The effects of implanting prepuberal dairy heifers with anabolic steroids on live-weight gain, blood and urine composition and milk yield

1979 ◽  
Vol 93 (2) ◽  
pp. 321-327 ◽  
Author(s):  
W. Little ◽  
R. M. Kay ◽  
D. J. Harwood ◽  
R. J. Heitzman
Keyword(s):  
Body Weight ◽  
Anabolic Steroids ◽  
Live Weight ◽  
Feed Conversion ◽  
Trenbolone Acetate ◽  
Dairy Heifers ◽  
Significant Difference ◽  
Weight Gains ◽  
Urine Composition ◽  
The Mean

SUMMARYTwenty-seven British Friesian heifer calves were housed as a group but fed individually barley-lucerne pellets according to a scale related to body weight. At 16 weeks and again at 31 weeks of age nine calves were implanted subcutaneously at the base of the ear with 300 mg trenbolone acetate (group T), nine calves were similarly implanted with 140 mg trenbolone acetate and 20 mg oestradiol-17/? (group TE) and the remaining nine calves were sham implanted (group C).As a result of increased feed conversion ratios, body-weight gains were significantly greater in group T (0–80 kg/day) and group TE (0–87 kg/day) than in group C (0–72 kg/ day) during the 15 weeks following the second implant, but there was no significant difference between groups following the first implant.Following both implants in groups T and TE the mean concentrations of urea and albumin in serum decreased, and that of globulin increased. The mean urea: creatinine ratio in the urine of animals in groups T and TE relative to that in group C also decreased.The heifers were served by an Aberdeen Angus bull at the first and, when they occurred, subsequent oestruses. Following calving the mean milk yields in the first lactation in group T (641 kg in 96 days) and group TE (1993 in 212 days) was considerably lower than in group C (3636 kg in 293 days). The udder size in both groups of animals treated with the anabolic steroids was markedly reduced. It is concluded that despite an improvement in feed conversion ratios and body-weight gains, trenbolone acetate should not be administered to prepuberal heifers which will be retained for breeding and milk production.

The effect of body weight at calving on milk production and reproductive performance of Friesian × Zebu heifers

1987 ◽  
Vol 45 (3) ◽  
pp. 325-333 ◽  
Author(s):  
F. Deresz ◽  
C. M. Jaume ◽  
M. R. de Carvalho ◽  
C. A. González
Keyword(s):  
Body Weight ◽  
Post Partum ◽  
Live Weight ◽  
Grass Silage ◽  
Holstein Friesian ◽  
Significant Difference ◽  
Total Milk ◽  
Bean Meal ◽  
The Mean ◽  
Soya Bean Meal

ABSTRACTTwenty-six pregnant Holstein-Friesian × zebu heifers, arranged in pairs according to age, body weight, expected calving date and amount of zebu breeding, were allocated at random to two nutritional regimens during the last 12 weeks before calving. If was planned that the animals in treatment A should calve at a pre-calving live weight of 480 kg and those in treatment B should calve at 380 kg. The diet consisted of maize silage or elephant grass silage, soya-bean meal and minerals. During the first 21 days of the post-partum period both groups were given 6 kg concentrate per head daily. After this period, the feeding level was adjusted every 14 days according to the current milk yield. The mean total milk yields were 2132 kg and 1283 kg (P < 0·05) and the lengths of lactation were 239 days and 156 days (P < 0·01) for cows in treatments A and B, respectively. There was no statistically significant difference between treatments in the intervals from calving to first heat or calving to conception.

scholarly journals Performance of two snail species – Archachatina marginata (S) and Achatina achatina (I) reared under the same management practices.

