except during breeding and gestation, when they were housed in outside dirt-lot pens. Average daily gain, feed intake, and feed conversion were similar for gilts fed finisher diets A or B in both experiments. In exp. 1, both L and Y gilts fed gestation diet B had more (P < 0.05) total (9.5 ± 0.3 vs. 8.6 ± 0.3) and live pigs (9.2 ± 0.3 vs. 8.2 ± 0.3) born and weaned (7.7 ± 0.3 vs 6.9 ± 0.2) with lower piglet weight gains at 3 wk (3.5 ± 0.1 vs. 3.9 ± 0.1 kg) and 5 wk (6.9 ± 0.2 vs. 7.5 ± 0.2 kg) when compared to gestation diet A group. These differences were not significant in exp. 2. Higher dietary Ca-P levels elevated the serum P during both gestation (7.3 ± 0.1 vs. 7.0 ± 0.1 mg/dL) and lactation (6.2 ± 0.1 vs. 5.9 ± 0.1 mg/dL) periods in exp. 1 but not in exp. 2. The changes in body weight during gestation and lactation, piglet birth weights, and weaning to estrus interval were similar for both treatment groups. These results indicated that the 1979 NRC recommended dietary Ca-P levels may be adequate to support the maximum growth and reproduction in gilts during finishing and lactation but are too low for gestation. Key words: Calcium, phosphorus, gilts, sows, growth, reproduction

Effects of a new sweetener, Stevia, on performance of newly weaned pigs

2000 ◽  
Vol 80 (3) ◽  
pp. 529-531 ◽  
Author(s):  
P. J. Munro ◽  
A. Lirette ◽  
D. M. Anderson ◽  
H. Y. Ju
Keyword(s):  
Key Words ◽  
Average Daily Gain ◽  
Stevia Rebaudiana ◽  
Feed Consumption ◽  
Feed Additive ◽  
Weaned Piglets ◽  
Weaned Pigs ◽  
Gain Ratio ◽  
Daily Gain

Two-hundred and nine purebred Yorkshire newly weaned piglets were used to determine the effect of the sweetener Stevia (Stevia rebaudiana) at 83.3, 167 or 334 mg kg−1 diet on feed consumption (FC), average daily gain (ADG) and feed to gain ratio (F/G) compared with treatments with 5% sucrose and no sweetener (control; C). The Stevia-containing diets did not appear to have detrimental effects on the FC and F/G ratios of the piglets when compared with C. The results indicated only a limited potential for Stevia as feed additive for piglets. Key words: Sweetener, palatability, Stevia, weaned pigs

Effect of nutritional regimen including limit feeding and breed on growth performance, carcass characteristics and meat quality in beef cattle

2012 ◽  
Vol 92 (3) ◽  
pp. 327-341 ◽  
Author(s):  
E. M. McGregor ◽  
C. P. Campbell ◽  
S. P. Miller ◽  
P. P. Purslow ◽  
I. B. Mandell
Keyword(s):  
Beef Cattle ◽  
Growth Performance ◽  
Meat Quality ◽  
Shear Force ◽  
Average Daily Gain ◽  
Carcass Characteristics ◽  
High Energy ◽  
Ad Libitum ◽  
Limit Feeding ◽  
Daily Gain

McGregor, E M., Campbell, C. P., Miller, S. P., Purslow, P. P. and Mandell, I. B. 2012. Effect of nutritional regimen including limit feeding and breed on growth performance, carcass characteristics and meat quality in beef cattle. Can. J. Anim. Sci. 92: 327–341. The effects of nutritional management regimen and breed on growth performance, carcass attributes, and meat quality were evaluated in 68 British (BRIT) and Continental (CONT) crossbred steers, managed on one of three nutritional regimens: (1) ad libitum access to a 77% corn diet (ALGRAIN), (2) limit feeding initially of the 77% corn diet, followed by ad libitum access to the 77% corn diet (LFGRAIN), and (3) limit feeding initially of a 90% haylage diet, followed by ad libitum access to the 77% corn diet (LFHAYL). Nutritional regimen by breed interactions (P<0.02) were present for average daily gain, dry matter intake (DMI), gain to feed, and shear force. LFHAYL regimen decreased gains to a greater extent for BRIT steers than CONT steers managed on ALGRAIN or LFGRAIN. Feed intakes were similar across nutritional regimens for CONT steers, while DMI was depressed in BRIT on LFHAYL as compared with steers started on ALGRAIN or LFGRAIN. Gain to feed was greater in BRIT cattle on LFGRAIN vs. ALGRAIN, while gain to feed was similar in CONT started on grain (ALGRAIN, LFGRAIN). Shear force was lower for beef from LFHAYL BRIT vs. beef from BRIT on ALGRAIN or LFGRAIN, while the converse was true for CONT. Limit feeding of a high-energy diet may be appropriate for cattle of British background to reduce feed input costs, while ensuring tenderness.