2021 ◽  
Vol 35 (2) ◽  
pp. 224-229
Author(s):  
O. Odunaiya ◽  
A. A. Akinyemi
Keyword(s):  
Management Practices ◽  
Slow Growth ◽  
Live Weight ◽  
Snail Species ◽  
Feed Conversion ◽  
Statistical Significant Difference ◽  
Randomized Design ◽  
Significant Difference ◽  
The Mean ◽  
Protein Supply

The performance and carcass analysis of two popular snail species - Archatina marginata (S) and Achatina achatina (L) commonly reared in West Africa were evaluated from day old to six (6) months of age under the same housing and dietary conditions in a complete randomized design with two (2) treatments, replicated thrice with sixty (60) snails per treatment. The study revealed that at day old treatment 1 (T1) had the higher live weight of 4.03g, while treatment 2 (T2) had 0.31g which showed a statistical significant difference at P<0.05. The shell length and shell width of the hatchlings also showed statistical significant difference (P<0.05) between the two treatments. The mean feed intake (g/day) for T1 was 2.89 and 1.96 for T2. Higher mortality (8.33%) was recorded in T2. T2 was also found to be the better converter of feed to edible meat with feed conversion ratio of 7.26 to 72.3 recorded in T1. The higher dressing out percentage (40.14) was recorded in T1. The result showed that snails generally have slow growth. T1 was found to grow faster than T2 hence it is recommended to the populace because it has higher potential to meet animal protein supply than T2. Research on improvement and nutrition of snails should therefore be encouraged.

The utilization of dried forage crops by growing ruminants

1977 ◽  
Vol 25 (2) ◽  
pp. 209-218
Author(s):  
M. J. Owers ◽  
H. Swan ◽  
B. Wilton
Keyword(s):  
Dry Matter ◽  
Live Weight ◽  
Forage Crops ◽  
Protein Levels ◽  
Significant Difference ◽  
Weight Gains ◽  
Bean Meal ◽  
The Mean ◽  
Ad Libitum ◽  
Soya Bean Meal

SUMMARYMixtures (1: 1) of whole-crop dried wheat or barley, with peas or beans as a nitrogen supplement, were fed ad libitum to four groups of 16 6-mo-old male castrate sheep for a period of 42 days in 1971. The mean dry-matter consumptions (kg/day) and live-weight gains (g/day) were: wheat+peas 1·69, 264; wheat+beans 2·05, 288; barley+peas 1·80, 282; and barley+beans 1·81, 229. This experiment was repeated in 1972. The differences between treatments were non-significant.Dried pelleted whole-crop maize was fed ad libitum to British Friesian steers for 90 days, in conjunction with molasses and one of three protein sources, soya bean meal, urea or whole crop beans. The dry-matter intakes (kg/day) and live-weight gains (kg) were: maize+soya 9·68, 1·26; maize+urea 9·38, 10·4; and maize+beans 9·72, 1·15.Dried maize in conjunction with urea, whole crop beans and dried grass to supply crude protein levels between 9 and 11% was fed to 48 Hereford × British Friesian steers. The dry-matter intakes (kg/day) and live-weight gains (kg/day) were: whole crop maize, 8·35, 0·87; whole crop maize+urea, 9·55, 1·0; whole crop maize+whole crop beans, 7·44, 0·70; whole crop maize+dried grass, 8·94, 1·15; whole crop maize+rolled barley, 9·30, 1·23; and dried grass + rolled barley, 9·24, 1·21. Although there was no significant difference in live-weight gain between the treatments, two levels of performance were apparent.

The effect of a combination of trenbolone acetate and oestradiol-17β on growth performance and blood, carcass and body characteristics of wether lambs

1981 ◽  
Vol 32 (3) ◽  
pp. 261-266 ◽  
Author(s):  
J. F. S. Coelho ◽  
H. Galbraith ◽  
J. H. Topps
Keyword(s):  
Body Weight ◽  
Protein Metabolism ◽  
Live Weight ◽  
Blood Metabolites ◽  
Serum Total Protein ◽  
Plasma Urea ◽  
Mean Values ◽  
Trenbolone Acetate ◽  
Kidney Fat ◽  
The Mean

ABSTRACTNine Cheviot × Shetland castrated male lambs from a group of 24 of 28 kg initial live weight, were subcutaneously implanted with a combination of 60 mg trenbolone acetate and 12 mg oestradiol-17β at 105 days and again at 45 days before slaughter. Of the remaining lambs, nine were untreated and six were slaughtered at the start of the experiment as part of a comparative slaughter procedure. The lambs treated with the anabolic preparation grew significantly faster (P < 0·05), converted food to live weight and estimated carcass gain more efficiently, had heavier carcasses which were larger, and had greater estimated gains for protein, moisture and ash. Implanted animals also tended to have a smaller deposition of carcass and kidney fat, but significantly heavier kidneys and less wool when the latter three weights were related to empty body weight. The mean values for plasma urea and serum total protein as indicators of protein metabolism were significantly decreased and increased respectively in treated lambs, but no other significant differences in blood metabolites and hormones were recorded. A significant increase in teat length of implanted lambs indicated the oestrogenic nature of the anabolic preparation.

Protein, fat and carbohydrates in the diets of pigs between 7 and 28 days of age

1979 ◽  
Vol 28 (3) ◽  
pp. 391-402 ◽  
Author(s):  
R. H. Wilson ◽  
Jane Leibholz
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Nitrogen Retention ◽  
Milk Proteins ◽  
Live Weight ◽  
Wheat Starch ◽  
Feed Conversion ◽  
Dietary Nitrogen ◽  
Significant Difference ◽  
Weight Gains

ABSTRACTIn two experiments, pigs were weaned at 4 to 5 days of age and offered dry diets based on milk proteins and tallow. Live-weight gains between 7 and 28 days of age were 220 g/day with feed conversion ratios of 0·80 when the optimum diets were given.Expt 1 was a 2 × 2 × 2 factorial with eight pigs per treatment. There were two sources of carbohydrate, lactose and wheat starch, two levels of fat, 40 and 250 g/kg and two levels of crude protein, 140 and 250 g/kg of the diet. There was no significant difference in the performance of pigs when they were fed lactose or wheat starch as the source of carbohydrate. However, the feed intake of the pigs and their weight gains and apparent digestibilities of dry matter and nitrogen were lower when the diets contained 250 g fat/kg than when the diets contained 40 g fat/kg.In Expt 2 six diets were fed to 12 pigs each. The diets contained 150, 180, 210, 240, 270 or 300 g/kg of crude protein. Weight gains and nitrogen retention showed a positive correlation (r= 0·997) with the dietary nitrogen intake but there was no statistical increase in these parameters above the 270 g crude protein/kg level. The apparent digestibilities of dry matter and nitrogen showed a similar trend. A value of 141 mg nitrogen/day per kg M0·75was estimated as the metabolic endogenous loss of nitrogen.

scholarly journals Pengaruh Pemberian Campuran Eceng Gondok Tetes dan Urea Terhadap Pertambahan Berat Badan Anak Sapi Aceh Jantan

2001 ◽  
Vol 2 (2) ◽  
pp. 13-17
Author(s):  
Mahyuddin Mahyuddin
Keyword(s):  
Latin Square ◽  
Live Weight ◽  
The Other ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Other Hand ◽  
Significant Difference ◽  
Weight Gains ◽  
Mixed Water

ABSTRACT. The experiment was conducted in Experimental Farm of Agriculture Fakulty, Syiah Kuala University. The purpose of the experiment was to study the effect of mixed Water hyiacinth molasses and urea fed on live-weight gains of Aceh Bullocks. Four Aceh Bullocks (live weight: 140-170 kg, age : 12 months) were used design was Latin Square which were divided into treatments and 4 periods. The treatments were : 0 percent (A), 15 percent (B), 30 percent (C) and 45 percent (D). Water hyiacinth. The resulth of this experiment showed that no significant differences on feed consumption and live weight gains. However, among the treatments, feed consumption of treatment 45 percent tends to decrease. On the other hand, live-weight gains Aceh Bullocks of treatment 45 percent tends to increase. There was a significant difference on feed conversion. Feed conversion of treatment 45 percent is the best.

scholarly journals RESPONSE OF BROILER BIRDS TO CHOLINE CHLORIDE IN SEMI ARID SOKOTO, NIGERIA.