scholarly journals Effects of dietary copper supplementation on nutrient digestibility, serum biochemical indices, and growth rate of young female mink (Neovison vison)

2014 ◽  
Vol 59 (No. 11) ◽  
pp. 529-537 ◽  
Author(s):  
X.Z. Wu ◽  
Y. Yang ◽  
H.-T. Liu ◽  
Z.-Y. Yue ◽  
X.-H. Gao ◽  
...  
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Average Daily Gain ◽  
Young Female ◽  
Nutrient Digestibility ◽  
Glutamic Pyruvic Transaminase ◽  
Dietary Copper ◽  
Glutamic Oxalacetic Transaminase ◽  
Gain Ratio ◽  
Daily Gain

The objective of this study was to determine whether nutrient digestibility and growth performance of mink were affected by different dietary copper levels. Ninety-six 60-day-old healthy female minks were randomly assigned to 8 treatment groups with 12 animals in each group and fed a diet supplemented with either 0, 4, 8, 16, 32, 64, 128 or 256 mg/kg copper as CuSO<sub>4 </sub>&times; 5H<sub>2</sub>O, respectively. Our data showed that body weight and average daily gain increased (linear and quadratic, P &lt; 0.05) as Cu increased in the diet, the highest body weight and average daily gain were seen in the Cu32 group. Feed : gain ratio responded in a linear (P = 0.0025) fashion with increasing level of Cu, the lowest feed : gain ratio was seen in the Cu64 group. Digestibility of ether extract responded in a linear (P = 0.0190) fashion with increasing level of Cu. There were no differences in apparent digestibility of dry matter, CP, and gross energy among groups (P &gt; 0.05). N retention linearly (P = 0.0363) responded to increasing levels of Cu. Glutamic-oxalacetic transaminase and glutamic-pyruvic transaminase increased (linear and quadratic, P &lt; 0.05) as Cu increased in the diet; the highest glutamic-oxalacetic transaminase and glutamic-pyruvic transaminase were seen in the Cu256 group. Total protein of the minks was similar among the treatments, however, albumin in serum responded in a linear (P = 0.0370) and quadratic (P = 0.0049) fashion with increasing level of Cu. The activity of ceruloplasmin responded in a linear (P = 0.0001) and quadratic (P = 0.0203) fashion with increasing level of Cu. The activity of Cu-Zn superoxide dismutase responded in a linear (P = 0.0010) fashion with increasing level of Cu. Our results indicate that supplemental Cu plays an important role in the growth performance of mink, helping young female mink digest and efficiently utilize added dietary fat. &nbsp;

THE EFFECTS OF LEVEL OF FEED CONSUMPTION ON RATE AND EFFICIENCY OF GAIN BY STEERS FED AN ALL-BARLEY RATION

1962 ◽  
Vol 42 (1) ◽  
pp. 18-22 ◽  
Author(s):  
R. Hironaka ◽  
S. B. Slen
Keyword(s):  
Correlation Coefficient ◽  
Energy Requirement ◽  
Average Daily Gain ◽  
Feed Consumption ◽  
Creatinine Excretion ◽  
Urinary Creatinine ◽  
Gain Ratio ◽  
Maintenance Requirements ◽  
Daily Gain ◽  
Urinary Creatinine Excretion

Steers were individually offered an all-barley ration at levels calculated to meet the maintenance requirements of the animals and to obtain a gain of 1.0, 1.5, 2.0, and 2.5 pounds per day. The gains obtained were 0.97, 1.45, 1.95, and 2.03 pounds per day and the corresponding feed: gain ratios were 10.92, 8.51, 7.02, and 7.05. The feed: gain ratio was higher in Lot 1 than in Lots 2, 3, and 4 (P <.01) and, also, was higher in Lot 2 than in 3 and 4 (P <.05). The correlation coefficient of −0.92 between average daily gain and feed: gain ratio was significant (P <.01).The digestible energy of the barley was a calculated value based on the energy requirement for maintenance and gain and was found to be 1911 kilocalories per pound. No correlation was found between fat in the 9th, 10th, 11th rib section and urinary creatinine. Significant correlations were found between urinary creatinine excretion and both average daily gain and feed: gain ratio.

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