2020 ◽  
Vol 1 (2) ◽  
Author(s):  
Abdullahi A. U. ◽  
Aliyu S. ◽  
Fauziyya I. ◽  
Bello A. ◽  
Jafaru Y.
Keyword(s):  
Body Weight ◽  
Body Weight Gain ◽  
Choline Chloride ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Feed Conversion ◽  
Significant Difference ◽  
Carcass Parameters

A study was carried out to evaluate growth performance and carcass characteristics of broiler birds fed with varying level of choline inclusion in their diets; T1 (control), T2 (10g/10kg) and T3 (20g/10kg). A total of 225 marshall broiler chicks were randomly divided into three (3) treatment group of 75 birds each. Each group was divided into five (5) replicates of fifteen (15) birds each laid in a completely randomized design. Feed and water was supplied ad-libitum and the experiment lasted for 49 days. The total feed intake (1316.75-14442.18) (24437.13-31999.76) for starter and finisher respectively, body weight gain (6227.30-8241.20) (10956.64-14182.96) for starter and finisher respectively, feed conversion ratio (1.73-2.26) (2.21-2.48) for starter and finisher respectively. Many (thigh, wings, back) of the carcass parameters measured were not significantly (p>0.05) affected by the treatments but significant difference (p<0.05) was observed in drum stick, breast and neck.  However, significant difference (p<0.05) was also observed in gizzard, liver and bile, heart, lungs, legs and head. There was significant difference (p<0.05) in primal cuts per live weight, primal cuts per dressed weight, organs per live weight and organs per dressed weight. In view of the results obtained, it can be concluded that treatment two (10g/10kg) performed better in terms of total body weight (TBW) and feed conversion ratio (FCR). Also in the carcass characteristics, treatment two performed better in terms of breast yield, drumstick, percentage of primal cuts from live weight (P/LW) and percentage of primal cuts from dressed weight.

The effect of trenbolone acetate on growth rate and carcass composition of young female rabbits

1983 ◽  
Vol 36 (1) ◽  
pp. 111-115 ◽  
Author(s):  
G. E. Lobley ◽  
A. Walker ◽  
Alexmary Connell ◽  
H. Galbraith
Keyword(s):  
Body Weight ◽  
Nitrogen Retention ◽  
Live Weight ◽  
Liver Weight ◽  
Young Female ◽  
Carcass Composition ◽  
Metabolizable Energy ◽  
Trenbolone Acetate ◽  
Energy Retention ◽  
The Mean

ABSTRACT1. Eighteen New Zealand White × Califomian young female rabbits (does) were paired by weight and age and, at 800 g live weight, placed on a restricted intake based on the mean body weight of each pair. On attaining 1 kg one of each pair was then given 10 mg trenbolone acetate by injection on days 1, 3 and 5 of each week. This continued until the animals reached 2·3 to 2·4 kg (5 to 6 weeks).2. There were no differences in digestible or metabolizable energy intakes between treated and untreated rabbits. However, the treated animals showed small but significant increases in rates of gain for live and empty body weight compared with control does. Treated animals also had significantly more nitrogen (P < 0·001) and less energy (P < 0·05) per unit empty body weight than controls. Although the proportion of total nitrogen retention was 0·19 greater (P < 0·001) in treated does, total energy retention was only slightly less. Treated animals had approximately 40 g (200 g/kg) less fat and 50 g more protein (N × 6·25) than control does at the end of the trial.3. Increases in liver weight and clitoral size were observed in treated animals.

A note on the comparative performance of beef steers implanted with the anabolic steroids trenbolone acetate and oestradiol-17β, alone or in combination

1981 ◽  
Vol 32 (2) ◽  
pp. 219-222 ◽  
Author(s):  
R. J. Heitzman ◽  
Diana N. Gibbons ◽  
W. Little ◽  
Lynne P. Harrison
Keyword(s):  
Anabolic Steroids ◽  
Live Weight ◽  
Experimental Period ◽  
Control Group ◽  
Beef Steers ◽  
Feed Conversion ◽  
Comparative Performance ◽  
Trenbolone Acetate ◽  
Group 5 ◽  
Group 2

ABSTRACTFive groups of six Hereford × Friesian steers, approximately 1 year old and weighing 363 kg at implantation, were individually fed according to body weight and slaughtered 100 days after implantation. Group 1 was sham-implanted subcutaneously in the ear. Group 2 was implanted with 20 mg of the steroid oestradiol-17β group 3 with 140mg of the steroid trenbolone acetate; group 4 with oestradiol-17β in one ear and trenbolone acetate in the other; and group 5 with oestradiol-17β and trenbolone acetate as a single implant in one ear.Groups 1 to 5 had mean overall live-weight gains (±s.e.) of 0·79, 0·88, 0·89, 0·98 and 1 15±0·067kg/day; mean feed conversion ratios of 9·30, 8·78, 8·45, 8·13 and 6·92 + 0·61; and mean cold carcass weights of 236, 246, 250, 252 and 257 ± 6.4kg, respectively. Oestradiol-17/? reduced omental (P <0·05) and kidney (P <001) fat. The two steroids appeared to produce independent and additive effects except when used together as a single combined implant (group 5), when the effect on live-weight gain was more prolonged. The mean concentrations of oestradiol-17/i in plasma in groups 2, 4 and 5 were greater than in the control group at 28, 28 and 91 days after implantation respectively (P < 0·001). Trenbolone acetate was present in the plasma in groups 3, 4 and 5 throughout the experimental period.

Changes in the body composition of beef cattle during compensatory growth

1991 ◽  
Vol 52 (1) ◽  
pp. 105-113 ◽  
Author(s):  
I A. Wright ◽  
A. J. F. Russel
Keyword(s):  
Body Composition ◽  
Body Weight ◽  
Weight Gain ◽  
G Protein ◽  
Compensatory Growth ◽  
Body Weight Gain ◽  
Live Weight ◽  
Significant Difference ◽  
Weight Gains ◽  
High Level

ABSTRACTForty-two weaned suckled Charolais-cross steers were used to measure changes in body composition during compensatory growth in growing cattle. Six cattle were slaughtered initially and the remaining 36 allocated to either a low level of feeding to 350 kg live weight followed by a high level (LH) or a high level of feeding throughout (HH). Above 350 kg live weight, food intake on both treatments was the same at any given live weight. Six cattle were slaughtered from each treatment at 350, 400 and 450 kg live weight. From initial live weight (259 kg) to 350 kg, live-weight gains were 0·45 and 0·78 kg/day for the LH and HH treatments respectively (P < 0·001). From 350 to 400 kg live weight, live-weight gains were 1·35 and 0·98 kg/day (P < 0·01) for the LH and HH cattle respectively, while from 400 to 450 kg live weight there was no significant difference (1·38 v. 1·20 kg/day). The LH cattle contained less fat in the empty body than the HH cattle at 350 kg (118 v. 153 g/kg; P < 0·05) and 400 kg live weight (117 v. 169 g/kg; P < 0·01), but at 450 kg there was no significant difference between treatments. From 350 to 400 kg live weight the composition of the empty body-weight gain was 663 g water, ' 108 g fat and 216 g protein per kg in the LH cattle and 422 kg water, 311 g fat and 173 g protein in the HH cattle. From 400 to 450 kg live weight the equivalent figures were 491, 291, 156 g/kg for the LH cattle and 744, 67 and 203 g/kg for the HH cattle. The results demonstrate that following a period of food restriction the empty body-weight gain of cattle initially comprises increased proportions of protein and water and a reduced proportion of fat compared with unrestricted cattle when both are given the same amount of food and compared at the same weight. There then follows a second phase in which the proportion of fat increases and the proportions of protein and water decrease.

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